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air expansion or compression formula?

Thread Status: Hello , There was no answer in this thread for more than 60 days.
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bobbybuttr

New Member
Sep 11, 2003
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A question for mathematic people. What is the air expansion formula for ascents? I know its not liner since air expands or compresses more in the first few feet than when a person is deeper. Specifically I would like to be able to determine the expansion at different depth to the surface. Say 6 feet to the surface.
Thanks,
Bobby
 
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Bill

Baron of Breathold
Oct 17, 2001
1,805
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If I understand it right, expansion is linear in atmospheres. Six feet is 6/32.8+1 or 1.18 atm. and expansion to the surface should be almost 20%.
Aloha
Bill
 
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