New Scientist on MSN2d
Experimental XB-1 aircraft goes supersonic for the first time
Boom Supersonic’s XB-1 aircraft broke the sound barrier during three test runs, a step toward the possible return of ...
Flightglobal3d
Boom’s XB-1 achieves supersonic flight over Mojave desert
US aerospace firm Boom Supersonic's experimental XB-1 aircraft has achieved a speed in excess of Mach 1 for the first time.