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Path: utzoo!kcarroll
From: kcarroll@utzoo.UUCP (Kieran A. Carroll)
Newsgroups: net.columbia
Subject: Re: Emergency landings and OMS
Message-ID: <3815@utzoo.UUCP>
Date: Wed, 2-May-84 14:00:15 EDT
Article-I.D.: utzoo.3815
Posted: Wed May  2 14:00:15 1984
Date-Received: Wed, 2-May-84 14:00:15 EDT
References: <1038@sdcrdcf.UUCP> <441@ihlts.UUCP>, <1191@brl-vgr.ARPA>
Organization: U of Toronto Zoology
Lines: 12

*

   If the shuttle does have helium tanks (I'm pretty sure that it does, 
but must admit that I've not checked any technical references),
then it probably uses them to store the helium that's used to pressurize
the hydrazine fuel used by the orbital manoeuvering engines and attitude
control engines. The pressurized helium is used to force the fuel out of 
its storage tanks, rather than using heavier and more complicated
fuel pumps to provide pressurized fuel to the engines.

-Kieran A. Carroll
...decvax!utzoo!kcarroll