Denver-based Boom Technology's XB-1 demonstrator plane hit Mach 1.122 — 750 mph. It's the first independently developed ...
The single-seat jet, a 201-foot-long test model by Boom Supersonic, hit 844 mph just 12 minutes into its latest test flight ...
An aircraft developed by Boom Supersonic has become the first independently funded jet to break the sound barrier.
Tuesday’s XB-1 flight marks the first human-piloted civil supersonic flight since Concorde’s retirement more than 20 years ...