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 sonic boom-producing supersonic travel are cheaper than using this Mach cutoff method.

A "son of Concorde" aircraft that may one day fly from New York to London in 1.5 hours has reached supersonic speeds. An incredible image shows Boom Supersonic's XB-1 jet breaking the sound barrier. The Colorado-based company says specialized photography from NASA shows the shock waves as Boom’s supersonic demonstrator achieved supersonic.

US aeronautics agency NASA managed to capture the Boom Supersonic XB-1 research aircraft as it broke the sound barrier during its final flight on 10 February. The flight - the XB-1's second in excess of Mach 1 - was the last in a series of test sorties by the aircraft,

Prior to 2003 a transatlantic trip from new york to london could be done in as little as 3 hours, compaired to today's fight time of around 8 hours. This was al

It is often said that a picture is worth a thousand words, and a recent photo released by NASA in conjunction with Boom Supersonic shows just how remarkable capturing a moment can be. Boom Supersonic is currently building the world’s fastest airliner,