1 00:00:19,580 --> 00:00:16,930 [Music] 2 00:00:22,130 --> 00:00:19,590 well I was working up in Chattanooga I'd 3 00:00:24,670 --> 00:00:22,140 been there for years after getting out 4 00:00:27,260 --> 00:00:24,680 of Georgia Tech and I heard about the 5 00:00:30,350 --> 00:00:27,270 space not the space but the missile 6 00:00:33,889 --> 00:00:30,360 programs going on down here and I was 7 00:00:36,139 --> 00:00:33,899 curious came down for an interview just 8 00:00:38,000 --> 00:00:36,149 about the time that Explorer 1 was 9 00:00:41,060 --> 00:00:38,010 launched got hired a couple of months 10 00:00:44,030 --> 00:00:41,070 later went into the program coordination 11 00:00:47,509 --> 00:00:44,040 office and was there about a year and 12 00:00:51,139 --> 00:00:47,519 then transferred to the ARPA at the time 13 00:00:54,579 --> 00:00:51,149 was called ARPA NASA systems project 14 00:00:58,299 --> 00:00:54,589 office Saturn was building up from 15 00:01:02,209 --> 00:00:58,309 starting with the booster in 58 16 00:01:05,149 --> 00:01:02,219 from there on it went to the Silver 17 00:01:07,730 --> 00:01:05,159 Stein committee report recommending 18 00:01:10,340 --> 00:01:07,740 using liquid hydrogen for upper stages 19 00:01:16,520 --> 00:01:10,350 and we knew at that point we were headed 20 00:01:21,860 --> 00:01:19,610 there was something new all the time it 21 00:01:25,850 --> 00:01:21,870 was exciting 22 00:01:28,100 --> 00:01:25,860 the hardware was involved ABMA ABMA 23 00:01:34,039 --> 00:01:28,110 beforehand and then nasa after it was 24 00:01:40,430 --> 00:01:36,950 I got involved with the Saturn program 25 00:01:45,140 --> 00:01:40,440 when I joined the Saturn Systems office 26 00:01:49,430 --> 00:01:45,150 and and and stayed with it until I left 27 00:01:52,850 --> 00:01:49,440 in 1965 to go to MIT on a Sloan 28 00:01:58,430 --> 00:01:52,860 fellowship but during that time we 29 00:02:01,790 --> 00:01:58,440 worked on procurement packages I helped 30 00:02:05,570 --> 00:02:01,800 write the model specifications for the 31 00:02:08,660 --> 00:02:05,580 s4 stage than the s2 stage that led to a 32 00:02:11,390 --> 00:02:08,670 bidders conference and I was surprised 33 00:02:14,000 --> 00:02:11,400 at the end of the bidders conference my 34 00:02:21,380 --> 00:02:14,010 boss target announced that I would be 35 00:02:28,440 --> 00:02:23,610 well it was the first high 36 00:02:31,320 --> 00:02:28,450 in stage that NASA have entered into we 37 00:02:35,940 --> 00:02:31,330 had a procurement process after writing 38 00:02:39,509 --> 00:02:35,950 the model spec Douglas in Santa Monica 39 00:02:42,869 --> 00:02:39,519 won the contract though we had 40 00:02:45,210 --> 00:02:42,879 immediately after that the announcement 41 00:02:48,650 --> 00:02:45,220 that Douglas got the award we had a 42 00:02:51,270 --> 00:02:48,660 group of over 50 people from Marshall 43 00:02:56,250 --> 00:02:51,280 actually at the time it was a VM a it 44 00:02:59,550 --> 00:02:56,260 was in 59 what we went out to see the 45 00:03:02,000 --> 00:02:59,560 contractor facilities and and meeting 46 00:03:07,220 --> 00:03:02,010 the people that it was a real exciting 47 00:03:11,600 --> 00:03:07,230 trip out there and we saw a firsthand 48 00:03:14,369 --> 00:03:11,610 the what was going on in in the airforce 49 00:03:15,990 --> 00:03:14,379 contractor side of the house here 50 00:03:20,150 --> 00:03:16,000 locally we were involved with Chrysler 51 00:03:24,000 --> 00:03:20,160 and and Jupiter missile redstone missile 52 00:03:28,230 --> 00:03:24,010 so it was it was a it was a new event 53 00:03:34,260 --> 00:03:31,560 hydrogen liquid hydrogen and then it 54 00:03:38,370 --> 00:03:34,270 gets gaseous in a hurry because it's a 55 00:03:40,560 --> 00:03:38,380 it's at minus 423 degrees F it's very 56 00:03:44,670 --> 00:03:40,570 volatile it'll it'll the gas will go 57 00:03:46,890 --> 00:03:44,680 through anything the finest crack it and 58 00:03:49,800 --> 00:03:46,900 it was considered dangerous 59 00:03:53,280 --> 00:03:49,810 but convair out on the west coast had 60 00:03:57,780 --> 00:03:53,290 been working with a center stage with 61 00:04:00,540 --> 00:03:57,790 using the rl10 engine and they were 62 00:04:04,770 --> 00:04:00,550 having some successes but they had a lot 63 00:04:09,060 --> 00:04:04,780 of leaks well somehow or other and in 64 00:04:12,810 --> 00:04:09,070 our development of the s4 stage by 65 00:04:14,910 --> 00:04:12,820 Douglas we didn't have a lot of leaks it 66 00:04:18,900 --> 00:04:14,920 was pretty well contained but it was 67 00:04:24,360 --> 00:04:18,910 still volatile and you could start a 68 00:04:34,560 --> 00:04:29,730 s4 was the the first hydrogen stage that 69 00:04:40,500 --> 00:04:34,570 we had and the Saturn 5 came along 70 00:04:43,980 --> 00:04:40,510 during between 1960 and 1962 the the c5 71 00:04:46,980 --> 00:04:43,990 configuration was developed during that 72 00:04:50,280 --> 00:04:46,990 period it was decided that we're gonna 73 00:04:54,260 --> 00:04:50,290 have a third stage like the s4 but it 74 00:04:57,540 --> 00:04:54,270 had to have one j2 engine have a higher 75 00:04:59,430 --> 00:04:57,550 loading and have a lot of different 76 00:05:02,370 --> 00:04:59,440 different functions it was a natural 77 00:05:05,190 --> 00:05:02,380 choice for NASA to just say sole-source 78 00:05:08,190 --> 00:05:05,200 the s4 be because the experience that 79 00:05:11,790 --> 00:05:08,200 Douglas had in with the s4 I got 80 00:05:15,090 --> 00:05:11,800 involved with the s4 in the s2 with the 81 00:05:18,330 --> 00:05:15,100 source evaluation board which itself was 82 00:05:22,219 --> 00:05:18,340 an exciting thing it was man by Wernher 83 00:05:24,659 --> 00:05:22,229 von Braun Everhart Reis Willi motsek 84 00:05:30,090 --> 00:05:24,669 headquarters procurement people top 85 00:05:33,750 --> 00:05:30,100 level so there I was them I've I've kid 86 00:05:37,469 --> 00:05:33,760 about 33 at the time I think and I was 87 00:05:41,940 --> 00:05:37,479 hearing these guys talk about the 88 00:05:45,300 --> 00:05:41,950 contractors the capabilities and and and 89 00:05:48,990 --> 00:05:45,310 how we were going to distinguish which 90 00:05:51,420 --> 00:05:49,000 one was the better contractor to select 91 00:05:54,629 --> 00:05:51,430 and then recommendation was made to the 92 00:06:00,019 --> 00:05:54,639 NASA Administrator and choices were made 93 00:06:04,069 --> 00:06:01,969 well one of the criteria was that we 94 00:06:06,739 --> 00:06:04,079 make the interfaces between the stages 95 00:06:10,579 --> 00:06:06,749 simple and the only interfaces your 96 00:06:14,059 --> 00:06:10,589 structural tie downs and electronic 97 00:06:17,449 --> 00:06:14,069 commands from a guidance system to the 98 00:06:19,429 --> 00:06:17,459 engines for gambling for separation so 99 00:06:24,279 --> 00:06:19,439 the the the interfaces were relatively 100 00:06:27,169 --> 00:06:24,289 simple and that was I think made made 101 00:06:33,770 --> 00:06:27,179 integrating stages from different 102 00:06:41,290 --> 00:06:37,370 the s2 started out with the procurement 103 00:06:47,180 --> 00:06:41,300 packet package and I think it was 1960 104 00:06:50,360 --> 00:06:47,190 and no 61 and the selection was made but 105 00:06:54,790 --> 00:06:50,370 this was a year or two years that I 106 00:06:57,110 --> 00:06:54,800 guess two years before the the final c5 107 00:07:00,020 --> 00:06:57,120 Saturn five configuration was 108 00:07:02,660 --> 00:07:00,030 established so North American was 109 00:07:06,050 --> 00:07:02,670 selected I got to be acting program 110 00:07:10,160 --> 00:07:06,060 manager our project manager had to go 111 00:07:11,990 --> 00:07:10,170 ahead for a c3 configuration at that 112 00:07:15,980 --> 00:07:12,000 time knowing that we were going to 113 00:07:17,720 --> 00:07:15,990 evolve into the something bigger but the 114 00:07:19,880 --> 00:07:17,730 government wanted to get the contractor 115 00:07:23,450 --> 00:07:19,890 on board so he could have an advantage 116 00:07:28,940 --> 00:07:23,460 of the preliminary design in fact he 117 00:07:34,370 --> 00:07:28,950 helped NASA with ideas on on the Saturn 118 00:07:37,909 --> 00:07:34,380 5 configuration the Apollo program oddly 119 00:07:42,070 --> 00:07:37,919 enough was selected and given to North 120 00:07:45,950 --> 00:07:42,080 American Aviation as an ID at Downey 121 00:07:49,370 --> 00:07:45,960 about two months after the s2 was 122 00:07:52,130 --> 00:07:49,380 selected and we were all really aghast 123 00:07:56,020 --> 00:07:52,140 at that how can the government put two 124 00:08:00,920 --> 00:07:56,030 huge contractors contracts into into one 125 00:08:03,200 --> 00:08:00,930 contractor shop but it happened during 126 00:08:09,140 --> 00:08:03,210 the ensuing period that period leading 127 00:08:11,450 --> 00:08:09,150 up to the fall of 62 both contractors 128 00:08:13,940 --> 00:08:11,460 did a lot of preliminary design leading 129 00:08:16,810 --> 00:08:13,950 up to the Saturn 5 configuration it's 130 00:08:23,110 --> 00:08:16,820 this contractor that's an ID and Downey 131 00:08:26,840 --> 00:08:23,120 was harboring two major contractors 132 00:08:29,060 --> 00:08:26,850 within within a half a mile radius it 133 00:08:33,200 --> 00:08:29,070 was it was her and I was out there for a 134 00:08:36,290 --> 00:08:33,210 year after well well it was in 62 fall 135 00:08:39,529 --> 00:08:36,300 of 62 I went out for a year and I got a 136 00:08:44,300 --> 00:08:39,539 feel for the they not the confusion but 137 00:08:47,450 --> 00:08:44,310 the constraints that were involved in 138 00:08:51,080 --> 00:08:47,460 and in getting worked 139 00:08:53,240 --> 00:08:51,090 done by the contractor and it was pretty 140 00:08:54,380 --> 00:08:53,250 obvious that a lot of things were were 141 00:08:59,660 --> 00:08:54,390 slipping 142 00:09:02,230 --> 00:08:59,670 well the contracts proceeded from that 143 00:09:08,300 --> 00:09:02,240 point 62 and they were given to go ahead 144 00:09:12,710 --> 00:09:08,310 until 64 and progress was being made but 145 00:09:14,960 --> 00:09:12,720 it was slow and the schedule was 146 00:09:18,410 --> 00:09:14,970 obviously slipping costs were going up 147 00:09:21,680 --> 00:09:18,420 and these were cost plus fixed fee 148 00:09:24,620 --> 00:09:21,690 contracts so the contractor did what he 149 00:09:29,120 --> 00:09:24,630 had to do to get to meet the model spec 150 00:09:34,570 --> 00:09:29,130 requirements it was a it was a strange 151 00:09:38,200 --> 00:09:34,580 period and and during that period s to 152 00:09:42,830 --> 00:09:38,210 seal Beach facility had been constructed 153 00:09:45,800 --> 00:09:42,840 and and they had started building the s2 154 00:09:47,960 --> 00:09:45,810 bulkhead as well as the the other 155 00:09:52,430 --> 00:09:47,970 components that make up the tank when I 156 00:09:56,840 --> 00:09:52,440 left the program in 65 we had just 157 00:09:59,870 --> 00:09:56,850 completed or a quasi CDR it wasn't the 158 00:10:02,690 --> 00:09:59,880 kind of CDR as we've had since then but 159 00:10:06,620 --> 00:10:02,700 we accepted it because we wanted to get 160 00:10:09,710 --> 00:10:06,630 on with a program and other than the 161 00:10:14,680 --> 00:10:09,720 problems with having so many so much 162 00:10:18,050 --> 00:10:14,690 work done in one shop and the delays 163 00:10:20,300 --> 00:10:18,060 work work was it was really accomplished 164 00:10:24,710 --> 00:10:20,310 and by the way when I first got out 165 00:10:26,750 --> 00:10:24,720 there in 62 the contractor was cleanly 166 00:10:29,980 --> 00:10:26,760 aware of the problem and he suggested 167 00:10:33,050 --> 00:10:29,990 that the s2 be transferred for 168 00:10:38,090 --> 00:10:33,060 development in Tulsa they had a facility 169 00:10:41,240 --> 00:10:38,100 in Tulsa so immediately my boss Oswald 170 00:10:44,660 --> 00:10:41,250 longa took umbrage with that that to 171 00:10:48,440 --> 00:10:44,670 have the s2 selected on the basis of 172 00:10:50,810 --> 00:10:48,450 development in Los Angeles with the Seal 173 00:10:53,690 --> 00:10:50,820 Beach facility being built just strictly 174 00:10:56,360 --> 00:10:53,700 for the s2 it was unconscionable to move 175 00:11:00,470 --> 00:10:56,370 the s2 down there well a compromise was 176 00:11:01,200 --> 00:11:00,480 made we decided that I'll call it 177 00:11:03,270 --> 00:11:01,210 dumpster 178 00:11:05,640 --> 00:11:03,280 there's structures that don't have a lot 179 00:11:08,160 --> 00:11:05,650 of complicated electronics could be 180 00:11:10,650 --> 00:11:08,170 shipped or sent down there for design 181 00:11:14,070 --> 00:11:10,660 and manufacture these are the inter 182 00:11:16,470 --> 00:11:14,080 stages the thrust structure but as far 183 00:11:18,060 --> 00:11:16,480 as the cryogenic tanks they had to be 184 00:11:21,360 --> 00:11:18,070 kept and there the design and 185 00:11:23,790 --> 00:11:21,370 development had to be kept in in County 186 00:11:26,160 --> 00:11:23,800 in Los Angeles Seal Beach well we could 187 00:11:30,750 --> 00:11:26,170 observe the fact that they were making 188 00:11:33,500 --> 00:11:30,760 progress in design it was slow and the 189 00:11:36,210 --> 00:11:33,510 crunch didn't come until the 190 00:11:38,790 --> 00:11:36,220 manufacturing of the common bulkhead 191 00:11:44,130 --> 00:11:38,800 started and that was a difficult job in 192 00:11:46,670 --> 00:11:44,140 19 1964 general Sam Phillips who was 193 00:11:50,130 --> 00:11:46,680 headquarters head of the Apollo program 194 00:11:52,470 --> 00:11:50,140 was aware of the schedule slips that 195 00:11:56,550 --> 00:11:52,480 were impending they increased cost and 196 00:12:00,270 --> 00:11:56,560 he initiated a bunch of tiger teams we 197 00:12:03,350 --> 00:12:00,280 came out to Downey and we spent the 198 00:12:06,800 --> 00:12:03,360 better part of a month reviewing 199 00:12:09,870 --> 00:12:06,810 intimate details and and and 200 00:12:13,580 --> 00:12:09,880 organizations as well as design and 201 00:12:17,640 --> 00:12:13,590 development of the s2 and it was also 202 00:12:21,030 --> 00:12:17,650 being the Apollo spacecraft was also a 203 00:12:23,880 --> 00:12:21,040 part of that review small disciplinary 204 00:12:26,490 --> 00:12:23,890 teams would literally invade the 205 00:12:32,600 --> 00:12:26,500 contractor and evaluate the progress 206 00:12:36,810 --> 00:12:32,610 that effort in 65 ended up with a 207 00:12:42,410 --> 00:12:36,820 major-general Sam Phillips and George 208 00:12:47,370 --> 00:12:42,420 Muller to write a letter to the head of 209 00:12:51,090 --> 00:12:47,380 North American the result was the 210 00:12:53,550 --> 00:12:51,100 contractor assigned a new guy to head up 211 00:12:55,880 --> 00:12:53,560 the s2 program Heatley assigned a new 212 00:13:01,010 --> 00:12:55,890 guy to head up the Apollo program and 213 00:13:03,690 --> 00:13:01,020 and in progress well we had progress 214 00:13:06,240 --> 00:13:03,700 from then on but it was still extremely 215 00:13:11,740 --> 00:13:06,250 difficult really for the rest all most 216 00:13:19,360 --> 00:13:16,000 he was like a fighter pilot like John 217 00:13:22,840 --> 00:13:19,370 McCain he he news business 218 00:13:25,510 --> 00:13:22,850 he early on during World War two he and 219 00:13:28,650 --> 00:13:25,520 Bob Gilruth who headed up the Apollo 220 00:13:32,470 --> 00:13:28,660 program at Langley had solved a problem 221 00:13:38,650 --> 00:13:32,480 on the p-51 it was an air scoop problem 222 00:13:40,870 --> 00:13:38,660 and that that relationship I guess might 223 00:13:43,660 --> 00:13:40,880 have helped the getting the Apollo 224 00:13:46,390 --> 00:13:43,670 program assigned to him he was a unique 225 00:13:52,060 --> 00:13:46,400 guy and we had several meetings with him 226 00:13:57,610 --> 00:13:52,070 and he was solicitous help answered our 227 00:14:05,030 --> 00:13:57,620 questions and and sharp technically and 228 00:14:11,810 --> 00:14:09,230 well we were in that period in 68 64 and 229 00:14:17,360 --> 00:14:11,820 65 when Sam Phillips is known as his 230 00:14:20,750 --> 00:14:17,370 work with the review teams and and NASA 231 00:14:24,650 --> 00:14:20,760 had and announced the possibility an 232 00:14:27,379 --> 00:14:24,660 opportunity for to get a nomination of 233 00:14:30,230 --> 00:14:27,389 people who would go to MIT on Sloan 234 00:14:32,210 --> 00:14:30,240 program and I volunteered well I had to 235 00:14:34,490 --> 00:14:32,220 make the application I went through 236 00:14:38,439 --> 00:14:34,500 interviews with the head of the program 237 00:14:44,569 --> 00:14:38,449 at MIT and eventually I got selected 238 00:14:47,420 --> 00:14:44,579 well that was a an inflection point of 239 00:14:53,509 --> 00:14:47,430 the program the following Sam Phillips 240 00:14:55,730 --> 00:14:53,519 initial operation out there and I I was 241 00:14:59,689 --> 00:14:55,740 given an opportunity to either stay on 242 00:15:02,389 --> 00:14:59,699 the s2 or or go to MIT well I wasn't 243 00:15:07,009 --> 00:15:02,399 gonna miss that opportunity while I was 244 00:15:10,610 --> 00:15:07,019 gone I read in the newspaper events that 245 00:15:14,360 --> 00:15:10,620 occurred of the s2 program one of which 246 00:15:18,769 --> 00:15:14,370 was the destruction of the structural 247 00:15:22,220 --> 00:15:18,779 test vehicle at Seal Beach for me being 248 00:15:23,809 --> 00:15:22,230 up in Massachusetts it was a shock but I 249 00:15:25,990 --> 00:15:23,819 could do nothing about it other than 250 00:15:28,460 --> 00:15:26,000 just absorb the fact that it happened 251 00:15:31,009 --> 00:15:28,470 but I learned more about it when I got 252 00:15:34,939 --> 00:15:31,019 back there a year later the accident 253 00:15:36,410 --> 00:15:34,949 occurred the the the the tank broke had 254 00:15:38,660 --> 00:15:36,420 water in there to simulate the 255 00:15:41,620 --> 00:15:38,670 propellant loads and of course there 256 00:15:45,170 --> 00:15:41,630 were actuators to apply loads to it and 257 00:15:49,639 --> 00:15:45,180 the tank broke at one hundred and forty 258 00:15:53,650 --> 00:15:49,649 four percent of the load the design 259 00:15:58,790 --> 00:15:53,660 requirement was one point for which the 260 00:16:02,800 --> 00:15:58,800 difference between that was negligible 261 00:16:06,170 --> 00:16:02,810 and the test was evaluated as being 262 00:16:09,559 --> 00:16:06,180 acceptable even in spite of the failure 263 00:16:14,269 --> 00:16:09,569 and it demonstrated that the s2 tank was 264 00:16:21,130 --> 00:16:14,279 extremely efficient but it was getting 265 00:16:29,840 --> 00:16:25,280 it was tremendous pressure and 266 00:16:32,840 --> 00:16:29,850 excitement to do to get things done you 267 00:16:35,660 --> 00:16:32,850 could hardly talk too long to people 268 00:16:40,450 --> 00:16:35,670 about like I wanted to know what 269 00:16:43,460 --> 00:16:40,460 happened and everybody was too busy 270 00:16:48,530 --> 00:16:43,470 trying to get the ahead of the schedule 271 00:16:53,030 --> 00:16:48,540 and and get to get the project on track 272 00:16:58,519 --> 00:16:53,040 it was a rather more than exciting 273 00:17:11,029 --> 00:17:02,930 one of the other problems that s2 faced 274 00:17:13,399 --> 00:17:11,039 was the lunar lander program grumman was 275 00:17:14,510 --> 00:17:13,409 overweight and there was nothing that 276 00:17:19,429 --> 00:17:14,520 could be done about it 277 00:17:21,439 --> 00:17:19,439 so s2 is selected to take weight out of 278 00:17:25,069 --> 00:17:21,449 the structure in order to increase or 279 00:17:30,500 --> 00:17:25,079 allow the added weight in the lunar 280 00:17:32,630 --> 00:17:30,510 module well in doing so they would go 281 00:17:36,140 --> 00:17:32,640 from one vehicle to another one 282 00:17:39,440 --> 00:17:36,150 redesigned just to squeeze out weight in 283 00:17:42,440 --> 00:17:39,450 fact an example in an extreme example 284 00:17:44,480 --> 00:17:42,450 was one of the sections of the common 285 00:17:49,510 --> 00:17:44,490 buck the upper facing that faced the 286 00:17:53,960 --> 00:17:49,520 hydrogen tank the hydrogen material that 287 00:17:57,649 --> 00:17:53,970 thickness was about 25 thousandths on on 288 00:17:59,539 --> 00:17:57,659 one section plus a minus five well that 289 00:18:01,279 --> 00:17:59,549 material started out about a hundred and 290 00:18:04,210 --> 00:18:01,289 twenty-five thousandths the upper the 291 00:18:07,070 --> 00:18:04,220 upper bulkhead on the common bulkhead 292 00:18:09,020 --> 00:18:07,080 and they had to have lands about the 293 00:18:12,200 --> 00:18:09,030 thickness of that material about a 294 00:18:15,740 --> 00:18:12,210 hundred twenty-five thousand so they 295 00:18:19,220 --> 00:18:15,750 went to chemical mill operation where 296 00:18:22,760 --> 00:18:19,230 you take a caustic solution and the 297 00:18:24,980 --> 00:18:22,770 leach out the material very carefully to 298 00:18:27,430 --> 00:18:24,990 get it down to the the dimension that 299 00:18:31,010 --> 00:18:27,440 you want like the twenty five thousands 300 00:18:34,010 --> 00:18:31,020 that is an extreme of how they saved 301 00:18:36,710 --> 00:18:34,020 weight on the s2 it was a critical 302 00:18:39,350 --> 00:18:36,720 operation and it was done very carefully 303 00:18:44,090 --> 00:18:39,360 from stage to stage and as the program 304 00:18:48,289 --> 00:18:44,100 developed s2 was able to he got a little 305 00:18:50,270 --> 00:18:48,299 more weight each time and fortunately we 306 00:18:52,340 --> 00:18:50,280 had no problems with the common bulkhead 307 00:18:58,700 --> 00:18:52,350 other than learning how to make it and 308 00:19:06,019 --> 00:19:02,149 the combat bulkhead initially started on 309 00:19:08,960 --> 00:19:06,029 the s4 stage and it was a spheric 310 00:19:13,340 --> 00:19:08,970 spherical a hemispherical rather it was 311 00:19:16,340 --> 00:19:13,350 just to clamshells good with a phenolic 312 00:19:18,890 --> 00:19:16,350 : comb interface in between them the 313 00:19:21,940 --> 00:19:18,900 sandwich so to speak bonded together a 314 00:19:25,399 --> 00:19:21,950 rigid struck a very rigid structure so 315 00:19:28,600 --> 00:19:25,409 the common bulkhead was initially 316 00:19:32,380 --> 00:19:28,610 started by Douglas in the case of the s2 317 00:19:38,899 --> 00:19:32,390 north american proposed a half ellipsoid 318 00:19:42,649 --> 00:19:38,909 shape so that the the height of the dork 319 00:19:45,590 --> 00:19:42,659 head was shorter and of course the s2 is 320 00:19:49,539 --> 00:19:45,600 33 feet in diameter and that bulkhead 321 00:19:53,389 --> 00:19:49,549 had to be carefully this kind for 322 00:19:55,909 --> 00:19:53,399 tolerances to made up with the hydrogen 323 00:19:58,610 --> 00:19:55,919 tank above it and the and the oxygen 324 00:20:01,279 --> 00:19:58,620 tank below it there was the interface 325 00:20:04,100 --> 00:20:01,289 between that those two proponents of 326 00:20:08,990 --> 00:20:04,110 course thermally there's no problem 327 00:20:13,210 --> 00:20:09,000 one was minus 423 and the other - 296 328 00:20:17,419 --> 00:20:13,220 about 26 degrees difference but it was 329 00:20:24,150 --> 00:20:17,429 critical if it broke the whole whole 330 00:20:33,090 --> 00:20:28,230 in terms of time it was all crunch time 331 00:20:36,870 --> 00:20:33,100 in 1965 we felt we had completed the 332 00:20:41,159 --> 00:20:36,880 design the contractor had built a common 333 00:20:44,789 --> 00:20:41,169 bulkhead he had built the stage at Seal 334 00:20:47,430 --> 00:20:44,799 Beach the first one well the first one 335 00:20:51,240 --> 00:20:47,440 off the line was asked to structural 336 00:20:55,590 --> 00:20:51,250 vehicle as to s and that failed the next 337 00:20:58,470 --> 00:20:55,600 one off the line was the dynamic stage 338 00:21:02,909 --> 00:20:58,480 and then the all systems vehicle the all 339 00:21:06,060 --> 00:21:02,919 systems vehicle was a a flight type the 340 00:21:08,279 --> 00:21:06,070 first item off the line that was to be 341 00:21:10,740 --> 00:21:08,289 flight design because of all the 342 00:21:13,220 --> 00:21:10,750 problems that were reviewed in the 343 00:21:17,149 --> 00:21:13,230 Apollo program and particularly the s2 344 00:21:22,380 --> 00:21:17,159 it was decided a rather major decision 345 00:21:27,840 --> 00:21:22,390 to have the MTF in fact the it was 346 00:21:31,919 --> 00:21:27,850 started back in 63 naa was directed in I 347 00:21:35,299 --> 00:21:31,929 guess it was January of 65 that the all 348 00:21:38,399 --> 00:21:35,309 systems vehicle would not be tested in 349 00:21:43,169 --> 00:21:38,409 San Santa Susana it would be shipped 350 00:21:44,760 --> 00:21:43,179 down to MTF all the subsequent flight 351 00:21:47,310 --> 00:21:44,770 articles would also go down there for 352 00:21:50,060 --> 00:21:47,320 being tested this was a major change 353 00:21:53,669 --> 00:21:50,070 from what was originally planned and and 354 00:21:56,250 --> 00:21:53,679 it was a it was quite an inflection in 355 00:22:02,279 --> 00:21:56,260 the program but it was it was intended 356 00:22:06,029 --> 00:22:02,289 to save it cost have the testing done at 357 00:22:07,980 --> 00:22:06,039 a NASA facility that was that was the 358 00:22:11,669 --> 00:22:07,990 first inflection in the program that 359 00:22:16,200 --> 00:22:11,679 direction and then at the same time we 360 00:22:20,210 --> 00:22:16,210 had Sam Phillips reviews and all this 361 00:22:22,380 --> 00:22:20,220 time hardware was being built the SS 2 362 00:22:25,640 --> 00:22:22,390 asked the structural vehicle was 363 00:22:30,390 --> 00:22:25,650 completed and tested and and destroyed 364 00:22:33,270 --> 00:22:30,400 the all systems test vehicle the first 365 00:22:36,810 --> 00:22:33,280 flight type off the line to be tested 366 00:22:37,529 --> 00:22:36,820 was in process and being built in fact 367 00:22:40,859 --> 00:22:37,539 it 368 00:22:50,849 --> 00:22:40,869 was delivered in the summer of 65 down 369 00:22:56,060 --> 00:22:50,859 to MTF but by May in 1966 it blew up at 370 00:23:00,029 --> 00:22:56,070 MTF but it was it was not a an accident 371 00:23:03,659 --> 00:23:00,039 involving cryogens it was it happened at 372 00:23:08,249 --> 00:23:03,669 night somebody on the on the first shift 373 00:23:11,159 --> 00:23:08,259 had left some vowels and switches in the 374 00:23:15,539 --> 00:23:11,169 wrong position or in a position that and 375 00:23:18,269 --> 00:23:15,549 and the night crew had not been notified 376 00:23:21,739 --> 00:23:18,279 or didn't get the word and they over 377 00:23:26,849 --> 00:23:21,749 pressurized the hydrogen tank with 378 00:23:28,950 --> 00:23:26,859 gaseous helium and it blew but the 379 00:23:31,769 --> 00:23:28,960 saving grace there was the time that it 380 00:23:34,499 --> 00:23:31,779 had spent down at MTF they had run a 381 00:23:38,009 --> 00:23:34,509 number of short duration runs with with 382 00:23:42,570 --> 00:23:38,019 the oil systems vehicle and about a week 383 00:23:45,839 --> 00:23:42,580 before it blew up at night they had run 384 00:23:49,849 --> 00:23:45,849 a full duration test on the s2 there was 385 00:23:54,509 --> 00:23:49,859 some confidence there that it would work 386 00:23:57,330 --> 00:23:54,519 but again you lose a stage you lose a 387 00:24:00,629 --> 00:23:57,340 lot of testing that you you want to get 388 00:24:02,669 --> 00:24:00,639 information from so the next item to be 389 00:24:06,269 --> 00:24:02,679 tested as MTF was the first flight 390 00:24:09,419 --> 00:24:06,279 article s tube one and fortunately it 391 00:24:12,930 --> 00:24:09,429 went through the preliminary tests and 392 00:24:18,899 --> 00:24:12,940 the final full duration and will ship 393 00:24:27,570 --> 00:24:23,100 the s4 and the s4b stages and internal 394 00:24:31,889 --> 00:24:27,580 insulation its construction had they 395 00:24:35,129 --> 00:24:31,899 made waffle hog outs cutouts on the 396 00:24:40,769 --> 00:24:35,139 inside of the the tanks that was it was 397 00:24:42,810 --> 00:24:40,779 an exact follow up of what Douglas had 398 00:24:45,810 --> 00:24:42,820 done with the Thor vehicle how they 399 00:24:50,669 --> 00:24:45,820 built the this structure so they had 400 00:24:53,249 --> 00:24:50,679 these pockets in the inside about an 401 00:24:55,110 --> 00:24:53,259 inch deep and they put insulation in 402 00:24:57,720 --> 00:24:55,120 there and then they covered all these 403 00:25:01,080 --> 00:24:57,730 pockets with a with a with a membrane 404 00:25:03,389 --> 00:25:01,090 and and unmonitored and the idea was 405 00:25:07,560 --> 00:25:03,399 that liquid hydrogen on the inside of 406 00:25:09,960 --> 00:25:07,570 the tank would clearly penetrate that 407 00:25:12,509 --> 00:25:09,970 because hydrogen will go through almost 408 00:25:14,549 --> 00:25:12,519 anything it's most correct and the 409 00:25:17,840 --> 00:25:14,559 theory was that in that space where they 410 00:25:21,629 --> 00:25:17,850 had this insulation you'd have two-phase 411 00:25:24,149 --> 00:25:21,639 hydrogen close to the outer skin it 412 00:25:26,820 --> 00:25:24,159 would definitely be gas close to the 413 00:25:30,779 --> 00:25:26,830 inside of the membrane that separated 414 00:25:32,850 --> 00:25:30,789 the or the the space in between the 415 00:25:36,480 --> 00:25:32,860 where they had the foam it would be a 416 00:25:39,210 --> 00:25:36,490 two-phase with liquid on the inside and 417 00:25:42,830 --> 00:25:39,220 gas on the outside it was it was a 418 00:25:46,619 --> 00:25:42,840 rather rudimentary my method of 419 00:25:50,070 --> 00:25:46,629 insulating hydrogen but that was the 420 00:25:52,470 --> 00:25:50,080 Douglass proposal well s2 came along and 421 00:25:56,700 --> 00:25:52,480 they decided going to have external 422 00:26:02,639 --> 00:25:56,710 insulation and their plan was to make 423 00:26:04,529 --> 00:26:02,649 panels of similar material of a foam and 424 00:26:06,320 --> 00:26:04,539 it would be bonded to the outside of the 425 00:26:10,919 --> 00:26:06,330 tank and then covered with a membrane 426 00:26:11,279 --> 00:26:10,929 and the idea there again was inside the 427 00:26:15,299 --> 00:26:11,289 tank 428 00:26:19,820 --> 00:26:15,309 you had liquid hydrogen at minus 423 the 429 00:26:26,029 --> 00:26:19,830 design for the s2 was to purge that 430 00:26:30,629 --> 00:26:26,039 those panels with which had well 431 00:26:32,560 --> 00:26:30,639 honeycomb that was perforated so that 432 00:26:35,080 --> 00:26:32,570 the hydrogen gas 433 00:26:37,450 --> 00:26:35,090 flow up through it and the idea there 434 00:26:40,570 --> 00:26:37,460 was like similar to what Douglas had on 435 00:26:44,919 --> 00:26:40,580 the inside by the outside of the skin 436 00:26:49,210 --> 00:26:44,929 tank it was minus 23 for 23 outside 437 00:26:50,799 --> 00:26:49,220 these one-and-a-half inch panels you you 438 00:26:53,049 --> 00:26:50,809 didn't have atmosphere air on the 439 00:26:57,430 --> 00:26:53,059 outside and of course it would be cold 440 00:26:59,680 --> 00:26:57,440 but you wouldn't have minus 423 on the 441 00:27:03,519 --> 00:26:59,690 outside but it would be cold enough that 442 00:27:05,950 --> 00:27:03,529 the atmosphere would Frost up on the 443 00:27:08,799 --> 00:27:05,960 outside of the tank well it was a more 444 00:27:11,320 --> 00:27:08,809 efficient thermal design and the reason 445 00:27:14,619 --> 00:27:11,330 they did it was because the aluminum 446 00:27:16,240 --> 00:27:14,629 alloy that was used in the tanks both in 447 00:27:22,899 --> 00:27:16,250 the s4b 448 00:27:28,060 --> 00:27:22,909 and in the s2 was 2014 t6 alloy and at 449 00:27:30,399 --> 00:27:28,070 minus 423 it was a lot stronger it was 450 00:27:33,419 --> 00:27:30,409 it reached its maximum strength and and 451 00:27:39,720 --> 00:27:33,429 the higher strength you can calculate 452 00:27:45,749 --> 00:27:39,730 the less material you needed for for the 453 00:27:48,999 --> 00:27:45,759 design of the skin and it was a very 454 00:27:52,149 --> 00:27:49,009 very efficient structurally as long as 455 00:27:57,340 --> 00:27:52,159 the material was four minus four it was 456 00:28:01,899 --> 00:27:57,350 was hydrogen temperatures but on the s4 457 00:28:03,580 --> 00:28:01,909 be that skin was not that cold so it was 458 00:28:05,769 --> 00:28:03,590 a less less efficient structure 459 00:28:10,289 --> 00:28:05,779 insulation for the SUV evolved from 460 00:28:12,999 --> 00:28:10,299 these panels to foam they found out that 461 00:28:16,690 --> 00:28:13,009 when these panels fell off a cook way of 462 00:28:18,999 --> 00:28:16,700 fixing was to use spray-on foam and they 463 00:28:22,330 --> 00:28:19,009 were coming off every time you you fill 464 00:28:26,409 --> 00:28:22,340 the tank and empty the tank doing prior 465 00:28:29,499 --> 00:28:26,419 launch pre launch operations and it was 466 00:28:32,289 --> 00:28:29,509 later used on the e tank and then the 467 00:28:39,850 --> 00:28:32,299 and the later stages that were launched 468 00:28:46,149 --> 00:28:43,180 well my wife and I went down to the cave 469 00:28:48,370 --> 00:28:46,159 for seven months to get the Skylab ready 470 00:28:51,370 --> 00:28:48,380 for launch and during that period the 471 00:28:54,789 --> 00:28:51,380 next to the last flight I think it was 472 00:28:56,350 --> 00:28:54,799 the 17th flight it was it was a night 473 00:28:59,200 --> 00:28:56,360 flight it was in fact it was the only 474 00:29:03,370 --> 00:28:59,210 night flight and while we were building 475 00:29:07,870 --> 00:29:03,380 up the Skylab in the VAB it was being 476 00:29:10,169 --> 00:29:07,880 prepared and we we got our passes to go 477 00:29:17,740 --> 00:29:10,179 out to see it and we got out on the 478 00:29:22,110 --> 00:29:17,750 highway adjacent to the the a B my wife 479 00:29:24,970 --> 00:29:22,120 my daughter her husband and we just 480 00:29:27,580 --> 00:29:24,980 enjoyed seeing it all that fire that 481 00:29:29,710 --> 00:29:27,590 would I might I might launch is 482 00:29:33,759 --> 00:29:29,720 something else you have all this fire 483 00:29:37,590 --> 00:29:33,769 the whole sky lights up so it was it was 484 00:29:40,269 --> 00:29:37,600 an exciting time but then after I guess 485 00:29:42,460 --> 00:29:40,279 five six months later we launched the 486 00:29:49,400 --> 00:29:42,470 Skylab and had some problems with it 487 00:29:54,950 --> 00:29:52,250 or a number of concepts that were 488 00:29:57,020 --> 00:29:54,960 brought up the first one 489 00:30:00,710 --> 00:29:57,030 the initial idea and it really started 490 00:30:01,850 --> 00:30:00,720 before I got there was get man in space 491 00:30:05,810 --> 00:30:01,860 how do we do it 492 00:30:09,830 --> 00:30:05,820 the s4b is going to be in space because 493 00:30:11,960 --> 00:30:09,840 it's your third stage let's make a hatch 494 00:30:13,840 --> 00:30:11,970 that can be opened they actually 495 00:30:16,910 --> 00:30:13,850 designed a hatch at the top of the 496 00:30:19,970 --> 00:30:16,920 hydrogen tank with the idea that maybe a 497 00:30:22,340 --> 00:30:19,980 man in a spacesuit could get into the 498 00:30:24,530 --> 00:30:22,350 high into the tank and and do something 499 00:30:27,410 --> 00:30:24,540 I mean there was a rather primitive idea 500 00:30:31,720 --> 00:30:27,420 but that was one of the first ideas and 501 00:30:34,400 --> 00:30:31,730 quickly discarded but the hatch idea 502 00:30:37,850 --> 00:30:34,410 continued because that was necessary 503 00:30:40,480 --> 00:30:37,860 when we had the full full of Skylab you 504 00:30:43,360 --> 00:30:40,490 had a access to the s4b 505 00:30:46,940 --> 00:30:43,370 hydrogen tank which became actually our 506 00:30:49,670 --> 00:30:46,950 space station to go from the airlock 507 00:30:51,890 --> 00:30:49,680 module into the orbital workshop it was 508 00:30:54,590 --> 00:30:51,900 called then there were other ideas that 509 00:30:58,760 --> 00:30:54,600 one of the prime ideas was the Sun 510 00:31:02,030 --> 00:30:58,770 telescope that became and it was a now 511 00:31:04,760 --> 00:31:02,040 in-house project Marshall did so there 512 00:31:08,420 --> 00:31:04,770 was a lot of effort inside the senator 513 00:31:11,240 --> 00:31:08,430 toward developing that telescope the 514 00:31:14,660 --> 00:31:11,250 interior or the workshop from the time I 515 00:31:17,660 --> 00:31:14,670 got involved until then a lot of ideas 516 00:31:20,690 --> 00:31:17,670 were developed designs produced for the 517 00:31:24,880 --> 00:31:20,700 interior of the orbital workshop we 518 00:31:28,850 --> 00:31:24,890 looked at what the submarine what 519 00:31:30,770 --> 00:31:28,860 submarine life was for people in in a 520 00:31:34,250 --> 00:31:30,780 confined area for a long period of time 521 00:31:37,520 --> 00:31:34,260 we even visited one of the atomic subs 522 00:31:40,220 --> 00:31:37,530 of in San Diego just to see what the 523 00:31:43,360 --> 00:31:40,230 situation was to live in a in a confined 524 00:31:48,320 --> 00:31:43,370 area for in that case was 90 days but 525 00:31:52,220 --> 00:31:48,330 our plans on the Skylab the first 526 00:31:55,130 --> 00:31:52,230 mission was to be 28 days the second 60 527 00:31:58,580 --> 00:31:55,140 days in the third 84 days three 528 00:32:05,520 --> 00:31:58,590 different separate missions so it wasn't 529 00:32:05,530 --> 00:32:08,430 well 530 00:32:13,250 --> 00:32:10,529 a lot of people were contributing ideas 531 00:32:18,149 --> 00:32:13,260 and they said well Raymond Loewy 532 00:32:21,419 --> 00:32:18,159 invented the coke bottle shape and he's 533 00:32:25,710 --> 00:32:21,429 reputed to have invented the the shape 534 00:32:28,860 --> 00:32:25,720 of the early Studebaker that was the 535 00:32:31,409 --> 00:32:28,870 news and and he had a reputation for 536 00:32:36,779 --> 00:32:31,419 designing you he was a rather flamboyant 537 00:32:38,730 --> 00:32:36,789 individual and so that NASA hired him to 538 00:32:42,690 --> 00:32:38,740 come down and look at what we were doing 539 00:32:44,279 --> 00:32:42,700 on Skylab and he spent three or four 540 00:32:47,610 --> 00:32:44,289 days there 541 00:32:48,389 --> 00:32:47,620 I even had a picture taken with his 542 00:32:51,149 --> 00:32:48,399 ideas 543 00:32:55,019 --> 00:32:51,159 we're good and we implemented most of 544 00:32:59,000 --> 00:32:55,029 them such as the interior surfaces of 545 00:33:04,100 --> 00:32:59,010 the workshop were were coated with the 546 00:33:07,320 --> 00:33:04,110 plastic material over insulation and not 547 00:33:10,649 --> 00:33:07,330 that was applied on the inside he wanted 548 00:33:13,620 --> 00:33:10,659 it colored pale yellow to make it a 549 00:33:19,200 --> 00:33:13,630 little more easy on the eyes he gave us 550 00:33:21,570 --> 00:33:19,210 a lot of ideas for wardroom the table in 551 00:33:23,730 --> 00:33:21,580 the middle of the wardroom had 552 00:33:26,279 --> 00:33:23,740 restraints where astronauts could 553 00:33:28,830 --> 00:33:26,289 straddle their restraints ether food 554 00:33:31,889 --> 00:33:28,840 read books whatever water room was a 555 00:33:34,200 --> 00:33:31,899 place to relax and and eat and we even 556 00:33:37,230 --> 00:33:34,210 had a window in there he didn't make a 557 00:33:43,249 --> 00:33:37,240 lot of major changes but he he put on 558 00:33:47,419 --> 00:33:44,630 well 559 00:33:53,019 --> 00:33:47,429 the legacy of the Apollo program to my 560 00:34:00,100 --> 00:33:53,029 mind was that it was a just another 561 00:34:05,330 --> 00:34:00,110 event in human history where individuals 562 00:34:10,790 --> 00:34:05,340 human beings decided to go beyond the 563 00:34:15,589 --> 00:34:10,800 next he'll go over the ocean go to the 564 00:34:19,089 --> 00:34:15,599 moon it was it was an event I think that 565 00:34:25,310 --> 00:34:19,099 it was typical of human the human beings