During the Nov. 5 test flight, which lasted 55 minutes, XB-1 reached an altitude of 23,015 feet (7,015 meters) and a new top ...

"XB-1 is reaching higher speeds and altitudes, gradually expanding its flight envelope to prepare the aircraft and team for ...

"Flight seven focused on flutter envelope expansion and cockpit pressure testing in order to ensure safe performance and handling qualities as XB-1 approaches supersonic speeds and higher altitudes." ...

Boom Supersonic's XB-1 aircraft has achieved its fastest speeds yet, blasting towards its goal of surpassing the speed of ...

Boom Supersonic's XB-1 hits a new speed milestone of 629 mph, bringing it closer to breaking the sound barrier—setting the ...

The jet nicknamed the 'Son of Concorde' has just hit a new top speed in its latest test flight.

XB-1 demonstrator did not quite break the sound barrier during its seventh test flight but reached speed and altitude ...

Exosonic, a startup developing supersonic commercial air travel and UAV tech, is winding down after five years of operation. In an update posted to its website, Exosonic said it was unable to find ...

“Although the founders and team still believe in the need/desire for quiet supersonic flight and supersonic drones for the US Department of Defense, without further customer support for either ...