Re: Oxygen

Date:         12 May 99 02:48:48 
From:         glpilotsrv@aol.com (GLPILOTSRV)
Organization: AOL http://www.aol.com
References:   1
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It has been a long time since I have been to through the flight
physiology and altitude chamber training at ADW. However, if I recall
correctly, the body is capable of operating up to about 15,000 feet
without supplemental oxygen. Of course, a person's physical condition is
a factor in how high or how long the individual can operate before
hypoxia sets in.

In addition, again if I recall correctly, the magic number for operating
with supplemental oxygen not under pressure is 25,000 feet. Above this
altitude, the oxygen must be supplied under pressure in order for the
hemoglobin to absorb the oxygen. The time of useful conciousness at high
altitudes, (41,000 feet for example) without supplemental oxygen under
pressure is a matter of seconds.

Hope my numbers are correct. If not, am sure someone in the newsgroup
can correct my long term memory.

G. Lee