[X] My Assistant

[Rem31]

Can you walk on Mars (without) protection spacesuit? I think it is possible because it is only my thought. Is this true?

[Rem31]

And what happens when you are trying to breath in on the Moon or on Mars (unprotected) without pressuresuit? And what is the pressure (in) a airplane during a passenger flight at 36,000 feet high? And what happens when decompression occurs then? (totally loss of pressure) inside the cabin of the airplane.

[tty]

And what is the pressure (in) a airplane during a passenger flight at 36,000 feet high? And what happens when decompression occurs then? (totally loss of pressure) inside the cabin of the airplane.

The pressure is about equal to being at 10,000 feet altitude. The reason it is kept at this level and not at sealevel pressure is to save power and decrease the strain on the pressure shell (which is very considerable). This altitude (10,000 feet) is normally quite safe for any reasonably healthy person (though I have seen people get altitude sickness at 11,000-12,000 feet).

If You have an explosive decompression there is one hell of a bang and the cabin fills with fog (since the thin air can't suspend nearly as much water vapour). The emergency oxygen masks should drop down, and usually they do. The crew (which have a separate, better and rather more reliable oxygen system) initiates an emergency descent. Normally this is fast enough to avoid casualties even if the oxygen system does not deploy. It is very rare for fatalties to occur in decompression accidents.
As a matter of fact in the case of the B737 accident I mentioned in an earlier post apparently most of the people were still alive but unconscious when the plane crashed and this was after a long flight at high altitude without pressurization.

tty