Scramjets !!!! It works

John wrote:

>High speed in the air means high speed on the ground during take off
and
landings, because with thin supersonic wings an aircraft cannot control
itself well or generate a safe level of lift at low speeds...

Yes, but that in itself helps promote the case for a TSTO vehicle, the
carrier aircraft being designed for the slower/lower part of the flight
envelope, and launching an optimised vehicle at high altitudes for
orbital insertion.

Given current Isps and materials the maths alone makes TSTO a more
practical goal for RLVs.

Andy Goddard