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Apollo and Shuttle acend suits?
I notice that shuttle crews walk out to the bus that takes them to the
pad with no suit helmet or gloves on, but the guys on the Apollo missions were all helmeted and sealed up, why? I am assuming that they were breathing 100% o2, and the shuttle crews are breathing air. -- Christopher |
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Apollo and Shuttle acend suits?
Christopher writes:
I notice that shuttle crews walk out to the bus that takes them to the pad with no suit helmet or gloves on, but the guys on the Apollo missions were all helmeted and sealed up, why? I am assuming that they were breathing 100% o2, and the shuttle crews are breathing air. Exactly right--pre-shuttle astronauts had to start breathing pure O2 to purge the nitrogen from their bloodstreams before they got to space, where the cabin pressure was 5 psi and would have caused the bends if their blood was saturated with N2 at ~15psi. |
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Apollo and Shuttle acend suits?
"Christopher" wrote in message ... I notice that shuttle crews walk out to the bus that takes them to the pad with no suit helmet or gloves on, but the guys on the Apollo missions were all helmeted and sealed up, why? I am assuming that they were breathing 100% o2, and the shuttle crews are breathing air. Correct. Since Apollo ran at a partial pressure in orbit, they wanted to start purging as much N2 from their body as early as possible. -- Christopher |
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Apollo and Shuttle acend suits?
On Fri, 30 Dec 2005 16:36:11 GMT, Christopher
wrote: Right, thanks for the clarification reply's. -- Christopher |
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