1 00:00:06,789 --> 00:00:03,750 good afternoon and thanks for joining us 2 00:00:08,950 --> 00:00:06,799 for today's expedition 32 post spacewalk 3 00:00:10,709 --> 00:00:08,960 briefing with us today we have mike 4 00:00:12,709 --> 00:00:10,719 stefardini the international space 5 00:00:14,870 --> 00:00:12,719 station program manager 6 00:00:17,349 --> 00:00:14,880 ed van cise the flight director who is 7 00:00:19,750 --> 00:00:17,359 in charge of the eva today and keith 8 00:00:21,910 --> 00:00:19,760 johnson who was the lead eva officer for 9 00:00:23,189 --> 00:00:21,920 this spacewalk we'll start off with some 10 00:00:25,750 --> 00:00:23,199 statements with our participants and 11 00:00:27,670 --> 00:00:25,760 then we'll go to questions mike 12 00:00:29,269 --> 00:00:27,680 well good afternoon 13 00:00:31,029 --> 00:00:29,279 we'll spend a few moments with you today 14 00:00:33,670 --> 00:00:31,039 talking about our eva 15 00:00:35,670 --> 00:00:33,680 it was eva 18 that we had conducted 16 00:00:37,990 --> 00:00:35,680 today with the primary purpose 17 00:00:39,750 --> 00:00:38,000 to replace a main bus switching unit on 18 00:00:41,750 --> 00:00:39,760 board iss that 19 00:00:44,470 --> 00:00:41,760 that was supplying power to the iss but 20 00:00:46,709 --> 00:00:44,480 couldn't be commanded as you recall some 21 00:00:47,750 --> 00:00:46,719 months ago we uncovered this problem and 22 00:00:50,229 --> 00:00:47,760 have been 23 00:00:52,310 --> 00:00:50,239 living with it ever since 24 00:00:54,470 --> 00:00:52,320 again it was a relatively nominal 25 00:00:56,549 --> 00:00:54,480 configuration for us 26 00:00:58,150 --> 00:00:56,559 but we were unable to command it and 27 00:00:59,990 --> 00:00:58,160 there are very few situations where we 28 00:01:01,510 --> 00:01:00,000 need to do that on a regular basis and 29 00:01:03,750 --> 00:01:01,520 so we're able to wait 30 00:01:05,429 --> 00:01:03,760 uh until now to conduct the eba when we 31 00:01:06,630 --> 00:01:05,439 were ready and and had everything in 32 00:01:09,590 --> 00:01:06,640 place 33 00:01:11,429 --> 00:01:09,600 the team did a great job today this eva 34 00:01:12,789 --> 00:01:11,439 one of the longest in the history in our 35 00:01:16,710 --> 00:01:12,799 history and 36 00:01:22,469 --> 00:01:18,870 excuse me increment eva that we've 37 00:01:24,789 --> 00:01:22,479 conducted since the iss program began 38 00:01:27,030 --> 00:01:24,799 unfortunately today though we didn't we 39 00:01:29,350 --> 00:01:27,040 didn't complete all of our tasks uh we 40 00:01:30,710 --> 00:01:29,360 did we had we had three main tasks that 41 00:01:33,190 --> 00:01:30,720 we had planned and then one get ahead 42 00:01:35,990 --> 00:01:33,200 that was very important to us 43 00:01:38,550 --> 00:01:36,000 the mbsu of course was the primary uh 44 00:01:40,710 --> 00:01:38,560 job for the for the eva team but we also 45 00:01:42,950 --> 00:01:40,720 had some cables that had to be routed so 46 00:01:44,950 --> 00:01:42,960 we could supply power 47 00:01:46,870 --> 00:01:44,960 to a new russian module that's coming up 48 00:01:48,389 --> 00:01:46,880 in a year or so 49 00:01:50,389 --> 00:01:48,399 in addition that we had a boom camera on 50 00:01:52,630 --> 00:01:50,399 the ssrms that had failed that we had to 51 00:01:55,109 --> 00:01:52,640 replace and then if we had time we 52 00:01:57,270 --> 00:01:55,119 wanted to put a cover on the docking 53 00:01:59,749 --> 00:01:57,280 port that the shuttle used to use 54 00:02:02,230 --> 00:01:59,759 to keep it clear of debris until until 55 00:02:04,230 --> 00:02:02,240 we put the new docking system attached 56 00:02:05,910 --> 00:02:04,240 to the new docking system some years 57 00:02:08,710 --> 00:02:05,920 from now 58 00:02:10,389 --> 00:02:08,720 and as i said uh we didn't get all those 59 00:02:13,030 --> 00:02:10,399 tasks completed we did get the cables 60 00:02:15,430 --> 00:02:13,040 routed uh unfortunately in the process 61 00:02:17,990 --> 00:02:15,440 of trying to uh reinstall 62 00:02:18,949 --> 00:02:18,000 uh the new the spare mbsu we had some 63 00:02:21,510 --> 00:02:18,959 trouble 64 00:02:23,350 --> 00:02:21,520 um getting the bolts torqued down 65 00:02:25,030 --> 00:02:23,360 in the and ed and keith will talk more 66 00:02:28,550 --> 00:02:25,040 about that after this 67 00:02:31,670 --> 00:02:28,560 um but they did a did a uh 68 00:02:34,550 --> 00:02:31,680 a tremendous job ed and his team the the 69 00:02:38,070 --> 00:02:34,560 engineers and the crew a fantastic job 70 00:02:39,270 --> 00:02:38,080 of of working with with the uh the box 71 00:02:41,509 --> 00:02:39,280 and uh 72 00:02:42,869 --> 00:02:41,519 taking as many steps they could could 73 00:02:44,710 --> 00:02:42,879 come up with 74 00:02:47,350 --> 00:02:44,720 uh to try to get this thing reinstalled 75 00:02:49,990 --> 00:02:47,360 and ultimately we were not successful 76 00:02:51,990 --> 00:02:50,000 so in the end we left the mbsu in place 77 00:02:53,030 --> 00:02:52,000 it's partially torqued down but the 78 00:02:53,830 --> 00:02:53,040 power 79 00:02:55,670 --> 00:02:53,840 uh 80 00:02:56,949 --> 00:02:55,680 the power connections are not made so 81 00:02:59,270 --> 00:02:56,959 we're getting no power from that 82 00:03:01,110 --> 00:02:59,280 particular mbsu and then we've tied it 83 00:03:03,190 --> 00:03:01,120 down and in this position we're in a 84 00:03:05,110 --> 00:03:03,200 stable configuration the box is fine 85 00:03:07,190 --> 00:03:05,120 thermally it'll be okay 86 00:03:08,710 --> 00:03:07,200 and we'll uh we'll decide what to do 87 00:03:10,869 --> 00:03:08,720 next and 88 00:03:12,790 --> 00:03:10,879 and go take care of it here in the in 89 00:03:15,030 --> 00:03:12,800 the near future 90 00:03:16,869 --> 00:03:15,040 uh in the meantime the iss is being 91 00:03:19,750 --> 00:03:16,879 supplied power from six of its eight 92 00:03:23,030 --> 00:03:19,760 arrays the team installed some jumpers 93 00:03:25,670 --> 00:03:23,040 prior to uh powering down the mbsu 94 00:03:27,430 --> 00:03:25,680 in preparation for the for the eva and 95 00:03:29,750 --> 00:03:27,440 those jumpers allowed us to get all 96 00:03:32,229 --> 00:03:29,760 power to all the iss systems 97 00:03:34,390 --> 00:03:32,239 and payloads and and so really what the 98 00:03:36,070 --> 00:03:34,400 team has to do they have access we can 99 00:03:37,990 --> 00:03:36,080 get power to all the systems 100 00:03:39,589 --> 00:03:38,000 but we only have three quarters of the 101 00:03:41,830 --> 00:03:39,599 power available that we normally have 102 00:03:43,430 --> 00:03:41,840 from the iss and so 103 00:03:45,430 --> 00:03:43,440 depending on the task at hand over the 104 00:03:47,430 --> 00:03:45,440 next several days the team may have to 105 00:03:49,589 --> 00:03:47,440 manage power loads a little bit 106 00:03:51,509 --> 00:03:49,599 but this is familiar territory for the 107 00:03:52,949 --> 00:03:51,519 team and so we'll be able to to deal 108 00:03:54,550 --> 00:03:52,959 with that while we 109 00:03:56,710 --> 00:03:54,560 decide what our next 110 00:03:58,149 --> 00:03:56,720 next plan is 111 00:04:00,229 --> 00:03:58,159 we do have uh 112 00:04:01,030 --> 00:04:00,239 a number uh of 113 00:04:10,630 --> 00:04:01,040 a 114 00:04:14,390 --> 00:04:10,640 coming home 115 00:04:17,030 --> 00:04:14,400 on the 16th of september local time 116 00:04:19,509 --> 00:04:17,040 and and then we have an atv departure on 117 00:04:21,270 --> 00:04:19,519 the 25th of september and so 118 00:04:23,189 --> 00:04:21,280 while we think about our plan and when 119 00:04:24,870 --> 00:04:23,199 we might do another eba if we decide 120 00:04:26,390 --> 00:04:24,880 that's necessary we'll have to take all 121 00:04:27,670 --> 00:04:26,400 that into account 122 00:04:28,950 --> 00:04:27,680 move things around in order to 123 00:04:31,590 --> 00:04:28,960 accommodate that 124 00:04:33,990 --> 00:04:31,600 uh but if we do decide to do an eva i 125 00:04:36,390 --> 00:04:34,000 think you'll see us uh if we can can 126 00:04:39,110 --> 00:04:36,400 determine what uh what we can do to get 127 00:04:40,710 --> 00:04:39,120 the mbsu ultimately installed you'll 128 00:04:42,790 --> 00:04:40,720 hear us talking about perhaps trying to 129 00:04:45,110 --> 00:04:42,800 do that sooner rather than later 130 00:04:46,150 --> 00:04:45,120 uh in the in the program 131 00:04:49,189 --> 00:04:46,160 uh so 132 00:04:51,110 --> 00:04:49,199 uh for for the team first the fantastic 133 00:04:53,749 --> 00:04:51,120 job they did a great job the vehicle is 134 00:04:56,230 --> 00:04:53,759 in a in a good configuration uh we know 135 00:04:58,710 --> 00:04:56,240 how to operate uh with without power 136 00:05:00,469 --> 00:04:58,720 from uh from two of the eight arrays 137 00:05:02,950 --> 00:05:00,479 but we do have power to all the critical 138 00:05:05,350 --> 00:05:02,960 systems and so uh as always the team 139 00:05:07,830 --> 00:05:05,360 will sort this out uh decide the 140 00:05:11,029 --> 00:05:07,840 appropriate plan of action and we'll go 141 00:05:12,469 --> 00:05:11,039 out and take care of this in due time 142 00:05:14,390 --> 00:05:12,479 uh and with that i'll hand you over to 143 00:05:17,430 --> 00:05:14,400 ed who will uh talk to you more about 144 00:05:20,310 --> 00:05:17,440 the specifics of the eva 145 00:05:22,070 --> 00:05:20,320 well thank you mr suffradini and uh i i 146 00:05:25,510 --> 00:05:22,080 need to really start off uh by 147 00:05:27,830 --> 00:05:25,520 reiterating the the thanks and 148 00:05:30,629 --> 00:05:27,840 excellence that our team 149 00:05:31,670 --> 00:05:30,639 across the board showed today 150 00:05:32,790 --> 00:05:31,680 we train 151 00:05:34,950 --> 00:05:32,800 frequently 152 00:05:37,510 --> 00:05:34,960 not only in mission operations but in 153 00:05:40,310 --> 00:05:37,520 all of our different areas on handling 154 00:05:42,150 --> 00:05:40,320 malfunctions as they come up and as even 155 00:05:43,749 --> 00:05:42,160 though we didn't necessarily train for 156 00:05:46,070 --> 00:05:43,759 this particular situation it's the 157 00:05:48,230 --> 00:05:46,080 mentality that we have grown up with and 158 00:05:50,629 --> 00:05:48,240 that we demonstrate on console that gave 159 00:05:53,029 --> 00:05:50,639 us all the tools we needed to first try 160 00:05:54,070 --> 00:05:53,039 to troubleshoot the bolt issues that we 161 00:05:56,390 --> 00:05:54,080 saw 162 00:05:58,150 --> 00:05:56,400 and obviously we tried everything that 163 00:06:00,309 --> 00:05:58,160 we could come up with 164 00:06:01,909 --> 00:06:00,319 jointly within the ops team and also 165 00:06:03,590 --> 00:06:01,919 with all the engineering 166 00:06:04,870 --> 00:06:03,600 community working to try to resolve the 167 00:06:07,350 --> 00:06:04,880 issue 168 00:06:09,590 --> 00:06:07,360 but was also as was also mentioned uh we 169 00:06:11,909 --> 00:06:09,600 have an ops team that is uh well 170 00:06:14,710 --> 00:06:11,919 equipped to handle uh long-term off 171 00:06:16,629 --> 00:06:14,720 nominal situations if it has to uh if we 172 00:06:18,790 --> 00:06:16,639 don't have all uh eight power channels 173 00:06:20,950 --> 00:06:18,800 we know how to work with those resources 174 00:06:22,710 --> 00:06:20,960 and as was mentioned we're really not in 175 00:06:24,309 --> 00:06:22,720 a posture that the redundancy is 176 00:06:26,629 --> 00:06:24,319 compromised onboard the vehicle but just 177 00:06:29,110 --> 00:06:26,639 a matter of which facilities and which 178 00:06:30,390 --> 00:06:29,120 operations we want to do at a given time 179 00:06:32,629 --> 00:06:30,400 with the amount of power that we have 180 00:06:33,990 --> 00:06:32,639 available so while it's not ideal that 181 00:06:35,590 --> 00:06:34,000 the situation that we're in right now 182 00:06:37,270 --> 00:06:35,600 it's certainly not one 183 00:06:39,430 --> 00:06:37,280 that leaves us 184 00:06:41,189 --> 00:06:39,440 in a off situation that we can't keep 185 00:06:43,749 --> 00:06:41,199 moving forward 186 00:06:46,070 --> 00:06:43,759 as far as the eva itself we got the crew 187 00:06:49,270 --> 00:06:46,080 up right on time they went through their 188 00:06:51,749 --> 00:06:49,280 eva preparations without any issues we 189 00:06:53,350 --> 00:06:51,759 got out the door also right on time at 7 190 00:06:55,350 --> 00:06:53,360 15 local 191 00:06:57,510 --> 00:06:55,360 and didn't work any suit issues 192 00:06:59,830 --> 00:06:57,520 throughout the day and 193 00:07:01,510 --> 00:06:59,840 we were also 194 00:07:03,029 --> 00:07:01,520 successful in getting the the cables 195 00:07:05,270 --> 00:07:03,039 routed and that was one that we also 196 00:07:07,510 --> 00:07:05,280 needed to track pretty closely 197 00:07:10,390 --> 00:07:07,520 obviously we ran into issues with the 198 00:07:12,070 --> 00:07:10,400 the bolts themselves on the mbsu 199 00:07:13,350 --> 00:07:12,080 and that took most of our attention 200 00:07:15,510 --> 00:07:13,360 throughout the 201 00:07:16,790 --> 00:07:15,520 rest of the eva we did get the failed 202 00:07:18,550 --> 00:07:16,800 box though 203 00:07:20,790 --> 00:07:18,560 installed on its 204 00:07:22,230 --> 00:07:20,800 stowage platform behind the airlock and 205 00:07:24,309 --> 00:07:22,240 got that covered back up with its 206 00:07:26,309 --> 00:07:24,319 thermal blankets so we have that piece 207 00:07:27,909 --> 00:07:26,319 of hardware fully secured 208 00:07:29,670 --> 00:07:27,919 which only leaves us with one problem to 209 00:07:31,990 --> 00:07:29,680 go finish resolving and that's the the 210 00:07:34,309 --> 00:07:32,000 box that's sitting out on the s0 truss 211 00:07:36,070 --> 00:07:34,319 not fully installed yet but 212 00:07:37,110 --> 00:07:36,080 the team did a great job at the end as 213 00:07:39,350 --> 00:07:37,120 well 214 00:07:41,589 --> 00:07:39,360 in eva obviously this long not only 215 00:07:43,430 --> 00:07:41,599 takes its toll on on the crew and having 216 00:07:44,869 --> 00:07:43,440 to work 217 00:07:47,670 --> 00:07:44,879 the length of the day that they had to 218 00:07:49,270 --> 00:07:47,680 but also the the integrated team and 219 00:07:51,270 --> 00:07:49,280 i never saw anything that would give me 220 00:07:53,990 --> 00:07:51,280 any indications that i had to worry 221 00:07:55,749 --> 00:07:54,000 about their capabilities or fatigue 222 00:07:58,150 --> 00:07:55,759 they did an exceptional job we got the 223 00:07:59,990 --> 00:07:58,160 crew back inside safely we absolutely 224 00:08:01,909 --> 00:08:00,000 know our configuration that we're in and 225 00:08:04,230 --> 00:08:01,919 the teams are already talking about how 226 00:08:06,390 --> 00:08:04,240 we might go resolve the issue 227 00:08:08,230 --> 00:08:06,400 and get things squared away on board to 228 00:08:10,070 --> 00:08:08,240 support all the operations that 229 00:08:10,950 --> 00:08:10,080 mr suffredini mentioned and get us back 230 00:08:14,790 --> 00:08:10,960 to 231 00:08:16,629 --> 00:08:14,800 that we have on orbit 232 00:08:18,150 --> 00:08:16,639 as far as the operations go 233 00:08:19,430 --> 00:08:18,160 that was pretty much the highlights of 234 00:08:20,869 --> 00:08:19,440 our day and keith i don't know if you 235 00:08:22,469 --> 00:08:20,879 have anything else to add about the volt 236 00:08:25,510 --> 00:08:22,479 failures that we saw 237 00:08:27,350 --> 00:08:25,520 thank you mr van size 238 00:08:29,270 --> 00:08:27,360 let's see so uh first of all we were 239 00:08:31,350 --> 00:08:29,280 fortunate that the crew uh used the 240 00:08:33,509 --> 00:08:31,360 in-suit light exercise pre-breathe 241 00:08:35,990 --> 00:08:33,519 protocol this morning they uh they got 242 00:08:38,149 --> 00:08:36,000 out the door as had mentioned in a 243 00:08:39,430 --> 00:08:38,159 timely fashion and also we were able to 244 00:08:40,790 --> 00:08:39,440 change out 245 00:08:43,350 --> 00:08:40,800 their 246 00:08:44,949 --> 00:08:43,360 contamination control cartridge which uh 247 00:08:47,350 --> 00:08:44,959 provides them the co2 scrubbing 248 00:08:49,590 --> 00:08:47,360 capability and we installed new ones 249 00:08:50,790 --> 00:08:49,600 with 40 minutes of pre-breathe left 250 00:08:52,710 --> 00:08:50,800 and that allowed us to have the 251 00:08:55,750 --> 00:08:52,720 extension time available to do the 252 00:08:57,829 --> 00:08:55,760 troubleshooting that ed mentioned 253 00:09:00,389 --> 00:08:57,839 during the eva we did have one suit 254 00:09:02,949 --> 00:09:00,399 issue that we began tracking towards the 255 00:09:04,550 --> 00:09:02,959 end of the eva where aki's temperature 256 00:09:05,350 --> 00:09:04,560 started rising 257 00:09:09,030 --> 00:09:05,360 it 258 00:09:10,550 --> 00:09:09,040 the cooling he needed but we'll have to 259 00:09:12,389 --> 00:09:10,560 look at that suit 260 00:09:14,310 --> 00:09:12,399 afterwards to determine if it's go for 261 00:09:17,030 --> 00:09:14,320 eva again 262 00:09:18,870 --> 00:09:17,040 during the eva the the bolt issue that 263 00:09:20,710 --> 00:09:18,880 we've been talking about i brought some 264 00:09:22,949 --> 00:09:20,720 hardware along with me 265 00:09:23,910 --> 00:09:22,959 off to my side over here 266 00:09:27,030 --> 00:09:23,920 this is 267 00:09:28,230 --> 00:09:27,040 what we call a stanchion bolt uh the h2 268 00:09:35,269 --> 00:09:28,240 bolt 269 00:09:37,590 --> 00:09:35,279 here drives 270 00:09:39,350 --> 00:09:37,600 the the box down into the configuration 271 00:09:41,829 --> 00:09:39,360 that it needs to go in 272 00:09:44,710 --> 00:09:41,839 on our first attempt we drove the bolt 273 00:09:45,670 --> 00:09:44,720 quite a few turns but not the sufficient 274 00:09:47,190 --> 00:09:45,680 number 275 00:09:49,269 --> 00:09:47,200 to get it all the way seated and the 276 00:09:50,710 --> 00:09:49,279 electrical connectors made it and as 277 00:09:53,670 --> 00:09:50,720 part of our troubleshooting we backed 278 00:09:55,670 --> 00:09:53,680 the box back out again um and tried to 279 00:09:58,630 --> 00:09:55,680 inspect it and during the inspection we 280 00:10:00,310 --> 00:09:58,640 noted that uh there was some fragments 281 00:10:01,670 --> 00:10:00,320 inside of 282 00:10:03,190 --> 00:10:01,680 the the 283 00:10:05,750 --> 00:10:03,200 the housing itself 284 00:10:07,110 --> 00:10:05,760 and we decided that it probably was 285 00:10:09,190 --> 00:10:07,120 prudent to clean 286 00:10:12,310 --> 00:10:09,200 the work site out so we went back to the 287 00:10:14,389 --> 00:10:12,320 airlock and retrieved a pair of pliers 288 00:10:16,150 --> 00:10:14,399 that's we went back for a different 289 00:10:18,150 --> 00:10:16,160 socket and found that it wasn't in the 290 00:10:20,550 --> 00:10:18,160 airlock as we expected and we're gonna 291 00:10:23,030 --> 00:10:20,560 have to do a team to go look and find 292 00:10:24,550 --> 00:10:23,040 out where that particular socket is 293 00:10:26,870 --> 00:10:24,560 we did find a pair of pliers we brought 294 00:10:28,949 --> 00:10:26,880 it with us to the work site and used 295 00:10:31,110 --> 00:10:28,959 that to to dab around and we found that 296 00:10:34,150 --> 00:10:31,120 some material came out of 297 00:10:35,910 --> 00:10:34,160 the socket when when we did that test 298 00:10:38,710 --> 00:10:35,920 and we tried to drive the bolt again 299 00:10:40,389 --> 00:10:38,720 with no success fewer turns this time 300 00:10:42,069 --> 00:10:40,399 when we backed it out we retrieved 301 00:10:44,069 --> 00:10:42,079 what's called a connector cleaner tool 302 00:10:46,630 --> 00:10:44,079 and i have a picture of that 303 00:10:48,150 --> 00:10:46,640 this is a gas canister that holds 304 00:10:49,670 --> 00:10:48,160 nitrogen 305 00:10:52,389 --> 00:10:49,680 i don't have the exact pressure that 306 00:10:55,910 --> 00:10:52,399 it's in there but it gives us about 10 307 00:10:58,230 --> 00:10:55,920 seconds worth of a burst of gas 308 00:11:01,430 --> 00:10:58,240 sonny williams injected that down into 309 00:11:03,030 --> 00:11:01,440 the receptacle on the socket and 310 00:11:05,269 --> 00:11:03,040 depressed the 311 00:11:08,310 --> 00:11:05,279 handle and it 312 00:11:09,990 --> 00:11:08,320 sprayed nitrogen gas down she noted that 313 00:11:10,790 --> 00:11:10,000 more material came out of it at that 314 00:11:12,470 --> 00:11:10,800 point 315 00:11:15,750 --> 00:11:12,480 we then decided that it probably was 316 00:11:16,710 --> 00:11:15,760 prudent to spray the bolt on the mbsu 317 00:11:18,949 --> 00:11:16,720 itself 318 00:11:21,750 --> 00:11:18,959 and again when we did that i'm at the 319 00:11:27,509 --> 00:11:25,110 that's the volt down at this end 320 00:11:28,710 --> 00:11:27,519 when we when we sprayed more material 321 00:11:30,790 --> 00:11:28,720 came out 322 00:11:32,150 --> 00:11:30,800 back at this end 323 00:11:34,949 --> 00:11:32,160 this is um 324 00:11:36,389 --> 00:11:34,959 the the bolt that the crew members drive 325 00:11:39,269 --> 00:11:36,399 we attached what's called a torque 326 00:11:41,269 --> 00:11:39,279 multiplier on this particular interface 327 00:11:43,670 --> 00:11:41,279 and that increases 328 00:11:46,389 --> 00:11:43,680 the torque that goes into the bolt that 329 00:11:49,110 --> 00:11:46,399 the pistol grip tool can supply 330 00:11:51,110 --> 00:11:49,120 when that happens there's an indicator 331 00:11:52,949 --> 00:11:51,120 it's located over here 332 00:11:55,990 --> 00:11:52,959 that shows us the locked and unlocked 333 00:11:56,790 --> 00:11:56,000 configuration for that particular bolt 334 00:11:59,030 --> 00:11:56,800 so 335 00:12:01,110 --> 00:11:59,040 the troubleshooting that ed mentioned we 336 00:12:04,790 --> 00:12:01,120 tried this several times our last 337 00:12:06,629 --> 00:12:04,800 attempt it became bound and we just 338 00:12:08,150 --> 00:12:06,639 at that point decided the best approach 339 00:12:09,750 --> 00:12:08,160 was to leave it where it is do 340 00:12:11,910 --> 00:12:09,760 additional troubleshooting on the ground 341 00:12:14,310 --> 00:12:11,920 and come up with a workaround plan 342 00:12:16,150 --> 00:12:14,320 that mr suffradini mentioned and 343 00:12:18,389 --> 00:12:16,160 will put in place and try here in the 344 00:12:20,069 --> 00:12:18,399 near future or determine if there's a 345 00:12:22,710 --> 00:12:20,079 better course of action 346 00:12:24,870 --> 00:12:22,720 so that's all i have 347 00:12:26,629 --> 00:12:24,880 okay with that uh we'll start our 348 00:12:27,910 --> 00:12:26,639 questions we'll start here in houston 349 00:12:33,350 --> 00:12:27,920 mark 350 00:12:35,430 --> 00:12:33,360 week um i have a couple questions 351 00:12:37,590 --> 00:12:35,440 and i just want to be clear on how the 352 00:12:40,790 --> 00:12:37,600 box is now fastened to the station and 353 00:12:42,949 --> 00:12:40,800 if i understand it right one bolt 354 00:12:45,110 --> 00:12:42,959 is holding it to the station and then 355 00:12:47,990 --> 00:12:45,120 it's lashed with a tether to the hand 356 00:12:51,030 --> 00:12:48,000 rail so it's secured that way does that 357 00:12:55,910 --> 00:12:52,790 we come up with a plan 358 00:12:57,590 --> 00:12:55,920 pre eva where conditions like this if 359 00:13:01,190 --> 00:12:57,600 they arise we come up with a safe 360 00:13:02,150 --> 00:13:01,200 configuration that restrains the bolt 361 00:13:03,670 --> 00:13:02,160 with a 362 00:13:06,150 --> 00:13:03,680 tether and what we have is a long 363 00:13:09,030 --> 00:13:06,160 duration tie-down tether it's designed 364 00:13:11,350 --> 00:13:09,040 specifically to hold the the box in 365 00:13:13,430 --> 00:13:11,360 place for long duration and we have a 366 00:13:16,150 --> 00:13:13,440 tether point on the box itself and the 367 00:13:18,629 --> 00:13:16,160 tether point down on station and we do 368 00:13:21,350 --> 00:13:18,639 this for all the boxes that we intend to 369 00:13:23,590 --> 00:13:21,360 uh to remove and replace we come up with 370 00:13:25,509 --> 00:13:23,600 a method of doing this 371 00:13:27,430 --> 00:13:25,519 it just so happens that the bolt is now 372 00:13:29,030 --> 00:13:27,440 partially driven in so that's additional 373 00:13:30,870 --> 00:13:29,040 restraint 374 00:13:36,310 --> 00:13:30,880 but it is not the the correct 375 00:13:38,790 --> 00:13:37,190 so 376 00:13:41,189 --> 00:13:38,800 could you talk about 377 00:13:42,790 --> 00:13:41,199 what's affected in a power sense when 378 00:13:44,949 --> 00:13:42,800 you're in 379 00:13:47,269 --> 00:13:44,959 when you have three main bus switching 380 00:13:49,269 --> 00:13:47,279 units what some of the trade-offs are 381 00:13:51,430 --> 00:13:49,279 that you might be 382 00:13:53,670 --> 00:13:51,440 working in the next day or so in terms 383 00:13:56,150 --> 00:13:53,680 of providing power and you know whether 384 00:13:58,230 --> 00:13:56,160 it influences communications or life 385 00:14:00,949 --> 00:13:58,240 support or research or just you know 386 00:14:02,870 --> 00:14:00,959 what you have to sort of sort through to 387 00:14:04,389 --> 00:14:02,880 to take care of the priorities 388 00:14:06,470 --> 00:14:04,399 absolutely 389 00:14:07,990 --> 00:14:06,480 i guess just to provide the 390 00:14:10,230 --> 00:14:08,000 the 391 00:14:12,629 --> 00:14:10,240 clarification so we have 392 00:14:14,310 --> 00:14:12,639 power to the subsystems of the space 393 00:14:15,910 --> 00:14:14,320 station from six of our arrays but all 394 00:14:17,990 --> 00:14:15,920 eight of the arrays are of course still 395 00:14:19,910 --> 00:14:18,000 operating and still fully functional 396 00:14:21,430 --> 00:14:19,920 the two arrays that we're not pulling 397 00:14:24,150 --> 00:14:21,440 power from there 398 00:14:25,509 --> 00:14:24,160 one a and one b are what we call them 399 00:14:27,509 --> 00:14:25,519 they are still charging their own 400 00:14:29,269 --> 00:14:27,519 batteries and there are systems out 401 00:14:31,110 --> 00:14:29,279 associated with those solar arrays that 402 00:14:32,710 --> 00:14:31,120 still need maintenance and 403 00:14:34,629 --> 00:14:32,720 those arrays are still providing the 404 00:14:36,069 --> 00:14:34,639 power to do that 405 00:14:37,269 --> 00:14:36,079 so just to clarify that if there was 406 00:14:39,829 --> 00:14:37,279 question there 407 00:14:41,990 --> 00:14:39,839 with the subsystems inside and outside 408 00:14:44,470 --> 00:14:42,000 the vehicle that are not related to 409 00:14:46,069 --> 00:14:44,480 their own solar arrays we are down to 410 00:14:47,030 --> 00:14:46,079 six power channels to provide all that 411 00:14:48,470 --> 00:14:47,040 power 412 00:14:50,629 --> 00:14:48,480 and 413 00:14:53,430 --> 00:14:50,639 we have flight rules in place that give 414 00:14:55,829 --> 00:14:53,440 us a maximum loading of kilowatts per 415 00:14:57,509 --> 00:14:55,839 channel and that's what we work to 416 00:14:58,790 --> 00:14:57,519 balance across the channels that we have 417 00:15:00,310 --> 00:14:58,800 available 418 00:15:03,509 --> 00:15:00,320 the 419 00:15:06,470 --> 00:15:03,519 assembled and operational it actually 420 00:15:08,629 --> 00:15:06,480 has a lot of flexibility to route power 421 00:15:11,509 --> 00:15:08,639 around through different means 422 00:15:14,790 --> 00:15:11,519 so we can be creative with how we 423 00:15:17,189 --> 00:15:14,800 share we call it share ratios but how we 424 00:15:19,509 --> 00:15:17,199 share power across the power channels to 425 00:15:22,069 --> 00:15:19,519 be able to provide as 426 00:15:23,990 --> 00:15:22,079 much balance as we can across them 427 00:15:26,310 --> 00:15:24,000 but that said there are some things that 428 00:15:29,030 --> 00:15:26,320 do require more power are only connected 429 00:15:30,310 --> 00:15:29,040 to certain power feeds so for example 430 00:15:35,749 --> 00:15:30,320 the 431 00:15:37,670 --> 00:15:35,759 when it's in use does draw power and so 432 00:15:38,949 --> 00:15:37,680 one of the things that we have the if we 433 00:15:40,230 --> 00:15:38,959 haven't done it already we'll be doing 434 00:15:41,030 --> 00:15:40,240 tonight before they go to bed as they 435 00:15:42,949 --> 00:15:41,040 will 436 00:15:45,509 --> 00:15:42,959 disconnect the robotics workstation in 437 00:15:47,430 --> 00:15:45,519 the u.s lab so that that piece is not 438 00:15:48,949 --> 00:15:47,440 drawing power off of 439 00:15:51,590 --> 00:15:48,959 the power channels that are highly 440 00:15:53,110 --> 00:15:51,600 loaded so we take actions like that to 441 00:15:54,790 --> 00:15:53,120 turn off equipment that aren't 442 00:15:55,509 --> 00:15:54,800 necessarily required 443 00:16:00,310 --> 00:15:55,519 to 444 00:16:03,509 --> 00:16:00,320 other places another tactic that we'll 445 00:16:05,829 --> 00:16:03,519 use is we normally have shell heaters 446 00:16:08,550 --> 00:16:05,839 for all the different modules 447 00:16:10,389 --> 00:16:08,560 on such that they can turn on themselves 448 00:16:11,749 --> 00:16:10,399 if needed so they just run on their own 449 00:16:13,670 --> 00:16:11,759 thermostats 450 00:16:15,350 --> 00:16:13,680 we might instead go to a manual shell 451 00:16:17,189 --> 00:16:15,360 heater operation to where we are 452 00:16:19,829 --> 00:16:17,199 selective on which shell heaters turn on 453 00:16:22,470 --> 00:16:19,839 so that they come on using the correct 454 00:16:23,910 --> 00:16:22,480 power channel but it's really 455 00:16:25,350 --> 00:16:23,920 on a bigger scale 456 00:16:28,550 --> 00:16:25,360 we're just balancing the loads across 457 00:16:30,790 --> 00:16:28,560 the six channels that we have without 458 00:16:32,310 --> 00:16:30,800 minimizing or reducing our operational 459 00:16:34,550 --> 00:16:32,320 redundancy we need to actually go fly 460 00:16:35,670 --> 00:16:34,560 the vehicle you also mentioned payloads 461 00:16:36,790 --> 00:16:35,680 and that is going to be something we're 462 00:16:38,150 --> 00:16:36,800 going to have to look at obviously we 463 00:16:39,910 --> 00:16:38,160 want to keep doing that world-class 464 00:16:41,990 --> 00:16:39,920 science that we do 465 00:16:43,829 --> 00:16:42,000 we just have to be smart on which 466 00:16:45,910 --> 00:16:43,839 facilities we have up at a given time so 467 00:16:52,870 --> 00:16:45,920 we don't have two facilities that use a 468 00:16:57,189 --> 00:16:54,389 okay we'll go to our phone bridge 469 00:16:59,110 --> 00:16:57,199 questions uh we'll start with marcia at 470 00:17:01,749 --> 00:16:59,120 the associated press 471 00:17:04,549 --> 00:17:01,759 yes hi um i'm wondering what's the 472 00:17:05,590 --> 00:17:04,559 earliest you think a spacewalk might be 473 00:17:07,990 --> 00:17:05,600 held 474 00:17:09,590 --> 00:17:08,000 and i'm wondering if if if any of the 475 00:17:11,510 --> 00:17:09,600 three of you would you characterize this 476 00:17:19,429 --> 00:17:11,520 as an urgent situation that needs to be 477 00:17:22,710 --> 00:17:21,029 okay i'll do it 478 00:17:24,630 --> 00:17:22,720 uh let's see 479 00:17:27,189 --> 00:17:24,640 um there's an advantage to going 480 00:17:29,590 --> 00:17:27,199 outdoors uh here in the next little 481 00:17:32,230 --> 00:17:29,600 while while joe acaba is still on orbit 482 00:17:34,470 --> 00:17:32,240 for us because he's the arm operator and 483 00:17:36,230 --> 00:17:34,480 the the teams 484 00:17:37,990 --> 00:17:36,240 got all the experience they have now 485 00:17:41,270 --> 00:17:38,000 with having worked on the 486 00:17:43,590 --> 00:17:41,280 on the mbsu and so the urgency really is 487 00:17:46,390 --> 00:17:43,600 not about the configuration of the iss 488 00:17:49,110 --> 00:17:46,400 or the or the condition the mbsu is in 489 00:17:51,190 --> 00:17:49,120 it really is um if we wait too long we 490 00:17:54,470 --> 00:17:51,200 have to do retesting of the emu's we 491 00:17:56,870 --> 00:17:54,480 have to do some uh checks of of the 492 00:18:00,390 --> 00:17:56,880 different systems that support the eba 493 00:18:03,350 --> 00:18:00,400 so if we can if we can figure out a plan 494 00:18:05,830 --> 00:18:03,360 that requires us to go eva to go uh 495 00:18:07,909 --> 00:18:05,840 solve this problem in the near future 496 00:18:09,830 --> 00:18:07,919 the advantage to us is saving crew time 497 00:18:11,430 --> 00:18:09,840 and getting ready to go outside and the 498 00:18:13,510 --> 00:18:11,440 crew's immediate experience having 499 00:18:15,430 --> 00:18:13,520 already dealt with this for some time 500 00:18:17,830 --> 00:18:15,440 but from a system perspective we're 501 00:18:19,750 --> 00:18:17,840 stable and in good shape we actually 502 00:18:22,870 --> 00:18:19,760 with this reconfiguration we actually do 503 00:18:27,029 --> 00:18:22,880 even get some redundancy back 504 00:18:28,870 --> 00:18:27,039 and so i would tell you uh this is not a 505 00:18:30,390 --> 00:18:28,880 a configuration want to stand for a long 506 00:18:32,549 --> 00:18:30,400 period of time but 507 00:18:35,190 --> 00:18:32,559 but even in this configuration we're 508 00:18:36,470 --> 00:18:35,200 we're robust to uh to many failures 509 00:18:38,789 --> 00:18:36,480 still 510 00:18:41,190 --> 00:18:38,799 and so in that respect we're not rushing 511 00:18:42,710 --> 00:18:41,200 out the door to try to hurry up and fix 512 00:18:44,150 --> 00:18:42,720 it we're really trying to take advantage 513 00:18:45,909 --> 00:18:44,160 of our experience and the crew that's on 514 00:18:49,270 --> 00:18:45,919 board today 515 00:18:51,830 --> 00:18:49,280 also with the flights coming up 516 00:18:55,110 --> 00:18:51,840 the htv departure and then 517 00:18:56,950 --> 00:18:55,120 ultimately with the soyuz departure 518 00:18:58,870 --> 00:18:56,960 these of course are critical operations 519 00:19:00,150 --> 00:18:58,880 and so we'll have to look if we want to 520 00:19:01,669 --> 00:19:00,160 try to do this 521 00:19:04,070 --> 00:19:01,679 sooner rather than later then we'll have 522 00:19:06,310 --> 00:19:04,080 to look at those two operations 523 00:19:08,150 --> 00:19:06,320 um the hdb from the standpoint of do we 524 00:19:09,830 --> 00:19:08,160 have to do it right now or can we maybe 525 00:19:11,029 --> 00:19:09,840 delay it a little bit until after joe 526 00:19:12,870 --> 00:19:11,039 leaves 527 00:19:15,270 --> 00:19:12,880 in order to to get that 528 00:19:16,470 --> 00:19:15,280 that work done now we we're we're not 529 00:19:18,390 --> 00:19:16,480 entertaining 530 00:19:19,669 --> 00:19:18,400 uh asking the crew to stay on orbit 531 00:19:20,789 --> 00:19:19,679 longer 532 00:19:22,390 --> 00:19:20,799 and so 533 00:19:24,150 --> 00:19:22,400 using that as sort of a constraint we're 534 00:19:25,990 --> 00:19:24,160 just trying to see if we can figure out 535 00:19:28,710 --> 00:19:26,000 a plan of attack 536 00:19:30,789 --> 00:19:28,720 if we can can get it done before for 537 00:19:32,310 --> 00:19:30,799 before joe departs and while the systems 538 00:19:34,390 --> 00:19:32,320 are still configured 539 00:19:37,350 --> 00:19:34,400 for the eva to minimize the impact in 540 00:19:39,830 --> 00:19:37,360 crude time to research 541 00:19:41,830 --> 00:19:39,840 thank you and and is what is your in 542 00:19:43,510 --> 00:19:41,840 your mind right now subject to change of 543 00:19:45,430 --> 00:19:43,520 course what is the earliest you could 544 00:19:47,990 --> 00:19:45,440 expect to go out would it be labor day 545 00:19:51,270 --> 00:19:48,000 monday tuesday wednesday do you have any 546 00:19:53,590 --> 00:19:51,280 clue s21 might be the earliest 547 00:19:55,110 --> 00:19:53,600 i would i don't know the answer to that 548 00:19:56,150 --> 00:19:55,120 uh of course we got to get the crew 549 00:19:57,430 --> 00:19:56,160 rested 550 00:19:58,470 --> 00:19:57,440 uh and we got to figure out what we're 551 00:20:00,230 --> 00:19:58,480 going to do and that's probably the 552 00:20:01,750 --> 00:20:00,240 biggest thing we need to 553 00:20:03,029 --> 00:20:01,760 you know the teams have been working all 554 00:20:04,630 --> 00:20:03,039 day today to try to get this thing 555 00:20:06,549 --> 00:20:04,640 installed and so now they're going to 556 00:20:09,190 --> 00:20:06,559 they're going to step back and and we'll 557 00:20:09,990 --> 00:20:09,200 have to go get the uh qual unit of the 558 00:20:11,990 --> 00:20:10,000 um 559 00:20:13,909 --> 00:20:12,000 of the heat exchanger which has the post 560 00:20:16,070 --> 00:20:13,919 on that keith showed you we'll go get 561 00:20:17,669 --> 00:20:16,080 the qual unit for the mbsu we'll take 562 00:20:19,350 --> 00:20:17,679 those out and probably building nine 563 00:20:21,029 --> 00:20:19,360 somewhere and we'll we'll try to look at 564 00:20:22,549 --> 00:20:21,039 what our options are and what we can do 565 00:20:25,110 --> 00:20:22,559 we'll have to look at 566 00:20:27,590 --> 00:20:25,120 the build paper for the s0 to see if we 567 00:20:29,669 --> 00:20:27,600 had anything happen during the assembly 568 00:20:30,789 --> 00:20:29,679 that would help help us understand what 569 00:20:33,190 --> 00:20:30,799 we're dealing with we have to look at 570 00:20:34,789 --> 00:20:33,200 other techniques so i would i would tell 571 00:20:37,270 --> 00:20:34,799 you marsha the long pole in the tent 572 00:20:40,950 --> 00:20:37,280 really for us is going to be can we can 573 00:20:42,789 --> 00:20:40,960 we figure out things that we could uh do 574 00:20:45,110 --> 00:20:42,799 to try to recover this 575 00:20:47,430 --> 00:20:45,120 uh and and by the time we've done that 576 00:20:48,950 --> 00:20:47,440 we've talked about it we've generated 577 00:20:50,870 --> 00:20:48,960 procedures we've 578 00:20:52,789 --> 00:20:50,880 um you know run through those procedures 579 00:20:55,110 --> 00:20:52,799 together and potted those procedures i 580 00:20:57,350 --> 00:20:55,120 think that will be the driving force 581 00:20:59,590 --> 00:20:57,360 uh and and by that time the crew will be 582 00:21:02,390 --> 00:20:59,600 rested and will have a plan in place so 583 00:21:05,270 --> 00:21:02,400 i i would think that if 584 00:21:07,830 --> 00:21:05,280 if we can we try to get out outdoors 585 00:21:09,350 --> 00:21:07,840 early early next week if we can come up 586 00:21:12,230 --> 00:21:09,360 with a plan again i think that's the 587 00:21:13,990 --> 00:21:12,240 biggest driver is knowing what we do 588 00:21:15,510 --> 00:21:14,000 and and 589 00:21:17,830 --> 00:21:15,520 having worked it enough to feel 590 00:21:20,470 --> 00:21:17,840 confident that we have you know plan a 591 00:21:22,789 --> 00:21:20,480 plan b plan c and plan d potted so we 592 00:21:24,710 --> 00:21:22,799 can get out there and be productive uh 593 00:21:26,549 --> 00:21:24,720 when we do finally go outside 594 00:21:31,830 --> 00:21:26,559 thank you very much 595 00:21:36,789 --> 00:21:34,390 yeah hi guys um yeah maybe this is for 596 00:21:39,430 --> 00:21:36,799 keith or or uh or ed i'm not sure i'm a 597 00:21:41,190 --> 00:21:39,440 little bit confused is the box 598 00:21:43,190 --> 00:21:41,200 is the bolt jammed right now in other 599 00:21:45,190 --> 00:21:43,200 words is it jammed on the post or can 600 00:21:47,350 --> 00:21:45,200 you get it off that's my first question 601 00:21:49,990 --> 00:21:47,360 i'm confused about it secondly 602 00:21:52,470 --> 00:21:50,000 is can this device could it is it even 603 00:21:54,070 --> 00:21:52,480 possible to jumper this thing outside if 604 00:21:55,909 --> 00:21:54,080 it came down to that if you could never 605 00:21:57,909 --> 00:21:55,919 get it to drive down on the post like 606 00:22:00,070 --> 00:21:57,919 you want it to are there possible 607 00:22:01,510 --> 00:22:00,080 workarounds to uh with cabling or 608 00:22:04,390 --> 00:22:01,520 whatever to 609 00:22:06,310 --> 00:22:04,400 to get around that 610 00:22:09,750 --> 00:22:06,320 well to answer the first part of your 611 00:22:10,549 --> 00:22:09,760 question the the bolt is uh jammed right 612 00:22:12,230 --> 00:22:10,559 now 613 00:22:13,669 --> 00:22:12,240 we 614 00:22:15,830 --> 00:22:13,679 don't remember the exact turn count that 615 00:22:18,390 --> 00:22:15,840 we got on it but we did drive it with 616 00:22:20,390 --> 00:22:18,400 the torque multiplier that keith 617 00:22:24,310 --> 00:22:20,400 explained and drove it as far as we 618 00:22:27,029 --> 00:22:24,320 could before the the tool torqued out 619 00:22:29,190 --> 00:22:27,039 we did that however such that we could 620 00:22:30,630 --> 00:22:29,200 still be able to get it back out if if 621 00:22:32,470 --> 00:22:30,640 and when we need to 622 00:22:33,510 --> 00:22:32,480 so we were very methodical in our 623 00:22:36,630 --> 00:22:33,520 approach 624 00:22:38,310 --> 00:22:36,640 so that we always had a a known setting 625 00:22:40,070 --> 00:22:38,320 that we could use to back it back out so 626 00:22:43,190 --> 00:22:40,080 you saw us backing out several times 627 00:22:46,149 --> 00:22:43,200 today and the torque that we went into 628 00:22:47,830 --> 00:22:46,159 the uh the bolt the last time 629 00:22:49,270 --> 00:22:47,840 there's still a torque setting 630 00:22:51,510 --> 00:22:49,280 with that torque multiplier that'll 631 00:22:53,190 --> 00:22:51,520 allow us to get it back out so it's not 632 00:22:54,549 --> 00:22:53,200 jammed in there such that we can't go 633 00:22:56,149 --> 00:22:54,559 either direction 634 00:22:58,149 --> 00:22:56,159 we did leave it 635 00:22:59,830 --> 00:22:58,159 with it jammed in 636 00:23:00,950 --> 00:22:59,840 i'd say probably four or five turns on 637 00:23:02,870 --> 00:23:00,960 the bolt 638 00:23:04,549 --> 00:23:02,880 and then with a long duration tether 639 00:23:08,630 --> 00:23:04,559 that keith mentioned 640 00:23:11,750 --> 00:23:08,640 as far as jumpers to go between the s0 641 00:23:13,590 --> 00:23:11,760 truss and the mbsu for example we don't 642 00:23:16,230 --> 00:23:13,600 have anything like that right now it 643 00:23:17,830 --> 00:23:16,240 doesn't mean that creative people 644 00:23:20,549 --> 00:23:17,840 on orbit and on the ground couldn't come 645 00:23:23,190 --> 00:23:20,559 up with solutions so as of right now 646 00:23:24,789 --> 00:23:23,200 we've only just begun to start talking 647 00:23:26,789 --> 00:23:24,799 about what the different options might 648 00:23:28,789 --> 00:23:26,799 be of course we want to really resolve 649 00:23:29,909 --> 00:23:28,799 the issue and get the box fully 650 00:23:31,909 --> 00:23:29,919 installed 651 00:23:33,990 --> 00:23:31,919 but part of that of course will will 652 00:23:35,669 --> 00:23:34,000 spin off i'm sure discussions about what 653 00:23:37,830 --> 00:23:35,679 happens if we just can't and what is our 654 00:23:39,830 --> 00:23:37,840 long-term solution going to be and with 655 00:23:41,430 --> 00:23:39,840 the creativity that there is with people 656 00:23:43,029 --> 00:23:41,440 around here and 657 00:23:44,630 --> 00:23:43,039 if we have the materials on board there 658 00:23:47,350 --> 00:23:44,640 could very well be a possibility but we 659 00:23:48,390 --> 00:23:47,360 haven't had any of those discussions yet 660 00:23:50,149 --> 00:23:48,400 well 661 00:23:52,149 --> 00:23:50,159 can you give us any idea of what sorts 662 00:23:53,430 --> 00:23:52,159 of things might be done to get this 663 00:23:55,510 --> 00:23:53,440 thing fixed i realize you don't have an 664 00:23:57,750 --> 00:23:55,520 answer yet but i'm i'm confused i guess 665 00:24:00,070 --> 00:23:57,760 enough to have any idea what might be 666 00:24:01,590 --> 00:24:00,080 possible thanks 667 00:24:02,830 --> 00:24:01,600 well let's see 668 00:24:05,669 --> 00:24:02,840 obviously the 669 00:24:07,669 --> 00:24:05,679 the go straight added approach was tried 670 00:24:09,029 --> 00:24:07,679 today we tried multiple torques of just 671 00:24:11,190 --> 00:24:09,039 driving it in multiple torques of 672 00:24:12,230 --> 00:24:11,200 driving it out wiggle it this way wiggle 673 00:24:14,390 --> 00:24:12,240 it that way 674 00:24:16,789 --> 00:24:14,400 can't it in different orientations so 675 00:24:18,470 --> 00:24:16,799 those were all the the easy 676 00:24:21,430 --> 00:24:18,480 maybe not so easy but the the lowest 677 00:24:22,789 --> 00:24:21,440 hanging fruit uh to attempt so really 678 00:24:24,549 --> 00:24:22,799 the first thing that has to happen is we 679 00:24:26,230 --> 00:24:24,559 have to like mr sufferdini said go back 680 00:24:27,830 --> 00:24:26,240 and look at the vehicle 681 00:24:29,269 --> 00:24:27,840 go look at the design and see if there 682 00:24:31,430 --> 00:24:29,279 might be some 683 00:24:34,630 --> 00:24:31,440 some tricks in there that we can use to 684 00:24:36,149 --> 00:24:34,640 use the tools to just actuate that bolt 685 00:24:39,350 --> 00:24:36,159 keith mentioned the connector cleaner 686 00:24:40,870 --> 00:24:39,360 tool we i believe we have additional 687 00:24:42,710 --> 00:24:40,880 capabilities with 688 00:24:44,230 --> 00:24:42,720 similar tools like that to possibly 689 00:24:46,789 --> 00:24:44,240 clean out the 690 00:24:48,470 --> 00:24:46,799 the s0 side and the bolt side so people 691 00:24:50,310 --> 00:24:48,480 will be looking at that 692 00:24:52,470 --> 00:24:50,320 there's there's a lubricant i'm sure you 693 00:24:54,870 --> 00:24:52,480 heard the bolt threads and the 694 00:24:56,789 --> 00:24:54,880 receptacle threads were lubricated 695 00:24:58,549 --> 00:24:56,799 people i'm sure we'll be looking at that 696 00:25:01,750 --> 00:24:58,559 and see if there might be something we 697 00:25:03,990 --> 00:25:01,760 need to do in the ways of lubrication 698 00:25:06,230 --> 00:25:04,000 to make things turn a little bit 699 00:25:08,149 --> 00:25:06,240 more easily 700 00:25:09,669 --> 00:25:08,159 and that's just off the top of my head 701 00:25:10,870 --> 00:25:09,679 trying to come up with things that 702 00:25:12,549 --> 00:25:10,880 people are going to look at and i'm sure 703 00:25:15,750 --> 00:25:12,559 we'll go even deeper and further to come 704 00:25:17,510 --> 00:25:15,760 up with like you said plans a through d 705 00:25:18,549 --> 00:25:17,520 i will mention a couple other for you 706 00:25:20,310 --> 00:25:18,559 bill we 707 00:25:21,830 --> 00:25:20,320 you have to keep in mind it's a blind 708 00:25:25,269 --> 00:25:21,840 mate connection so when you talk about 709 00:25:27,269 --> 00:25:25,279 the jumper when the mbsu comes down 710 00:25:29,750 --> 00:25:27,279 not only are the electrical connectors 711 00:25:32,310 --> 00:25:29,760 connecting but the fins for the cooling 712 00:25:34,630 --> 00:25:32,320 system are are can are interlacing with 713 00:25:37,110 --> 00:25:34,640 one another and we have to have that 714 00:25:38,870 --> 00:25:37,120 interface in order to keep it cool so 715 00:25:41,269 --> 00:25:38,880 the idea of a jumper is very difficult 716 00:25:42,950 --> 00:25:41,279 because you got to get in there and try 717 00:25:44,710 --> 00:25:42,960 to get the jumpers between the blind 718 00:25:46,070 --> 00:25:44,720 mate connection and still get the box 719 00:25:47,750 --> 00:25:46,080 down but you can't get the box down 720 00:25:50,390 --> 00:25:47,760 because the screw won't 721 00:25:52,390 --> 00:25:50,400 won't screw down so you we really can't 722 00:25:54,390 --> 00:25:52,400 operate in a configuration where the 723 00:25:56,390 --> 00:25:54,400 mbsu at least not at high loads where 724 00:25:58,710 --> 00:25:56,400 the mbsu is not connected to this heat 725 00:26:00,230 --> 00:25:58,720 exchanger so that's one of the one of 726 00:26:01,590 --> 00:26:00,240 the issues and so 727 00:26:04,630 --> 00:26:01,600 some of the things we've talked about 728 00:26:06,149 --> 00:26:04,640 while ed was busy doing his his day job 729 00:26:08,149 --> 00:26:06,159 back with the engineers we talked about 730 00:26:10,950 --> 00:26:08,159 was is there a way to either remove the 731 00:26:14,390 --> 00:26:10,960 post itself or remove the screw from the 732 00:26:16,149 --> 00:26:14,400 mbsu in order to to get it down and let 733 00:26:18,710 --> 00:26:16,159 just the other bolt what we call the h1 734 00:26:20,870 --> 00:26:18,720 bolt hold the mbsu in place and maybe 735 00:26:22,950 --> 00:26:20,880 add a strap 736 00:26:24,870 --> 00:26:22,960 it turns out both of those are kind of 737 00:26:26,870 --> 00:26:24,880 difficult 738 00:26:28,630 --> 00:26:26,880 but the the teams that's those are two 739 00:26:30,710 --> 00:26:28,640 other options the teams are off to look 740 00:26:32,390 --> 00:26:30,720 at uh we'll look at whether or not we 741 00:26:34,549 --> 00:26:32,400 can go higher on torques if we change 742 00:26:37,190 --> 00:26:34,559 techniques like ed mentioned 743 00:26:39,430 --> 00:26:37,200 uh we also are considering whether the 744 00:26:41,590 --> 00:26:39,440 the spdm can be utilized and whether or 745 00:26:44,870 --> 00:26:41,600 not as a robot 746 00:26:46,710 --> 00:26:44,880 we can apply forces on it to help it go 747 00:26:48,789 --> 00:26:46,720 down all of these things are being 748 00:26:50,630 --> 00:26:48,799 kicked around and i assume uh starting 749 00:26:52,710 --> 00:26:50,640 tomorrow the teams will have a whole 750 00:26:55,269 --> 00:26:52,720 list of other things as ed said 751 00:26:56,470 --> 00:26:55,279 as possibilities that we'll sort through 752 00:27:00,149 --> 00:26:56,480 to see if we can get this thing 753 00:27:00,159 --> 00:27:04,310 okay anything else bill 754 00:27:14,070 --> 00:27:05,430 all right then we'll go ahead and move 755 00:27:18,549 --> 00:27:15,750 all right not hearing anything todd with 756 00:27:22,789 --> 00:27:21,830 uh thanks todd halberson of florida 757 00:27:26,549 --> 00:27:22,799 today 758 00:27:27,669 --> 00:27:26,559 for anybody who wants to take it i'm i'm 759 00:27:31,350 --> 00:27:27,679 wondering if 760 00:27:32,789 --> 00:27:31,360 somebody can explain uh in real layman's 761 00:27:35,830 --> 00:27:32,799 terms 762 00:27:39,430 --> 00:27:35,840 why you would not be able to you know 763 00:27:42,470 --> 00:27:39,440 drive a simple bolt something that 764 00:27:45,830 --> 00:27:42,480 everybody does in their garage 765 00:27:49,350 --> 00:27:45,840 i suspect it has to do with thermal 766 00:27:50,389 --> 00:27:49,360 conditions in space but uh perhaps you 767 00:27:53,269 --> 00:27:50,399 could 768 00:27:57,750 --> 00:27:55,510 who wants to take it gosh i guess if we 769 00:27:58,870 --> 00:27:57,760 knew that we'd have it bolted down by 770 00:28:02,789 --> 00:27:58,880 now 771 00:28:06,310 --> 00:28:02,799 cross-threaded it's an acme bolt it's a 772 00:28:08,549 --> 00:28:06,320 it's a very big square threaded bolt 773 00:28:11,029 --> 00:28:08,559 but bolt galling is a very 774 00:28:12,549 --> 00:28:11,039 um common condition 775 00:28:14,950 --> 00:28:12,559 which you may or may not have 776 00:28:17,430 --> 00:28:14,960 experienced in your garage 777 00:28:19,269 --> 00:28:17,440 you know most of us us uh shade tree 778 00:28:22,310 --> 00:28:19,279 mechanics and i count myself as one of 779 00:28:23,750 --> 00:28:22,320 those uh i've i've i've 780 00:28:26,630 --> 00:28:23,760 crossed threaded a bolt or two in my 781 00:28:28,149 --> 00:28:26,640 life and galled a bolt or two in my life 782 00:28:30,389 --> 00:28:28,159 and um 783 00:28:32,310 --> 00:28:30,399 you know when you do that it's your it's 784 00:28:34,230 --> 00:28:32,320 your car and you're only marginally 785 00:28:35,830 --> 00:28:34,240 worried about your success and so you 786 00:28:38,630 --> 00:28:35,840 just get a bigger torque wrench out and 787 00:28:40,310 --> 00:28:38,640 you hope you can get it down um but you 788 00:28:43,430 --> 00:28:40,320 know really as an ops team we can't do 789 00:28:44,389 --> 00:28:43,440 that so we have to worry about 790 00:28:48,789 --> 00:28:44,399 you can 791 00:28:51,510 --> 00:28:48,799 bolts and then not be able to move them 792 00:28:53,750 --> 00:28:51,520 and in this case if we had if we had 793 00:28:55,510 --> 00:28:53,760 done that with this particular box and 794 00:28:58,870 --> 00:28:55,520 gotten it half on 795 00:29:00,870 --> 00:28:58,880 we'd be in a really bad spot so 796 00:29:02,950 --> 00:29:00,880 part of it is we don't just get the 797 00:29:04,870 --> 00:29:02,960 biggest torque wrench out and try to you 798 00:29:06,710 --> 00:29:04,880 know really kind of lean on this thing 799 00:29:08,549 --> 00:29:06,720 until it starts to move or that or the 800 00:29:10,070 --> 00:29:08,559 the bolt shears off 801 00:29:11,669 --> 00:29:10,080 because that puts you in a much worse 802 00:29:13,269 --> 00:29:11,679 position so 803 00:29:15,190 --> 00:29:13,279 it's a you know it's got to be a 804 00:29:16,549 --> 00:29:15,200 combination of 805 00:29:21,350 --> 00:29:16,559 of 806 00:29:23,909 --> 00:29:21,360 assumed it was associated with how the 807 00:29:26,549 --> 00:29:23,919 box goes down as we said earlier you've 808 00:29:28,549 --> 00:29:26,559 got as the box comes down you've got one 809 00:29:30,389 --> 00:29:28,559 bolt driving first in fact we didn't 810 00:29:32,549 --> 00:29:30,399 start pulling down on the other bolt 811 00:29:34,230 --> 00:29:32,559 which is a little shorter the h1 bolt 812 00:29:35,909 --> 00:29:34,240 the h2 bolts got to get you down and 813 00:29:37,190 --> 00:29:35,919 then you drive the h1 bolt well while 814 00:29:38,870 --> 00:29:37,200 that's happening 815 00:29:40,950 --> 00:29:38,880 you're you're eventually going to come 816 00:29:42,630 --> 00:29:40,960 down and settle on the on the on the 817 00:29:45,510 --> 00:29:42,640 fins and there's a whole bunch of fins 818 00:29:47,029 --> 00:29:45,520 that that small fins that meet each 819 00:29:48,710 --> 00:29:47,039 other and then you're going to have the 820 00:29:50,789 --> 00:29:48,720 connection over here well in the process 821 00:29:53,029 --> 00:29:50,799 of doing that you're trying to make sure 822 00:29:55,269 --> 00:29:53,039 this box is coming down square and so we 823 00:29:56,950 --> 00:29:55,279 we assumed eventually after we pulled 824 00:29:58,070 --> 00:29:56,960 the box off and confirmed that the bolts 825 00:29:59,510 --> 00:29:58,080 didn't look 826 00:30:01,990 --> 00:29:59,520 galled and that's kind of a hard 827 00:30:03,430 --> 00:30:02,000 assessment to make outside but but it 828 00:30:04,870 --> 00:30:03,440 looked like it wasn't gold and after 829 00:30:06,789 --> 00:30:04,880 cleaning it up we thought maybe it was a 830 00:30:08,389 --> 00:30:06,799 technique thing and so we started down 831 00:30:10,789 --> 00:30:08,399 this technique path 832 00:30:12,310 --> 00:30:10,799 of trying to get this this uh this box 833 00:30:13,669 --> 00:30:12,320 settled down so 834 00:30:15,350 --> 00:30:13,679 so somewhere in there you're either 835 00:30:16,549 --> 00:30:15,360 dealing with contamination you're 836 00:30:18,070 --> 00:30:16,559 dealing with 837 00:30:20,070 --> 00:30:18,080 uh you know we're getting it a little 838 00:30:22,630 --> 00:30:20,080 cocked and that's making it hard for us 839 00:30:23,750 --> 00:30:22,640 to drive the bolt maybe the bolt is gall 840 00:30:25,990 --> 00:30:23,760 that's one of the things we'll have to 841 00:30:27,830 --> 00:30:26,000 talk about can we recover from 842 00:30:29,269 --> 00:30:27,840 maybe is a thermal difference and for 843 00:30:31,029 --> 00:30:29,279 some reason the bolts a little bigger 844 00:30:32,950 --> 00:30:31,039 than the than the socket but we go to 845 00:30:36,630 --> 00:30:32,960 great pains to make sure that's not the 846 00:30:38,310 --> 00:30:36,640 case when we do tolerances before we fly 847 00:30:40,549 --> 00:30:38,320 but we'll look at all these different 848 00:30:41,909 --> 00:30:40,559 options to to to 849 00:30:44,310 --> 00:30:41,919 see what's keeping us from getting this 850 00:30:47,029 --> 00:30:44,320 bolt down and uh 851 00:30:48,710 --> 00:30:47,039 and and see if we can find a path that 852 00:30:51,190 --> 00:30:48,720 will give us the 853 00:30:53,430 --> 00:30:51,200 the additional force or oomph we need to 854 00:30:55,510 --> 00:30:53,440 get this installed without actually 855 00:30:57,269 --> 00:30:55,520 damaging ourselves to the damaging it to 856 00:30:59,269 --> 00:30:57,279 the point that we can't 857 00:31:01,669 --> 00:30:59,279 ultimately remove it and get a 858 00:31:03,909 --> 00:31:01,679 new one on again as you recall we pulled 859 00:31:05,430 --> 00:31:03,919 this off when we pulled the old one off 860 00:31:08,070 --> 00:31:05,440 we noticed the contamination but we 861 00:31:10,070 --> 00:31:08,080 looked at the bolt on the on the on the 862 00:31:11,509 --> 00:31:10,080 failed unit that came off the bolt was 863 00:31:14,310 --> 00:31:11,519 in good shape we went and installed it 864 00:31:15,750 --> 00:31:14,320 in the fsc and and other than you know 865 00:31:18,870 --> 00:31:15,760 trying to get it positioned down there 866 00:31:20,470 --> 00:31:18,880 and torqued down we it went in okay 867 00:31:22,789 --> 00:31:20,480 and so right now we're not assuming that 868 00:31:24,230 --> 00:31:22,799 we're dealing with a completely 869 00:31:26,470 --> 00:31:24,240 um 870 00:31:28,070 --> 00:31:26,480 damaged socket 871 00:31:30,070 --> 00:31:28,080 or that we're not dealing with a bolt 872 00:31:31,750 --> 00:31:30,080 issue on the spare 873 00:31:33,590 --> 00:31:31,760 otherwise we could just we could go get 874 00:31:34,870 --> 00:31:33,600 the other spare and install it but that 875 00:31:36,230 --> 00:31:34,880 would be one of the things we'll talk 876 00:31:37,509 --> 00:31:36,240 about is whether or not we think maybe 877 00:31:39,190 --> 00:31:37,519 we did something 878 00:31:40,549 --> 00:31:39,200 to the spare in the process of trying to 879 00:31:42,070 --> 00:31:40,559 get it installed so all those things 880 00:31:44,389 --> 00:31:42,080 we're going to have to talk about 881 00:31:45,909 --> 00:31:44,399 uh to see where we think we are and what 882 00:31:49,110 --> 00:31:45,919 the what the path through the wilderness 883 00:31:53,590 --> 00:31:51,029 thanks mike 884 00:32:00,549 --> 00:31:53,600 okay on to uh pat with the german press 885 00:32:06,389 --> 00:32:04,230 all right uh denise space.com 886 00:32:08,710 --> 00:32:06,399 hi thanks um i think this question is 887 00:32:10,630 --> 00:32:08,720 for ed um i'm just wondering if 888 00:32:13,190 --> 00:32:10,640 um you're still thinking or early 889 00:32:15,269 --> 00:32:13,200 assessments um lead you to believe that 890 00:32:15,909 --> 00:32:15,279 there might be some debris still stuck 891 00:32:20,710 --> 00:32:15,919 in 892 00:32:24,230 --> 00:32:20,720 likely caused when the bolts from the 893 00:32:26,470 --> 00:32:24,240 faulty unit before being removed 894 00:32:29,190 --> 00:32:26,480 well as keith mentioned we did two 895 00:32:32,230 --> 00:32:29,200 different methods of trying to get fod 896 00:32:33,990 --> 00:32:32,240 out of the s0 receptacle the first thing 897 00:32:35,909 --> 00:32:34,000 that we did 898 00:32:38,149 --> 00:32:35,919 when we pulled the mbsu out for the 899 00:32:39,029 --> 00:32:38,159 first time we had sunny williams go look 900 00:32:40,630 --> 00:32:39,039 at it 901 00:32:42,470 --> 00:32:40,640 and she did tell us about the little bit 902 00:32:44,630 --> 00:32:42,480 of fod that she could see 903 00:32:46,149 --> 00:32:44,640 and based on that we went and got the 904 00:32:47,430 --> 00:32:46,159 needle nose pliers out of the crew lock 905 00:32:50,149 --> 00:32:47,440 and had her 906 00:32:51,990 --> 00:32:50,159 put that into the receptacle to try to 907 00:32:53,669 --> 00:32:52,000 get the debris out of 908 00:32:55,909 --> 00:32:53,679 out of the area 909 00:32:56,710 --> 00:32:55,919 we attempted installing the mbsu as you 910 00:32:59,110 --> 00:32:56,720 know 911 00:33:01,509 --> 00:32:59,120 and didn't have luck so we got the 912 00:33:03,990 --> 00:33:01,519 connector cleaner tool and with that we 913 00:33:04,630 --> 00:33:04,000 shot a couple puffs of nitrogen in there 914 00:33:06,870 --> 00:33:04,640 and 915 00:33:09,110 --> 00:33:06,880 she reported that she did see 916 00:33:10,950 --> 00:33:09,120 more debris coming out and after that 917 00:33:12,789 --> 00:33:10,960 was complete she looked in and as far as 918 00:33:15,029 --> 00:33:12,799 she could see there was nothing left 919 00:33:16,870 --> 00:33:15,039 inside the receptacle so we're fairly 920 00:33:18,630 --> 00:33:16,880 confident for at least the best that we 921 00:33:20,070 --> 00:33:18,640 could see that there was 922 00:33:22,789 --> 00:33:20,080 no debris 923 00:33:24,950 --> 00:33:22,799 remaining inside the receptacle when we 924 00:33:26,230 --> 00:33:24,960 went to install it this last time now it 925 00:33:27,830 --> 00:33:26,240 doesn't mean that there of course isn't 926 00:33:29,430 --> 00:33:27,840 debris generated now based on the 927 00:33:30,710 --> 00:33:29,440 efforts that we undertook and ultimately 928 00:33:32,310 --> 00:33:30,720 torquing out the 929 00:33:34,149 --> 00:33:32,320 the bolt but when we went to install it 930 00:33:35,669 --> 00:33:34,159 the last time at least as far as we 931 00:33:38,389 --> 00:33:35,679 could could see in the best of our 932 00:33:40,310 --> 00:33:38,399 ability we were clear of fod and we also 933 00:33:42,230 --> 00:33:40,320 inspected the bolt 934 00:33:44,950 --> 00:33:42,240 and gave it a couple of puffs of 935 00:33:48,950 --> 00:33:44,960 nitrogen as well to get anything 936 00:33:51,509 --> 00:33:48,960 off of the bolt that we could liberate 937 00:33:53,350 --> 00:33:51,519 thanks and as far as i know 938 00:33:54,549 --> 00:33:53,360 it wasn't possible or pictures just 939 00:33:56,310 --> 00:33:54,559 weren't taken 940 00:33:57,669 --> 00:33:56,320 of the work site um 941 00:33:59,990 --> 00:33:57,679 does that pose a challenge not being 942 00:34:01,990 --> 00:34:00,000 able to directly see 943 00:34:03,350 --> 00:34:02,000 what's going on or is does it not really 944 00:34:05,750 --> 00:34:03,360 matter because you have the building 945 00:34:07,750 --> 00:34:05,760 plans for all these components anyway 946 00:34:10,950 --> 00:34:07,760 well we did actually have the helmet 947 00:34:13,430 --> 00:34:10,960 cameras from both sunny and aki so we 948 00:34:14,950 --> 00:34:13,440 were able to get pretty good views but 949 00:34:16,470 --> 00:34:14,960 of course the the resolution that we 950 00:34:18,470 --> 00:34:16,480 would need to actually be able to see 951 00:34:20,550 --> 00:34:18,480 inside the bolt is something that we 952 00:34:22,310 --> 00:34:20,560 just don't have on those cameras we did 953 00:34:23,829 --> 00:34:22,320 have the crew take still pictures 954 00:34:25,909 --> 00:34:23,839 however we 955 00:34:29,190 --> 00:34:25,919 the very first time that we got the 956 00:34:31,030 --> 00:34:29,200 failed mbsu out we had sunny take some 957 00:34:32,230 --> 00:34:31,040 still pictures so we know 958 00:34:33,990 --> 00:34:32,240 what 959 00:34:35,510 --> 00:34:34,000 the the situation looked like before we 960 00:34:39,430 --> 00:34:35,520 attempted any cleaning and before we 961 00:34:41,669 --> 00:34:39,440 attempted installing the the spare mbsu 962 00:34:44,310 --> 00:34:41,679 and then also as we were leaving the 963 00:34:45,669 --> 00:34:44,320 work site we had aki use his camera to 964 00:34:47,190 --> 00:34:45,679 take some more pictures of the worksite 965 00:34:49,669 --> 00:34:47,200 and of course that's with the 966 00:34:51,349 --> 00:34:49,679 mbsu installed as we have it right now 967 00:34:52,869 --> 00:34:51,359 but at least we have good clear 968 00:34:53,669 --> 00:34:52,879 indications of what the work site looks 969 00:34:55,430 --> 00:34:53,679 like 970 00:34:57,430 --> 00:34:55,440 we were also getting great verbal cues 971 00:34:59,829 --> 00:34:57,440 from the crew they were telling us the 972 00:35:01,750 --> 00:34:59,839 separation distances between the 973 00:35:03,030 --> 00:35:01,760 hardware and the truss for example they 974 00:35:04,630 --> 00:35:03,040 were telling us what the status 975 00:35:05,910 --> 00:35:04,640 indicators were doing that keith 976 00:35:08,150 --> 00:35:05,920 mentioned 977 00:35:09,030 --> 00:35:08,160 so based on their verbal cues we were 978 00:35:11,109 --> 00:35:09,040 also 979 00:35:12,470 --> 00:35:11,119 i feel confidently well aware of what 980 00:35:16,069 --> 00:35:12,480 was going on with 981 00:35:17,030 --> 00:35:16,079 the situation and the work site 982 00:35:19,510 --> 00:35:17,040 thank you 983 00:35:21,829 --> 00:35:19,520 okay and i think our last caller is 984 00:35:23,990 --> 00:35:21,839 irene klotz 985 00:35:26,150 --> 00:35:24,000 thanks kelly um i have a few different 986 00:35:28,069 --> 00:35:26,160 questions uh first of all could someone 987 00:35:30,870 --> 00:35:28,079 just describe the 988 00:35:32,470 --> 00:35:30,880 dimensions of this bolt and also just 989 00:35:35,349 --> 00:35:32,480 i'm having trouble getting my head 990 00:35:37,510 --> 00:35:35,359 around this neither the h1 or the h2 991 00:35:39,349 --> 00:35:37,520 bolts are currently engaged is that 992 00:35:40,390 --> 00:35:39,359 correct 993 00:35:43,750 --> 00:35:40,400 well 994 00:35:45,270 --> 00:35:43,760 um as we mentioned the the h2 bolt is 995 00:35:46,710 --> 00:35:45,280 the first bolt that we drive when we're 996 00:35:48,310 --> 00:35:46,720 putting the box in and so all the 997 00:35:49,510 --> 00:35:48,320 troubleshooting that we did back and 998 00:35:51,829 --> 00:35:49,520 forth 999 00:35:55,349 --> 00:35:51,839 allowed us to get at least a few turns 1000 00:35:57,510 --> 00:35:55,359 into the h2 bolt so that is driven 1001 00:35:58,790 --> 00:35:57,520 probably on the order of four or five 1002 00:36:01,109 --> 00:35:58,800 turns 1003 00:36:02,310 --> 00:36:01,119 the dimensions the box itself is 1004 00:36:03,270 --> 00:36:02,320 probably 1005 00:36:06,630 --> 00:36:03,280 um 1006 00:36:07,990 --> 00:36:06,640 you know i would say on the order of a 1007 00:36:10,829 --> 00:36:08,000 probably about 1008 00:36:13,990 --> 00:36:10,839 i don't know 60 centimeters by 1009 00:36:15,030 --> 00:36:14,000 about 40 centimeters by about 1010 00:36:17,190 --> 00:36:15,040 maybe 1011 00:36:18,470 --> 00:36:17,200 i don't know a foot deep i'm changing 1012 00:36:21,190 --> 00:36:18,480 you know units here in the middle of 1013 00:36:23,990 --> 00:36:21,200 this thing but uh the bolt itself is a 1014 00:36:25,030 --> 00:36:24,000 is a pretty good size bolt um 1015 00:36:27,510 --> 00:36:25,040 i can't 1016 00:36:30,630 --> 00:36:27,520 really it's hard to show in the in what 1017 00:36:33,030 --> 00:36:30,640 i have here but um it's a it's a pretty 1018 00:36:36,230 --> 00:36:33,040 good gauge bolt it's it's sturdy it's 1019 00:36:38,790 --> 00:36:36,240 used to for launch loads and um and and 1020 00:36:41,670 --> 00:36:38,800 holding the box in place uh during that 1021 00:36:43,750 --> 00:36:41,680 and then again when it's on orbit 1022 00:36:45,349 --> 00:36:43,760 so we could probably provide you with 1023 00:36:46,710 --> 00:36:45,359 information on on all of those 1024 00:36:49,510 --> 00:36:46,720 dimensions 1025 00:36:51,910 --> 00:36:49,520 but i don't have them here 1026 00:36:55,270 --> 00:36:51,920 oh um okay can you you can't just like 1027 00:36:58,470 --> 00:36:55,280 estimate the diameter of it like the 1028 00:36:58,480 --> 00:37:00,950 think of 1029 00:37:06,829 --> 00:37:02,870 i don't know if somebody can zoom in on 1030 00:37:10,790 --> 00:37:09,109 size okay well 1031 00:37:13,910 --> 00:37:10,800 to give you a gauge 1032 00:37:15,270 --> 00:37:13,920 this is this is the bolt right here and 1033 00:37:17,510 --> 00:37:15,280 i'd say 1034 00:37:19,430 --> 00:37:17,520 probably on the order of i don't know 1035 00:37:21,510 --> 00:37:19,440 half inch to three-fourths of an inch 1036 00:37:23,030 --> 00:37:21,520 and it drives into this particular hole 1037 00:37:24,470 --> 00:37:23,040 right here 1038 00:37:26,470 --> 00:37:24,480 so 1039 00:37:27,910 --> 00:37:26,480 if that gives you any indication 1040 00:37:29,589 --> 00:37:27,920 the torque that 1041 00:37:30,470 --> 00:37:29,599 one of the things that 1042 00:37:33,670 --> 00:37:30,480 we 1043 00:37:34,790 --> 00:37:33,680 like this 1044 00:37:37,750 --> 00:37:34,800 is 1045 00:37:38,710 --> 00:37:37,760 as ed mentioned we we changed the torque 1046 00:37:40,710 --> 00:37:38,720 um 1047 00:37:43,430 --> 00:37:40,720 stepping it up and increasing it each 1048 00:37:45,750 --> 00:37:43,440 time we tried to drive uh the bolt there 1049 00:37:48,630 --> 00:37:45,760 is a failure threshold that we that we 1050 00:37:50,550 --> 00:37:48,640 work towards and so 1051 00:37:53,109 --> 00:37:50,560 we want to make sure that we maintain a 1052 00:37:55,030 --> 00:37:53,119 torque that will not shear the bolt off 1053 00:37:56,550 --> 00:37:55,040 and and that creates all kinds of other 1054 00:37:58,230 --> 00:37:56,560 problems and and so part of our 1055 00:38:01,270 --> 00:37:58,240 troubleshooting and what we want to do 1056 00:38:03,430 --> 00:38:01,280 and maintain is is not actually causing 1057 00:38:04,790 --> 00:38:03,440 irreparable damage such as breaking a 1058 00:38:06,150 --> 00:38:04,800 torque so 1059 00:38:08,230 --> 00:38:06,160 the torque value 1060 00:38:09,750 --> 00:38:08,240 that this particular bolt would shear at 1061 00:38:12,630 --> 00:38:09,760 while driving it in is something on the 1062 00:38:15,109 --> 00:38:12,640 order of 63 foot pounds 1063 00:38:16,550 --> 00:38:15,119 so we keep that in our scope as we're 1064 00:38:19,109 --> 00:38:16,560 increasing the torque and using the 1065 00:38:21,510 --> 00:38:19,119 tools to drive it we could well exceed 1066 00:38:23,589 --> 00:38:21,520 that with the tools that we have and so 1067 00:38:26,870 --> 00:38:23,599 we have to be very careful in how we 1068 00:38:30,069 --> 00:38:26,880 approach uh driving the bolt 1069 00:38:31,670 --> 00:38:30,079 thanks and um how many um how many of 1070 00:38:33,030 --> 00:38:31,680 the how many spare 1071 00:38:36,069 --> 00:38:33,040 units are 1072 00:38:37,990 --> 00:38:36,079 currently on the station 1073 00:38:39,190 --> 00:38:38,000 and have you i can't remember if this 1074 00:38:44,470 --> 00:38:39,200 has ever been 1075 00:38:48,150 --> 00:38:46,790 so i think we have uh so you're catching 1076 00:38:50,470 --> 00:38:48,160 us all cold because we have so many 1077 00:38:53,030 --> 00:38:50,480 spares on orbit now uh i believe we had 1078 00:38:54,630 --> 00:38:53,040 two mbsu spares on orbit uh in fact 1079 00:38:56,230 --> 00:38:54,640 we're fixing to fly one here in a few 1080 00:38:58,630 --> 00:38:56,240 flights but we have i believe we had two 1081 00:39:01,109 --> 00:38:58,640 spares on orbit so we were about to uh 1082 00:39:02,870 --> 00:39:01,119 we were about to consume this one and uh 1083 00:39:05,910 --> 00:39:02,880 and so that would leave us with one more 1084 00:39:07,510 --> 00:39:05,920 and then i believe the next htv flight 1085 00:39:10,230 --> 00:39:07,520 was going to bring up 1086 00:39:12,950 --> 00:39:10,240 another spare mbsu as well so we we do 1087 00:39:15,190 --> 00:39:12,960 have plenty of spares 1088 00:39:19,349 --> 00:39:15,200 and then the last uh question i had was 1089 00:39:21,750 --> 00:39:19,359 about the um science um impacts if any i 1090 00:39:23,270 --> 00:39:21,760 wasn't very clear about 1091 00:39:24,310 --> 00:39:23,280 why um 1092 00:39:27,030 --> 00:39:24,320 uh how 1093 00:39:29,829 --> 00:39:27,040 how you're going why you'd lose uh 1094 00:39:31,589 --> 00:39:29,839 to use the power availability of two of 1095 00:39:34,069 --> 00:39:31,599 the arrays 1096 00:39:38,150 --> 00:39:34,079 with this unit not connected 1097 00:39:40,710 --> 00:39:38,160 and um if you uh did power down anything 1098 00:39:43,270 --> 00:39:40,720 even you know today or yesterday 1099 00:39:45,190 --> 00:39:43,280 in preparation for the replacement of 1100 00:39:46,550 --> 00:39:45,200 this unit and in particular i'm 1101 00:39:49,190 --> 00:39:46,560 interested in 1102 00:39:51,589 --> 00:39:49,200 ams and any other of the 1103 00:39:53,990 --> 00:39:51,599 kind of very high profile experiments 1104 00:39:58,069 --> 00:39:56,230 well as far as the power downs are 1105 00:40:01,190 --> 00:39:58,079 concerned uh of course 1106 00:40:03,109 --> 00:40:01,200 the mbsu itself each we have four mbsus 1107 00:40:05,829 --> 00:40:03,119 operating on the vehicle and each of 1108 00:40:08,069 --> 00:40:05,839 them takes the input from two power 1109 00:40:11,030 --> 00:40:08,079 channels and just so you've got two 1110 00:40:13,349 --> 00:40:11,040 inputs and distributes them across 1111 00:40:15,030 --> 00:40:13,359 multiple different output feeds and we 1112 00:40:15,750 --> 00:40:15,040 route that to 1113 00:40:20,710 --> 00:40:15,760 all 1114 00:40:22,230 --> 00:40:20,720 of the laboratories and we send some of 1115 00:40:24,069 --> 00:40:22,240 that power back to the russian segment 1116 00:40:25,829 --> 00:40:24,079 as well 1117 00:40:29,030 --> 00:40:25,839 and so that's that's what the critical 1118 00:40:31,190 --> 00:40:29,040 function is that these mbsu's provide 1119 00:40:33,510 --> 00:40:31,200 so when you take away a quarter of uh 1120 00:40:37,430 --> 00:40:33,520 the capability and that specifically is 1121 00:40:39,430 --> 00:40:37,440 the 1a and 1b power channel feeds 1122 00:40:41,589 --> 00:40:39,440 we have to 1123 00:40:42,950 --> 00:40:41,599 make do with only the six remaining 1124 00:40:44,870 --> 00:40:42,960 power feeds coming out of the other 1125 00:40:47,109 --> 00:40:44,880 mbsus 1126 00:40:49,670 --> 00:40:47,119 and if of course everything on board the 1127 00:40:52,150 --> 00:40:49,680 vehicle uses power so we have to do a 1128 00:40:54,150 --> 00:40:52,160 balancing act with that power and our 1129 00:40:55,829 --> 00:40:54,160 our research facilities use power just 1130 00:40:58,710 --> 00:40:55,839 like everything else 1131 00:41:00,790 --> 00:40:58,720 and again it's at this point 1132 00:41:03,589 --> 00:41:00,800 getting ready for the eva 1133 00:41:04,470 --> 00:41:03,599 we went and made a specific power down 1134 00:41:06,630 --> 00:41:04,480 plan 1135 00:41:08,230 --> 00:41:06,640 so that we could keep all of our 1136 00:41:10,470 --> 00:41:08,240 necessary redundancies with these 1137 00:41:12,230 --> 00:41:10,480 jumpers installed we could 1138 00:41:13,430 --> 00:41:12,240 keep the heaters off that we didn't need 1139 00:41:15,270 --> 00:41:13,440 to be running 1140 00:41:18,390 --> 00:41:15,280 and basically make sure that we were in 1141 00:41:20,790 --> 00:41:18,400 a good power posture for this day 1142 00:41:22,630 --> 00:41:20,800 now we just need to continue that 1143 00:41:24,390 --> 00:41:22,640 through the next several days until we 1144 00:41:26,150 --> 00:41:24,400 get this issue resolved and we have a 1145 00:41:28,309 --> 00:41:26,160 great team a power resource team and 1146 00:41:30,390 --> 00:41:28,319 that is their primary function and their 1147 00:41:32,710 --> 00:41:30,400 exceptional added to looking at all the 1148 00:41:34,870 --> 00:41:32,720 different resources that are required 1149 00:41:36,710 --> 00:41:34,880 and so what will happen is 1150 00:41:37,589 --> 00:41:36,720 for any given day 1151 00:41:41,829 --> 00:41:37,599 the 1152 00:41:45,109 --> 00:41:41,839 your core systems that need just a given 1153 00:41:46,630 --> 00:41:45,119 set of power you have your core research 1154 00:41:49,750 --> 00:41:46,640 facilities that are always on for 1155 00:41:52,550 --> 00:41:49,760 example ams being one of those and then 1156 00:41:54,790 --> 00:41:52,560 you have the periodic loads be they the 1157 00:41:56,950 --> 00:41:54,800 space station robot arm or a specific 1158 00:41:59,589 --> 00:41:56,960 payload facility that needs power at a 1159 00:42:01,349 --> 00:41:59,599 specific time or for a specific day 1160 00:42:02,390 --> 00:42:01,359 all of those will go into the power 1161 00:42:03,589 --> 00:42:02,400 resource 1162 00:42:06,390 --> 00:42:03,599 officers 1163 00:42:09,109 --> 00:42:06,400 and they will lay it out onto the maps 1164 00:42:10,630 --> 00:42:09,119 of what's predicted to be our capability 1165 00:42:12,390 --> 00:42:10,640 for that given day 1166 00:42:13,829 --> 00:42:12,400 and ideally we'd like to accommodate 1167 00:42:15,430 --> 00:42:13,839 everything and sometimes that doesn't 1168 00:42:16,870 --> 00:42:15,440 work and now that we only have six of 1169 00:42:18,470 --> 00:42:16,880 eight power channels 1170 00:42:20,390 --> 00:42:18,480 we have to be 1171 00:42:22,550 --> 00:42:20,400 a little bit more constrained and what 1172 00:42:24,790 --> 00:42:22,560 we can manage and what that might mean 1173 00:42:27,430 --> 00:42:24,800 is that if a particular payload wants to 1174 00:42:28,950 --> 00:42:27,440 do science on wednesday 1175 00:42:31,349 --> 00:42:28,960 with some other activities also 1176 00:42:33,190 --> 00:42:31,359 occurring on wednesday they may have to 1177 00:42:35,510 --> 00:42:33,200 accept doing it on thursday instead just 1178 00:42:37,589 --> 00:42:35,520 so we can keep the power balance so as 1179 00:42:39,510 --> 00:42:37,599 far as capability for doing research the 1180 00:42:41,990 --> 00:42:39,520 ongoing research will keep going and 1181 00:42:44,069 --> 00:42:42,000 it's just the periodic research that we 1182 00:42:46,470 --> 00:42:44,079 pick and choose to do on certain days 1183 00:42:48,390 --> 00:42:46,480 will be a little bit more constrained on 1184 00:42:50,470 --> 00:42:48,400 potentially just given on what our 1185 00:42:52,710 --> 00:42:50,480 capabilities are for that day whether or 1186 00:42:54,390 --> 00:42:52,720 not they'll be able to operate but we're 1187 00:42:57,109 --> 00:42:54,400 not looking at needing to shut down any 1188 00:42:58,470 --> 00:42:57,119 of our key research facilities 1189 00:43:01,030 --> 00:42:58,480 not the ams 1190 00:43:02,630 --> 00:43:01,040 or any of the others and we will be able 1191 00:43:03,990 --> 00:43:02,640 to continue 1192 00:43:07,270 --> 00:43:04,000 doing all the research it's just a 1193 00:43:09,670 --> 00:43:07,280 matter of being able to schedule it 1194 00:43:11,270 --> 00:43:09,680 thanks very much 1195 00:43:12,630 --> 00:43:11,280 okay we skipped over a couple of folks 1196 00:43:17,030 --> 00:43:12,640 that were on the phone i want to make 1197 00:43:20,470 --> 00:43:17,990 okay 1198 00:43:22,150 --> 00:43:20,480 and any follow-ups here at jfc mark 1199 00:43:24,069 --> 00:43:22,160 yeah thanks mark 1200 00:43:25,589 --> 00:43:24,079 from aviation week and i think these are 1201 00:43:28,309 --> 00:43:25,599 pretty quick questions i just want to 1202 00:43:31,190 --> 00:43:28,319 make sure though that i understand the 1203 00:43:33,190 --> 00:43:31,200 four mbsus were 1204 00:43:35,990 --> 00:43:33,200 fitted onto the truss before it was 1205 00:43:38,069 --> 00:43:36,000 launched so seo came up 1206 00:43:40,870 --> 00:43:38,079 and 1207 00:43:43,109 --> 00:43:40,880 from your demonstrations the the bolts 1208 00:43:45,589 --> 00:43:43,119 are integrated into the 1209 00:43:47,829 --> 00:43:45,599 the truss and the mbsu it's not like you 1210 00:43:49,670 --> 00:43:47,839 can go get a spare bolt somewhere you 1211 00:43:55,270 --> 00:43:49,680 really have to work with what you've got 1212 00:43:58,230 --> 00:43:56,470 all right 1213 00:44:00,870 --> 00:43:58,240 well with that i want to thank everyone 1214 00:44:02,390 --> 00:44:00,880 for being here for today's briefing uh 1215 00:44:04,309 --> 00:44:02,400 here at the johnson space center the 1216 00:44:06,550 --> 00:44:04,319 newsroom will continue to track the 1217 00:44:08,630 --> 00:44:06,560 progress of the team as they work on the 1218 00:44:10,390 --> 00:44:08,640 issues that occurred today and we'll be 1219 00:44:13,589 --> 00:44:10,400 providing all the updates on the 1220 00:44:16,390 --> 00:44:13,599 internet at the nasa website at 1221 00:44:17,430 --> 00:44:16,400 www.nasa.gov 1222 00:44:19,109 --> 00:44:17,440 station