Re: Oxygen

Date:         18 Jun 99 01:39:47 
Organization: - Share what you know. Learn what you don't.
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Don Stauffer <> wrote:
> timma wrote:
> > Can anyone tell me how we survive breathing oxygen above 12K in
> > aircraft without oxygen masks??

> The cabins are pressurized.


>  An air compressor compresses the air until it
> has the same pressure as about 8000 ft altitude.

I am afraid no. In transport pressurized aircrafts, the air is taken
("bleed") from the engine axial compressor, thus causing a decrease in
the engine thrust.

Only in small, piston-engine-powered aircarfts, the pressurisation air
is taken from specific compressors.

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