But while the successful test flight of XB-1 shows that supersonic flight without sonic booms is technically feasible, the next phase is making it economically feasible. Right now, both subsonic and ...

94—about 20% faster than today’s airliners—to comply with a federal ban on civil supersonic flight meant to limit sonic booms. Boom aims ... joint venture between Gulfstream and the Russian ...

NASA also gathered sound data from the test flight. Boom Supersonic analyzed the data and found that no audible sonic boom reached the ground. This is notable, because supersonic flights that make ...