jet breaks sound barrier on first supersonic flight

Denver-based Boom Technology's XB-1 demonstrator plane hit Mach 1.122 — 750 mph. It's the first independently developed ...
Boom Supersonic, the American company building what promises to be the world’s fastest airliner, broke the sound barrier for ...
A prototype of a passenger jet meant to succeed Concorde will attempt to break the sound barrier for the first time on ...
Boom Supersonic CEO Blake Scholl said the Mach 1.7 Overture will keep the US aviation industry ahead of China in the ...