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From: doug@escher.UUCP (Douglas J Freyburger)
Newsgroups: net.space
Subject: Re: Galileo mission to Jupiter
Message-ID: <24@escher.UUCP>
Date: Thu, 9-May-85 00:34:24 EDT
Article-I.D.: escher.24
Posted: Thu May  9 00:34:24 1985
Date-Received: Fri, 10-May-85 02:45:57 EDT
References: <1671@mordor.UUCP>
Organization: NASA/JPL, Pasadena, CA
Lines: 25

> The Orbiter will fly within a few hundred kilometers of the 
> surface of Mars. The Orbiter will use Mars' gravity and a long 
> burn of its own rocket motor to boost it the rest of the way to 
> Jupiter. 

This manuever and the fly-by of an asteriod near its projected
flight path were still up in the air last I heard.  By the way,
the advantage of the burn close to Mars is that the kinetic
energy difference in relation to the sun is gained by the space
craft.  Losing the mass inside the gravity well gains that much
energy from Mars's gravitational field.  I went over the
equations on that several years ago before I believed it.  Don't
remember it exactly anymore.

> The Orbiter will complete 11 orbits of Jupiter while making a 
> close flyby of one Galilean satellite - Io, Europa, Ganymede or 
> Callisto - on each orbit.

The only time it will get close to Io is on the first pass.
There is too much radiation that deep in, so most of the mission
is being kept farther out.  Still, the craft will get more than
enough Rads to fry any of us.

DOUG@JPL-VLSI, ...trwrb!escher!doug, etc.
Douglas J Freyburger