Boom's Supersonic XB-1 jet became the “world’s first independently developed supersonic jet” to break the sound barrier ...

Boom Supersonic's XB-1 made history on Tuesday by becoming the first civil aircraft to break the sound barrier. Before ...

This means XB-1 traveled at a rate 0.122 faster than the speed of sound. Because supersonic aircraft have historically been created and used by agencies like governments and militaries, XB-1’s ...

The measurement "Mach" refers to the speed of an object in relation to ... privately funded and developed aircraft has broken the sound barrier over the continental U.S. (And it did it three ...

Boom Supersonic's XB-1 demonstrator jet became the first U.S.-made civilian supersonic jet to break the sound barrier. The independently funded XB-1 reached a speed of Mach 1.122, or about 750 mph ...

A sleek white aircraft has become the first independently developed jet to break the sound barrier. The XB-1 aircraft ...

The test plane, flown by chief test pilot Tristan `Geppetto’ Brandenburg, pushed through the sound barrier at around 8:30am local time in a four-minute high speed run through a specially ...