The fastest speed the XB-1 had reached prior to the January 28 flight was Mach 0.95, just below the supersonic threshold of Mach 1, which it hit during its last ... for Concorde first flew at ...

The fastest speed the XB-1 had reached prior to the January 28 flight was Mach 0.95, just below the supersonic threshold of Mach 1, which it hit during its last test flight on January 10. A livestream ...

Boom Supersonic, the American company building what promises to be the world’s fastest airliner, broke the sound barrier for its first time with a test flight in Mojave, California. The XB-1 ...

By comparison, a one-way ticket on one of British Airway’s last Concorde flights would have cost the equivalent of £6,280, when adjusted for inflation. Boom’s Denver, Colorado, based team ...