Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.3 4.3bsd-beta 6/6/85; site sdcc6.UUCP
Path: utzoo!linus!philabs!cmcl2!seismo!harvard!talcott!panda!genrad!decvax!ittatc!dcdwest!sdcsvax!sdcc3!sdcc6!ix241
From: ix241@sdcc6.UUCP (ix241)
Newsgroups: net.sci,net.space
Subject: Re: Re: Would a candle burn ...
Message-ID: <2174@sdcc6.UUCP>
Date: Tue, 6-Aug-85 10:58:29 EDT
Article-I.D.: sdcc6.2174
Posted: Tue Aug  6 10:58:29 1985
Date-Received: Sat, 10-Aug-85 22:09:57 EDT
References: <53@ssc-vax.UUCP> <1206@sjuvax.UUCP> <1816@aecom.UUCP> <3429@utah-cs.UUCP>
Distribution: net
Organization: U.C. San Diego, Academic Computer Center
Lines: 13
Xref: linus net.sci:137 net.space:2922
Summary: .2 atm O2 then; earth normal now

During Apollo and earlier missions NASA always used a reduced pressure
pure oxygen enviroment on missions.  They used full pressure O2 for many
ground tests until the disaster of Apollo 1.

Currently an Earth normal atmosphere is used in the Shuttle.  That is
the reason space walkers have to prebreathe.  The suits use the 4PSI
pure O2 that was used in the older missions.  The main reason for the
reduced pressure, however is to make the suits easier to operate.  Less
work against pressure.

John Testa
UCSD Chemistry
sdcsvax!sdcc6!ix241