Seven down. Three to go. Boom Supersonic—the developer of a 64-to-80-passenger commercial airliner that flies faster than the speed of sound—last week set speed and altitude records with its XB-1 test ...

Boom Supersonic's XB-1 aircraft set a new speed record during its latest test flight. The Colorado company is working through a flight test program of the XB-1 supersonic demonstrator aircraft, which ...

Swiss start-up Jekta plans next month to begin flight testing a scale model of the amphibious hydrogen-electric passenger aircraft it aims to bring to market next decade. The company released images ...