Breaking Mach 9.6 with an air-breathing engine wasn’t just a speed stunt. It confirmed that scramjets can operate where rockets once had the field to themselves,” said Harry J. Kazianis, citing the ...

NASA maintains its 2025 target for the X-59 Quesst quiet-supersonic demonstrator's maiden flight as the programme advances ...

In conducting its mission to explore the limits of speed and even venture above the atmosphere to the edge of space, the X-15 program would provide valuable data for use in solving the problems to be ...