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Apollo 11 Technical Crew Debriefing, Volume 1 (scan)

NASA via ibiblio · 1969-07-31 · 251 pages · text by OCR

This is Volume 1 of NASA's Apollo 11 Technical Crew Debriefing, dated July 31, 1969. The Mission Operations Branch of the Flight Crew Support Division at the Manned Spacecraft Center in Houston prepared it, and it was originally classified Confidential. In it Armstrong, Aldrin and Collins go phase by phase through suiting, launch, powered flight, Earth orbit and lunar surface activities. They comment on suit fit, vibration, checklists, lunar dust, footing and poor sleeping conditions in the lunar module. A section titled Visual Sightings appears in the table of contents.

  • p. 15 …LIGHTS ARMSTRONG Launch vehicle lights, roll program, pitch program, roll complete were on time, as were…
  • p. 41 …Then, just as in the simulator, the DAP rolled itself out. It ceased its pitch rate…
  • p. 43 …I did have a slight roll misalignment. I knew I had a slight roll misalignment, but…
  • p. 48 …It definitely had a good roll to it moving away. ## CONFIDENTIAL
  • p. 63 …roll angle is unconstrained in that with large trunnion angles, the computer may pick a roll…
  • p. 64 …being furnished to me in regard to roll angles. However, I didn't. That's one…
  • p. 65 …What they meant was that the spacecraft did not have to be rolled in such a…
  • p. 66 …very large, and you have an obvious roll on its alignment in the reticle, then it…
  • p. 79 …We always used 0.3 deg/sec roll and we never tried the 0.1. It…
  • p. 111 …There is a constraint on 2-jet roll, 4-jet roll, and no-jet roll, depending…
  • p. 150 …While flying AOT, you depend on the other crewmember to assure you that the roll gimbal…
  • p. 158 …It was then that I clearly realized that we weren't rolling as fast as was…
  • p. 216 …The part that had been melted, separated, and rolled back or peeled back on the secondary…
  • p. 224 …d know what is inside a certain roll. In many cases, there is nothing in it…
  • p. 227 …When it rolled up, it had a tendency to sneak off to the side and crinkle…
  • p. 247 …Also, I could roll over on one side or on the other. I had the two…
  • p. 248 …more horizontal position or the capability to roll from one side to the other. That's…
# CONFIDENTIAL

ARMSTRONG	Yes. I think that's one of the areas where the simulator probably falls a little short.
COLLINS	In my mind, it's a question of time available. I had so much stuff to learn, and I had divided up the time, and P23 was a relatively small slice of the overall training. I didn't want to really spend the time to sit down and go and hammer this stuff all the way through, although it appears I should have. That's another thing. That state vector was another heartache.
ARMSTRONG	The state vector may have been bad initially but especially when you get two large errors in a row. We incorporated it, and from that point on, the state vector wasn't any good.
COLLINS	That's right. The state vector was mediocre to begin with and it rapidly got worse.
	But each star has its own distinct substellar point, and you take a measurement on two stars in a row. This requires that you maneuver from one substellar point to another. I kept telling those people that before the flight and they kept saying, "Oh no. They're all right close together." I think there's some confusion on their part and maybe some on mine.

## CONFIDENTIAL

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Document, cited by the archive. The PDF is mirrored here; the original link is under it. The text was read from the page images by an OCR model; expect the odd misread word. 251 pages are in the text index: search them above, or from the library's search.