"Fred J. McCall" wrote in message
...
"Jeff Findley" wrote:
:The Russians have been transferring storable hypergolic fuel and oxidizer
:from Progress tankers to their stations (including ISS) for years. No
EVA
r clumsy pressure fittings seem to be required for this to work.

Now you might want to look at the thrust developed and burn durations.
I don't see any of those vehicles going to the Moon, landing, and then
taking back off.

Which is why I've said before that I think in orbit transfer of LOX and
other mild cryogens (like methane) ought to be a technology that NASA should
be researching now. After all, once we set our sights on Mars, even the
SDHLV is going to be too small to launch a fully fueled Mars transfer stage.
Why not start working on the technology needed now?

Jeff
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