Mine may be a little of a bad question but I have always wondered. How did the Apollo crews access the SM? They had their seats behind them and under them they had the solid heat shield. Also how did they access the LM? They had the panels in front of them. Diagrams and pictures would be very helpful.Sorry if these questions sound kinda dumb.Thanks
I would like to know about the micrometeoroid impact probability and the dangerous physical phenomenons the astronauts where exposed to (cosmic rays, radiation, etc). Lots of people argue that we never went to the moon because of these things... I have no doubt we went to the moon, but would really like to know more about this since I know nothing...
Cosmic rays - crew undoubtedly took doses; effects minimized due to short missions.
I would like to know how the Apollo 11, 12, 14 are similar to Apollo 15, and also how they differ from Apollo 15.
Quote from: Spaceboy7441 on 07/20/2009 02:19 amMine may be a little of a bad question but I have always wondered. How did the Apollo crews access the SM? They had their seats behind them and under them they had the solid heat shield. Also how did they access the LM? They had the panels in front of them. Diagrams and pictures would be very helpful.Sorry if these questions sound kinda dumb.ThanksI know there was 1 or 2 missions where the Command Module Pilot did a space-walk toward the end of the mission and before they separated from the SM, where he retrieved a film magazine and possibly other things but I think it was only on 1 or 2 missions.
I just read that the cabin atmosphere in the Apollo CM was modified from 40% Nitrogen/60% Oxygen at sea level pressure to 100% pure Oxygen at 2 psi after the TLI burn. The amount of O2 at that point is probably similar to 10,000 feet MSL. However, I didn't realize humans would be happy at 2 psi, even if with pure O2.Assuming one is wearing an O2 mask, how low does the pressure have to go before there would be detrimental effects?
It was 5 psia
This is the SM-CM umbilical. I am sure it has a fancy name and acronym. It carries power, oxygen, commands etc. between the two modules. You don't want to run these lines through the heat shield and therefore go arround it.
The famous Apollo 13 picture of the SM (with the "whole side of the spacecraft missing") shows it quite nicely.
Pure oxygen at 5psi is less of an issue than at the 19-some psi on Apollo 1 (14.7 psi + 5-ish).
Q: In the movie Apollo 13 the actor playing Fred Haise calls out "SECO" at S-IVB shutdown. I know it's Hollywood but that film is just about as close as Hollywood ever gets to accurate.Does SECO make sense in that context; i.e. whether Haise said it or not, was the S-IVB used as a sustainer in some way during launch? My understanding of sustainers (and orbital mechanics for that matter) is anecdotal at best.
Quote from: jhf on 08/26/2009 06:51 pmQ: In the movie Apollo 13 the actor playing Fred Haise calls out "SECO" at S-IVB shutdown. I know it's Hollywood but that film is just about as close as Hollywood ever gets to accurate.Does SECO make sense in that context; i.e. whether Haise said it or not, was the S-IVB used as a sustainer in some way during launch? My understanding of sustainers (and orbital mechanics for that matter) is anecdotal at best.sustainer and SECO applies only to classic AtlasSECO is used by Delta meaning second stage engine cutoffBut the term for SIVB on the Saturn V would be TECO. SECO would only apply to the Saturn IBAnother movie screw up