Newsgroups: sci.space.shuttle
Path: utzoo!henry
From: henry@zoo.toronto.edu (Henry Spencer)
Subject: Re: hydrazine
Message-ID: <1990Nov8.053742.10904@zoo.toronto.edu>
Organization: U of Toronto Zoology
References: <7565@eos.arc.nasa.gov> <5987@mace.cc.purdue.edu>
Date: Thu, 8 Nov 90 05:37:42 GMT

In article <5987@mace.cc.purdue.edu> dil@mace.cc.purdue.edu (Perry G Ramsey) writes:
>> Anybody know in what vehicles hydrazine is used as a monopropellant?
>
>Just about every US unmanned spacecraft these days uses monopropellant for
>maneuvering fuel.  GOES, Hughes spin stabilized comm satellites, ERBS, come
>to mind immediately.

Also the Voyagers, and probably most of the other planetary missions other
than Galileo (which is bipropellant, I believe).

Note that it's usually monomethylhydrazine, not plain hydrazine.  I believe
the primary difference is better behavior at temperature extremes.
-- 
"I don't *want* to be normal!"         | Henry Spencer at U of Toronto Zoology
"Not to worry."                        |  henry@zoo.toronto.edu   utzoo!henry