Brian Atkins writes:
> Nothing, it has been done before (last year?) with some amateur-size
> rocket/balloon stuff I think.
Question is, how this performs economically if scaled up to putting
100-500 kg to LEO. If it's enough to do away with the first stage, or
go to single-stage ultralight altogether, with optimized fuel and
Lavalle geometry for near-vacuum...
Of course 100 kg is not very much, if one contemplates soft-land a
payload on Luna surface. Lots of reaction mass, even for a relatively
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