The single-seat, three-engine jet is the first independently developed plane to exceed Mach 1 in level flight.
Denver-based Boom Technology's XB-1 demonstrator plane hit Mach 1.122 — 750 mph. It's the first independently developed ...
THE ‘Son of Concorde’ XB-1 jet has successfully reached supersonic speeds today, breaking the sound barrier for the first ...
Denver-based Boom Supersonic's XB-1 demonstrator plane ... selling seats on Overture at fares similar to those for first and business class seats on current commercial airliners.