1 00:00:08,710 --> 00:00:06,470 welcome to nasa's jet propulsion 2 00:00:11,350 --> 00:00:08,720 laboratory in pasadena california i'm 3 00:00:13,509 --> 00:00:11,360 veronica mcgregor we are holding our 4 00:00:16,070 --> 00:00:13,519 final news conference for this week a 5 00:00:17,910 --> 00:00:16,080 week that has seen us have a tremendous 6 00:00:20,390 --> 00:00:17,920 success in landing on mars in the 7 00:00:21,269 --> 00:00:20,400 beginning of the exploration of a new 8 00:00:22,550 --> 00:00:21,279 world 9 00:00:24,630 --> 00:00:22,560 we're going to hear in a little while 10 00:00:26,550 --> 00:00:24,640 from ben city senior software engineer 11 00:00:28,230 --> 00:00:26,560 here at jpl who's going to give us a 12 00:00:30,230 --> 00:00:28,240 preview of what's coming up in the next 13 00:00:31,669 --> 00:00:30,240 few days for the rover but first we're 14 00:00:33,110 --> 00:00:31,679 going to hear from the entry descent and 15 00:00:34,870 --> 00:00:33,120 landing team 16 00:00:36,470 --> 00:00:34,880 they have been pouring over the data 17 00:00:38,869 --> 00:00:36,480 since sunday night and they have some 18 00:00:42,069 --> 00:00:38,879 new details to give us and to begin with 19 00:00:44,709 --> 00:00:42,079 i want to start by introducing the entry 20 00:00:47,430 --> 00:00:44,719 descent and landing phase lead adam 21 00:00:56,470 --> 00:00:47,440 steltzner and his deputy miguel san 22 00:00:59,990 --> 00:00:58,950 thank you veronica 23 00:01:02,150 --> 00:01:00,000 um 24 00:01:04,469 --> 00:01:02,160 we have a talented panel here for you 25 00:01:06,789 --> 00:01:04,479 today and and miguel really and i really 26 00:01:08,149 --> 00:01:06,799 wanted to be the ones to introduce 27 00:01:10,550 --> 00:01:08,159 them to you 28 00:01:13,190 --> 00:01:10,560 uh leading off the rotation from the jet 29 00:01:17,109 --> 00:01:13,200 propulsion laboratory the operations 30 00:01:19,429 --> 00:01:17,119 lead for entry descent landing alan chen 31 00:01:20,789 --> 00:01:19,439 to his left from the johnson space 32 00:01:22,950 --> 00:01:20,799 flight center 33 00:01:24,710 --> 00:01:22,960 in charge of guidance that guided entry 34 00:01:26,469 --> 00:01:24,720 that got us to the 35 00:01:28,950 --> 00:01:26,479 spot on mars 36 00:01:31,350 --> 00:01:28,960 gavin mendec 37 00:01:33,830 --> 00:01:31,360 to his left 38 00:01:36,789 --> 00:01:33,840 again from the jet propulsion laboratory 39 00:01:38,310 --> 00:01:36,799 in the segment owner for parachute 40 00:01:41,670 --> 00:01:38,320 descent 41 00:01:45,350 --> 00:01:41,680 devon kipp followed by 42 00:01:47,830 --> 00:01:45,360 also from the jet propulsion laboratory 43 00:01:49,109 --> 00:01:47,840 in charge of powered flight sort of an 44 00:01:51,510 --> 00:01:49,119 important thing 45 00:01:53,350 --> 00:01:51,520 steve cell 46 00:01:54,870 --> 00:01:53,360 beside him 47 00:01:57,270 --> 00:01:54,880 looking much better than 48 00:02:00,550 --> 00:01:57,280 steve 49 00:02:03,590 --> 00:02:00,560 from the langley research center 50 00:02:04,709 --> 00:02:03,600 trajectory specialist 51 00:02:05,830 --> 00:02:04,719 jody 52 00:02:09,510 --> 00:02:05,840 davis 53 00:02:12,070 --> 00:02:09,520 and last but not least the uh senior 54 00:02:13,190 --> 00:02:12,080 software engineer and flight software 55 00:02:15,270 --> 00:02:13,200 coggi 56 00:02:17,670 --> 00:02:15,280 and my personal idol 57 00:02:21,990 --> 00:02:17,680 ben zichi 58 00:02:25,830 --> 00:02:22,000 now this team here up on the uh on the 59 00:02:29,270 --> 00:02:25,840 stage represents the tip of the iceberg 60 00:02:31,830 --> 00:02:29,280 of a very very talented set of folks 61 00:02:35,350 --> 00:02:31,840 that worked together to make 62 00:02:37,030 --> 00:02:35,360 this day possible and to have a rover on 63 00:02:39,670 --> 00:02:37,040 the surface and some of the rest of the 64 00:02:41,750 --> 00:02:39,680 team are sitting here uh 65 00:02:44,229 --> 00:02:41,760 representing some of the rest of that 66 00:02:47,270 --> 00:02:44,239 iceberg in some 67 00:02:49,190 --> 00:02:47,280 small measure because it's a big iceberg 68 00:02:50,949 --> 00:02:49,200 and i would personally like to give take 69 00:03:02,869 --> 00:02:50,959 this moment to give them a little round 70 00:03:05,830 --> 00:03:04,470 and so now on 71 00:03:07,830 --> 00:03:05,840 to the briefing 72 00:03:09,990 --> 00:03:07,840 gentlemen 73 00:03:12,390 --> 00:03:10,000 um obviously we had a great day uh on 74 00:03:13,990 --> 00:03:12,400 mars on sunday um we just want to set up 75 00:03:15,270 --> 00:03:14,000 the the things you're going to hear from 76 00:03:18,070 --> 00:03:15,280 the rest of our team and what we know 77 00:03:20,149 --> 00:03:18,080 about edl i'll start with uh how we got 78 00:03:22,070 --> 00:03:20,159 there and what the conditions were like 79 00:03:23,670 --> 00:03:22,080 when we got to mars and and where 80 00:03:25,030 --> 00:03:23,680 exactly were and what the atmosphere was 81 00:03:26,550 --> 00:03:25,040 like 82 00:03:28,229 --> 00:03:26,560 we obviously had an incredibly clean 83 00:03:30,390 --> 00:03:28,239 ride from the cruise team we traveled 84 00:03:33,270 --> 00:03:30,400 over 350 million miles on the way to 85 00:03:35,110 --> 00:03:33,280 mars and we missed our entry target by 86 00:03:36,710 --> 00:03:35,120 only about one mile 87 00:03:39,509 --> 00:03:36,720 so a pretty impressive ride by the 88 00:03:41,589 --> 00:03:39,519 cruise team and our thanks to them 89 00:03:43,670 --> 00:03:41,599 over a week out we made a prediction of 90 00:03:46,149 --> 00:03:43,680 where where curiosity would be at the 91 00:03:48,949 --> 00:03:46,159 entry point and gave that to curiosity 92 00:03:50,949 --> 00:03:48,959 um that was we were about uh 1.25 93 00:03:52,630 --> 00:03:50,959 million miles from mars at the time we 94 00:03:55,190 --> 00:03:52,640 turned off to turned out to be off by 95 00:03:56,789 --> 00:03:55,200 only 800 800 feet 96 00:03:58,710 --> 00:03:56,799 so curiosity had a very good idea where 97 00:04:00,390 --> 00:03:58,720 she was at the top of the atmosphere and 98 00:04:01,670 --> 00:04:00,400 that's something that uh that gavin over 99 00:04:03,429 --> 00:04:01,680 here with our entry guidance took 100 00:04:04,229 --> 00:04:03,439 advantage of 101 00:04:06,470 --> 00:04:04,239 um 102 00:04:08,470 --> 00:04:06,480 if you bring up my first figure uh 103 00:04:09,830 --> 00:04:08,480 excuse me the atmosphere 104 00:04:11,990 --> 00:04:09,840 figure if you would 105 00:04:14,550 --> 00:04:12,000 um you'll see that the 106 00:04:16,469 --> 00:04:14,560 atmosphere was very much as we expected 107 00:04:18,789 --> 00:04:16,479 can we switch figures to the atmosphere 108 00:04:19,670 --> 00:04:18,799 figure 109 00:04:21,270 --> 00:04:19,680 thank you 110 00:04:23,270 --> 00:04:21,280 um i don't think we've had a weather 111 00:04:25,189 --> 00:04:23,280 report since the day before we landed 112 00:04:27,670 --> 00:04:25,199 but this is the weather as we knew it on 113 00:04:29,030 --> 00:04:27,680 the day we did land on august 5th 114 00:04:31,110 --> 00:04:29,040 it looks very similar to the days you 115 00:04:33,670 --> 00:04:31,120 saw before uh you know we have clear 116 00:04:36,230 --> 00:04:33,680 skies some water rise clouds nice clear 117 00:04:38,310 --> 00:04:36,240 and cold day just like we liked it just 118 00:04:40,150 --> 00:04:38,320 just like we thought we would see so 119 00:04:41,510 --> 00:04:40,160 there was very few dust events they are 120 00:04:43,270 --> 00:04:41,520 beginning to pick up in the season but 121 00:04:44,870 --> 00:04:43,280 still far away from the crater 122 00:04:47,030 --> 00:04:44,880 we got there before any dust could get 123 00:04:49,510 --> 00:04:47,040 there so that contributed to us having a 124 00:04:51,590 --> 00:04:49,520 very good day 125 00:04:53,510 --> 00:04:51,600 in general edl performance was as 126 00:04:55,350 --> 00:04:53,520 expected with very few exceptions people 127 00:04:58,230 --> 00:04:55,360 will walk through that in some detail 128 00:04:59,990 --> 00:04:58,240 here but we only know that because our 129 00:05:01,430 --> 00:05:00,000 edl communications was so good on the 130 00:05:03,510 --> 00:05:01,440 night of landing everything that you're 131 00:05:05,110 --> 00:05:03,520 going to hear today is based on uh is 132 00:05:06,550 --> 00:05:05,120 primarily based on data that we received 133 00:05:08,150 --> 00:05:06,560 that night 134 00:05:10,710 --> 00:05:08,160 from either from all our different 135 00:05:13,590 --> 00:05:10,720 sources 136 00:05:14,950 --> 00:05:13,600 so we had edl communications from 137 00:05:16,310 --> 00:05:14,960 all three orbiters that were listening 138 00:05:17,590 --> 00:05:16,320 from mars odyssey from mars 139 00:05:18,629 --> 00:05:17,600 reconnaissance orbiter and from mars 140 00:05:20,550 --> 00:05:18,639 express 141 00:05:22,950 --> 00:05:20,560 we also had information sent direct to 142 00:05:25,990 --> 00:05:22,960 earth via the tones that were heard both 143 00:05:27,590 --> 00:05:26,000 at uh canberra and at isa's new norsha 144 00:05:29,670 --> 00:05:27,600 station so both nasa and esa were 145 00:05:31,270 --> 00:05:29,680 listening uh we even listened to some of 146 00:05:33,430 --> 00:05:31,280 the information that was being sent to 147 00:05:35,510 --> 00:05:33,440 the relay orbiters from earth from radio 148 00:05:39,189 --> 00:05:35,520 observatory here on earth so we got all 149 00:05:40,150 --> 00:05:39,199 the data we expected to see 150 00:05:41,590 --> 00:05:40,160 you know there's one more source of 151 00:05:43,590 --> 00:05:41,600 course that will help us do a really 152 00:05:46,150 --> 00:05:43,600 detailed edl reconstruction and that's 153 00:05:48,629 --> 00:05:46,160 the recorded data that's on curiosity 154 00:05:50,710 --> 00:05:48,639 still right now waiting to be sent back 155 00:05:53,029 --> 00:05:50,720 that's should be in total about 100 156 00:05:54,469 --> 00:05:53,039 megabytes worth of data that'll help us 157 00:05:56,150 --> 00:05:54,479 learn everything 158 00:05:57,510 --> 00:05:56,160 that's on the order of 60 iphone 159 00:05:59,029 --> 00:05:57,520 pictures but 160 00:06:01,270 --> 00:05:59,039 that'll help us figure out what was 161 00:06:02,550 --> 00:06:01,280 going on in detail right now all we're 162 00:06:04,710 --> 00:06:02,560 really working from is what we got back 163 00:06:06,710 --> 00:06:04,720 that night which is about one megabyte 164 00:06:07,670 --> 00:06:06,720 or less than less than most iphone 165 00:06:09,110 --> 00:06:07,680 pictures 166 00:06:11,189 --> 00:06:09,120 but it still lets us know a lot about 167 00:06:12,950 --> 00:06:11,199 what was going on 168 00:06:15,909 --> 00:06:12,960 direct to earth we received 169 00:06:17,430 --> 00:06:15,919 we received 67 heartbeat tones and 26 170 00:06:18,710 --> 00:06:17,440 informational tones the fact that there 171 00:06:20,550 --> 00:06:18,720 were so many heartbeat tones tells us 172 00:06:22,070 --> 00:06:20,560 everything was going well the spacecraft 173 00:06:24,710 --> 00:06:22,080 didn't really have any errors to report 174 00:06:25,909 --> 00:06:24,720 and things were going very normally 175 00:06:28,070 --> 00:06:25,919 the last tone we received was heat 176 00:06:29,909 --> 00:06:28,080 shields operation this was completely as 177 00:06:31,590 --> 00:06:29,919 expected we lost signal almost exactly 178 00:06:32,790 --> 00:06:31,600 five minutes after entry 179 00:06:35,670 --> 00:06:32,800 which was within seconds of our 180 00:06:39,029 --> 00:06:35,680 prediction so things went pretty much as 181 00:06:40,950 --> 00:06:39,039 expected for uh for direct earth tones 182 00:06:42,790 --> 00:06:40,960 from mro we actually got more data than 183 00:06:44,629 --> 00:06:42,800 we expected we had coverage for about 19 184 00:06:46,309 --> 00:06:44,639 minutes we actually locked up about 185 00:06:47,670 --> 00:06:46,319 eight minutes before entry about five 186 00:06:49,110 --> 00:06:47,680 minutes early compared to our 187 00:06:50,629 --> 00:06:49,120 predictions 188 00:06:51,749 --> 00:06:50,639 and had coverage through landing plus 189 00:06:53,510 --> 00:06:51,759 six minutes 190 00:06:56,469 --> 00:06:53,520 um as we you know were concerned about 191 00:06:58,550 --> 00:06:56,479 we had a plasma blackout for about uh 43 192 00:07:00,070 --> 00:06:58,560 seconds but the flight software the way 193 00:07:01,749 --> 00:07:00,080 we designed the dl communications we 194 00:07:02,870 --> 00:07:01,759 were prepared for a blackout of 75 195 00:07:04,550 --> 00:07:02,880 seconds 196 00:07:06,710 --> 00:07:04,560 so that actually worked out as well too 197 00:07:08,150 --> 00:07:06,720 and we have data interleaved in there to 198 00:07:09,990 --> 00:07:08,160 tell us what was going on during the 199 00:07:11,749 --> 00:07:10,000 blackout we send some data after the 200 00:07:14,550 --> 00:07:11,759 blackout to tell us what might what was 201 00:07:15,909 --> 00:07:14,560 going on during the blackout 202 00:07:18,390 --> 00:07:15,919 odyssey had coverage for about 12 203 00:07:20,629 --> 00:07:18,400 minutes uh started about two minutes and 204 00:07:22,550 --> 00:07:20,639 19 seconds after entry that was about 20 205 00:07:24,230 --> 00:07:22,560 seconds later than we expected but still 206 00:07:26,870 --> 00:07:24,240 well within our predictions 207 00:07:29,350 --> 00:07:26,880 um you know the total data from uh from 208 00:07:32,070 --> 00:07:29,360 mars odyssey end and mro was about one 209 00:07:33,510 --> 00:07:32,080 megabyte of unique data 210 00:07:34,790 --> 00:07:33,520 so right now we're just uh working with 211 00:07:36,870 --> 00:07:34,800 the subset of the data that's been 212 00:07:38,230 --> 00:07:36,880 relayed soon we'll have in a couple 213 00:07:39,909 --> 00:07:38,240 weeks we'll have all the data coming 214 00:07:42,150 --> 00:07:39,919 back from the rover to tell us exactly 215 00:07:43,909 --> 00:07:42,160 what went on and uh we'll be able to 216 00:07:45,430 --> 00:07:43,919 reconstruct our folder trajectory and 217 00:07:46,870 --> 00:07:45,440 learn anything we can about this edl 218 00:07:48,790 --> 00:07:46,880 system that we might want to push 219 00:07:50,469 --> 00:07:48,800 forward 220 00:07:52,469 --> 00:07:50,479 we have some data that shows the actual 221 00:07:53,749 --> 00:07:52,479 event timing there was some confusion 222 00:07:55,270 --> 00:07:53,759 but i think we've got that all sorted 223 00:07:56,230 --> 00:07:55,280 out now on when the actual events 224 00:07:57,510 --> 00:07:56,240 occurred 225 00:08:00,150 --> 00:07:57,520 so if you look at the figure that we're 226 00:08:02,469 --> 00:08:00,160 showing here we have both uh the actual 227 00:08:05,029 --> 00:08:02,479 time that occurred on mars and the time 228 00:08:07,430 --> 00:08:05,039 uh that we heard about it here on earth 229 00:08:09,270 --> 00:08:07,440 uh for some major events here that folks 230 00:08:10,790 --> 00:08:09,280 will talk about 231 00:08:12,390 --> 00:08:10,800 so as we step through entry ascend 232 00:08:13,510 --> 00:08:12,400 landing that's kind of how this panel is 233 00:08:14,790 --> 00:08:13,520 laid out 234 00:08:16,390 --> 00:08:14,800 to the side here 235 00:08:18,550 --> 00:08:16,400 we'll first start with gavin talking 236 00:08:20,150 --> 00:08:18,560 about the entry guidance and how well we 237 00:08:22,309 --> 00:08:20,160 did there okay 238 00:08:24,150 --> 00:08:22,319 thank you alan so the the entry phase 239 00:08:27,270 --> 00:08:24,160 you know we enter the atmosphere about 240 00:08:29,589 --> 00:08:27,280 24 times the speed of sound mach 24 241 00:08:31,749 --> 00:08:29,599 and we plunged deep in the atmosphere 242 00:08:33,430 --> 00:08:31,759 and then using uh the techniques that 243 00:08:35,589 --> 00:08:33,440 curiosity had compared to previously 244 00:08:37,029 --> 00:08:35,599 recent landers flew parallel to the 245 00:08:38,949 --> 00:08:37,039 ground and i'm going to talk a little 246 00:08:41,029 --> 00:08:38,959 bit more in detail about that 247 00:08:42,550 --> 00:08:41,039 and we flew entry all the way down to 248 00:08:44,389 --> 00:08:42,560 just under mach 2. 249 00:08:45,829 --> 00:08:44,399 uh lasted about three and a half minutes 250 00:08:47,829 --> 00:08:45,839 very close to the expected time the 251 00:08:49,670 --> 00:08:47,839 duration we were we were thinking we'd 252 00:08:51,670 --> 00:08:49,680 see we pulled a little bit over 11 earth 253 00:08:53,750 --> 00:08:51,680 gs so if you were a human riding on 254 00:08:54,470 --> 00:08:53,760 board it'd be a little bit of a rough 255 00:08:55,829 --> 00:08:54,480 ride 256 00:08:57,190 --> 00:08:55,839 but fortunately curiosity is made of 257 00:09:00,150 --> 00:08:57,200 some pretty sturdy stuff and she handled 258 00:09:03,910 --> 00:09:02,630 so i want to provide some context for uh 259 00:09:05,430 --> 00:09:03,920 how this mission did compared to 260 00:09:07,509 --> 00:09:05,440 previous missions so if we could go to 261 00:09:09,990 --> 00:09:07,519 the the landing lips graphic what we're 262 00:09:11,509 --> 00:09:10,000 looking at here is a topography map of 263 00:09:13,190 --> 00:09:11,519 gale crater you can see mount sharp 264 00:09:14,949 --> 00:09:13,200 right there in the middle of the crater 265 00:09:17,269 --> 00:09:14,959 you can see our curiosity ellipse the 266 00:09:20,150 --> 00:09:17,279 smallest lips right there on the just 267 00:09:21,750 --> 00:09:20,160 north of the slopes of mount sharp 268 00:09:24,150 --> 00:09:21,760 but let's back up a little bit i mean in 269 00:09:25,509 --> 00:09:24,160 the 1970s we had the two viking landers 270 00:09:26,710 --> 00:09:25,519 they landed in different parts of mars 271 00:09:28,550 --> 00:09:26,720 not here 272 00:09:30,230 --> 00:09:28,560 but we got their landing ellipses and 273 00:09:32,150 --> 00:09:30,240 certainly of where they would land 274 00:09:33,829 --> 00:09:32,160 um sort of provided here for scale and 275 00:09:35,110 --> 00:09:33,839 you can see it's a very large area i 276 00:09:36,710 --> 00:09:35,120 mean part that was due to the atmosphere 277 00:09:38,389 --> 00:09:36,720 uncertainties was the first time we 278 00:09:40,470 --> 00:09:38,399 landed on mars we knew very little about 279 00:09:42,310 --> 00:09:40,480 what the atmosphere would really do 280 00:09:44,389 --> 00:09:42,320 and the landers did quite well they both 281 00:09:45,829 --> 00:09:44,399 landed successfully then it was uh 282 00:09:47,030 --> 00:09:45,839 unfortunately several decades before we 283 00:09:49,350 --> 00:09:47,040 returned to mars with the lander and 284 00:09:51,350 --> 00:09:49,360 then pathfinder the river that could 285 00:09:53,350 --> 00:09:51,360 landed 286 00:09:54,870 --> 00:09:53,360 with a smaller ellipse but it didn't use 287 00:09:57,590 --> 00:09:54,880 a lift and entry came in more like a 288 00:09:59,030 --> 00:09:57,600 cannonball spinning cannonball 289 00:10:00,790 --> 00:09:59,040 but over the years with spirit and 290 00:10:02,710 --> 00:10:00,800 opportunity in phoenix we're able to 291 00:10:04,710 --> 00:10:02,720 reduce those landing areas even better 292 00:10:07,030 --> 00:10:04,720 and a lot of that's due to the hard work 293 00:10:08,790 --> 00:10:07,040 of our interplanetary navigation team to 294 00:10:11,030 --> 00:10:08,800 further pinpoint the entry point in the 295 00:10:12,949 --> 00:10:11,040 atmosphere so what was then dominating a 296 00:10:14,230 --> 00:10:12,959 lot of the dispersion was what the 297 00:10:15,430 --> 00:10:14,240 atmosphere did and how the vehicle 298 00:10:17,030 --> 00:10:15,440 actually flew 299 00:10:19,030 --> 00:10:17,040 and so what curiosity did here is we 300 00:10:21,190 --> 00:10:19,040 basically built on top of all those 301 00:10:22,870 --> 00:10:21,200 improvements to make that even even 302 00:10:24,150 --> 00:10:22,880 better 303 00:10:26,790 --> 00:10:24,160 so the 304 00:10:28,069 --> 00:10:26,800 the way we fly our entry i think adam's 305 00:10:30,710 --> 00:10:28,079 mentioned over the last few days the 306 00:10:32,310 --> 00:10:30,720 tungsten ballast basically six segments 307 00:10:34,310 --> 00:10:32,320 right here and what they do is they 308 00:10:36,870 --> 00:10:34,320 basically trim the vehicle so when we're 309 00:10:39,910 --> 00:10:36,880 hypersonic speed we we have a little bit 310 00:10:42,230 --> 00:10:39,920 of lift basically we we glide slightly 311 00:10:43,670 --> 00:10:42,240 in the direction that we're leaning and 312 00:10:44,550 --> 00:10:43,680 very slowly but when you're going mach 313 00:10:46,230 --> 00:10:44,560 20 314 00:10:47,350 --> 00:10:46,240 that's more than enough speed for for 315 00:10:52,230 --> 00:10:47,360 what we need 316 00:10:54,870 --> 00:10:53,590 i guess before i get into that let me 317 00:10:56,150 --> 00:10:54,880 just explain 318 00:10:57,509 --> 00:10:56,160 we marked the star right there on our 319 00:10:58,870 --> 00:10:57,519 landing ellipse 320 00:11:00,389 --> 00:10:58,880 it's it's a little bit close to center 321 00:11:02,630 --> 00:11:00,399 it's about one and a half miles 322 00:11:04,069 --> 00:11:02,640 downrange and i want to explain what we 323 00:11:05,990 --> 00:11:04,079 know today why we weren't right in the 324 00:11:07,910 --> 00:11:06,000 middle like we wanted to be but hey 325 00:11:10,470 --> 00:11:07,920 we're still happy where we landed 326 00:11:11,910 --> 00:11:10,480 the one half miles comes to the way we 327 00:11:13,670 --> 00:11:11,920 flew so 328 00:11:15,110 --> 00:11:13,680 when we enter the atmosphere 329 00:11:16,150 --> 00:11:15,120 we've got this trim angle attack as i 330 00:11:18,150 --> 00:11:16,160 mentioned 331 00:11:19,509 --> 00:11:18,160 uh so imagine my hand is the heat shield 332 00:11:22,470 --> 00:11:19,519 right here and so we're flying in this 333 00:11:23,750 --> 00:11:22,480 direction so as we're you know leaning 334 00:11:25,590 --> 00:11:23,760 we'll basically turn the direction that 335 00:11:27,350 --> 00:11:25,600 we're leaning very slowly 336 00:11:28,550 --> 00:11:27,360 and what that 337 00:11:30,310 --> 00:11:28,560 what we're doing during that period is 338 00:11:31,990 --> 00:11:30,320 we're looking how far away to the target 339 00:11:33,990 --> 00:11:32,000 we're going to fly past it are we going 340 00:11:35,350 --> 00:11:34,000 to fly short of it 341 00:11:37,590 --> 00:11:35,360 we respond to that if we think we're 342 00:11:38,870 --> 00:11:37,600 going to fly past it oh i need to get a 343 00:11:40,710 --> 00:11:38,880 little bit deeper in the atmosphere so i 344 00:11:43,670 --> 00:11:40,720 don't fly past it so a little bit more 345 00:11:45,350 --> 00:11:43,680 lift down but while i'm doing that i'm 346 00:11:46,630 --> 00:11:45,360 also turning a little bit to the side 347 00:11:47,910 --> 00:11:46,640 but i still want to go back to the 348 00:11:50,230 --> 00:11:47,920 target and so we have what we call these 349 00:11:51,190 --> 00:11:50,240 bank reversals which basically rotate us 350 00:11:52,790 --> 00:11:51,200 over 351 00:11:54,150 --> 00:11:52,800 and during curiosity's entry we had 352 00:11:55,910 --> 00:11:54,160 three bank reversals the number that we 353 00:11:57,190 --> 00:11:55,920 expected but what's interesting about 354 00:12:00,069 --> 00:11:57,200 curiosity is that that third bank 355 00:12:01,670 --> 00:12:00,079 reversal uh was right at the end of 356 00:12:03,430 --> 00:12:01,680 range control where we're controlling 357 00:12:05,190 --> 00:12:03,440 our distance from so we had our third 358 00:12:07,430 --> 00:12:05,200 reversal 359 00:12:09,110 --> 00:12:07,440 and then we had it for a few seconds but 360 00:12:10,710 --> 00:12:09,120 during that period of time we climbed a 361 00:12:11,910 --> 00:12:10,720 little bit in the atmosphere 362 00:12:13,110 --> 00:12:11,920 we didn't have a lot of time after the 363 00:12:14,790 --> 00:12:13,120 reversal before we said you know we're 364 00:12:16,069 --> 00:12:14,800 done with range control now we're going 365 00:12:17,269 --> 00:12:16,079 to start aiming towards the target and 366 00:12:19,190 --> 00:12:17,279 so at the end of range control we 367 00:12:20,710 --> 00:12:19,200 already had close to a mile of air 368 00:12:22,629 --> 00:12:20,720 already which is you know well within 369 00:12:24,310 --> 00:12:22,639 the dispersions that's basically some of 370 00:12:26,310 --> 00:12:24,320 the setup that we're seeing to explain 371 00:12:28,389 --> 00:12:26,320 part of our missed distance why it was 372 00:12:29,430 --> 00:12:28,399 closer to two mile and a half there's 373 00:12:31,190 --> 00:12:29,440 some other things that could have 374 00:12:32,389 --> 00:12:31,200 contributed to that we're sensitive to 375 00:12:34,230 --> 00:12:32,399 tailwinds as we've seen our computer 376 00:12:36,230 --> 00:12:34,240 simulations and over the next several 377 00:12:37,990 --> 00:12:36,240 weeks and months we'll be looking at 378 00:12:39,430 --> 00:12:38,000 that to see how much the tailwinds did 379 00:12:46,550 --> 00:12:39,440 as well 380 00:12:51,509 --> 00:12:48,069 i would be remiss if i didn't mention 381 00:12:56,150 --> 00:12:53,430 as adam mentioned i'm from johnson space 382 00:12:59,030 --> 00:12:56,160 center uh we've done guided entry there 383 00:13:00,389 --> 00:12:59,040 since the 60s gemini apollo shuttle uh 384 00:13:02,629 --> 00:13:00,399 it's very important coming back from the 385 00:13:03,910 --> 00:13:02,639 moon that you you land the crew and the 386 00:13:05,509 --> 00:13:03,920 payload 387 00:13:06,389 --> 00:13:05,519 down and get to them as quickly as you 388 00:13:07,750 --> 00:13:06,399 can 389 00:13:09,750 --> 00:13:07,760 and so 390 00:13:11,750 --> 00:13:09,760 when msl started actually over 10 years 391 00:13:12,949 --> 00:13:11,760 ago we were uh 392 00:13:14,550 --> 00:13:12,959 we were trying to improve the line of 393 00:13:16,150 --> 00:13:14,560 ellipse and and guidance seemed like the 394 00:13:18,629 --> 00:13:16,160 right thing to do and i'm glad to say it 395 00:13:20,389 --> 00:13:18,639 worked really well 396 00:13:21,670 --> 00:13:20,399 the the the 397 00:13:22,870 --> 00:13:21,680 predictions errors we're seeing during 398 00:13:24,389 --> 00:13:22,880 guidance they looked very close to what 399 00:13:25,590 --> 00:13:24,399 we were expecting um i've been trying to 400 00:13:27,110 --> 00:13:25,600 find something interesting to talk about 401 00:13:28,230 --> 00:13:27,120 besides our slight miss distance and 402 00:13:29,590 --> 00:13:28,240 unfortunately we haven't found anything 403 00:13:31,829 --> 00:13:29,600 yet 404 00:13:33,030 --> 00:13:31,839 so um but that really goes i think a lot 405 00:13:34,710 --> 00:13:33,040 of credit to the aerodynamics team at 406 00:13:36,629 --> 00:13:34,720 langley the atmosphere teams here at 407 00:13:38,069 --> 00:13:36,639 some of these universities and jpl they 408 00:13:39,910 --> 00:13:38,079 think they did a great job 409 00:13:42,470 --> 00:13:39,920 uh helping us characterize how we're 410 00:13:43,590 --> 00:13:42,480 gonna fly and it looked like um we did 411 00:13:45,430 --> 00:13:43,600 well 412 00:13:47,350 --> 00:13:45,440 so uh at the end of the entry guidance 413 00:13:50,790 --> 00:13:47,360 phase uh we're you know approaching the 414 00:13:52,069 --> 00:13:50,800 target ellipse we then do a rotation 415 00:13:54,389 --> 00:13:52,079 because we want to get rid of this entry 416 00:13:56,150 --> 00:13:54,399 ballast right before pair should deploy 417 00:13:58,069 --> 00:13:56,160 and uh with that i'll hand it over to 418 00:13:59,189 --> 00:13:58,079 devin kipp to talk about that thanks 419 00:14:00,870 --> 00:13:59,199 kevin 420 00:14:03,829 --> 00:14:00,880 uh so what i'm going to share with 421 00:14:05,189 --> 00:14:03,839 everybody today is a a brief sampling of 422 00:14:07,350 --> 00:14:05,199 of what we already know about the 423 00:14:09,430 --> 00:14:07,360 parachute descent segment and how well 424 00:14:11,269 --> 00:14:09,440 this piece of hardware performed on the 425 00:14:13,670 --> 00:14:11,279 way down 426 00:14:15,030 --> 00:14:13,680 we only have some cursory ideas of how 427 00:14:17,269 --> 00:14:15,040 well it performed until we get a 428 00:14:19,110 --> 00:14:17,279 detailed trajectory reconstruction and 429 00:14:21,670 --> 00:14:19,120 atmospheric construction 430 00:14:23,750 --> 00:14:21,680 we can only infer things 431 00:14:26,389 --> 00:14:23,760 but this is an incredibly important 432 00:14:28,069 --> 00:14:26,399 piece of data to get because we don't 433 00:14:31,030 --> 00:14:28,079 have a lot of experience flying 434 00:14:33,910 --> 00:14:31,040 parachutes in the martian atmosphere 435 00:14:35,350 --> 00:14:33,920 we've done it six times before now seven 436 00:14:37,430 --> 00:14:35,360 and we've only done it at earth a few 437 00:14:39,590 --> 00:14:37,440 times as well so when you've only done 438 00:14:41,590 --> 00:14:39,600 something 10 times or so 439 00:14:44,870 --> 00:14:41,600 the 11th time is a lot of extra data and 440 00:14:47,590 --> 00:14:44,880 it's it's really exciting to to see that 441 00:14:49,910 --> 00:14:47,600 just as a flight test of a parachute 442 00:14:51,430 --> 00:14:49,920 so let's bring up the first image 443 00:14:54,310 --> 00:14:51,440 everybody's seen this 444 00:14:55,829 --> 00:14:54,320 uh as of about 3 a.m monday morning this 445 00:14:58,949 --> 00:14:55,839 was the most beautiful picture i had 446 00:15:00,470 --> 00:14:58,959 ever seen in my life and you can tell a 447 00:15:01,670 --> 00:15:00,480 whole lot about how the parachute 448 00:15:02,949 --> 00:15:01,680 performed just by looking at this 449 00:15:05,269 --> 00:15:02,959 parachute 450 00:15:06,870 --> 00:15:05,279 you can see that it's got its inflated 451 00:15:08,550 --> 00:15:06,880 shape perfectly 452 00:15:10,470 --> 00:15:08,560 you can see the dark area at the top of 453 00:15:12,150 --> 00:15:10,480 the parachute which is the vent that 454 00:15:13,350 --> 00:15:12,160 lets some air escape through the top of 455 00:15:14,870 --> 00:15:13,360 the parachute 456 00:15:17,030 --> 00:15:14,880 the shape here is exactly what we 457 00:15:19,189 --> 00:15:17,040 expected to see and you don't see any 458 00:15:21,750 --> 00:15:19,199 any apparent damage there's there's no 459 00:15:24,710 --> 00:15:21,760 holes visible there's no tearing visible 460 00:15:26,790 --> 00:15:24,720 and this picture was taken well into the 461 00:15:29,189 --> 00:15:26,800 parachute descent segment probably 40 to 462 00:15:30,389 --> 00:15:29,199 50 seconds after parachute deployment 463 00:15:32,470 --> 00:15:30,399 and 464 00:15:34,629 --> 00:15:32,480 we see a perfectly functioning parachute 465 00:15:36,790 --> 00:15:34,639 that looks exactly like we thought so 466 00:15:38,629 --> 00:15:36,800 that's great news 467 00:15:41,030 --> 00:15:38,639 more than that we can get some 468 00:15:43,590 --> 00:15:41,040 information by looking at the event 469 00:15:45,670 --> 00:15:43,600 times when did things happen compared to 470 00:15:49,030 --> 00:15:45,680 when we expected things to happen 471 00:15:51,590 --> 00:15:49,040 the parachute deployed about 259 seconds 472 00:15:55,670 --> 00:15:51,600 after entry compared to our predict of 473 00:15:57,030 --> 00:15:55,680 between 241 and 263 seconds so we're 474 00:15:58,550 --> 00:15:57,040 right in that sweet spot where we 475 00:16:00,629 --> 00:15:58,560 thought we would be 476 00:16:02,629 --> 00:16:00,639 perhaps a little bit later than the 477 00:16:04,230 --> 00:16:02,639 center which is consistent with having 478 00:16:06,629 --> 00:16:04,240 maybe a little less drag than we 479 00:16:08,949 --> 00:16:06,639 expected during the entry phase but from 480 00:16:10,710 --> 00:16:08,959 this we can conclude that the parachute 481 00:16:12,629 --> 00:16:10,720 opened in the conditions we thought it 482 00:16:15,030 --> 00:16:12,639 would open and that we had tested it to 483 00:16:17,189 --> 00:16:15,040 open it so the right mach number regime 484 00:16:19,110 --> 00:16:17,199 the right dynamic pressure regime and 485 00:16:22,069 --> 00:16:19,120 therefore the right loading on the 486 00:16:24,150 --> 00:16:22,079 parachute during the inflation event the 487 00:16:25,910 --> 00:16:24,160 second event time we can look at is when 488 00:16:28,150 --> 00:16:25,920 did the heat shield deploy 489 00:16:30,710 --> 00:16:28,160 the heat shield deploys based on a 490 00:16:32,310 --> 00:16:30,720 sensed velocity so after you you open 491 00:16:35,749 --> 00:16:32,320 this parachute you very quickly 492 00:16:39,030 --> 00:16:35,759 decelerate from mach 1.7 or so 493 00:16:41,509 --> 00:16:39,040 subsonically down to about mach 0.7 494 00:16:43,590 --> 00:16:41,519 and that took 20 seconds for the 495 00:16:46,150 --> 00:16:43,600 parachute to slow you down that much 496 00:16:48,629 --> 00:16:46,160 compared to our predict of between 16 497 00:16:50,870 --> 00:16:48,639 and 26 seconds so again right in the 498 00:16:52,949 --> 00:16:50,880 sweet spot of what we predicted and that 499 00:16:54,870 --> 00:16:52,959 tells us that the supersonic drag of 500 00:16:57,350 --> 00:16:54,880 this parachute was again 501 00:16:59,030 --> 00:16:57,360 very nominal what we expected to see it 502 00:17:01,030 --> 00:16:59,040 performed beautifully 503 00:17:03,030 --> 00:17:01,040 and then the third time point you can 504 00:17:06,069 --> 00:17:03,040 look at is is when backshell separation 505 00:17:08,789 --> 00:17:06,079 happened and that was about 95 seconds 506 00:17:10,789 --> 00:17:08,799 after heat shield separation again right 507 00:17:13,429 --> 00:17:10,799 in line with what we expected 508 00:17:16,549 --> 00:17:13,439 here we had a very large dispersion on 509 00:17:17,750 --> 00:17:16,559 what we expected anywhere from 60 to 150 510 00:17:19,990 --> 00:17:17,760 seconds that we could have been 511 00:17:22,390 --> 00:17:20,000 descending slowly on that parachute 512 00:17:24,390 --> 00:17:22,400 that's mostly due to not knowing what 513 00:17:27,110 --> 00:17:24,400 altitude precisely the parachute was 514 00:17:28,870 --> 00:17:27,120 going to deploy at and also not knowing 515 00:17:30,789 --> 00:17:28,880 so well the subsonic drag that the 516 00:17:31,990 --> 00:17:30,799 parachute was going to provide 517 00:17:34,310 --> 00:17:32,000 so the fact that we're right in the 518 00:17:36,549 --> 00:17:34,320 middle of that time window suggests not 519 00:17:38,310 --> 00:17:36,559 only the parachute behaved perfectly 520 00:17:40,310 --> 00:17:38,320 but also that the parachute deploy 521 00:17:42,230 --> 00:17:40,320 altitude was fairly nominal and almost 522 00:17:44,070 --> 00:17:42,240 precisely what we expected 523 00:17:45,430 --> 00:17:44,080 again all of these are implications we 524 00:17:47,669 --> 00:17:45,440 don't know these things for sure but 525 00:17:51,110 --> 00:17:47,679 based on the limited data we have 526 00:17:54,310 --> 00:17:52,470 the second 527 00:17:55,350 --> 00:17:54,320 thing i want to discuss with you is what 528 00:17:58,150 --> 00:17:55,360 we call 529 00:18:00,390 --> 00:17:58,160 wrist mode it's the behavior of the 530 00:18:02,630 --> 00:18:00,400 capsule underneath the parachute 531 00:18:03,909 --> 00:18:02,640 as the capsule is suspended down below 532 00:18:05,350 --> 00:18:03,919 the parachute 533 00:18:06,630 --> 00:18:05,360 it's not going to be perfectly still 534 00:18:08,549 --> 00:18:06,640 it's going to wobble some and that's 535 00:18:11,990 --> 00:18:08,559 what we call the wrist mode as the the 536 00:18:13,750 --> 00:18:12,000 capsule oscillates under the parachute 537 00:18:15,430 --> 00:18:13,760 there's some dynamics going on that we 538 00:18:16,710 --> 00:18:15,440 want to keep very slight you don't you 539 00:18:17,830 --> 00:18:16,720 don't want the capsule going all over 540 00:18:20,549 --> 00:18:17,840 the place 541 00:18:22,950 --> 00:18:20,559 for a variety of reasons one is the 542 00:18:25,350 --> 00:18:22,960 separation events are designed to have 543 00:18:27,270 --> 00:18:25,360 fairly benign motions when you separate 544 00:18:29,029 --> 00:18:27,280 that heat shield for it to separate 545 00:18:30,630 --> 00:18:29,039 cleanly and not re-contact you don't 546 00:18:33,830 --> 00:18:30,640 want the capsule dancing all over the 547 00:18:35,029 --> 00:18:33,840 place same thing at backshell separation 548 00:18:36,630 --> 00:18:35,039 the other thing though is we have these 549 00:18:38,150 --> 00:18:36,640 radar beams that are trying to measure 550 00:18:40,549 --> 00:18:38,160 their altitude and velocity of the 551 00:18:41,990 --> 00:18:40,559 spacecraft relative to the ground and if 552 00:18:44,070 --> 00:18:42,000 the capsule is dancing all over the 553 00:18:45,669 --> 00:18:44,080 place uh those radar beams might be 554 00:18:47,430 --> 00:18:45,679 looking far far away from the landing 555 00:18:49,190 --> 00:18:47,440 location and measuring the altitude of 556 00:18:50,549 --> 00:18:49,200 some terrain feature that 557 00:18:52,630 --> 00:18:50,559 that's far away that we don't really 558 00:18:54,230 --> 00:18:52,640 care about uh so if you can bring up the 559 00:18:56,390 --> 00:18:54,240 movie 560 00:18:58,549 --> 00:18:56,400 uh this is the the thumbnail version of 561 00:19:00,150 --> 00:18:58,559 the marty movie and you see the camera 562 00:19:02,070 --> 00:19:00,160 dancing around a little bit and this is 563 00:19:04,150 --> 00:19:02,080 this is good evidence of of some wrist 564 00:19:07,029 --> 00:19:04,160 mode happening as the camera field of 565 00:19:08,870 --> 00:19:07,039 view is changing uh what we know both 566 00:19:10,950 --> 00:19:08,880 from the the real-time data products 567 00:19:13,190 --> 00:19:10,960 from our inertial measurement unit and 568 00:19:15,669 --> 00:19:13,200 from this image is that the wrist mode 569 00:19:18,390 --> 00:19:15,679 we saw was very benign and consistent 570 00:19:19,909 --> 00:19:18,400 with what we would have expected 571 00:19:22,710 --> 00:19:19,919 wrist mode is something that that caused 572 00:19:25,110 --> 00:19:22,720 some concern for us on msl because 573 00:19:26,150 --> 00:19:25,120 during the mars exploration rover 574 00:19:28,470 --> 00:19:26,160 entries 575 00:19:30,549 --> 00:19:28,480 uh we got surprised a little bit and we 576 00:19:31,830 --> 00:19:30,559 saw some risk mode behavior 577 00:19:33,190 --> 00:19:31,840 for mer 578 00:19:35,510 --> 00:19:33,200 that was a little bit higher than we 579 00:19:37,669 --> 00:19:35,520 expected and we couldn't really explain 580 00:19:40,630 --> 00:19:37,679 at the time that the physics that went 581 00:19:42,310 --> 00:19:40,640 into that so one of the major focuses 582 00:19:44,789 --> 00:19:42,320 for the mars science laboratory was to 583 00:19:46,230 --> 00:19:44,799 figure out how to model this better how 584 00:19:48,710 --> 00:19:46,240 to better understand the physics of 585 00:19:50,950 --> 00:19:48,720 wrist mode and the fact that the 586 00:19:52,549 --> 00:19:50,960 observed wrist mode aligns very well 587 00:19:54,150 --> 00:19:52,559 with our predicts 588 00:19:56,710 --> 00:19:54,160 gives us some confidence that we may 589 00:19:58,150 --> 00:19:56,720 have have conquered that problem 590 00:20:01,270 --> 00:19:58,160 one interesting thing you'll see in this 591 00:20:03,669 --> 00:20:01,280 video is is the ground is is spinning 592 00:20:06,230 --> 00:20:03,679 and that's consistent with the capsule 593 00:20:08,870 --> 00:20:06,240 rotating underneath the parachute at 594 00:20:10,789 --> 00:20:08,880 between one and two degrees per second 595 00:20:11,669 --> 00:20:10,799 during the 90 seconds we're descending 596 00:20:13,830 --> 00:20:11,679 here 597 00:20:16,150 --> 00:20:13,840 we almost do a complete revolution 598 00:20:17,909 --> 00:20:16,160 underneath the parachute and again 599 00:20:19,830 --> 00:20:17,919 that's consistent with our predicts we 600 00:20:22,230 --> 00:20:19,840 thought maybe up to three degrees per 601 00:20:24,630 --> 00:20:22,240 second of rotation and we're down at one 602 00:20:25,990 --> 00:20:24,640 degree per second 603 00:20:27,909 --> 00:20:26,000 so 604 00:20:29,270 --> 00:20:27,919 not a lot of exciting things happen 605 00:20:31,430 --> 00:20:29,280 because everything was right down the 606 00:20:34,230 --> 00:20:31,440 pipe of what we expected 607 00:20:35,750 --> 00:20:34,240 but that's how we want it 608 00:20:37,430 --> 00:20:35,760 one other thing i want to point out if 609 00:20:39,029 --> 00:20:37,440 you can bring up the third image and 610 00:20:42,070 --> 00:20:39,039 this is just sort of 611 00:20:44,710 --> 00:20:42,080 nice because it's it's it's verification 612 00:20:47,430 --> 00:20:44,720 of an edl requirement we have countless 613 00:20:50,789 --> 00:20:47,440 edl requirements that we have to verify 614 00:20:53,190 --> 00:20:50,799 and this image fortuitously is almost 615 00:20:54,470 --> 00:20:53,200 exactly three seconds after heat shield 616 00:20:57,590 --> 00:20:54,480 separation 617 00:21:00,630 --> 00:20:57,600 and the heat sealed is about 15 meters 618 00:21:02,549 --> 00:21:00,640 away from the back shell and this is an 619 00:21:05,029 --> 00:21:02,559 important number because until the heat 620 00:21:07,590 --> 00:21:05,039 shield is 15 meters away we're a little 621 00:21:09,430 --> 00:21:07,600 bit nervous about the radar because it's 622 00:21:11,110 --> 00:21:09,440 possible that more than one radar beam 623 00:21:13,430 --> 00:21:11,120 can actually see the heat shield during 624 00:21:15,510 --> 00:21:13,440 those first 15 meters of motion 625 00:21:17,270 --> 00:21:15,520 and if they do they'll get a measurement 626 00:21:19,990 --> 00:21:17,280 of a very close altitude that will be 627 00:21:21,110 --> 00:21:20,000 rejected it won't cause any hazards but 628 00:21:22,789 --> 00:21:21,120 we want we want to get the heat shield 629 00:21:23,590 --> 00:21:22,799 more than 15 meters away as quick as we 630 00:21:25,830 --> 00:21:23,600 can 631 00:21:27,110 --> 00:21:25,840 and our requirement was 15 meters in 632 00:21:29,029 --> 00:21:27,120 five seconds 633 00:21:31,190 --> 00:21:29,039 and this picture tells us we got 15 634 00:21:33,430 --> 00:21:31,200 meters in three seconds 635 00:21:36,710 --> 00:21:33,440 so that's one verification that we can 636 00:21:38,950 --> 00:21:36,720 check we met that requirement 637 00:21:40,549 --> 00:21:38,960 so with that i'll let steve talk about 638 00:21:41,669 --> 00:21:40,559 power descent 639 00:21:43,590 --> 00:21:41,679 thanks devin 640 00:21:45,830 --> 00:21:43,600 so just really quickly i want to go 641 00:21:48,789 --> 00:21:45,840 through what power what happens during 642 00:21:51,190 --> 00:21:48,799 uh power descent and uh we start off by 643 00:21:53,430 --> 00:21:51,200 we're on the back shell the rover and 644 00:21:55,830 --> 00:21:53,440 the descent stage are inside the the 645 00:21:58,710 --> 00:21:55,840 back shell we get about 1.6 kilometers 646 00:22:00,390 --> 00:21:58,720 or one mile altitude we drop and free 647 00:22:02,549 --> 00:22:00,400 fall out of the back shelf for one 648 00:22:05,510 --> 00:22:02,559 second and then we light the engines 649 00:22:07,110 --> 00:22:05,520 and divert to the side so we don't run 650 00:22:09,510 --> 00:22:07,120 into the parachute that's still coming 651 00:22:11,830 --> 00:22:09,520 down behind us vertical flight all the 652 00:22:13,190 --> 00:22:11,840 way to the ground 653 00:22:14,870 --> 00:22:13,200 so i want to 654 00:22:17,110 --> 00:22:14,880 bring up basically the rest of the video 655 00:22:20,230 --> 00:22:17,120 that devin first started if we can go 656 00:22:22,230 --> 00:22:20,240 ahead and start that this is uh 3.88 657 00:22:24,549 --> 00:22:22,240 frames a second you can see we're 658 00:22:26,470 --> 00:22:24,559 starting out here with some wrist mode 659 00:22:27,990 --> 00:22:26,480 dynamics that devin talked about you 660 00:22:29,990 --> 00:22:28,000 back and forth and then you'll see it 661 00:22:32,230 --> 00:22:30,000 get really still 662 00:22:34,310 --> 00:22:32,240 right here 663 00:22:36,630 --> 00:22:34,320 the descent engines have started here 664 00:22:38,310 --> 00:22:36,640 and we are now under powered flight the 665 00:22:40,549 --> 00:22:38,320 first thing that happens is we divert to 666 00:22:43,909 --> 00:22:40,559 the side so you can see the ground 667 00:22:45,909 --> 00:22:43,919 moving that's the camera being swung 668 00:22:47,830 --> 00:22:45,919 about 20 degrees off vertical as we're 669 00:22:49,510 --> 00:22:47,840 moving to the side to avoid the back 670 00:22:51,029 --> 00:22:49,520 shell then the camera starts to 671 00:22:53,590 --> 00:22:51,039 straighten up again 672 00:22:55,590 --> 00:22:53,600 and it will basically snap to straight 673 00:22:57,190 --> 00:22:55,600 vertical 674 00:22:58,549 --> 00:22:57,200 we go through the rest of 675 00:23:01,270 --> 00:22:58,559 power descent you'll start to see the 676 00:23:03,270 --> 00:23:01,280 plumes impacting the ground 677 00:23:05,669 --> 00:23:03,280 and in a second you'll see the the wheel 678 00:23:08,230 --> 00:23:05,679 drop into place as we start sky crane 679 00:23:09,430 --> 00:23:08,240 and lower the mobility 680 00:23:11,510 --> 00:23:09,440 and then of course the camera goes 681 00:23:15,909 --> 00:23:11,520 pretty dark as we get 682 00:23:19,190 --> 00:23:16,870 and so 683 00:23:21,270 --> 00:23:19,200 as devin pointed out from the 684 00:23:23,590 --> 00:23:21,280 from all of the the data we've received 685 00:23:25,270 --> 00:23:23,600 so far we kind of 686 00:23:27,990 --> 00:23:25,280 we flew this right down the middle it's 687 00:23:29,510 --> 00:23:28,000 it's absolutely incredible to have 688 00:23:31,830 --> 00:23:29,520 worked on a plan 689 00:23:33,909 --> 00:23:31,840 for so many years and then just see 690 00:23:36,230 --> 00:23:33,919 everything happen exactly according to 691 00:23:38,630 --> 00:23:36,240 plan and as we were watching this in the 692 00:23:40,870 --> 00:23:38,640 in the in the war room on on landing 693 00:23:43,669 --> 00:23:40,880 night it was like all these contingency 694 00:23:46,310 --> 00:23:43,679 plans that we had made leading up to edl 695 00:23:48,070 --> 00:23:46,320 about what to do if we lose calm here or 696 00:23:49,350 --> 00:23:48,080 or lose calm there or if we don't know 697 00:23:51,270 --> 00:23:49,360 where the rover is when it lands down 698 00:23:53,190 --> 00:23:51,280 all of those were just shedding 699 00:23:55,590 --> 00:23:53,200 off it was like weights being lifted off 700 00:23:57,990 --> 00:23:55,600 our shoulders as as as we were able to 701 00:23:58,710 --> 00:23:58,000 watch all all of the data come in and 702 00:24:02,070 --> 00:23:58,720 and 703 00:24:06,470 --> 00:24:02,080 according to plan 704 00:24:08,149 --> 00:24:06,480 so uh uh as you can see uh 705 00:24:09,750 --> 00:24:08,159 when we hit the ground there the next 706 00:24:11,909 --> 00:24:09,760 thing that happens is the flyaway 707 00:24:13,830 --> 00:24:11,919 maneuver and we were actually 708 00:24:16,549 --> 00:24:13,840 uh extremely lucky but it was sort of a 709 00:24:19,110 --> 00:24:16,559 planned uh planned event uh if you go to 710 00:24:21,909 --> 00:24:19,120 the to the next image 711 00:24:22,789 --> 00:24:21,919 we were lucky enough to catch to take a 712 00:24:24,390 --> 00:24:22,799 rear 713 00:24:26,630 --> 00:24:24,400 oh can you go 714 00:24:28,070 --> 00:24:26,640 one more i'm sorry i might have 715 00:24:29,269 --> 00:24:28,080 yeah there 716 00:24:31,110 --> 00:24:29,279 uh if 717 00:24:33,269 --> 00:24:31,120 you look in the left image 718 00:24:35,510 --> 00:24:33,279 we believe we've caught what is the 719 00:24:38,070 --> 00:24:35,520 descent stage impact 720 00:24:40,549 --> 00:24:38,080 on the on the martian surface now this 721 00:24:42,230 --> 00:24:40,559 photo was taken about 40 seconds after 722 00:24:43,990 --> 00:24:42,240 touchdown 723 00:24:46,950 --> 00:24:44,000 the predicted time of flight of the 724 00:24:48,390 --> 00:24:46,960 descent stage is about 20 seconds so 725 00:24:50,070 --> 00:24:48,400 the descent stage would have already 726 00:24:51,669 --> 00:24:50,080 impacted by the time this picture was 727 00:24:52,950 --> 00:24:51,679 taken but 728 00:24:57,510 --> 00:24:52,960 the 729 00:24:59,350 --> 00:24:57,520 that 730 00:25:02,149 --> 00:24:59,360 the same image from the same camera 731 00:25:04,630 --> 00:25:02,159 taken 45 minutes later that that 732 00:25:06,630 --> 00:25:04,640 artifact is not there anymore and we do 733 00:25:08,789 --> 00:25:06,640 know that the artifact is real because 734 00:25:10,470 --> 00:25:08,799 it appears in multiple hazcam pictures 735 00:25:13,669 --> 00:25:10,480 from the rear of the rover 736 00:25:15,350 --> 00:25:13,679 so uh that's about 600 meters away from 737 00:25:17,590 --> 00:25:15,360 the rear of the rover and that is the 738 00:25:19,350 --> 00:25:17,600 direction that the descent stage 739 00:25:21,029 --> 00:25:19,360 should have flown away and so we're 740 00:25:22,710 --> 00:25:21,039 fairly certain that that is the impact 741 00:25:24,310 --> 00:25:22,720 plume so basically 742 00:25:26,070 --> 00:25:24,320 when the descent stage hits the ground 743 00:25:27,830 --> 00:25:26,080 it's going about 100 miles an hour and 744 00:25:28,710 --> 00:25:27,840 we expected it to kick up quite a lot of 745 00:25:31,510 --> 00:25:28,720 dust 746 00:25:34,310 --> 00:25:31,520 we actually selected the rear haz cam to 747 00:25:36,230 --> 00:25:34,320 be the first image uh taken actually the 748 00:25:38,390 --> 00:25:36,240 the timing of the haz cam pictures both 749 00:25:40,710 --> 00:25:38,400 front and rear were timed so that we 750 00:25:42,710 --> 00:25:40,720 would possibly catch any kind of uh 751 00:25:44,310 --> 00:25:42,720 cloud like this and and the fact that 752 00:25:46,789 --> 00:25:44,320 the descent stage flew 753 00:25:48,710 --> 00:25:46,799 directly after the rover was an amazing 754 00:25:51,830 --> 00:25:48,720 coincidence that we were able to to 755 00:25:56,710 --> 00:25:53,190 and 756 00:25:58,549 --> 00:25:56,720 so you also saw in the uh in the video 757 00:26:00,390 --> 00:25:58,559 that we were as we're touching down we 758 00:26:03,269 --> 00:26:00,400 started kicking up dust and if we can go 759 00:26:04,710 --> 00:26:03,279 to the the image before um i want to 760 00:26:06,149 --> 00:26:04,720 show you something that i personally 761 00:26:08,470 --> 00:26:06,159 find just 762 00:26:09,830 --> 00:26:08,480 so incredibly moving is that 763 00:26:12,230 --> 00:26:09,840 you're looking off the left side of the 764 00:26:14,630 --> 00:26:12,240 rover if i have the model here 765 00:26:17,190 --> 00:26:14,640 you can see basically the camera it's a 766 00:26:19,269 --> 00:26:17,200 shot from the the nav cams up on top of 767 00:26:21,590 --> 00:26:19,279 the mast here it's looking that way down 768 00:26:23,430 --> 00:26:21,600 to the off the left side of the rover 769 00:26:25,590 --> 00:26:23,440 and you can see two 770 00:26:28,230 --> 00:26:25,600 divots in the ground 771 00:26:29,990 --> 00:26:28,240 over there and you know we blasted those 772 00:26:33,029 --> 00:26:30,000 with our rocket engines so 773 00:26:34,630 --> 00:26:33,039 that makes me extremely happy 774 00:26:36,710 --> 00:26:34,640 now of course 775 00:26:39,029 --> 00:26:36,720 as you might expect landing on mars is a 776 00:26:41,590 --> 00:26:39,039 very very dirty event uh i mean we're 777 00:26:44,470 --> 00:26:41,600 basically off-roading for the next two 778 00:26:46,230 --> 00:26:44,480 years so we expected uh some debris and 779 00:26:48,710 --> 00:26:46,240 dirt and dust to get on things of course 780 00:26:50,630 --> 00:26:48,720 if you take your suv out and you 781 00:26:53,269 --> 00:26:50,640 actually use it off-road you expect it 782 00:26:55,190 --> 00:26:53,279 to get a little bit dirty and so uh we 783 00:26:56,549 --> 00:26:55,200 of course wanted to start off day one 784 00:26:58,470 --> 00:26:56,559 with a little bit of 785 00:26:59,990 --> 00:26:58,480 dirt on the side so you know you never 786 00:27:01,669 --> 00:27:00,000 like having those brand new sneakers 787 00:27:03,190 --> 00:27:01,679 that are nice and shiny 788 00:27:05,830 --> 00:27:03,200 so you can see on the top deck of the 789 00:27:07,510 --> 00:27:05,840 rover there uh there is a little bit of 790 00:27:10,070 --> 00:27:07,520 uh debris that we kicked up with the 791 00:27:11,430 --> 00:27:10,080 rocket engines uh as expected and so 792 00:27:14,230 --> 00:27:11,440 again this is 793 00:27:18,470 --> 00:27:14,240 more evidence of you know we we did that 794 00:27:24,310 --> 00:27:20,950 and so uh with that i'll turn it over to 795 00:27:27,110 --> 00:27:24,320 jody walk us through uh our predicted 796 00:27:28,390 --> 00:27:27,120 versus actual trajectory performance 797 00:27:31,110 --> 00:27:28,400 thanks steve 798 00:27:34,950 --> 00:27:31,120 uh so i'll be talking about two things 799 00:27:37,669 --> 00:27:34,960 um first we'll go through a google mars 800 00:27:39,990 --> 00:27:37,679 animation which is we use google mars 801 00:27:42,630 --> 00:27:40,000 and it actually has our latest predicted 802 00:27:45,350 --> 00:27:42,640 trajectory this is prior to landing 803 00:27:48,070 --> 00:27:45,360 and then we'll go through after landing 804 00:27:50,870 --> 00:27:48,080 and how we used our simulations and what 805 00:27:52,950 --> 00:27:50,880 we got from curiosity at touchdown to 806 00:27:55,269 --> 00:27:52,960 determine where we thought we landed and 807 00:27:56,470 --> 00:27:55,279 how that actually compared to where we 808 00:27:59,350 --> 00:27:56,480 really landed 809 00:28:01,029 --> 00:27:59,360 so if i could have the the video 810 00:28:02,389 --> 00:28:01,039 this is google mars and it's going to 811 00:28:04,710 --> 00:28:02,399 take us through and remember this is 812 00:28:05,990 --> 00:28:04,720 real simulation data here uh we're going 813 00:28:08,149 --> 00:28:06,000 through the bank reversals the first 814 00:28:10,950 --> 00:28:08,159 bank reversal second and third and this 815 00:28:12,630 --> 00:28:10,960 is only half of of the angle 816 00:28:16,470 --> 00:28:12,640 of the bank reversal 817 00:28:18,950 --> 00:28:16,480 this is going four times real time and 818 00:28:21,590 --> 00:28:18,960 we actually use google mars to analyze 819 00:28:23,590 --> 00:28:21,600 the trajectory to see it in 3d space 820 00:28:26,230 --> 00:28:23,600 instead of just you know numbers on 821 00:28:29,669 --> 00:28:26,240 white paper or matlab files 822 00:28:32,149 --> 00:28:29,679 and so this is taking us through uh 823 00:28:34,230 --> 00:28:32,159 the entry balance mass jettison and what 824 00:28:36,149 --> 00:28:34,240 we'll do is we'll pitch over 825 00:28:38,230 --> 00:28:36,159 and we'll look at the landing site 826 00:28:39,590 --> 00:28:38,240 and we'll actually see a couple pans of 827 00:28:43,430 --> 00:28:39,600 the landing site 828 00:28:45,990 --> 00:28:43,440 now this this trajectory is is what we 829 00:28:47,909 --> 00:28:46,000 assumed uh is the nominal trajectory 830 00:28:51,190 --> 00:28:47,919 that was based off of the latest and 831 00:28:53,190 --> 00:28:51,200 greatest nav uh navigation that we got 832 00:28:56,149 --> 00:28:53,200 right prior to landing 833 00:28:57,669 --> 00:28:56,159 so this just takes a glimpse over gale 834 00:29:00,230 --> 00:28:57,679 crater 835 00:29:02,310 --> 00:29:00,240 parachute deploy 836 00:29:05,269 --> 00:29:02,320 this is the configuration that we were 837 00:29:08,870 --> 00:29:05,279 at and parachute deploy happened about 838 00:29:10,149 --> 00:29:08,880 10 15 just five seconds after 10 15 mars 839 00:29:11,350 --> 00:29:10,159 time 840 00:29:13,350 --> 00:29:11,360 pacific 841 00:29:14,710 --> 00:29:13,360 so here we have heat shield separation 842 00:29:16,230 --> 00:29:14,720 heat shield separation happened 20 843 00:29:19,909 --> 00:29:16,240 seconds after 844 00:29:23,750 --> 00:29:19,919 lock up 845 00:29:25,750 --> 00:29:23,760 about a kilometer and a half higher than 846 00:29:27,669 --> 00:29:25,760 what we expected and that's not a bad 847 00:29:28,789 --> 00:29:27,679 thing that's that's a good thing 848 00:29:32,070 --> 00:29:28,799 and 849 00:29:33,909 --> 00:29:32,080 77 seconds after that we have back shell 850 00:29:36,310 --> 00:29:33,919 separation 851 00:29:37,750 --> 00:29:36,320 time happened as expected things are 852 00:29:39,990 --> 00:29:37,760 looking nominal 853 00:29:40,950 --> 00:29:40,000 and here we kind of pan down to to the 854 00:29:43,110 --> 00:29:40,960 rover 855 00:29:44,389 --> 00:29:43,120 touchdown happened 55 seconds after 856 00:29:46,389 --> 00:29:44,399 backshell set 857 00:29:48,149 --> 00:29:46,399 all as we expected 858 00:29:49,510 --> 00:29:48,159 i wanted to point out here that the flag 859 00:29:51,669 --> 00:29:49,520 the american flag that's sitting under 860 00:29:53,990 --> 00:29:51,679 the rover give a shout out to google 861 00:29:55,350 --> 00:29:54,000 mars they actually put our landing 862 00:29:57,269 --> 00:29:55,360 location 863 00:29:59,110 --> 00:29:57,279 in google mars already so that was that 864 00:30:00,149 --> 00:29:59,120 was kind of neat so this is the types of 865 00:30:02,789 --> 00:30:00,159 things that we were looking at right 866 00:30:04,389 --> 00:30:02,799 before right before entry 867 00:30:06,149 --> 00:30:04,399 to see how things were looking and how 868 00:30:09,269 --> 00:30:06,159 they were going to compare after entry 869 00:30:11,990 --> 00:30:09,279 after touchdown um so if we could move 870 00:30:14,310 --> 00:30:12,000 to the next figure 871 00:30:16,710 --> 00:30:14,320 so now this is this is after landing we 872 00:30:18,149 --> 00:30:16,720 want to know where is this rover or 873 00:30:20,070 --> 00:30:18,159 where is an estimate of where we think 874 00:30:22,710 --> 00:30:20,080 it is so so the folks that are actually 875 00:30:25,269 --> 00:30:22,720 going to find this using highrise from 876 00:30:27,110 --> 00:30:25,279 mro will have a good idea 877 00:30:29,110 --> 00:30:27,120 so right after landing we get 878 00:30:31,029 --> 00:30:29,120 information from curiosity 879 00:30:33,110 --> 00:30:31,039 some touchdown information 880 00:30:35,430 --> 00:30:33,120 and we take that information 881 00:30:37,750 --> 00:30:35,440 and we account for our known errors such 882 00:30:39,669 --> 00:30:37,760 as navigation errors and we come up with 883 00:30:41,990 --> 00:30:39,679 a best estimate and that's the green 884 00:30:44,310 --> 00:30:42,000 diamond in the middle 885 00:30:46,789 --> 00:30:44,320 in the uh blue ellipse there 886 00:30:48,870 --> 00:30:46,799 so this was actually shown right after 887 00:30:50,230 --> 00:30:48,880 landing this was our prediction latest 888 00:30:51,190 --> 00:30:50,240 and greatest that we had immediately 889 00:30:53,510 --> 00:30:51,200 after 890 00:30:55,510 --> 00:30:53,520 some of you may have already seen this 891 00:30:57,750 --> 00:30:55,520 and this kind of sets up the next figure 892 00:30:59,029 --> 00:30:57,760 that i have if you could go to the next 893 00:31:02,710 --> 00:30:59,039 graphic 894 00:31:05,110 --> 00:31:02,720 so here we have the landing target that 895 00:31:09,190 --> 00:31:05,120 same light blue ellipse 896 00:31:11,430 --> 00:31:09,200 and like gavin said the landing target 897 00:31:14,070 --> 00:31:11,440 we missed it by about a mile and a half 898 00:31:15,510 --> 00:31:14,080 it's actually off the graphic there to 899 00:31:18,710 --> 00:31:15,520 the left 900 00:31:21,110 --> 00:31:18,720 and the green diamond is where we 901 00:31:23,029 --> 00:31:21,120 thought we landed right afterwards and 902 00:31:25,510 --> 00:31:23,039 that's the estimate that we gave 903 00:31:26,710 --> 00:31:25,520 to the localization folks to try to find 904 00:31:28,630 --> 00:31:26,720 the rover 905 00:31:30,710 --> 00:31:28,640 now we thought it would be within a 906 00:31:33,990 --> 00:31:30,720 kilometer of that 907 00:31:37,190 --> 00:31:34,000 the red x is where we actually landed 908 00:31:41,029 --> 00:31:37,200 so our estimation and where we actually 909 00:31:43,590 --> 00:31:41,039 landed was only two 200 meters apart 910 00:31:46,470 --> 00:31:43,600 well within that one kilometer green 911 00:31:49,750 --> 00:31:46,480 green air uh circle 912 00:31:52,230 --> 00:31:49,760 so we were very happy about that 913 00:31:54,470 --> 00:31:52,240 now to kind of shift gears and if you 914 00:31:56,389 --> 00:31:54,480 look over to the right you'll see the 915 00:31:57,990 --> 00:31:56,399 tungsten ballast masses the entry 916 00:32:01,110 --> 00:31:58,000 balance masses 917 00:32:03,190 --> 00:32:01,120 and our predictions now this is actually 918 00:32:04,149 --> 00:32:03,200 before landing where we thought these 919 00:32:07,110 --> 00:32:04,159 six 920 00:32:10,710 --> 00:32:07,120 heavy balls of tungsten would land um 921 00:32:12,870 --> 00:32:10,720 are within that dark blue ellipse 922 00:32:15,669 --> 00:32:12,880 and actually if you look 923 00:32:18,310 --> 00:32:15,679 where we expected those to land there's 924 00:32:20,789 --> 00:32:18,320 blue circles six blue circles and they 925 00:32:24,470 --> 00:32:20,799 actually show the same trends that have 926 00:32:25,509 --> 00:32:24,480 been shown um uh from the ctx stem um 927 00:32:27,110 --> 00:32:25,519 from 928 00:32:28,630 --> 00:32:27,120 uh that was shown i believe a couple 929 00:32:31,350 --> 00:32:28,640 days ago with the actual landing 930 00:32:34,630 --> 00:32:31,360 location of those balance masses and 931 00:32:37,190 --> 00:32:34,640 that's the overlay figure that you see 932 00:32:39,029 --> 00:32:37,200 and so you can see that those locations 933 00:32:40,950 --> 00:32:39,039 are well within 934 00:32:42,470 --> 00:32:40,960 the aero ellipse that's drawn around 935 00:32:43,269 --> 00:32:42,480 those balance masses 936 00:32:45,269 --> 00:32:43,279 so 937 00:32:46,789 --> 00:32:45,279 those actually impacted where we 938 00:32:48,389 --> 00:32:46,799 expected 939 00:32:50,070 --> 00:32:48,399 so that's kind of just to give you a 940 00:32:51,509 --> 00:32:50,080 flavor of what's to come and this is 941 00:32:53,110 --> 00:32:51,519 based off like al and everyone has 942 00:32:54,470 --> 00:32:53,120 mentioned off of minimal data that we 943 00:32:57,750 --> 00:32:54,480 have so far 944 00:32:59,269 --> 00:32:57,760 so stay tuned this is a huge effort and 945 00:33:01,029 --> 00:32:59,279 it's going to be exciting when we get 946 00:33:02,549 --> 00:33:01,039 the rest of the data back to really be 947 00:33:04,950 --> 00:33:02,559 able to tell the story of of what 948 00:33:07,509 --> 00:33:04,960 happened during edl 949 00:33:09,190 --> 00:33:07,519 so with that i pass it off to ben 950 00:33:11,990 --> 00:33:09,200 thank you 951 00:33:13,990 --> 00:33:12,000 all right so as jody just talked about 952 00:33:16,070 --> 00:33:14,000 uh all the hardware that we jettisoned 953 00:33:17,669 --> 00:33:16,080 as we went through the edl maneuver and 954 00:33:19,190 --> 00:33:17,679 we uh successfully landed on mars last 955 00:33:20,470 --> 00:33:19,200 sunday i'm going to talk about what 956 00:33:23,110 --> 00:33:20,480 we're going to do next on the surface 957 00:33:25,590 --> 00:33:23,120 which is to jettison the edl software 958 00:33:26,870 --> 00:33:25,600 and to now move on to our surface 959 00:33:29,110 --> 00:33:26,880 version of software so if you can pull 960 00:33:29,909 --> 00:33:29,120 up the first chart 961 00:33:35,669 --> 00:33:29,919 so 962 00:33:37,750 --> 00:33:35,679 controls all the onboard functions in 963 00:33:39,750 --> 00:33:37,760 the rover the software is responsible 964 00:33:41,190 --> 00:33:39,760 for everything all the autonomous 965 00:33:43,029 --> 00:33:41,200 functions that happened during cruise 966 00:33:45,110 --> 00:33:43,039 and the software ran this edl sequence 967 00:33:46,950 --> 00:33:45,120 that this wonderful team designed uh 968 00:33:48,389 --> 00:33:46,960 last sunday and the software is also 969 00:33:50,149 --> 00:33:48,399 what we've been using to do the 970 00:33:52,710 --> 00:33:50,159 characterization phase up until now on 971 00:33:54,630 --> 00:33:52,720 up until software on the surface of mars 972 00:33:56,630 --> 00:33:54,640 if you think about it what's what's hard 973 00:33:57,509 --> 00:33:56,640 about this uh if you think about my my 974 00:34:02,950 --> 00:33:57,519 phone 975 00:34:05,509 --> 00:34:02,960 times as fast as the processor that's on 976 00:34:08,629 --> 00:34:05,519 curiosity and it has 16 times as much 977 00:34:09,990 --> 00:34:08,639 storage as curiosity has and my phone 978 00:34:11,829 --> 00:34:10,000 doesn't have to land anything on mars 979 00:34:15,109 --> 00:34:11,839 all my phone has to do is follow bob's 980 00:34:22,069 --> 00:34:18,069 so 981 00:34:23,990 --> 00:34:22,079 this is that my phone wouldn't wouldn't 982 00:34:25,750 --> 00:34:24,000 survive the journey to mars so we have 983 00:34:27,669 --> 00:34:25,760 to build computers that are robust 984 00:34:29,829 --> 00:34:27,679 enough to survive the harsh interstellar 985 00:34:30,790 --> 00:34:29,839 space the hardest interplanetary space 986 00:34:31,909 --> 00:34:30,800 and 987 00:34:33,349 --> 00:34:31,919 when we do that there are certain 988 00:34:34,869 --> 00:34:33,359 limitations that we have and so some of 989 00:34:36,149 --> 00:34:34,879 those limitations include the size of 990 00:34:37,589 --> 00:34:36,159 the flight software image that we have 991 00:34:39,829 --> 00:34:37,599 and that that forces us every now and 992 00:34:41,430 --> 00:34:39,839 then to update the flight software to 993 00:34:42,470 --> 00:34:41,440 add new capabilities so if you go to the 994 00:34:44,310 --> 00:34:42,480 next chart 995 00:34:45,909 --> 00:34:44,320 uh when we launched back in november we 996 00:34:48,069 --> 00:34:45,919 included four major applications in the 997 00:34:49,430 --> 00:34:48,079 software that was really where we had 998 00:34:51,829 --> 00:34:49,440 the launch cruise application which 999 00:34:53,829 --> 00:34:51,839 compute controlled uh the the the 1000 00:34:55,669 --> 00:34:53,839 function the rover during cruise we had 1001 00:34:57,430 --> 00:34:55,679 our edl application our first version of 1002 00:34:59,670 --> 00:34:57,440 our edl application a first version of 1003 00:35:01,510 --> 00:34:59,680 sort of the core surface flight software 1004 00:35:03,349 --> 00:35:01,520 and we also had a fourth application 1005 00:35:05,510 --> 00:35:03,359 which was designed in from the start 1006 00:35:07,670 --> 00:35:05,520 which was the capability for us to 1007 00:35:09,910 --> 00:35:07,680 update the software while we were in 1008 00:35:11,589 --> 00:35:09,920 route to mars so unlike the hardware 1009 00:35:12,630 --> 00:35:11,599 which once we launch it it's gone it's 1010 00:35:14,470 --> 00:35:12,640 on its way to mars and there's nothing 1011 00:35:15,990 --> 00:35:14,480 we can do to get it back the software we 1012 00:35:17,829 --> 00:35:16,000 can radiate those bits to mars and have 1013 00:35:19,430 --> 00:35:17,839 them catch up with the rover on its way 1014 00:35:21,750 --> 00:35:19,440 there and actually update the software 1015 00:35:24,710 --> 00:35:21,760 in cruise so if you go to the next line 1016 00:35:27,030 --> 00:35:24,720 this software update capability uh we've 1017 00:35:29,510 --> 00:35:27,040 now exercised it already once in in 1018 00:35:32,069 --> 00:35:29,520 cruise we used it when back at the first 1019 00:35:33,750 --> 00:35:32,079 week of june to update the edl software 1020 00:35:35,589 --> 00:35:33,760 so to go from those four applications we 1021 00:35:37,349 --> 00:35:35,599 had in the launch cruise software and 1022 00:35:38,870 --> 00:35:37,359 actually update to what was our final 1023 00:35:40,390 --> 00:35:38,880 version of the edl software so if you 1024 00:35:42,950 --> 00:35:40,400 skip to the next turn 1025 00:35:44,790 --> 00:35:42,960 i and this really was edl v2o is what i 1026 00:35:45,910 --> 00:35:44,800 call 2.0 of the edl software and we 1027 00:35:47,750 --> 00:35:45,920 added a number of robustness 1028 00:35:49,349 --> 00:35:47,760 improvements in the edl software and we 1029 00:35:51,829 --> 00:35:49,359 really exercised this software update 1030 00:35:54,550 --> 00:35:51,839 capability now we also rev the surface 1031 00:35:56,069 --> 00:35:54,560 software somewhat we added v 1.1 of the 1032 00:35:57,510 --> 00:35:56,079 surface software but what we couldn't do 1033 00:35:59,589 --> 00:35:57,520 is we couldn't put all of the surface 1034 00:36:01,349 --> 00:35:59,599 software in to the flight software image 1035 00:36:02,630 --> 00:36:01,359 that we uploaded in cruz back in the 1036 00:36:04,150 --> 00:36:02,640 first week of june 1037 00:36:06,470 --> 00:36:04,160 because there just wasn't enough space 1038 00:36:08,069 --> 00:36:06,480 for it there just wasn't enough we have 1039 00:36:09,589 --> 00:36:08,079 a limitation on the size of that flight 1040 00:36:10,790 --> 00:36:09,599 software image and well the surface 1041 00:36:12,390 --> 00:36:10,800 mission is pretty complicated and 1042 00:36:14,069 --> 00:36:12,400 requires a lot of smarts and those 1043 00:36:15,430 --> 00:36:14,079 smarts exceeded the size of the the 1044 00:36:17,430 --> 00:36:15,440 image that we could have 1045 00:36:18,550 --> 00:36:17,440 so what we did was that if you go to the 1046 00:36:21,670 --> 00:36:18,560 next chart 1047 00:36:23,510 --> 00:36:21,680 uh we uploaded in cruz the r10 version 1048 00:36:24,630 --> 00:36:23,520 of flight software but we just left it 1049 00:36:26,310 --> 00:36:24,640 on the rover and we didn't actually 1050 00:36:27,670 --> 00:36:26,320 install it and what the r10 version of 1051 00:36:30,310 --> 00:36:27,680 the flight software gives us is it gives 1052 00:36:31,670 --> 00:36:30,320 us this not just the basic surface 1053 00:36:33,829 --> 00:36:31,680 capabilities 1054 00:36:36,310 --> 00:36:33,839 but also adds in the ability for us to 1055 00:36:38,310 --> 00:36:36,320 use the sampling system on the rover and 1056 00:36:40,230 --> 00:36:38,320 for us to drive with the rover and so 1057 00:36:42,710 --> 00:36:40,240 those are our real two new apps that are 1058 00:36:44,230 --> 00:36:42,720 coming in r10 and the cool features that 1059 00:36:46,550 --> 00:36:44,240 we have in the r10 flight software and 1060 00:36:48,550 --> 00:36:46,560 why we want to spend these next few saws 1061 00:36:51,270 --> 00:36:48,560 on mars updating to the r10 flight 1062 00:36:53,109 --> 00:36:51,280 software so if you go to the next turn 1063 00:36:54,710 --> 00:36:53,119 so first one the sampling system right 1064 00:36:56,310 --> 00:36:54,720 now we have the capability in just our 1065 00:36:57,349 --> 00:36:56,320 basic surface software to check out all 1066 00:36:59,270 --> 00:36:57,359 the health of the instruments but we 1067 00:37:00,870 --> 00:36:59,280 don't really have the capability to go 1068 00:37:02,470 --> 00:37:00,880 and make the full use of all this great 1069 00:37:03,910 --> 00:37:02,480 hardware that we shipped with us to mars 1070 00:37:06,870 --> 00:37:03,920 and so our 10 software gives us the 1071 00:37:08,870 --> 00:37:06,880 capability to use the robotic arm fully 1072 00:37:11,589 --> 00:37:08,880 to use the drill to use the dust removal 1073 00:37:13,670 --> 00:37:11,599 tool to use the whole sampling chain and 1074 00:37:15,510 --> 00:37:13,680 to ingest those samples into sam and 1075 00:37:16,550 --> 00:37:15,520 analyze them with chemin and so all this 1076 00:37:19,349 --> 00:37:16,560 exciting stuff that you're going to see 1077 00:37:21,190 --> 00:37:19,359 this mission do over the next few 1078 00:37:22,630 --> 00:37:21,200 months and and years on mars you're 1079 00:37:24,390 --> 00:37:22,640 going to see that that comes from the 1080 00:37:25,670 --> 00:37:24,400 capabilities that are in this r10 1081 00:37:27,910 --> 00:37:25,680 software 1082 00:37:29,190 --> 00:37:27,920 and so there's one other application go 1083 00:37:31,430 --> 00:37:29,200 to the next chart 1084 00:37:34,230 --> 00:37:31,440 well curiosity is a martian mega rover 1085 00:37:36,870 --> 00:37:34,240 curiosity was was born to drive and so 1086 00:37:38,310 --> 00:37:36,880 the r10 software includes the capability 1087 00:37:40,150 --> 00:37:38,320 for curiosity to really get out and 1088 00:37:42,230 --> 00:37:40,160 stretch your wheels and the surface of 1089 00:37:44,310 --> 00:37:42,240 mars so this is the the r10 software 1090 00:37:45,910 --> 00:37:44,320 gives us the autonomous driving 1091 00:37:47,510 --> 00:37:45,920 capabilities the ability for the rover 1092 00:37:49,670 --> 00:37:47,520 to drive both in 1093 00:37:51,109 --> 00:37:49,680 using onboard images to detect hazards 1094 00:37:52,870 --> 00:37:51,119 that are around the rover and to drive 1095 00:37:54,230 --> 00:37:52,880 safely across the surface of mars and 1096 00:37:57,109 --> 00:37:54,240 this is really what we'll use when we 1097 00:37:58,950 --> 00:37:57,119 set out on our first drive here on mars 1098 00:38:02,230 --> 00:37:58,960 and so if you go to the next slide 1099 00:38:03,109 --> 00:38:02,240 so we really say r10 unlike r9 r9 was 1100 00:38:04,950 --> 00:38:03,119 the version of software that was 1101 00:38:06,790 --> 00:38:04,960 optimized for edl and allowed our edl 1102 00:38:09,030 --> 00:38:06,800 friends to get us down sourcely to save 1103 00:38:11,190 --> 00:38:09,040 us some surfs of mars but r10 is 1104 00:38:12,950 --> 00:38:11,200 optimized for surface and so it has a 1105 00:38:14,230 --> 00:38:12,960 lot of great stuff that the science team 1106 00:38:16,150 --> 00:38:14,240 wants that the surface team wants in 1107 00:38:17,270 --> 00:38:16,160 order to enable this fantastic mission 1108 00:38:19,030 --> 00:38:17,280 and so that's why we're willing to spend 1109 00:38:21,030 --> 00:38:19,040 some time here doing doing the install 1110 00:38:22,230 --> 00:38:21,040 and if you go to the next chart 1111 00:38:23,829 --> 00:38:22,240 so 1112 00:38:25,430 --> 00:38:23,839 where we are right now is that we just 1113 00:38:27,510 --> 00:38:25,440 completed our software activities and 1114 00:38:28,390 --> 00:38:27,520 our software activities were to prepare 1115 00:38:30,550 --> 00:38:28,400 for 1116 00:38:32,310 --> 00:38:30,560 the installation of this of the flight 1117 00:38:33,750 --> 00:38:32,320 software and so everything is good we've 1118 00:38:36,069 --> 00:38:33,760 gotten a go for mission management to 1119 00:38:38,069 --> 00:38:36,079 proceed forward with this four day 1120 00:38:39,829 --> 00:38:38,079 installation process of installing the 1121 00:38:41,990 --> 00:38:39,839 flight software on board the rover now 1122 00:38:44,069 --> 00:38:42,000 we have two computers so it takes a 1123 00:38:46,230 --> 00:38:44,079 little bit longer for us to do the full 1124 00:38:48,230 --> 00:38:46,240 install because we want to do it very 1125 00:38:49,829 --> 00:38:48,240 safely do it step by step and take take 1126 00:38:51,910 --> 00:38:49,839 our time doing the the software update 1127 00:38:53,910 --> 00:38:51,920 so what you see is that on solve five 1128 00:38:55,670 --> 00:38:53,920 what we'll do is we'll do a toe dip into 1129 00:38:58,550 --> 00:38:55,680 the r10 flight software so just on our 1130 00:39:00,310 --> 00:38:58,560 prime computer we'll do a boot into the 1131 00:39:01,990 --> 00:39:00,320 r10 flight software but don't install it 1132 00:39:03,510 --> 00:39:02,000 fully just to check it out and we'll 1133 00:39:05,510 --> 00:39:03,520 come back out we'll look at all the data 1134 00:39:06,630 --> 00:39:05,520 that we got down from the rover to make 1135 00:39:08,950 --> 00:39:06,640 sure that the r10 software is 1136 00:39:10,630 --> 00:39:08,960 functioning nominally and then if 1137 00:39:12,470 --> 00:39:10,640 everything looks good on sol 6 we'll 1138 00:39:13,990 --> 00:39:12,480 commit to r10 and so we'll actually do 1139 00:39:15,910 --> 00:39:14,000 the full install on the prime computer 1140 00:39:17,109 --> 00:39:15,920 of the r10 flight software 1141 00:39:18,470 --> 00:39:17,119 and once we have that and everything's 1142 00:39:20,710 --> 00:39:18,480 working well on the prime computer with 1143 00:39:22,310 --> 00:39:20,720 the r10 flight software we'll move on to 1144 00:39:24,390 --> 00:39:22,320 doing the same thing except now on our 1145 00:39:26,950 --> 00:39:24,400 backup computer where on saw seven we'll 1146 00:39:29,270 --> 00:39:26,960 do another toe dip into the the r10 1147 00:39:31,750 --> 00:39:29,280 flight software on the backup computer 1148 00:39:33,430 --> 00:39:31,760 and on sol 8 we'll do a full commit of 1149 00:39:35,270 --> 00:39:33,440 r10 onto the backup computer at which 1150 00:39:37,109 --> 00:39:35,280 point we will have all the r10 flight 1151 00:39:39,270 --> 00:39:37,119 software installed and ready to go 1152 00:39:42,150 --> 00:39:39,280 with r10 1153 00:39:43,430 --> 00:39:42,160 so that's all i have 1154 00:39:45,109 --> 00:39:43,440 thank you we're going to begin with 1155 00:39:46,870 --> 00:39:45,119 questions here in the auditorium and 1156 00:39:48,870 --> 00:39:46,880 then we will go to the phone lines and 1157 00:39:50,470 --> 00:39:48,880 so let me get a microphone to you we'll 1158 00:39:52,870 --> 00:39:50,480 start here in the very front and give us 1159 00:39:54,870 --> 00:39:52,880 your name and affiliation thanks hi joe 1160 00:39:57,349 --> 00:39:54,880 palka from npr 1161 00:39:59,430 --> 00:39:57,359 two questions um 1162 00:40:01,430 --> 00:39:59,440 one is when you talked about uh 1163 00:40:02,870 --> 00:40:01,440 capturing the ground with the radar were 1164 00:40:05,190 --> 00:40:02,880 you capturing 1165 00:40:08,069 --> 00:40:05,200 a wide swath of mars or was there or was 1166 00:40:09,910 --> 00:40:08,079 the radar able to differentiate between 1167 00:40:11,589 --> 00:40:09,920 a bumpy place and a smooth place or 1168 00:40:12,790 --> 00:40:11,599 something like that and the second 1169 00:40:14,069 --> 00:40:12,800 question is 1170 00:40:16,069 --> 00:40:14,079 if you were gonna 1171 00:40:17,910 --> 00:40:16,079 run this mission again today 1172 00:40:20,550 --> 00:40:17,920 or let's say three months from now when 1173 00:40:22,870 --> 00:40:20,560 you've got all the data down would you 1174 00:40:25,589 --> 00:40:22,880 make that ellipse smaller or are you at 1175 00:40:27,510 --> 00:40:25,599 the limits of what this system 1176 00:40:29,030 --> 00:40:27,520 can actually do 1177 00:40:30,790 --> 00:40:29,040 all right i think i can take the first 1178 00:40:33,750 --> 00:40:30,800 part and maybe i can take the second 1179 00:40:37,430 --> 00:40:33,760 part uh so the the radar 1180 00:40:39,270 --> 00:40:37,440 is is fixed to the the descent stage 1181 00:40:41,829 --> 00:40:39,280 it's at the mercy of 1182 00:40:43,829 --> 00:40:41,839 where the wrist mode chooses to point it 1183 00:40:45,109 --> 00:40:43,839 in terms of what ground it's going to be 1184 00:40:47,670 --> 00:40:45,119 measuring 1185 00:40:50,390 --> 00:40:47,680 and it it doesn't do any discrimination 1186 00:40:52,870 --> 00:40:50,400 if we have a very wild wrist mode and 1187 00:40:54,470 --> 00:40:52,880 the radar ends up looking at mount sharp 1188 00:40:55,990 --> 00:40:54,480 and measuring the top of mount sharp 1189 00:40:57,510 --> 00:40:56,000 which it couldn't actually do but 1190 00:40:58,950 --> 00:40:57,520 hypothetically 1191 00:41:01,109 --> 00:40:58,960 it would be measuring the vehicle's 1192 00:41:03,829 --> 00:41:01,119 altitude relative to that point 1193 00:41:06,309 --> 00:41:03,839 and so one of the reasons we picked the 1194 00:41:08,790 --> 00:41:06,319 landing ellipse we did was that we knew 1195 00:41:11,109 --> 00:41:08,800 the altitude across the entire landing 1196 00:41:13,030 --> 00:41:11,119 ellipse didn't vary that much and no 1197 00:41:15,270 --> 00:41:13,040 matter what terrain feature the radar 1198 00:41:16,870 --> 00:41:15,280 was pointed at the altitude measured 1199 00:41:19,030 --> 00:41:16,880 relative to that terrain feature would 1200 00:41:20,870 --> 00:41:19,040 be close enough that we would still 1201 00:41:23,190 --> 00:41:20,880 separate from the back shell 1202 00:41:24,790 --> 00:41:23,200 at the right point 1203 00:41:27,030 --> 00:41:24,800 around the moment of back shell 1204 00:41:29,030 --> 00:41:27,040 separation the radar is certainly 1205 00:41:31,190 --> 00:41:29,040 looking within about a kilometer of the 1206 00:41:33,349 --> 00:41:31,200 ultimate landing site and so our 1207 00:41:35,109 --> 00:41:33,359 criteria is we want the altitude of the 1208 00:41:37,829 --> 00:41:35,119 ground to vary no more than about a 1209 00:41:41,190 --> 00:41:37,839 hundred meters within a kilometer range 1210 00:41:44,950 --> 00:41:43,430 and then for the the second question 1211 00:41:45,910 --> 00:41:44,960 can we get the lip size smaller next 1212 00:41:47,030 --> 00:41:45,920 time 1213 00:41:49,430 --> 00:41:47,040 there were some ideas that we came up 1214 00:41:50,870 --> 00:41:49,440 with over the design of this vehicle 1215 00:41:52,870 --> 00:41:50,880 private depends on where you're landing 1216 00:41:54,069 --> 00:41:52,880 if it's a higher elevation site then we 1217 00:41:55,750 --> 00:41:54,079 may need a little bit more lift to make 1218 00:41:56,870 --> 00:41:55,760 sure we can land our heavy rover a 1219 00:41:58,390 --> 00:41:56,880 little bit higher and that can that 1220 00:41:59,829 --> 00:41:58,400 folds in the ellipse size a little bit 1221 00:42:01,430 --> 00:41:59,839 but we do have a few ideas that can 1222 00:42:02,710 --> 00:42:01,440 probably shave a couple miles off of it 1223 00:42:04,870 --> 00:42:02,720 we did really well this time we have to 1224 00:42:05,750 --> 00:42:04,880 look at the data and see 1225 00:42:08,150 --> 00:42:05,760 you know 1226 00:42:10,470 --> 00:42:08,160 are our uh the way we imagine it work 1227 00:42:11,829 --> 00:42:10,480 are we correct but uh i'm confident we 1228 00:42:14,069 --> 00:42:11,839 can continue to do at least as good as 1229 00:42:16,710 --> 00:42:14,079 curiosity and better 1230 00:42:19,190 --> 00:42:16,720 in the future the big winners for uh 1231 00:42:21,349 --> 00:42:19,200 ellipse size error tend to be atmosphere 1232 00:42:23,510 --> 00:42:21,359 so i have a hand in that and uh 1233 00:42:25,030 --> 00:42:23,520 and the aerodynamics so what we learned 1234 00:42:26,390 --> 00:42:25,040 from the reconstruction that we do over 1235 00:42:27,910 --> 00:42:26,400 the next few months should help us take 1236 00:42:32,309 --> 00:42:27,920 a look at that and see if we can if we 1237 00:42:34,309 --> 00:42:33,270 okay we're going to take one more 1238 00:42:35,589 --> 00:42:34,319 question here in the room and then we'll 1239 00:42:36,630 --> 00:42:35,599 go to the phone line right over on this 1240 00:42:40,710 --> 00:42:36,640 side 1241 00:42:45,109 --> 00:42:42,470 thank you it's uh craig kavault with 1242 00:42:49,589 --> 00:42:45,119 aerospace america 1243 00:42:55,190 --> 00:42:53,190 was the altitude accordion capability 1244 00:42:56,630 --> 00:42:55,200 did it play a role here or was 1245 00:42:59,109 --> 00:42:56,640 everything so 1246 00:43:01,910 --> 00:42:59,119 tight that it just didn't 1247 00:43:03,750 --> 00:43:01,920 didn't matter so the altitude accordion 1248 00:43:06,950 --> 00:43:03,760 the accordion that we had allocated was 1249 00:43:08,630 --> 00:43:06,960 100 meters so we allowed for our 1250 00:43:11,349 --> 00:43:08,640 estimate of where the ground was to be 1251 00:43:13,750 --> 00:43:11,359 wrong by up to 100 meters from the data 1252 00:43:16,230 --> 00:43:13,760 we've gotten so far it was wrong by 1253 00:43:19,270 --> 00:43:16,240 three meters so 1254 00:43:21,750 --> 00:43:19,280 we overachieved in that area as well 1255 00:43:23,670 --> 00:43:21,760 so it everything again it was it was 1256 00:43:26,069 --> 00:43:23,680 right down the middle 1257 00:43:28,069 --> 00:43:26,079 okay the second question since edl has 1258 00:43:29,910 --> 00:43:28,079 been achieved i guess to the whole edl 1259 00:43:31,829 --> 00:43:29,920 team 1260 00:43:35,510 --> 00:43:31,839 a show of hands maybe on how many people 1261 00:43:35,520 --> 00:43:38,710 serious question 1262 00:43:38,720 --> 00:43:42,309 really 1263 00:43:42,319 --> 00:43:45,109 sure 1264 00:43:48,150 --> 00:43:46,550 i don't think we've we've started to 1265 00:43:50,470 --> 00:43:48,160 think about that yet yes we're still 1266 00:43:51,750 --> 00:43:50,480 relishing exactly success and actually a 1267 00:43:54,870 --> 00:43:51,760 lot of us are going to be involved in 1268 00:43:56,470 --> 00:43:54,880 the reconstruction as well but i think 1269 00:43:58,390 --> 00:43:56,480 you know we're thinking about future 1270 00:44:01,829 --> 00:43:58,400 projects and what to be what we're going 1271 00:44:03,829 --> 00:44:01,839 to be working on definitely 1272 00:44:05,589 --> 00:44:03,839 okay thank you 1273 00:44:07,910 --> 00:44:05,599 we're going to go to the phone line next 1274 00:44:09,270 --> 00:44:07,920 julia sizzler with canadian broadcasting 1275 00:44:11,990 --> 00:44:09,280 go ahead 1276 00:44:13,670 --> 00:44:12,000 hi uh this is julia sisler with uh cbc 1277 00:44:15,109 --> 00:44:13,680 in yellowknife 1278 00:44:17,589 --> 00:44:15,119 and yeah i just have a couple of 1279 00:44:19,990 --> 00:44:17,599 questions about the naming process 1280 00:44:25,910 --> 00:44:20,000 um so how did you decide to call the 1281 00:44:28,069 --> 00:44:26,710 yeah 1282 00:44:29,990 --> 00:44:28,079 that's i think that's a team you will 1283 00:44:31,510 --> 00:44:30,000 have to ask the question you'll have to 1284 00:44:33,030 --> 00:44:31,520 ask the surface team 1285 00:44:35,109 --> 00:44:33,040 i think john grotzinger is certainly 1286 00:44:37,670 --> 00:44:35,119 willing to talk about that at length 1287 00:44:39,349 --> 00:44:37,680 okay the basic idea was that 1288 00:44:40,630 --> 00:44:39,359 there are old rocks on mars and there 1289 00:44:42,630 --> 00:44:40,640 are some of the oldest rocks in the 1290 00:44:47,430 --> 00:44:42,640 world by yellowknife was there more to 1291 00:44:50,630 --> 00:44:49,430 i would like to know too 1292 00:44:52,069 --> 00:44:50,640 unfortunately you're just talking to the 1293 00:44:56,470 --> 00:44:52,079 delivery guys here 1294 00:45:01,750 --> 00:44:59,349 maybe you can tell me um just if it's 1295 00:45:02,790 --> 00:45:01,760 normal practice to name landing sites 1296 00:45:08,150 --> 00:45:02,800 after 1297 00:45:11,510 --> 00:45:09,829 i think the naming convention was done 1298 00:45:12,710 --> 00:45:11,520 by the science team and i'm looking 1299 00:45:14,150 --> 00:45:12,720 around here in the room to see if we 1300 00:45:16,550 --> 00:45:14,160 have a science team member and i don't 1301 00:45:17,430 --> 00:45:16,560 see one but maybe we oh wait i do see 1302 00:45:18,790 --> 00:45:17,440 one 1303 00:45:20,710 --> 00:45:18,800 but let me see if she's prepared to 1304 00:45:23,109 --> 00:45:20,720 answer the question 1305 00:45:24,790 --> 00:45:23,119 and uh joy crisp the deputy project 1306 00:45:27,349 --> 00:45:24,800 scientist is here in the room and let us 1307 00:45:28,870 --> 00:45:27,359 get her a microphone perfect thank you 1308 00:45:30,870 --> 00:45:28,880 great here we go 1309 00:45:32,950 --> 00:45:30,880 i don't fully know that 1310 00:45:34,870 --> 00:45:32,960 the you know what's behind the name but 1311 00:45:37,750 --> 00:45:34,880 i can make one correction which is it's 1312 00:45:39,670 --> 00:45:37,760 a quadrangle name so i think you heard 1313 00:45:41,910 --> 00:45:39,680 in previous press conferences that the 1314 00:45:43,910 --> 00:45:41,920 whole ellipse was divided up into these 1315 00:45:47,510 --> 00:45:43,920 quadrangles that are about a mile by a 1316 00:45:49,990 --> 00:45:47,520 mile in size and then each one of those 1317 00:45:53,270 --> 00:45:50,000 uh was mapped by a team member 1318 00:45:56,069 --> 00:45:53,280 and we got in ready right before landing 1319 00:45:57,430 --> 00:45:56,079 with geologically significant names that 1320 00:46:00,870 --> 00:45:57,440 related to 1321 00:46:02,950 --> 00:46:00,880 things like ancient geology terrains on 1322 00:46:06,470 --> 00:46:02,960 the earth that tie into our theme of 1323 00:46:08,710 --> 00:46:06,480 science so yellowknife is this one but i 1324 00:46:10,950 --> 00:46:08,720 i can't answer all the questions you 1325 00:46:12,309 --> 00:46:10,960 know that you've asked but i did want to 1326 00:46:15,109 --> 00:46:12,319 set that straight it's the name of the 1327 00:46:17,190 --> 00:46:15,119 quadrangle that we landed in 1328 00:46:18,710 --> 00:46:17,200 okay are all the other quadrangles named 1329 00:46:21,030 --> 00:46:18,720 also 1330 00:46:23,430 --> 00:46:21,040 they will be we're getting those lined 1331 00:46:26,950 --> 00:46:23,440 up okay but it is the quadrangle that 1332 00:46:29,109 --> 00:46:26,960 the curiosity landed in yes okay um do 1333 00:46:31,349 --> 00:46:29,119 you know if it's if it's 1334 00:46:33,589 --> 00:46:31,359 normal practice to name these things i 1335 00:46:35,750 --> 00:46:33,599 guess or is this unique to this project 1336 00:46:38,870 --> 00:46:35,760 well what is unique to this project was 1337 00:46:40,870 --> 00:46:38,880 that the dividing up of the ellipse into 1338 00:46:42,630 --> 00:46:40,880 quadrangles and mapping ahead of time 1339 00:46:45,750 --> 00:46:42,640 and that was really driven by the 1340 00:46:47,990 --> 00:46:45,760 wonderful orbital data sets that we had 1341 00:46:50,390 --> 00:46:48,000 we wanted to get ready by doing this 1342 00:46:52,710 --> 00:46:50,400 mapping so that we could more quickly do 1343 00:46:56,150 --> 00:46:52,720 strategic planning of where to send the 1344 00:46:57,990 --> 00:46:56,160 rover and and understand where we landed 1345 00:46:59,670 --> 00:46:58,000 could you just speak about the sort of 1346 00:47:02,069 --> 00:46:59,680 similarity between 1347 00:47:04,950 --> 00:47:02,079 the rock and surface on mars compared to 1348 00:47:06,309 --> 00:47:04,960 what's here near yellowknife 1349 00:47:07,270 --> 00:47:06,319 not yet 1350 00:47:09,270 --> 00:47:07,280 okay 1351 00:47:11,349 --> 00:47:09,280 but am i correct to say that the basis 1352 00:47:13,589 --> 00:47:11,359 between picking the name yellowknife was 1353 00:47:17,510 --> 00:47:13,599 the age of the rock right they're on the 1354 00:47:19,510 --> 00:47:17,520 order of 2.7 billion years old uh so we 1355 00:47:21,670 --> 00:47:19,520 went to mars to really get out the 1356 00:47:24,630 --> 00:47:21,680 ancient geology because that's where we 1357 00:47:28,470 --> 00:47:24,640 think there might be evidence for past 1358 00:47:30,230 --> 00:47:28,480 environments similar to on earth so it's 1359 00:47:31,829 --> 00:47:30,240 it's connected in that way simply 1360 00:47:34,550 --> 00:47:31,839 ancient rocks that might preserve 1361 00:47:37,349 --> 00:47:34,560 evidence of past environments favorable 1362 00:47:40,710 --> 00:47:39,190 one life question um 1363 00:47:42,870 --> 00:47:40,720 would anyone in yellowknife have been 1364 00:47:45,510 --> 00:47:42,880 consulted before this or or is this just 1365 00:47:48,150 --> 00:47:45,520 purely based on geological similarities 1366 00:47:50,150 --> 00:47:48,160 not that i know of but uh again i'm not 1367 00:47:52,309 --> 00:47:50,160 i wasn't totally plugged into the the 1368 00:47:53,829 --> 00:47:52,319 naming and how it was done right so 1369 00:47:55,030 --> 00:47:53,839 we'll we'll uh if you'd like to call our 1370 00:47:56,710 --> 00:47:55,040 newsroom we'll put you on the phone with 1371 00:47:58,230 --> 00:47:56,720 the person who came up with the name and 1372 00:48:00,309 --> 00:47:58,240 uh we can probably answer a lot more of 1373 00:48:01,670 --> 00:48:00,319 your questions that way and we're going 1374 00:48:02,950 --> 00:48:01,680 to take a couple more questions here in 1375 00:48:04,790 --> 00:48:02,960 the room and then we'll go back to the 1376 00:48:05,990 --> 00:48:04,800 phone lines i know you were next and 1377 00:48:07,030 --> 00:48:06,000 we'll get the microphone up here to the 1378 00:48:10,390 --> 00:48:07,040 front of the room and then we'll go to 1379 00:48:15,430 --> 00:48:12,470 uh hi there jonathan was bbc news couple 1380 00:48:17,430 --> 00:48:15,440 of quick ones did mars express see 1381 00:48:18,550 --> 00:48:17,440 uh all the way down to the ground i know 1382 00:48:20,630 --> 00:48:18,560 that 1383 00:48:22,950 --> 00:48:20,640 people in europe were were thinking they 1384 00:48:24,309 --> 00:48:22,960 may miss the uh the actual landing yeah 1385 00:48:26,390 --> 00:48:24,319 to my knowledge they did not get to the 1386 00:48:29,510 --> 00:48:26,400 ground uh this was per our predict uh we 1387 00:48:30,710 --> 00:48:29,520 expected them to to lose coverage of us 1388 00:48:31,910 --> 00:48:30,720 about a minute before landing and that 1389 00:48:33,589 --> 00:48:31,920 was about right 1390 00:48:36,390 --> 00:48:33,599 okay and the other the second one has 1391 00:48:39,030 --> 00:48:36,400 anybody sort of studied the debris field 1392 00:48:40,309 --> 00:48:39,040 uh from the descent stage impact to 1393 00:48:41,750 --> 00:48:40,319 consider what 1394 00:48:44,390 --> 00:48:41,760 how it broke apart what happened what 1395 00:48:46,710 --> 00:48:44,400 sort of impact it had uh we we have 1396 00:48:48,710 --> 00:48:46,720 another imaging opportunity coming up 1397 00:48:50,549 --> 00:48:48,720 six days after landing where we're going 1398 00:48:52,630 --> 00:48:50,559 to take another high-rise image of the 1399 00:48:55,190 --> 00:48:52,640 lander and also of the the descent stage 1400 00:48:57,109 --> 00:48:55,200 debris field that will be a nader image 1401 00:48:58,630 --> 00:48:57,119 so it'll be better resolution cleaner 1402 00:48:59,910 --> 00:48:58,640 image and we might be able to see more 1403 00:49:03,349 --> 00:48:59,920 detail 1404 00:49:05,270 --> 00:49:03,359 we have currently because it was taken 1405 00:49:06,870 --> 00:49:05,280 at such an oblique angle 1406 00:49:08,230 --> 00:49:06,880 in order to see a lot of detail there so 1407 00:49:11,910 --> 00:49:08,240 we're really waiting for that for the 1408 00:49:16,470 --> 00:49:13,910 okay we'll go next uh here on the room 1409 00:49:19,430 --> 00:49:16,480 yeah hi uh this is for ben um 1410 00:49:20,630 --> 00:49:19,440 and as as someone who is perhaps not as 1411 00:49:28,390 --> 00:49:20,640 uh 1412 00:49:31,349 --> 00:49:28,400 could one go over again 1413 00:49:33,430 --> 00:49:31,359 what the the capabilities were relative 1414 00:49:35,270 --> 00:49:33,440 to a cell phone and two if you could 1415 00:49:36,870 --> 00:49:35,280 just maybe walk us through a little bit 1416 00:49:40,230 --> 00:49:36,880 as to how you could do that i mean how 1417 00:49:41,430 --> 00:49:40,240 you can have so much capability on mars 1418 00:49:45,430 --> 00:49:41,440 based on 1419 00:49:46,630 --> 00:49:45,440 uh on software that is 1420 00:49:48,230 --> 00:49:46,640 less than what you're going to have in a 1421 00:49:50,790 --> 00:49:48,240 cell phone 1422 00:49:52,390 --> 00:49:50,800 yeah so the the rover has a uh a 1423 00:49:53,990 --> 00:49:52,400 radiation hardened processor in it 1424 00:49:56,710 --> 00:49:54,000 actually has two of them in its two 1425 00:49:59,910 --> 00:49:56,720 redundant compute elements uh the the 1426 00:50:01,510 --> 00:49:59,920 processor runs at 133 megahertz so if 1427 00:50:02,950 --> 00:50:01,520 you think about your phone having a one 1428 00:50:04,870 --> 00:50:02,960 gigahertz processor in it and your 1429 00:50:06,790 --> 00:50:04,880 desktop now having a two gigahertz or 1430 00:50:09,589 --> 00:50:06,800 two and a half gigahertz processor in it 1431 00:50:12,230 --> 00:50:09,599 uh the the processing power in our rover 1432 00:50:14,630 --> 00:50:12,240 is much less but we do have two full 1433 00:50:16,230 --> 00:50:14,640 computers in the rover so we have both a 1434 00:50:19,030 --> 00:50:16,240 prime and a redundant backup that's 1435 00:50:20,069 --> 00:50:19,040 there um and they have onboard flash 1436 00:50:22,710 --> 00:50:20,079 storage in them so when i talked about 1437 00:50:24,549 --> 00:50:22,720 the storage of the the of my phone my 1438 00:50:26,309 --> 00:50:24,559 phone has 64 gigabytes of storage the 1439 00:50:29,270 --> 00:50:26,319 rover has four gigabytes of storage in 1440 00:50:30,950 --> 00:50:29,280 it um but what we're able to do is that 1441 00:50:32,950 --> 00:50:30,960 since we're designing this custom 1442 00:50:34,390 --> 00:50:32,960 software for it we're able to optimize 1443 00:50:36,549 --> 00:50:34,400 that software for the particular 1444 00:50:38,950 --> 00:50:36,559 application that we want to do and so 1445 00:50:40,549 --> 00:50:38,960 when we were writing the edl software we 1446 00:50:41,910 --> 00:50:40,559 knew of the limitations of our processor 1447 00:50:43,670 --> 00:50:41,920 and we were able to 1448 00:50:45,829 --> 00:50:43,680 focus it just for what we needed to do 1449 00:50:46,950 --> 00:50:45,839 to get done with the edl to make edl 1450 00:50:49,030 --> 00:50:46,960 successful 1451 00:50:51,030 --> 00:50:49,040 and when you have a team that's a you 1452 00:50:52,630 --> 00:50:51,040 know really a world-class talented 1453 00:50:55,030 --> 00:50:52,640 software team and you give them a 1454 00:50:56,470 --> 00:50:55,040 challenge like make edl work on this 1455 00:50:58,150 --> 00:50:56,480 processor they're going to find a way to 1456 00:50:59,910 --> 00:50:58,160 do it and so it's really the ultimate 1457 00:51:01,910 --> 00:50:59,920 reason about how we're able to do it is 1458 00:51:03,270 --> 00:51:01,920 that we have a lot of very very talented 1459 00:51:05,109 --> 00:51:03,280 software engineers a really talented 1460 00:51:06,950 --> 00:51:05,119 software engineering team that when 1461 00:51:08,309 --> 00:51:06,960 they're given a challenge they solved it 1462 00:51:10,950 --> 00:51:08,319 and they were able to get it to work on 1463 00:51:12,150 --> 00:51:10,960 the on a on a slower processor 1464 00:51:13,990 --> 00:51:12,160 and then so one of the reasons why we 1465 00:51:14,950 --> 00:51:14,000 wait for the the r10 flight software is 1466 00:51:16,710 --> 00:51:14,960 that now we can have a version of 1467 00:51:18,950 --> 00:51:16,720 software that is optimized for the 1468 00:51:20,710 --> 00:51:18,960 surface and so we can have we can write 1469 00:51:22,230 --> 00:51:20,720 that custom software that now can just 1470 00:51:23,349 --> 00:51:22,240 focus on the surface part of the mission 1471 00:51:24,630 --> 00:51:23,359 and doesn't need to worry about some of 1472 00:51:26,390 --> 00:51:24,640 the control loops and some of the 1473 00:51:27,589 --> 00:51:26,400 additional processing overhead that 1474 00:51:30,309 --> 00:51:27,599 loads down the system when you're 1475 00:51:31,910 --> 00:51:30,319 running edl and so by going to r10 we're 1476 00:51:34,150 --> 00:51:31,920 actually freeing up some of our 1477 00:51:35,750 --> 00:51:34,160 processor utilization so we actually get 1478 00:51:37,270 --> 00:51:35,760 a lower utilization it's like closing a 1479 00:51:39,030 --> 00:51:37,280 few applications on your computer and 1480 00:51:41,589 --> 00:51:39,040 wow the whole thing runs faster and now 1481 00:51:44,309 --> 00:51:41,599 i can drive so that's what we want to do 1482 00:51:45,990 --> 00:51:44,319 and processing doesn't change at all 1483 00:51:48,390 --> 00:51:46,000 even though 1484 00:51:49,829 --> 00:51:48,400 you're going to need more 1485 00:51:51,270 --> 00:51:49,839 it's going to be doing a lot more things 1486 00:51:53,030 --> 00:51:51,280 now on the surface 1487 00:51:55,190 --> 00:51:53,040 right well the the core processor speed 1488 00:51:57,430 --> 00:51:55,200 doesn't change but we we are running a 1489 00:51:59,030 --> 00:51:57,440 lot less stuff and that's that's how we 1490 00:52:01,190 --> 00:51:59,040 we gain back some of that margin to be 1491 00:52:02,309 --> 00:52:01,200 able to uh to run the great surface 1492 00:52:05,829 --> 00:52:02,319 science applications that are going to 1493 00:52:09,589 --> 00:52:07,990 yes and and shout out from the front row 1494 00:52:11,990 --> 00:52:09,599 yes the processor is much faster than 1495 00:52:12,950 --> 00:52:12,000 the murder processor that we have 1496 00:52:14,630 --> 00:52:12,960 all right next i'm going to go to the 1497 00:52:16,390 --> 00:52:14,640 phone line we have irene claus from 1498 00:52:18,390 --> 00:52:16,400 reuters go ahead 1499 00:52:20,390 --> 00:52:18,400 um thanks very much i i have two 1500 00:52:22,150 --> 00:52:20,400 questions the first is um 1501 00:52:24,069 --> 00:52:22,160 following up i think it was the first 1502 00:52:27,030 --> 00:52:24,079 question about the um 1503 00:52:30,549 --> 00:52:27,040 homing in this uh landing target even 1504 00:52:32,549 --> 00:52:30,559 more because this sky crew system is 1505 00:52:34,950 --> 00:52:32,559 kind of being touted as a 1506 00:52:37,430 --> 00:52:34,960 i think the phrase was a workhorse for 1507 00:52:39,510 --> 00:52:37,440 the future i was just wondering if the 1508 00:52:40,790 --> 00:52:39,520 precision that you were able to get with 1509 00:52:43,750 --> 00:52:40,800 curiosity 1510 00:52:46,390 --> 00:52:43,760 is indeed going to make the cut for 1511 00:52:47,910 --> 00:52:46,400 you know future missions including like 1512 00:52:49,510 --> 00:52:47,920 supplies or 1513 00:52:51,270 --> 00:52:49,520 some of these other kind of farther off 1514 00:52:52,549 --> 00:52:51,280 things that have been talked about and 1515 00:52:54,309 --> 00:52:52,559 if you could maybe just flesh out a 1516 00:52:57,510 --> 00:52:54,319 little bit more by what you said about 1517 00:53:00,470 --> 00:52:57,520 being able to tweak that by a few miles 1518 00:53:02,549 --> 00:53:00,480 what what exactly would that entail sure 1519 00:53:03,990 --> 00:53:02,559 so i mean one of the important things 1520 00:53:05,589 --> 00:53:04,000 that curiosity does is demonstrate that 1521 00:53:07,670 --> 00:53:05,599 guided entry as we've seen here on earth 1522 00:53:09,030 --> 00:53:07,680 works on mars and that's an incredible 1523 00:53:11,670 --> 00:53:09,040 tool for the future missions to take 1524 00:53:18,470 --> 00:53:13,270 the 1525 00:53:20,870 --> 00:53:18,480 future um are we looking to land at a 1526 00:53:22,790 --> 00:53:20,880 particular target to to land near a base 1527 00:53:24,150 --> 00:53:22,800 or a sample that we want to bring back 1528 00:53:25,430 --> 00:53:24,160 um there 1529 00:53:28,069 --> 00:53:25,440 it really depends on the mission but i 1530 00:53:29,510 --> 00:53:28,079 think there are a few things that 1531 00:53:31,030 --> 00:53:29,520 we've already imagined and i think we'll 1532 00:53:32,470 --> 00:53:31,040 come up with some other ideas after we 1533 00:53:34,069 --> 00:53:32,480 look at the data to figure out how much 1534 00:53:36,150 --> 00:53:34,079 more we can can 1535 00:53:37,589 --> 00:53:36,160 finesse that ellipse and 1536 00:53:38,950 --> 00:53:37,599 and make it better yeah i think it's 1537 00:53:41,109 --> 00:53:38,960 safe to say that we're already looking 1538 00:53:43,190 --> 00:53:41,119 at it yeah 1539 00:53:47,030 --> 00:53:43,200 um thanks and then my other question i 1540 00:53:49,109 --> 00:53:47,040 think i saw a uh jpl blog post that uh 1541 00:53:51,349 --> 00:53:49,119 rob manning won the 1542 00:53:53,910 --> 00:53:51,359 the the bingo game of where it was gonna 1543 00:53:56,309 --> 00:53:53,920 land and uh just was curious if there 1544 00:54:00,309 --> 00:53:56,319 was any uh any anything more than 1545 00:54:01,190 --> 00:54:00,319 accolades with that with that gas 1546 00:54:05,430 --> 00:54:01,200 uh 1547 00:54:07,750 --> 00:54:05,440 bingo games 1548 00:54:09,910 --> 00:54:07,760 uh among different groups of people uh 1549 00:54:12,230 --> 00:54:09,920 the biggest one was a giant poster about 1550 00:54:14,790 --> 00:54:12,240 10 feet long that was printed out and 1551 00:54:16,630 --> 00:54:14,800 rob manning indeed was the closest 1552 00:54:18,630 --> 00:54:16,640 rob manning was also one of what we call 1553 00:54:20,790 --> 00:54:18,640 our grumlins who operated some of the 1554 00:54:27,030 --> 00:54:20,800 readiness testing so we believe he may 1555 00:54:30,390 --> 00:54:28,549 okay we're coming 1556 00:54:32,150 --> 00:54:30,400 back in the room and john johnson go 1557 00:54:34,390 --> 00:54:32,160 ahead 1558 00:54:36,790 --> 00:54:34,400 i just wanted a little more information 1559 00:54:38,950 --> 00:54:36,800 if any of you have it about that already 1560 00:54:40,710 --> 00:54:38,960 iconic photograph of the 1561 00:54:41,829 --> 00:54:40,720 parachute descending in the with the 1562 00:54:44,309 --> 00:54:41,839 rover 1563 00:54:46,870 --> 00:54:44,319 below it um is can you 1564 00:54:49,510 --> 00:54:46,880 this this picture had to be programmed 1565 00:54:51,990 --> 00:54:49,520 far in advance is that right to be taken 1566 00:54:53,670 --> 00:54:52,000 yeah that's right we had to give the uh 1567 00:54:55,349 --> 00:54:53,680 in fact we provided the first timing 1568 00:54:57,030 --> 00:54:55,359 that we wanted this parachute picture to 1569 00:54:59,670 --> 00:54:57,040 be taken uh 1570 00:55:01,750 --> 00:54:59,680 way uh back in april uh it was 1571 00:55:03,990 --> 00:55:01,760 originally it's targeted for about six 1572 00:55:05,750 --> 00:55:04,000 minutes after entry uh the goal was to 1573 00:55:07,510 --> 00:55:05,760 make sure that you know remember things 1574 00:55:09,750 --> 00:55:07,520 are focused on in case things don't go 1575 00:55:11,510 --> 00:55:09,760 well not if things do go well 1576 00:55:13,109 --> 00:55:11,520 but the idea was to get a picture to 1577 00:55:15,270 --> 00:55:13,119 make sure that we saw an inflated 1578 00:55:17,750 --> 00:55:15,280 parachute or not an inflated parachute 1579 00:55:19,670 --> 00:55:17,760 to see if there was any damage or not 1580 00:55:20,950 --> 00:55:19,680 so the goal was to take it long enough 1581 00:55:23,270 --> 00:55:20,960 into entry to make sure the parachute 1582 00:55:29,510 --> 00:55:23,280 was inflated but not so late that it had 1583 00:55:32,470 --> 00:55:31,030 it's it's certainly very difficult it 1584 00:55:34,069 --> 00:55:32,480 was certainly a little bit more 1585 00:55:36,069 --> 00:55:34,079 uncertain this time than it was for 1586 00:55:38,150 --> 00:55:36,079 phoenix per se because 1587 00:55:41,510 --> 00:55:38,160 mro is coming which took the picture the 1588 00:55:43,270 --> 00:55:41,520 high-rise the high-rise camera is on mro 1589 00:55:45,589 --> 00:55:43,280 that's right and it's coming overhead 1590 00:55:47,750 --> 00:55:45,599 almost directly overhead so we had to be 1591 00:55:49,990 --> 00:55:47,760 in the middle roughly five and a half 1592 00:55:52,230 --> 00:55:50,000 six kilometers of the uh with it of the 1593 00:55:53,430 --> 00:55:52,240 landing target to uh to make sure we 1594 00:55:55,430 --> 00:55:53,440 were in the picture 1595 00:55:56,630 --> 00:55:55,440 uh guided entry helped with that a lot 1596 00:55:58,950 --> 00:55:56,640 obviously we wouldn't be there without 1597 00:56:00,470 --> 00:55:58,960 guided entry uh so it's a 1598 00:56:02,069 --> 00:56:00,480 it's a also this picture is also a 1599 00:56:03,829 --> 00:56:02,079 confirmation of the precision with which 1600 00:56:06,230 --> 00:56:03,839 we landed 1601 00:56:09,109 --> 00:56:06,240 just some stats on on that photograph it 1602 00:56:12,470 --> 00:56:09,119 was uh it's about uh 1603 00:56:15,829 --> 00:56:12,480 one second or so before mle priming so 1604 00:56:17,750 --> 00:56:15,839 we're at an altitude here of about 3000 1605 00:56:19,270 --> 00:56:17,760 meters just a little bit uh right around 1606 00:56:21,910 --> 00:56:19,280 3000 meters 1607 00:56:23,990 --> 00:56:21,920 and uh descending probably about 1608 00:56:24,950 --> 00:56:24,000 uh about 80 meters per second at this 1609 00:56:26,549 --> 00:56:24,960 point 1610 00:56:29,589 --> 00:56:26,559 and i'll add one more thing clearly we 1611 00:56:34,950 --> 00:56:32,630 pre pre-landing day uh we guessed we had 1612 00:56:37,589 --> 00:56:34,960 about a 50 50 chance of actually getting 1613 00:56:38,870 --> 00:56:37,599 this picture uh just based on the fact 1614 00:56:40,630 --> 00:56:38,880 that the field of view of the high-rise 1615 00:56:44,950 --> 00:56:40,640 camera doesn't cover the entire landing 1616 00:56:46,069 --> 00:56:44,960 ellipse so it was about 50 50. 1617 00:56:46,950 --> 00:56:46,079 okay we're going to take one more here 1618 00:56:50,230 --> 00:56:46,960 in the room and then we'll go to the 1619 00:56:51,430 --> 00:56:50,240 phone lines go ahead yeah i i 1620 00:56:52,950 --> 00:56:51,440 i just want to double check when does 1621 00:56:55,190 --> 00:56:52,960 this the installation of the software 1622 00:56:57,190 --> 00:56:55,200 upgrade begin on earth time would that 1623 00:56:58,309 --> 00:56:57,200 be like tomorrow or 1624 00:56:59,349 --> 00:56:58,319 and like how long and it's supposed to 1625 00:57:01,109 --> 00:56:59,359 go for four days you know when it's 1626 00:57:03,430 --> 00:57:01,119 supposed to end earth time approximately 1627 00:57:05,349 --> 00:57:03,440 right so it's it's it goes through saw 1628 00:57:07,270 --> 00:57:05,359 eight so it starts on five so it starts 1629 00:57:09,030 --> 00:57:07,280 today and starts later today earth time 1630 00:57:10,870 --> 00:57:09,040 right and it goes through saw eight so 1631 00:57:11,829 --> 00:57:10,880 four days from today 1632 00:57:13,589 --> 00:57:11,839 okay and then the other thing is that 1633 00:57:16,069 --> 00:57:13,599 what can can you guys just we're quickly 1634 00:57:18,309 --> 00:57:16,079 kind of more in a succinct more uh 1635 00:57:21,190 --> 00:57:18,319 consumer friendly way explain like the 1636 00:57:23,670 --> 00:57:21,200 what you think were the factors in in in 1637 00:57:24,549 --> 00:57:23,680 the there being a 1.5 1638 00:57:27,270 --> 00:57:24,559 mile 1639 00:57:30,309 --> 00:57:27,280 deviation from the you know your your 1640 00:57:32,390 --> 00:57:30,319 ideal landing sure spot well i mean it 1641 00:57:33,670 --> 00:57:32,400 was all ideal right it was inside 1642 00:57:35,670 --> 00:57:33,680 inside the ellipse 1643 00:57:38,630 --> 00:57:35,680 but the uh so we're still looking at the 1644 00:57:40,390 --> 00:57:38,640 data but as i tried to explain before 1645 00:57:43,589 --> 00:57:40,400 we had a bank reversal 1646 00:57:45,030 --> 00:57:43,599 uh pretty late and that basically lofts 1647 00:57:46,150 --> 00:57:45,040 us a little bit basically stretches us a 1648 00:57:47,510 --> 00:57:46,160 little bit out and we didn't have time 1649 00:57:49,270 --> 00:57:47,520 to correct for that 1650 00:57:50,950 --> 00:57:49,280 before we started aligning it to fly 1651 00:57:52,950 --> 00:57:50,960 right towards the center of the 1652 00:57:55,510 --> 00:57:52,960 along the center line of the ellipse 1653 00:57:57,270 --> 00:57:55,520 so we think that's part of it um 1654 00:57:59,190 --> 00:57:57,280 as al's mentioned before we're also 1655 00:58:01,190 --> 00:57:59,200 sensitive in terms of where we land the 1656 00:58:02,950 --> 00:58:01,200 ellipse due to headwind or tail when 1657 00:58:03,829 --> 00:58:02,960 compared to what we were expecting and 1658 00:58:05,030 --> 00:58:03,839 so that's only one of the things we 1659 00:58:06,789 --> 00:58:05,040 tried to reconstruct is what were the 1660 00:58:09,030 --> 00:58:06,799 winds doing the day we landed 1661 00:58:10,230 --> 00:58:09,040 and how did that shift where we where we 1662 00:58:11,670 --> 00:58:10,240 landed you thought it might have been a 1663 00:58:13,030 --> 00:58:11,680 tailwind in this case 1664 00:58:14,870 --> 00:58:13,040 it would suggest that but we'll have to 1665 00:58:16,390 --> 00:58:14,880 look at it 1666 00:58:17,750 --> 00:58:16,400 thank you 1667 00:58:18,950 --> 00:58:17,760 all right we're going to the phone line 1668 00:58:21,430 --> 00:58:18,960 leonard david 1669 00:58:23,589 --> 00:58:21,440 with aerospace america go ahead yeah hi 1670 00:58:25,109 --> 00:58:23,599 leonard david here um 1671 00:58:26,870 --> 00:58:25,119 you've kind of already touched on some 1672 00:58:28,470 --> 00:58:26,880 of this but i hate to drag you back 1673 00:58:30,549 --> 00:58:28,480 there but uh 1674 00:58:32,870 --> 00:58:30,559 if you were an astrobiologist on this 1675 00:58:35,190 --> 00:58:32,880 mission you probably would be a little 1676 00:58:38,789 --> 00:58:35,200 concerned about the kick-up of 1677 00:58:41,270 --> 00:58:38,799 of material off mars and scattering on 1678 00:58:43,430 --> 00:58:41,280 top of the rover 1679 00:58:45,829 --> 00:58:43,440 is there anything that could be done 1680 00:58:47,109 --> 00:58:45,839 with longer tethers or less powerful 1681 00:58:49,430 --> 00:58:47,119 engines or 1682 00:58:51,750 --> 00:58:49,440 anything like that that 1683 00:58:53,670 --> 00:58:51,760 would fit into a new 1684 00:58:55,109 --> 00:58:53,680 design of a sky crane particularly if 1685 00:58:56,470 --> 00:58:55,119 we're really going to be using that 1686 00:58:58,789 --> 00:58:56,480 particular 1687 00:59:02,309 --> 00:58:58,799 device in the future 1688 00:59:04,549 --> 00:59:02,319 sure certainly one way that you could 1689 00:59:06,390 --> 00:59:04,559 one way that you could help mitigate uh 1690 00:59:08,230 --> 00:59:06,400 doing this is actually using a longer 1691 00:59:09,190 --> 00:59:08,240 tether but 1692 00:59:14,470 --> 00:59:09,200 we 1693 00:59:16,470 --> 00:59:14,480 development of uh during development of 1694 00:59:18,789 --> 00:59:16,480 curiosity and 1695 00:59:21,190 --> 00:59:18,799 we tried to keep the 1696 00:59:23,589 --> 00:59:21,200 strike the balance between keeping the 1697 00:59:25,510 --> 00:59:23,599 bridles short and short enough to be 1698 00:59:27,190 --> 00:59:25,520 manageable and 1699 00:59:29,589 --> 00:59:27,200 reducing the amount of debris that we 1700 00:59:32,789 --> 00:59:29,599 would kick up and all along we consulted 1701 00:59:34,870 --> 00:59:32,799 with the instruments and the the people 1702 00:59:37,589 --> 00:59:34,880 who were the cognizant engineers on the 1703 00:59:39,829 --> 00:59:37,599 rover top deck to make sure that they 1704 00:59:42,150 --> 00:59:39,839 were in the loop about uh knowing that 1705 00:59:44,390 --> 00:59:42,160 debris could be up there and and to what 1706 00:59:46,230 --> 00:59:44,400 extent it could be there and so 1707 00:59:48,230 --> 00:59:46,240 everything that that we've seen in the 1708 00:59:50,069 --> 00:59:48,240 pictures and the data that we've got 1709 00:59:51,990 --> 00:59:50,079 during landing it's all 1710 00:59:55,030 --> 00:59:52,000 all as expected 1711 00:59:57,109 --> 00:59:55,040 okay thanks very much 1712 00:59:59,589 --> 00:59:57,119 okay we've got another call on the phone 1713 01:00:01,510 --> 00:59:59,599 line it's mike wahl from space.com go 1714 01:00:03,510 --> 01:00:01,520 ahead 1715 01:00:04,950 --> 01:00:03,520 yeah like i've got two questions for for 1716 01:00:06,549 --> 01:00:04,960 ben first of all could you just actually 1717 01:00:07,589 --> 01:00:06,559 confirm that the 1718 01:00:09,030 --> 01:00:07,599 the 1719 01:00:10,789 --> 01:00:09,040 actual surface software that you're 1720 01:00:13,030 --> 01:00:10,799 going to switch over to that that was 1721 01:00:14,309 --> 01:00:13,040 being to the rover during cruise right i 1722 01:00:16,789 --> 01:00:14,319 just want to make sure that i understand 1723 01:00:18,230 --> 01:00:16,799 that correctly and it wasn't set 1724 01:00:20,390 --> 01:00:18,240 an extent from work for the last few 1725 01:00:22,950 --> 01:00:20,400 days and also i mean is there any 1726 01:00:24,630 --> 01:00:22,960 science that that the rover can be doing 1727 01:00:26,150 --> 01:00:24,640 during during the installation or is it 1728 01:00:29,670 --> 01:00:26,160 going to be pretty pretty quiet on the 1729 01:00:31,750 --> 01:00:29,680 science front for the next few days 1730 01:00:34,150 --> 01:00:31,760 so on the first question uh yeah we we 1731 01:00:36,630 --> 01:00:34,160 uploaded this software during cruise 1732 01:00:38,230 --> 01:00:36,640 and had it stored on the the file system 1733 01:00:40,870 --> 01:00:38,240 ready to be installed once we got down 1734 01:00:42,630 --> 01:00:40,880 to the surface on surface of mars 1735 01:00:43,990 --> 01:00:42,640 we do have just for background we do 1736 01:00:45,589 --> 01:00:44,000 have the capability to upload software 1737 01:00:47,510 --> 01:00:45,599 while we're on the surface and we do 1738 01:00:49,670 --> 01:00:47,520 actually plan to continue to update the 1739 01:00:51,750 --> 01:00:49,680 software as we go through the mission so 1740 01:00:53,030 --> 01:00:51,760 this isn't it didn't necessarily need to 1741 01:00:54,230 --> 01:00:53,040 be uploaded in cruise but we had an 1742 01:00:55,829 --> 01:00:54,240 opportunity to do that and the software 1743 01:00:57,349 --> 01:00:55,839 is ready to go so we chose the app we 1744 01:00:58,549 --> 01:00:57,359 chose that as the opportunity to upload 1745 01:01:00,950 --> 01:00:58,559 the software 1746 01:01:02,470 --> 01:01:00,960 um as far as science goes over the next 1747 01:01:04,549 --> 01:01:02,480 few solves this is primarily an 1748 01:01:07,109 --> 01:01:04,559 engineering activity um 1749 01:01:08,870 --> 01:01:07,119 so we are we are mostly focusing on just 1750 01:01:10,710 --> 01:01:08,880 getting done the engineering of doing 1751 01:01:13,510 --> 01:01:10,720 the installation and standing down on 1752 01:01:15,829 --> 01:01:13,520 science for the next four songs 1753 01:01:17,829 --> 01:01:15,839 thank you 1754 01:01:18,630 --> 01:01:17,839 okay we're going now here in front go 1755 01:01:20,710 --> 01:01:18,640 ahead 1756 01:01:22,870 --> 01:01:20,720 hi there sally rail with planetary 1757 01:01:25,430 --> 01:01:22,880 society 1758 01:01:28,470 --> 01:01:25,440 were there any surprises 1759 01:01:30,789 --> 01:01:28,480 in edl at all or would it be safe to say 1760 01:01:35,190 --> 01:01:30,799 that the biggest surprise was that it 1761 01:01:38,870 --> 01:01:36,630 there were a couple surprises i think 1762 01:01:40,549 --> 01:01:38,880 that we're going to look into 1763 01:01:42,630 --> 01:01:40,559 you know we landed with 1764 01:01:43,910 --> 01:01:42,640 more fuel than i think we expected a 1765 01:01:45,910 --> 01:01:43,920 little bit more fuel than we think you 1766 01:01:47,109 --> 01:01:45,920 expected not a bad situation to be in 1767 01:01:48,870 --> 01:01:47,119 necessarily 1768 01:01:50,470 --> 01:01:48,880 but it's something we we definitely want 1769 01:01:53,270 --> 01:01:50,480 to take a look at 1770 01:01:55,589 --> 01:01:53,280 there were also a couple of uh of tone 1771 01:01:57,349 --> 01:01:55,599 indications uh sent direct to earth uh 1772 01:01:59,510 --> 01:01:57,359 that uh also 1773 01:02:01,430 --> 01:01:59,520 you know seem unlikely so we wanna take 1774 01:02:04,069 --> 01:02:01,440 a look take a look at that as well uh to 1775 01:02:05,670 --> 01:02:04,079 see if anything is real there too uh you 1776 01:02:07,589 --> 01:02:05,680 know again we're working with one 1777 01:02:09,270 --> 01:02:07,599 megabyte of the 60 megabytes or 100 1778 01:02:11,270 --> 01:02:09,280 megabytes excuse me that we eventually 1779 01:02:13,430 --> 01:02:11,280 hope to get so i think the best thing 1780 01:02:14,950 --> 01:02:13,440 for us to do now is kind of wait and see 1781 01:02:16,710 --> 01:02:14,960 get that full data set and go through 1782 01:02:19,270 --> 01:02:16,720 that in detail that'll answer all our 1783 01:02:21,670 --> 01:02:19,280 questions okay and a personal question 1784 01:02:25,190 --> 01:02:21,680 for you alan you have been through 1785 01:02:26,789 --> 01:02:25,200 landing before with mer you announced um 1786 01:02:29,270 --> 01:02:26,799 the curiosity landy and i'm just 1787 01:02:32,309 --> 01:02:29,280 wondering how does that fit in your 1788 01:02:33,750 --> 01:02:32,319 repertoire of life moments 1789 01:02:37,190 --> 01:02:33,760 certainly way up there this has been an 1790 01:02:40,470 --> 01:02:38,630 thank you thank you 1791 01:02:41,990 --> 01:02:40,480 all right lee right with irish 1792 01:02:43,750 --> 01:02:42,000 television i just wanted to follow up on 1793 01:02:47,430 --> 01:02:43,760 leonard david's question 1794 01:02:49,109 --> 01:02:47,440 um about the descent stage 1795 01:02:51,349 --> 01:02:49,119 looking to the future since this seems 1796 01:02:52,230 --> 01:02:51,359 to be a game changer potentially 1797 01:02:54,309 --> 01:02:52,240 um 1798 01:02:55,750 --> 01:02:54,319 are there obvious uh 1799 01:02:57,829 --> 01:02:55,760 ways that you would do it differently 1800 01:02:58,950 --> 01:02:57,839 now for instance it would seem that it 1801 01:03:01,270 --> 01:02:58,960 was 1802 01:03:04,230 --> 01:03:01,280 dare i say over engineered for safety 1803 01:03:06,549 --> 01:03:04,240 reasons you used viking legacy jets and 1804 01:03:07,910 --> 01:03:06,559 so on uh are there 1805 01:03:10,150 --> 01:03:07,920 obvious things that you would do 1806 01:03:11,990 --> 01:03:10,160 differently straight away and do you 1807 01:03:14,630 --> 01:03:12,000 envisage that that this would be a much 1808 01:03:15,589 --> 01:03:14,640 lighter and meaner vehicle uh next time 1809 01:03:17,029 --> 01:03:15,599 around 1810 01:03:19,109 --> 01:03:17,039 well 1811 01:03:21,349 --> 01:03:19,119 there are minor things that we would 1812 01:03:23,750 --> 01:03:21,359 probably change if we had to do it again 1813 01:03:25,029 --> 01:03:23,760 but you know one of the one of the best 1814 01:03:26,390 --> 01:03:25,039 ways to do 1815 01:03:28,470 --> 01:03:26,400 lower cost 1816 01:03:29,670 --> 01:03:28,480 more reliable missions is to stick with 1817 01:03:30,870 --> 01:03:29,680 what works 1818 01:03:32,549 --> 01:03:30,880 and 1819 01:03:34,710 --> 01:03:32,559 you know i wouldn't say that the system 1820 01:03:37,510 --> 01:03:34,720 was was over designed at all i mean it 1821 01:03:39,910 --> 01:03:37,520 was designed to allow the scientists to 1822 01:03:41,670 --> 01:03:39,920 choose where they wanted to explore on 1823 01:03:44,710 --> 01:03:41,680 mars they happened to 1824 01:03:47,829 --> 01:03:44,720 pick a place that had a nice flat 1825 01:03:50,069 --> 01:03:47,839 landing pad right next to it and so 1826 01:03:52,390 --> 01:03:50,079 as an edl team we kind of got lucky 1827 01:03:55,190 --> 01:03:52,400 because the the science store they 1828 01:03:56,549 --> 01:03:55,200 wanted to go to had a parking lot and so 1829 01:04:01,109 --> 01:03:56,559 we were 1830 01:04:03,270 --> 01:04:01,119 of that and uh had we landed on you know 1831 01:04:04,870 --> 01:04:03,280 we had we used the sky crane to its full 1832 01:04:07,029 --> 01:04:04,880 extent we would have been able to handle 1833 01:04:08,950 --> 01:04:07,039 uh much more rugged terrain much larger 1834 01:04:10,950 --> 01:04:08,960 rocks things like that so i wouldn't say 1835 01:04:12,470 --> 01:04:10,960 it's over designed and and things that 1836 01:04:15,349 --> 01:04:12,480 we would change in the future 1837 01:04:17,910 --> 01:04:15,359 uh you know just very minor very minor 1838 01:04:20,950 --> 01:04:19,430 okay we have a call on the line ken 1839 01:04:21,990 --> 01:04:20,960 kramer with space flight magazine go 1840 01:04:24,150 --> 01:04:22,000 ahead 1841 01:04:27,029 --> 01:04:24,160 hi thank you well congratulations first 1842 01:04:27,829 --> 01:04:27,039 on on a great success uh my question is 1843 01:04:29,910 --> 01:04:27,839 um 1844 01:04:32,230 --> 01:04:29,920 would you be able to apply any of these 1845 01:04:34,470 --> 01:04:32,240 guided entry techniques to the airbag 1846 01:04:36,710 --> 01:04:34,480 system if you had to go back to that to 1847 01:04:39,430 --> 01:04:36,720 make that a little bit you know far more 1848 01:04:41,670 --> 01:04:39,440 precise actually thank you 1849 01:04:42,710 --> 01:04:41,680 i believe we could but it would require 1850 01:04:45,349 --> 01:04:42,720 um 1851 01:04:47,190 --> 01:04:45,359 using rcs jets just like curiosity did 1852 01:04:48,470 --> 01:04:47,200 to basically control the uh the 1853 01:04:50,390 --> 01:04:48,480 orientation 1854 01:04:52,870 --> 01:04:50,400 during the hypersonic flight 1855 01:04:55,430 --> 01:04:52,880 um i don't think the mer rovers had that 1856 01:04:58,549 --> 01:04:55,440 capability so it would it would be a 1857 01:05:01,589 --> 01:04:59,750 thanks 1858 01:05:07,990 --> 01:05:01,599 okay any more questions here in the room 1859 01:05:12,230 --> 01:05:10,230 uh jonathan amos bbc again is there any 1860 01:05:14,470 --> 01:05:12,240 heat shield data 1861 01:05:16,789 --> 01:05:14,480 uh there is a medley data which is this 1862 01:05:18,710 --> 01:05:16,799 the mars edl instrumentation data uh 1863 01:05:20,789 --> 01:05:18,720 that instrumented the heat shield uh to 1864 01:05:22,470 --> 01:05:20,799 tell us about what was going on uh we 1865 01:05:23,990 --> 01:05:22,480 are just getting that data back now uh 1866 01:05:26,470 --> 01:05:24,000 some of that was sent in real time but 1867 01:05:28,309 --> 01:05:26,480 the the the recorded data parts of that 1868 01:05:29,990 --> 01:05:28,319 now are actually have gotten down and 1869 01:05:31,109 --> 01:05:30,000 we're beginning to look at that 1870 01:05:32,710 --> 01:05:31,119 i think it's safe to say we have the 1871 01:05:34,309 --> 01:05:32,720 data i think it's also safe to say that 1872 01:05:35,190 --> 01:05:34,319 we haven't looked through it in detail 1873 01:05:37,029 --> 01:05:35,200 yet 1874 01:05:39,430 --> 01:05:37,039 we do know that we we triggered several 1875 01:05:41,029 --> 01:05:39,440 tones during uh during edl that told us 1876 01:05:43,109 --> 01:05:41,039 that things were going pretty much as 1877 01:05:45,190 --> 01:05:43,119 expected that we did see heating on the 1878 01:05:47,190 --> 01:05:45,200 spacecraft but we don't have enough yet 1879 01:05:48,870 --> 01:05:47,200 to go through in detail about how well 1880 01:05:51,109 --> 01:05:48,880 the heat shield performed do you have a 1881 01:05:53,190 --> 01:05:51,119 peak temperature we don't right now i 1882 01:05:55,670 --> 01:05:53,200 think we need to look at uh exactly how 1883 01:05:57,190 --> 01:05:55,680 deep uh which thermocouples uh 1884 01:05:58,630 --> 01:05:57,200 we got measurements from and and what 1885 01:06:00,150 --> 01:05:58,640 those measurements were 1886 01:06:01,750 --> 01:06:00,160 the medley team is i'm sure already 1887 01:06:03,910 --> 01:06:01,760 beginning to look at information but we 1888 01:06:05,589 --> 01:06:03,920 need to correlate that as well against 1889 01:06:08,870 --> 01:06:05,599 the spacecraft trajectory data which 1890 01:06:12,870 --> 01:06:08,880 we're also waiting to get back down 1891 01:06:16,309 --> 01:06:14,470 mark kaufman again with washington post 1892 01:06:17,349 --> 01:06:16,319 in national geographic steve you had 1893 01:06:18,630 --> 01:06:17,359 said that 1894 01:06:22,470 --> 01:06:18,640 reusing 1895 01:06:24,470 --> 01:06:22,480 technology is the best way to cut cost 1896 01:06:25,829 --> 01:06:24,480 just in terms of a ballpark figure if 1897 01:06:27,589 --> 01:06:25,839 you were to do 1898 01:06:31,190 --> 01:06:27,599 something like this again i mean are we 1899 01:06:36,470 --> 01:06:33,750 i'm not falling into that trap but 1900 01:06:38,150 --> 01:06:36,480 uh you know i you know we would have to 1901 01:06:40,549 --> 01:06:38,160 we'd have to look at the numbers to see 1902 01:06:44,630 --> 01:06:40,559 exactly you know what what a rebuild of 1903 01:06:49,270 --> 01:06:45,670 okay 1904 01:06:51,430 --> 01:06:49,280 grotzinger in the room and he wants to 1905 01:06:54,470 --> 01:06:51,440 talk a little bit more about the naming 1906 01:06:56,309 --> 01:06:54,480 of that quadrangle so john go ahead 1907 01:06:57,990 --> 01:06:56,319 um i just want to make sure that 1908 01:06:59,670 --> 01:06:58,000 everybody's on the same page and i'm 1909 01:07:01,349 --> 01:06:59,680 happy to answer questions afterwards not 1910 01:07:02,470 --> 01:07:01,359 to detract from the great work these 1911 01:07:04,870 --> 01:07:02,480 guys have done 1912 01:07:06,950 --> 01:07:04,880 uh to point number one is this is not 1913 01:07:08,950 --> 01:07:06,960 the name of the landing site yellowknife 1914 01:07:10,630 --> 01:07:08,960 is the name of the quadrangle 1915 01:07:12,230 --> 01:07:10,640 and the reason that the science team 1916 01:07:15,190 --> 01:07:12,240 came up with that as an option is 1917 01:07:17,190 --> 01:07:15,200 because in north america if you ask what 1918 01:07:19,190 --> 01:07:17,200 is the port of call that you leave from 1919 01:07:21,349 --> 01:07:19,200 to go on the great missions of 1920 01:07:23,829 --> 01:07:21,359 geological mapping to the oldest rocks 1921 01:07:25,510 --> 01:07:23,839 in north america it's yellowknife you 1922 01:07:27,029 --> 01:07:25,520 can drive there you can fly there you 1923 01:07:29,109 --> 01:07:27,039 can't take a train there 1924 01:07:31,829 --> 01:07:29,119 and uh and from there you have to get in 1925 01:07:33,190 --> 01:07:31,839 a bush plane uh store some gear and go 1926 01:07:35,349 --> 01:07:33,200 off for several months at a time and 1927 01:07:36,710 --> 01:07:35,359 usually get picked up later on having 1928 01:07:38,710 --> 01:07:36,720 maps some old rocks so we thought it 1929 01:07:39,910 --> 01:07:38,720 would be kind of neat because our sort 1930 01:07:41,910 --> 01:07:39,920 of 1931 01:07:43,750 --> 01:07:41,920 mapping procedure 1932 01:07:46,549 --> 01:07:43,760 will involve moving between these 1933 01:07:48,309 --> 01:07:46,559 different quadrangles and it's sort of a 1934 01:07:51,510 --> 01:07:48,319 great tradition that was started here on 1935 01:07:53,430 --> 01:07:51,520 earth and we're trying to do it on mars 1936 01:07:54,950 --> 01:07:53,440 great thank you okay we have a question 1937 01:08:01,029 --> 01:07:54,960 at the very back 1938 01:08:04,950 --> 01:08:03,430 totten with kpcc um you know i was 1939 01:08:06,630 --> 01:08:04,960 wondering just i mean this landing 1940 01:08:08,150 --> 01:08:06,640 happened in the middle of the olympics 1941 01:08:09,670 --> 01:08:08,160 and i you know i think we all expected 1942 01:08:11,190 --> 01:08:09,680 to be a big deal but it is really caught 1943 01:08:12,470 --> 01:08:11,200 on i can't seem to turn on facebook or 1944 01:08:14,390 --> 01:08:12,480 twitter without 1945 01:08:16,789 --> 01:08:14,400 someone still talking about it or new 1946 01:08:19,510 --> 01:08:16,799 memes popping up animations you know 1947 01:08:21,189 --> 01:08:19,520 cats all over the rover now 1948 01:08:23,430 --> 01:08:21,199 i want to know a little bit if the sort 1949 01:08:25,269 --> 01:08:23,440 of total love and embrace that the 1950 01:08:27,030 --> 01:08:25,279 public seems to be giving it surprises 1951 01:08:28,390 --> 01:08:27,040 you a bit because you were just focused 1952 01:08:29,349 --> 01:08:28,400 on the science and kind of what what are 1953 01:08:30,550 --> 01:08:29,359 some of the more interesting things 1954 01:08:32,709 --> 01:08:30,560 you've seen 1955 01:08:34,149 --> 01:08:32,719 in the public sphere about this landing 1956 01:08:35,990 --> 01:08:34,159 and about curiosity have you gotten any 1957 01:08:37,110 --> 01:08:36,000 cool fan mail or any cool reactions from 1958 01:08:39,910 --> 01:08:37,120 people have you seen something that just 1959 01:08:42,149 --> 01:08:39,920 like totally tickled you 1960 01:08:43,590 --> 01:08:42,159 well i can i can say a few words about 1961 01:08:45,910 --> 01:08:43,600 that and i'll let everybody else on the 1962 01:08:48,709 --> 01:08:45,920 team chime in too but uh i i've actually 1963 01:08:50,950 --> 01:08:48,719 been overwhelmed by the the amount of uh 1964 01:08:52,390 --> 01:08:50,960 just the social media interaction i i 1965 01:08:55,510 --> 01:08:52,400 get questions on 1966 01:08:58,070 --> 01:08:55,520 on twitter and email and facebook and 1967 01:08:59,910 --> 01:08:58,080 it it's great to be able to to be 1968 01:09:01,590 --> 01:08:59,920 completely in touch with the public on 1969 01:09:02,709 --> 01:09:01,600 this i feel like it gives them an 1970 01:09:04,789 --> 01:09:02,719 opportunity to feel like they're 1971 01:09:07,110 --> 01:09:04,799 connected to this mission and after all 1972 01:09:08,950 --> 01:09:07,120 they paid for it so they should be 1973 01:09:11,990 --> 01:09:08,960 and uh 1974 01:09:13,349 --> 01:09:12,000 it was kind of hard to follow all of the 1975 01:09:15,030 --> 01:09:13,359 all of this 1976 01:09:16,229 --> 01:09:15,040 outside activities that were going on 1977 01:09:18,149 --> 01:09:16,239 when you're in the control room and 1978 01:09:20,630 --> 01:09:18,159 focused on making making sure we land 1979 01:09:22,630 --> 01:09:20,640 safely but uh but i've still it's it's 1980 01:09:24,390 --> 01:09:22,640 going to take me weeks to to get through 1981 01:09:28,470 --> 01:09:24,400 all of the 1982 01:09:29,749 --> 01:09:28,480 the twitter comments and and all the 1983 01:09:32,309 --> 01:09:29,759 other articles that have been online 1984 01:09:33,669 --> 01:09:32,319 it's just been amazing for me 1985 01:09:36,950 --> 01:09:33,679 i think i think it's great i think it 1986 01:09:39,430 --> 01:09:36,960 actually shows that that america the 1987 01:09:41,349 --> 01:09:39,440 world is interested in math and science 1988 01:09:44,390 --> 01:09:41,359 really when you break it down to that 1989 01:09:46,470 --> 01:09:44,400 so i i think it's uh it's it's great i 1990 01:09:49,829 --> 01:09:46,480 hope the communication and the social 1991 01:09:51,349 --> 01:09:49,839 media it keeps keeps rolling along um 1992 01:09:53,910 --> 01:09:51,359 especially now that we're in surface 1993 01:09:56,149 --> 01:09:53,920 operations things are also 1994 01:09:57,430 --> 01:09:56,159 just as exciting as edl 1995 01:09:58,550 --> 01:09:57,440 did you ever expect when you started 1996 01:10:02,149 --> 01:09:58,560 this mission though that you guys would 1997 01:10:03,750 --> 01:10:02,159 end up being such rock stars 1998 01:10:05,910 --> 01:10:03,760 i got recognized in the pizza parlor on 1999 01:10:08,470 --> 01:10:05,920 my day 2000 01:10:10,390 --> 01:10:08,480 that was a little weird for me 2001 01:10:12,470 --> 01:10:10,400 you know sometimes you worry that uh you 2002 01:10:13,750 --> 01:10:12,480 know that that as a as a people we're 2003 01:10:15,669 --> 01:10:13,760 not that interested in doing this 2004 01:10:16,550 --> 01:10:15,679 anymore but it's it's great to see that 2005 01:10:17,990 --> 01:10:16,560 we are 2006 01:10:22,790 --> 01:10:18,000 that 2007 01:10:25,910 --> 01:10:24,149 for me the 2008 01:10:28,229 --> 01:10:25,920 you know the the media attention the 2009 01:10:30,630 --> 01:10:28,239 social media has been overwhelming but 2010 01:10:32,550 --> 01:10:30,640 the the biggest surprise 2011 01:10:33,510 --> 01:10:32,560 to me having gone through this now is 2012 01:10:37,910 --> 01:10:33,520 the 2013 01:10:39,110 --> 01:10:37,920 associated with a successful landing and 2014 01:10:41,030 --> 01:10:39,120 the 2015 01:10:43,510 --> 01:10:41,040 how much that's amplified by having such 2016 01:10:45,030 --> 01:10:43,520 an awesome group of co-workers 2017 01:10:46,149 --> 01:10:45,040 uh you know there's thousands of people 2018 01:10:47,990 --> 01:10:46,159 that have put this together and 2019 01:10:50,630 --> 01:10:48,000 everybody's worked tirelessly with 2020 01:10:52,790 --> 01:10:50,640 tremendous dedication uh everybody here 2021 01:10:54,870 --> 01:10:52,800 is fantastic to work with and it just 2022 01:10:56,630 --> 01:10:54,880 makes it all the sweeter to to share the 2023 01:11:00,550 --> 01:10:56,640 triumph with such a fantastic group of 2024 01:11:03,750 --> 01:11:02,149 all right do we have any more questions 2025 01:11:07,990 --> 01:11:03,760 here in the room we've got one up here 2026 01:11:08,000 --> 01:11:10,790 okay 2027 01:11:14,310 --> 01:11:12,790 thanks craig cavall with aerospace 2028 01:11:17,669 --> 01:11:14,320 america again 2029 01:11:20,070 --> 01:11:17,679 uh how important was the two-year delay 2030 01:11:23,990 --> 01:11:20,080 to the ultimate success 2031 01:11:28,709 --> 01:11:25,910 i think it was critical um you know the 2032 01:11:31,270 --> 01:11:28,719 we we weren't ready uh in 2009 i think 2033 01:11:32,790 --> 01:11:31,280 uh you know of you know as a as a 2034 01:11:34,790 --> 01:11:32,800 mission we were not ready as a project 2035 01:11:36,229 --> 01:11:34,800 we were not ready you know it's it's 2036 01:11:37,910 --> 01:11:36,239 easy to point fingers but i mean we're 2037 01:11:39,430 --> 01:11:37,920 all in this together and you know having 2038 01:11:40,870 --> 01:11:39,440 that extra time certainly gave us the 2039 01:11:42,229 --> 01:11:40,880 opportunity to make sure that everything 2040 01:11:47,270 --> 01:11:42,239 was going to work right 2041 01:11:51,430 --> 01:11:49,669 okay i believe that is it no more 2042 01:11:53,270 --> 01:11:51,440 questions for today but i do want to 2043 01:11:55,350 --> 01:11:53,280 tell everyone that this is our final 2044 01:11:57,110 --> 01:11:55,360 news conference for this week but be 2045 01:11:59,430 --> 01:11:57,120 sure to follow us online we'll have 2046 01:12:01,510 --> 01:11:59,440 updates posted for our next news 2047 01:12:03,510 --> 01:12:01,520 telecons and of course all of our new 2048 01:12:09,030 --> 01:12:03,520 images and videos all of that 2049 01:12:13,990 --> 01:12:11,510 msl or at the jpl homepage at 2050 01:12:15,350 --> 01:12:14,000 jpl.nasa.gov 2051 01:12:17,669 --> 01:12:15,360 and we will have more news on the 2052 01:12:19,350 --> 01:12:17,679 mission next week so be sure to check 2053 01:12:21,270 --> 01:12:19,360 there and follow the mission we have a 2054 01:12:38,470 --> 01:12:21,280 long way to go thank you so much for