The countdown has begun for the XB-1’s “historic” first supersonic test flight that should break the sound barrier, according ...

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 ...

The same airspace saw Chuck Yeager become the first person to exceed the speed of sound in 1947. Boom’s test plane is named after Mr Yeager’s iconic aircraft, the Bell X-1. Former Concorde ...

made it the first civil supersonic jet made in the U.S. to break the sound barrier. Manned by Boom Supersonic's chief test pilot Tristan "Geppetto" Brandenburg, the XB-1 launched in the early hours of ...

The XB-1 prototype accelerated smoothly to reach as fast as Mach 1.11 at about 35,000 feet at 11:33 a.m., 11:38 a.m. and ...

according to a press statement from Boom. The measurement "Mach" refers to the speed of an object in relation to the speed of sound in the surrounding medium, with Mach 1 referring to something ...

Putting the aircraft under this strain at transonic speed, just below the speed of sound, demonstrates the ... number until we inevitably make that sonic boom," Nick Sheryka, c hief flight ...

Commercial supersonic flight sped closer to returning as the Boom ... speed. That is, flight so close to Mach 1 that some areas of airflow over the airframe exceed the speed of sound.

This week, a sleek white jet became the first privately built aircraft to fly faster than sound, soaring high above the Mojave Desert as a crowd watched in excitement ...