> Spike Jones wrote:
> > Only seldom are solids used in upper stages.
> Mike Lorrey wrote:
> What? I have very often seen video of satellites headed for geosynch
> being released, spinning, by the space shuttle, with the unmistakable
> gourd shaped solid fuel upper stage on it.
Ja, spinners are a little more forgiving. The gyro action helps
keep them going pointy end first. Solids are OK when
you dont need much delta vee. Solids are also easier to
take in the cargo bay of the shuttle, where one liquid fuel
leak could spoil your whole day. spike
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