Questions tagged [command-module]

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8
votes
1answer
620 views

Why were the apollo CM RCS thrusters all placed in only one half of the module?

All the apollo CM RCS thrusters for pitch, roll, and yaw control were placed only in the upper half of the capsule (as seen in the image below). Why is that? (I think I read somewhere that it was due ...
14
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2answers
1k views

Improvements in Saturn V, LM and CSM after Apollo 10

Apollo 10 is considered to be full dress rehearsal for Apollo 11. Did the trial flight of Apollo 10 identify any improvements that were needed in the Saturn V, CSM and LM, to be done before Apollo 11 ...
2
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0answers
49 views

Why did the CM & LM have to be separated at Apollo launch? [duplicate]

I've just read a bit about Apollo 13, and 1 question that kept popping up in my mind when they talked about the docking between the Command module & the Lunar one is that why did they have to be ...
1
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0answers
116 views

What was the leeward surface temperature of the Apollo Command Module during reentry?

From the Apollo Experience Report: Thermal Protection System, there is a diagram that shows the surface temperatures of the Command Module at various points (image was obtained from this answer). It ...
3
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3answers
179 views

Comparison of space shuttle, command module, and lunar module window sizes

The space shuttles had a viewing window much similar in looks like the windshield of a car, or like the cockpit of a plane. However, neither the Apollo command module (CM) nor the lunar module (LM) ...
5
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1answer
96 views

What happen to the Smithsonian Institutes 3d scan of the Apollo 11 Command Module?

"Since its landing on July 24th, 1969, the Columbia has been kept sealed in plexiglass at the Smithsonian Institute in Washington, DC. That is, until recently, when the software company Autodesk was ...
3
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1answer
125 views

How fast were Apollo atmosphere composition reverted back to sea-level atmosphere?

Apollo spacecraft used a pure oxygen atmosphere while in space and an atmosphere with 60% oxygen at launch time. This chapter describes how the atmosphere composition varied from 60% to 100% oxygen in ...
14
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2answers
3k views

How did Apollo 15's depressurization work?

Artwork depicting the EVA in question, NASA, via wikimedia.org On the way back an EVA was performed, and since there wasn't an airlock, the Command Module was depressurized. Was this feature only ...
6
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1answer
172 views

Did the LEM ever rise above the orbit of the CSM at any time

We all know that the LEM descended from the CSM to the moon's surface and then rose back again to dock with it. But there are some videos that show the CSM floating in the foreground with the moon's ...
9
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1answer
186 views

Did Apollo 13 CM reach thermal equilibrium when it was powered down?

It was reported that the CM cabin temperature dropped to 43°F. Was that the equilibrium, or would it have gotten colder if it had remained in space longer. If that wasn't equilibrium was there an ...
9
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2answers
629 views

Connection between SM an CM

If the bottom part of the command module (CM) of the Saturn-V was the thermal shield, how was the CM connected with the utilities of the Service Module (SM)?
5
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1answer
163 views

Is deformation of the impact attenuation system visible on the surviving Apollo command modules?

As pointed out in this question, the Apollo command module had crushable ribs along one edge of the base of the cone, and crushable struts that suspended the crew couches inside the vehicle. I've ...
18
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2answers
2k views

Which module had more 'comfort' in terms of living space, the Lunar Module or the Command module?

Where were the astronauts more comfortable spending the day, sleeping, donning space suits, etc: the LM or the Command Module? Considering, of course, that the Command Module would carry three crew ...
11
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2answers
2k views

Apollo command module space walk?

Could the Apollo astronauts have done an eva, from the Command Module, during the flight to or from the Moon?