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- Newsgroups: sci.med
- Path: sparky!uunet!munnari.oz.au!sgiblab!darwin.sura.net!gatech!asuvax!ennews!anasaz!misty!john
- From: john@anasazi.com (John R. Moore)
- Subject: Re: How does the body adjust to high altitude?
- Organization: Anasazi Inc, Phoenix AZ USA
- Date: Tue, 26 Jan 1993 22:54:43 GMT
- Message-ID: <john.728088883@misty>
- References: <1k1dioINN2lj@im4u.cs.utexas.edu> <1993Jan25.195258.15698@dsg.cs.tcd.ie>
- Sender: usenet@anasazi.com (Usenet News)
- Lines: 36
-
- sloubtin@dsg.cs.tcd.ie (Sylvain Louboutin) writes:
-
-
- ]another related question:
-
- ]the current altitude record with a sailplane (non-pressurised aircraft,
- ]although equipped with oxygen breathing system), is slightly more than
- ]50,000 feet.
-
- ]what would be the highest possible altitude reachable safely without
- ]pressurisation (i.e., with the crew still able to operate an aircraft)?
- ]and what would happen higher? (I am not talking of hypozia, here as
- ]a breathing equipment is used.) In other words what would be the
- ]physiological limit to such records?
-
- (possibly rusty memory from a Navy flight physiology course for airmen
- I took about 25 years ago):
- At somewhere around 45-47000 feet, you will lose the ability function
- even with a forced pressure oxygen mask. Your body would have to be in a
- pressurized area or suit at or above that altitude.
-
- By the way, in that course they put us in a high altitude chamber and
- took us to 45000 feet with a mask. Then they brought us down to around
- 30000 feet and had us take of the mask. Interesting effect... even
- expecting hypoxia it was so sneaky that I never detected it until
- someone came along and put my mask back on.
-
- However, remember that we are really talking about pressure altitude,
- not altitude above sea level. The sail plane may have been flying
- in a high pressure area where the pressure altitude was higher than
- the MSL altitude.
- --
- John Moore NJ7E, 7525 Clearwater Pkwy, Scottsdale, AZ 85253 (602-951-9326)
- john@anasazi.com ncar!noao!asuvax!anasaz!john anasaz!john@asuvax.eas.asu.edu
- - - A conservative is a liberal who has been mugged by reality! - -
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