Boom: America’s answer to Concorde completes its first supersonic flight
Boom Supersonic, the American company building what promises to be the world’s fastest airliner, broke the sound barrier for ...
‘New Concorde’: Boom’s XB-1 jet breaks sound barrier on first supersonic flight
Boom’s XB-1 jet breaks sound barrier on first supersonic flight - Boom’s inaugural XB-1 supersonic test flight reached speeds of more than 850 miles per hour ...