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From: goldader@uhccux.uhcc.hawaii.edu (Jeff Goldader)
Newsgroups: sci.space.shuttle
Subject: Direct ascent trajectory
Message-ID: <6124@uhccux.uhcc.hawaii.edu>
Date: 11 Jan 90 19:22:24 GMT
Distribution: na
Organization: University of Hawaii
Lines: 13

Does anyone know what advantages the direct ascent launch trajectory 
gives? I've heard of it being used several times, but never really 
heard *why* it's used.  I do know it makes the OMS-1 burn unnecessary, 
which leads me to believe it gives a higher apogee on the initial 
orbit, but that's about it.

Thanks in advance...

Jeff Goldader				University of Hawaii
goldader@uhccux.uhcc.hawaii.edu		Institute for Astronomy

UH and the IfA don't know what I say, and I don't care what they think,
and we're happy that way.