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From: "Hamid A. Wasti" <hwasti@starband.net>
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Subject: Re: [LML] Re: Cabin Pressurization in SpaceShipOne
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> Posted for "Larry Henney" <lhenney@attg.net>:
>
>  I'm sure some math genius could tell us how much atmosphere is left
>  above 50K.

You can do the math to get the number or you can just look it up in the 
standard atmospheric table.  Since you wanted the mathematical solution, 
my equations come up with about 1.7 PSI at 50,000 feet, going down to 
1.0 PSI at 61,000.

Hamid