A supersonic jet plane designed to make very little noise took flight for the first time this week, cruising over the southern California desert just after sunrise in what could be the first step ...

Boom Supersonic passed a major milestone with its first experimental flight to reach Mach 1. The speed was achieved about 11 minutes into the test. “There we are!" said Mike Bannister. "XB-1 is ...

The X-1’s fuselage was designed to resemble a .50 caliber bullet—one of the only shapes known to have stable flight at supersonic speeds. The Bell X-1 hangs today from the ceiling of the National Air ...