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From: carroll@uiucdcsb.CS.UIUC.EDU
Newsgroups: net.space
Subject: Re: Slingshot effect
Message-ID: <15700033@uiucdcsb>
Date: Sun, 17-Nov-85 16:38:00 EST
Article-I.D.: uiucdcsb.15700033
Posted: Sun Nov 17 16:38:00 1985
Date-Received: Tue, 19-Nov-85 04:02:06 EST
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Nf-From: uiucdcsb.CS.UIUC.EDU!carroll    Nov 17 15:38:00 1985


Isn't it control of direction that is more efficient deep in a gravity
well? I.e., if you want to make a course correction, it's a lot cheaper to
do it close to a large mass (as exemplified by the Solar Polar Mission doing
it's course change next to Jupiter). I would suppose that it is easier since
you can dump your momentum into a huge momentum sink (in effect, using the
planet as reaction mass).