In article ,
says...

In article ,
says...
By all means please do ignore anything you don't see to be relevant or interesting.

Ok. plonk

This is rational discourse?

Jeff
--
"the perennial claim that hypersonic airbreathing propulsion would
magically make space launch cheaper is nonsense -- LOX is much cheaper
than advanced airbreathing engines, and so are the tanks to put it in
and the extra thrust to carry it." - Henry Spencer