The X-15 was the vaunted hypersonic rocket-powered aircraft that the USAF and NASA ... at which point the airframe’s hydrogen fueled, air breathing ram/scramjet (mounted in the belly of the ...

It was called the NASA/USAF X-15 and it was an experimental aircraft designed by Nasa and the United States Air Force for a hypersonic research program. The X-15 broke records when reaching the ...

In the joint X-15 hypersonic research program that NASA conducted with the Air Force, the Navy, and North American Aviation the aircraft flew over a period of nearly 10 years and set unofficial ...

While all commercial airliners operate at subsonic speeds (save for the now-retired Concorde), military aircraft routinely operate at supersonic (and hypersonic ... the X-15 is the fastest ...

If China can pull off large-scale production of such a plane, it would revolutionize international air travel as we know it.