Cabinet Modules

Cabinet Modules questions about the moon landing? 1 -The ascend part of the lander and the service modul docked at some point. The astraunauts went from one space craft into another. Wouldn´t th...

Cabinet Modules

questions about the moon landing?

1 -The ascend part of the lander and the service modul docked at some point. The astraunauts went from one space craft into another. Wouldn´t they need a chamber in one of the crafts so the pressure would be equalized?
2- The lunar module would probably need such a chamber too, since it was unlikely that the astraunauts walked out of a cabinet with pressure straight into vacuum. I haven´t seen a chamber like that in any one of the LM pictures on the internet, can somebody explain that?
3- If as claimed the lander ended up landing miles away from where it originally was supposed to, wouldn´t that require reprogramming everything so it wouldn´t miss the CM on the way back? Did NASA know exactly where the lander had landed? Wouldn´t it take an inch for the lander to miss the orbit unless it took off at the right second and from the exact location?

1) The pressure was engineered to be the same in both craft: 5 psi of oxygen, as it was in the suits.

2) The lunar module was evacuated (air dump) before its door could be opened. It was repressurized after boarding. No air lock. LOX tankage massed less than an airlock and mass was at a premium.

3) Rendezvous only required good orbital matching (timing and aiming) not good position matching. It's vacuum, git - no air resistance. Any applied force permanently bestows velocity until another force is impressed. Given precision, accuracy was only a matter of patience and launch window for the return. Course correction as necessary was applied on the way home.