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The 100/10/1 Rule.
Pat Flannery wrote:
Henry Spencer wrote: Addendum: And there have been several rediscoveries of the fact that if you put six or seven SSMEs underneath an ET, even with generous allowances for things like thrust structure, it makes orbit with about the same payload as the shuttle. What about RS-68s? You would be hard pressed to get an RS-68 to go single stage. The T/W ratio is twice the SSME, and the Isp is lower. Plus it's a ... ahem ... hard starter. -- Get A Free Orbiter Space Flight Simulator : http://orbit.medphys.ucl.ac.uk/orbit.html |
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