“A single-engine aircraft is attractive because it has a smaller footprint on the airplane,” says Ray Castner, the NASA propulsion lead for the X-59. “It takes up less space. Sonic boom is ...

BOOM SUPERSONIC SAYS XB-1 AIRCRAFT FLEW OVER MACH 1 WITH NO AUDIBLE SONIC BOOM ON THE GROUND BELOW The aircraft, detailed in blueprints in a recent academic paper, is meant to reach Mach 1.6 and ...