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Old October 22nd 13, 11:09 PM posted to sci.space.policy,sci.space.history
David Spain
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Default SSTO's would have made possible Arthur C. Clarke's vision of2001.

On 10/22/2013 6:03 PM, David Spain wrote:
If 30% of the propellant is kept in reserve how would that effect the
mass ratio?*


Admittedly that reserve figure may be too high.

Dave