The unofficial successor to Concorde is one step closer to reality after Boom Supersonic marked the 11th successful test flight of its XB-1 supersonic demonstrator aircraft. On Jan. 10, the XB-1 ...

Boom Supersonic's XB-1 demonstrator craft could become the first commercial jet to break the sound barrier since Concorde after acing its 11th test and reaching 0.95 Mach at low altitudes. When you ...