1 00:01:28,320 --> 00:01:31,429 okay 2 00:01:31,439 --> 00:01:37,749 good morning andy 3 00:01:40,310 --> 00:01:39,030 good morning 4 00:01:44,870 --> 00:01:40,320 and how are you just buying marine corps 5 00:01:44,880 --> 00:02:47,910 i'm always great on the marine corps day 6 00:02:52,869 --> 00:02:50,790 as you can see we got the second copy of 7 00:05:39,350 --> 00:02:52,879 the flight plan thanks 8 00:05:39,360 --> 00:05:42,790 okay dave go ahead 9 00:05:46,870 --> 00:05:45,029 okay as you know uh just as the 10 00:05:47,830 --> 00:05:46,880 satellite departed we 11 00:05:50,150 --> 00:05:47,840 uh 12 00:05:52,310 --> 00:05:50,160 disabled auto reconfiguration and 13 00:05:54,629 --> 00:05:52,320 therefore we should understand fully the 14 00:05:57,430 --> 00:05:54,639 configuration of the satellite and in 15 00:06:00,310 --> 00:05:57,440 our few passes we've made we've gotten 16 00:06:02,629 --> 00:06:00,320 two-way calm with esto through estell 17 00:06:04,950 --> 00:06:02,639 and we've found some unusual unexpected 18 00:06:07,270 --> 00:06:04,960 configurations on the satellite 19 00:06:09,990 --> 00:06:07,280 first of all as you know there are three 20 00:06:12,150 --> 00:06:10,000 modes we can command to the satellite 21 00:06:14,150 --> 00:06:12,160 two of those modes do not require the 22 00:06:15,909 --> 00:06:14,160 onboard satellite computer and we are 23 00:06:18,550 --> 00:06:15,919 successful in commanding with those 24 00:06:20,230 --> 00:06:18,560 modes only 25 00:06:22,629 --> 00:06:20,240 mode three which requires the computer 26 00:06:24,950 --> 00:06:22,639 we were unable to command 27 00:06:28,629 --> 00:06:24,960 and we are not able to reset the onboard 28 00:06:34,710 --> 00:06:30,790 we were able to turn rope on 29 00:06:36,469 --> 00:06:34,720 sla on the pvlas flashing and the 30 00:06:38,950 --> 00:06:36,479 ammeter on 31 00:06:41,029 --> 00:06:38,960 we cannot command the drbs we've turned 32 00:06:42,710 --> 00:06:41,039 on the earth sensors 33 00:06:44,950 --> 00:06:42,720 and we've gotten good response to all 34 00:06:46,710 --> 00:06:44,960 this based on bus currents to our 35 00:06:48,870 --> 00:06:46,720 commanding 36 00:06:50,870 --> 00:06:48,880 but our data does indicate we've had a 37 00:06:56,710 --> 00:06:50,880 global ram 38 00:06:58,629 --> 00:06:56,720 maybe the ram itself or uh interactions 39 00:07:03,830 --> 00:06:58,639 inter 40 00:07:07,029 --> 00:07:03,840 the the computer that doesn't appear to 41 00:07:09,029 --> 00:07:07,039 be running is required for amc amcs 42 00:07:10,550 --> 00:07:09,039 processing 43 00:07:12,150 --> 00:07:10,560 and um 44 00:07:13,189 --> 00:07:12,160 so we feel that that's not working 45 00:07:16,550 --> 00:07:13,199 correctly 46 00:07:18,870 --> 00:07:16,560 the xy gyros are running although the z 47 00:07:20,550 --> 00:07:18,880 gyro and the skew gyro we found powered 48 00:07:22,469 --> 00:07:20,560 off 49 00:07:24,230 --> 00:07:22,479 in terms of the nitrogen system and this 50 00:07:26,629 --> 00:07:24,240 was unexpected 51 00:07:29,110 --> 00:07:26,639 in terms of the nitrogen system the tank 52 00:07:31,510 --> 00:07:29,120 pressure reads near zero the take 53 00:07:34,150 --> 00:07:31,520 temperatures are very cold 54 00:07:35,830 --> 00:07:34,160 both consistent with a depletion of 55 00:07:38,629 --> 00:07:35,840 onboard nitrogen 56 00:07:41,510 --> 00:07:38,639 and our data indicated that both inline 57 00:07:43,749 --> 00:07:41,520 thrusters one and two and both main isil 58 00:07:46,390 --> 00:07:43,759 valves are open 59 00:07:48,309 --> 00:07:46,400 and depleted gas 60 00:07:49,909 --> 00:07:48,319 this is interesting because the onboard 61 00:07:51,990 --> 00:07:49,919 computer itself 62 00:07:53,189 --> 00:07:52,000 did not have the capability as you know 63 00:07:54,150 --> 00:07:53,199 to command 64 00:07:57,029 --> 00:07:54,160 both 65 00:07:59,670 --> 00:07:57,039 sets of inlines and isos open and our 66 00:08:02,070 --> 00:07:59,680 data indicates they are open 67 00:08:03,350 --> 00:08:02,080 we have another estel pass coming up in 68 00:08:05,189 --> 00:08:03,360 a little while we're going to make 69 00:08:07,110 --> 00:08:05,199 contact again 70 00:08:09,670 --> 00:08:07,120 we're going to command the isil valves 71 00:08:11,029 --> 00:08:09,680 closed along with the inline thruster 72 00:08:13,510 --> 00:08:11,039 valves 73 00:08:14,950 --> 00:08:13,520 and we're going to monitor response and 74 00:08:16,710 --> 00:08:14,960 try to be more certain that we're 75 00:08:20,070 --> 00:08:16,720 actually interacting with the satellite 76 00:08:22,629 --> 00:08:20,080 and not just seeing aberrant data 77 00:08:24,390 --> 00:08:22,639 the bus voltage is so good all above 30 78 00:08:27,189 --> 00:08:24,400 volts 79 00:08:29,589 --> 00:08:27,199 well the main bus is at 29.6 but the 80 00:08:31,670 --> 00:08:29,599 battery volts are above 30. 81 00:08:33,430 --> 00:08:31,680 we should have enough battery life to 82 00:08:35,909 --> 00:08:33,440 keep communicating with the satellite 83 00:08:38,149 --> 00:08:35,919 for one or two more days 84 00:08:39,750 --> 00:08:38,159 so we'll keep you status there's has 85 00:08:49,670 --> 00:08:39,760 been an event on the satellite that we 86 00:08:54,710 --> 00:08:51,670 okay i copy all that and appreciate the 87 00:08:56,710 --> 00:08:54,720 call on that and also i guess the 88 00:08:58,630 --> 00:08:56,720 one in it that comes up you'll give us a 89 00:09:02,310 --> 00:08:58,640 call sometime about fighting i guess 90 00:11:17,990 --> 00:09:04,070 absolutely we'll keep you informed and 91 00:11:21,910 --> 00:11:19,990 right i asked a group of sixth graders 92 00:11:23,190 --> 00:11:21,920 from wright denney elementary school in 93 00:11:25,030 --> 00:11:23,200 west virginia to come up with some 94 00:11:26,630 --> 00:11:25,040 questions for you today and many of 95 00:11:28,630 --> 00:11:26,640 these students want to know if you were 96 00:11:31,269 --> 00:11:28,640 ever scared during the mission let me 97 00:11:33,750 --> 00:11:31,279 direct that one to uh to jeff hoffman 98 00:11:35,509 --> 00:11:33,760 and to scott horowitz jeff you seemed 99 00:11:37,350 --> 00:11:35,519 pretty agitated when you reported the 100 00:11:43,750 --> 00:11:37,360 broken tether to mission control last 101 00:11:48,550 --> 00:11:45,990 well um 102 00:11:50,630 --> 00:11:48,560 it was a huge surprise i mean i i think 103 00:11:53,030 --> 00:11:50,640 what what you heard in my voice was 104 00:11:54,790 --> 00:11:53,040 definitely an urgency that uh 105 00:11:57,509 --> 00:11:54,800 that we may well have to do something 106 00:12:00,630 --> 00:11:57,519 and of course uh we've always known that 107 00:12:03,269 --> 00:12:00,640 if the tether breaks and it breaks 108 00:12:05,030 --> 00:12:03,279 uh at a long distance away from the the 109 00:12:06,870 --> 00:12:05,040 shuttle you know the tether is stretched 110 00:12:09,030 --> 00:12:06,880 a little bit when it's in space so it's 111 00:12:10,949 --> 00:12:09,040 like a it's like a huge rubber band that 112 00:12:12,550 --> 00:12:10,959 you've pulled out 113 00:12:14,470 --> 00:12:12,560 and if it breaks 114 00:12:17,430 --> 00:12:14,480 uh away from the shuttle then we've got 115 00:12:19,269 --> 00:12:17,440 that huge coiled rubber band coming down 116 00:12:22,470 --> 00:12:19,279 at us and we've got to do something 117 00:12:24,389 --> 00:12:22,480 about it uh that that's why 118 00:12:26,629 --> 00:12:24,399 andy allen is as soon as i called tether 119 00:12:28,150 --> 00:12:26,639 break rushed over to the window threw 120 00:12:29,430 --> 00:12:28,160 the camera out of the way i threw my 121 00:12:32,230 --> 00:12:29,440 camera away 122 00:12:34,550 --> 00:12:32,240 and uh you know we were ready to 123 00:12:35,430 --> 00:12:34,560 uh look at the tether coming back at us 124 00:12:39,030 --> 00:12:35,440 and 125 00:12:40,870 --> 00:12:39,040 clear of it 126 00:12:42,870 --> 00:12:40,880 you hardly have time to get scared in a 127 00:12:45,269 --> 00:12:42,880 situation like that because you really 128 00:12:47,030 --> 00:12:45,279 have to act and if you're 129 00:12:49,030 --> 00:12:47,040 if you're really scared then you can't 130 00:12:50,629 --> 00:12:49,040 do anything but we were certainly uh 131 00:12:53,990 --> 00:12:50,639 surprised 132 00:12:56,710 --> 00:12:54,000 uh very quickly we realized that uh the 133 00:12:58,470 --> 00:12:56,720 tether had broke right at the shuttle so 134 00:13:00,629 --> 00:12:58,480 instead of coming back towards it was 135 00:13:03,269 --> 00:13:00,639 moving away from us and we and the 136 00:13:05,030 --> 00:13:03,279 shuttle were in no danger and uh and at 137 00:13:07,590 --> 00:13:05,040 that point 138 00:13:10,150 --> 00:13:07,600 it was uh of course it was a big shock 139 00:13:12,470 --> 00:13:10,160 and uh our responsibility then is to 140 00:13:14,870 --> 00:13:12,480 collect data and to try to photograph 141 00:13:16,550 --> 00:13:14,880 what's going on so that we can uh figure 142 00:13:18,629 --> 00:13:16,560 out after the mission what happened let 143 00:13:21,110 --> 00:13:18,639 me let me talk to umberto and mauricio a 144 00:13:23,509 --> 00:13:21,120 little bit about the tethered satellite 145 00:13:25,269 --> 00:13:23,519 what did you learn during the five hours 146 00:13:30,790 --> 00:13:25,279 that it operated before it broke away 147 00:13:36,389 --> 00:13:33,430 well i would say that we learn a lot 148 00:13:39,269 --> 00:13:36,399 about the electrode dynamic tether 149 00:13:41,030 --> 00:13:39,279 in fact we were able to generate power 150 00:13:44,710 --> 00:13:41,040 up to 151 00:13:48,069 --> 00:13:44,720 uh one kilowatt i would say so 152 00:13:50,550 --> 00:13:48,079 the experiment was running uh 153 00:13:51,829 --> 00:13:50,560 nominally and they were gathering a lot 154 00:13:54,389 --> 00:13:51,839 of data 155 00:13:56,470 --> 00:13:54,399 and i think that in fact even though the 156 00:13:58,150 --> 00:13:56,480 the debtor broke and we never got on 157 00:14:01,910 --> 00:13:58,160 station 158 00:14:04,949 --> 00:14:01,920 we had quite a good data to analyze uh 159 00:14:05,750 --> 00:14:04,959 for for a while and we we can surely 160 00:14:08,629 --> 00:14:05,760 uh 161 00:14:11,350 --> 00:14:08,639 assess much better the behavior of the 162 00:14:13,350 --> 00:14:11,360 of together at this eyeball that was 163 00:14:15,269 --> 00:14:13,360 never done before 164 00:14:17,350 --> 00:14:15,279 and i want to to 165 00:14:20,150 --> 00:14:17,360 to point at the fact that this kind of 166 00:14:22,790 --> 00:14:20,160 experiment is impossible to to do on 167 00:14:24,710 --> 00:14:22,800 earth so this is really the only the 168 00:14:42,230 --> 00:14:24,720 only place where you can do an 169 00:14:45,750 --> 00:14:43,910 is still working i think it's 170 00:14:47,829 --> 00:14:45,760 extraordinary despite all that it's been 171 00:14:49,750 --> 00:14:47,839 through it's still operating we have 172 00:14:50,870 --> 00:14:49,760 ground contact with it and i want to 173 00:14:53,829 --> 00:14:50,880 point out 174 00:14:55,269 --> 00:14:53,839 uh it's something which obviously we we 175 00:14:56,790 --> 00:14:55,279 would have preferred people not get a 176 00:14:58,550 --> 00:14:56,800 chance to see this but we have a 177 00:15:00,629 --> 00:14:58,560 satellite up there now with 20 178 00:15:03,189 --> 00:15:00,639 kilometers of tether on it 179 00:15:06,069 --> 00:15:03,199 and it will be visible from the ground 180 00:15:08,389 --> 00:15:06,079 uh it should be an absolutely awesome 181 00:15:09,430 --> 00:15:08,399 sight because the 20 kilometers of 182 00:15:11,590 --> 00:15:09,440 tether 183 00:15:12,550 --> 00:15:11,600 assuming that it's all strung out will 184 00:15:13,590 --> 00:15:12,560 be 185 00:15:15,509 --> 00:15:13,600 uh 186 00:15:18,870 --> 00:15:15,519 will be definitely visible to the naked 187 00:15:20,710 --> 00:15:18,880 eye and it will be the only time in most 188 00:15:22,949 --> 00:15:20,720 for most people that they'll ever be 189 00:15:24,550 --> 00:15:22,959 able to see something in earth orbit 190 00:15:26,550 --> 00:15:24,560 that's other than a point of light 191 00:15:27,829 --> 00:15:26,560 they'll actually see a line moving 192 00:15:29,990 --> 00:15:27,839 through the sky 193 00:15:32,629 --> 00:15:30,000 people in the southern united states so 194 00:15:33,590 --> 00:15:32,639 i hope newspapers and 195 00:15:36,550 --> 00:15:33,600 tv 196 00:15:38,629 --> 00:15:36,560 programs like yours will uh 197 00:15:41,509 --> 00:15:38,639 contact the the people who make the 198 00:15:43,110 --> 00:15:41,519 orbital predictions let people know 199 00:15:44,870 --> 00:15:43,120 all over the world when they're able to 200 00:15:47,030 --> 00:15:44,880 see the tethered satellite going over 201 00:15:48,550 --> 00:15:47,040 because it it will be an absolutely 202 00:15:50,389 --> 00:15:48,560 awesome sight 203 00:15:52,870 --> 00:15:50,399 in fact this is the largest man-made 204 00:16:02,310 --> 00:15:52,880 object that's ever been in space i guess 205 00:16:07,509 --> 00:16:04,949 all right i am um i've got a question uh 206 00:16:09,590 --> 00:16:07,519 from me for jeff what is the best thing 207 00:16:12,949 --> 00:16:09,600 that has happened to you on this mission 208 00:16:15,110 --> 00:16:13,829 i know there's been a lot of 209 00:16:19,350 --> 00:16:15,120 disappointments but i'm sure there's 210 00:16:22,949 --> 00:16:20,470 well 211 00:16:25,189 --> 00:16:22,959 we had taken the challenge of of getting 212 00:16:26,629 --> 00:16:25,199 this satellite deployed and i think all 213 00:16:28,150 --> 00:16:26,639 of us uh 214 00:16:30,550 --> 00:16:28,160 had this 215 00:16:32,949 --> 00:16:30,560 wonder about what was it gonna look like 216 00:16:35,670 --> 00:16:32,959 to see 20 kilometers of tether you know 217 00:16:39,030 --> 00:16:35,680 sometimes when i i'm driving uh home to 218 00:16:41,590 --> 00:16:39,040 work and i see a skyline of houston and 219 00:16:43,749 --> 00:16:41,600 it's about 13 miles away 220 00:16:45,509 --> 00:16:43,759 and uh and i think gosh that's a long 221 00:16:47,829 --> 00:16:45,519 way and we're actually gonna have a 222 00:16:50,949 --> 00:16:47,839 tether strung out 223 00:16:53,030 --> 00:16:50,959 shuttle and the satellite that's that's 224 00:16:55,670 --> 00:16:53,040 13 miles long 225 00:16:57,670 --> 00:16:55,680 it's it's just extraordinary and we've 226 00:17:00,949 --> 00:16:57,680 now actually seen that with with our 227 00:17:01,829 --> 00:17:00,959 eyes and and we've uh we've actually 228 00:17:04,069 --> 00:17:01,839 shown 229 00:17:06,789 --> 00:17:04,079 that all of our systems work to get it 230 00:17:07,909 --> 00:17:06,799 out there and i think i think we're very 231 00:17:09,829 --> 00:17:07,919 very 232 00:17:12,549 --> 00:17:09,839 happy that we were able to get that far 233 00:17:14,710 --> 00:17:12,559 obviously um we only 234 00:17:16,710 --> 00:17:14,720 succeeded in part of the journey we 235 00:17:17,909 --> 00:17:16,720 would have preferred to get to the end