In article ,
Azt28 wrote:
And are hypersonics a good idea for anything at all?
For high-speed cruise within the atmosphere -- assuming you have some
urgent reason to want to do that -- they look promising...

I think the sonic boom forbids any hypersonics aircraft service.

Not if it's military. And there are some theoretical possibilities for
low-boom or no-boom flight, although whether they will work at hypersonic
speeds is unclear.
--
MOST launched 30 June; science observations running | Henry Spencer
since Oct; first surprises seen; papers pending. |