New Concorde' attempts to break sound barrier on first supersonic flight - Boom’s inaugural XB-1 supersonic test flight takes off later today

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, on Tuesday.

The single-seat jet, a 201-foot-long test model by Boom Supersonic, hit 844 mph just 12 minutes into its latest test flight out of California’s Mojave Air and Space Port.