On 21/09/16 15:00, Henry Spencer wrote:
For doing it today, the one thing I would wonder about is whether we
have the right engines for it -- sustained high-supersonic speed has not
been a priority for jet-engine design in recent decades. (Not even in
fighter engines, because real fighters on real missions rarely get
anywhere near Mach 2, a fact that was not then appreciated.) An
appropriate new engine could be developed, for sure, but there might not
be anything suitable available off the shelf.