Henry Spencer wrote:

Heat-exchanger rockets don't have great Isp, but with LH2 they can have
reasonable Isp -- enough better than chemical that SSTO does not look too
difficult

Certainly the early vehicles won't be SSTO; the vehicle/lasers are much too small. Jordin was talking about using drop tanks.

                                                         Henry Spencer
                                                      [EMAIL PROTECTED]

--
-Ian

Motto: "You're Not Authorized to Know Our Motto."
"War is never right, unless of course there is a second UN resolution" - Private Eye
"War, huh? What is it good for?" - Frankie goes to Hollywood
"Getting reelected" - G. Bush



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