"Jeff Findley" wrote:

This is a wet dream for many aerospace engineers. Air breathing, horizontal
takeoff hypersonic first stage coupled with a horizontal landing space
maneuvering vehicle. And how do you make the numbers work?

I keep asking: if the large and long-proven demand for point-to-point
transport on earth hasn't yet paid for an air-breathing hypersonic
aircraft, how the hell is the much smaller demand for LEO supposed to
do so?

But that doesn't matter to the wet-dreamers, because It's For Space.