[FPSPACE] Re: Deep Space Expeditions
Robert G Kennedy III
robot at ultimax.com
Fri Aug 12 00:42:27 EDT 2005
"Jim Oberg" <joberg at houston.rr.com> said:
>Not to argue with the issue of a test flight or two,
>but where is 'Proton' mentioned in the proposal?
>Read it more carefully.
That would be my fault. I mentioned "Proton".
I assumed the simplest way (i.e. w/o much new engineering) to throw a
7-tonne Soyuz capsule around the Moon in a reasonable time (i.e. w/o the
orbital hooping trick which saved AsiaSat 3A) would be to mate it up in LEO
with a single tanker on the order of 20 tonnes (i.e. a Proton escape stage).
(Uncharacteristically for me) I did not bother to look up the delta-vee for
the mission, thus estimate the mass fraction. Perhaps I should.
I also stipulate that if this is going to be a continuing business, not
just a one-off stunt, then more refinement (spend money to reduce mass)
would be justified.
And, like I said before, the true cost of the mission may be much higher
than the subsidized-by-economic-collapse space launch prices of the
Robert Kennedy, PE
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