First independently developed jet breaks the sound barrier over the California desert
A sleek white aircraft has become the first independently developed jet to break the sound barrier. The XB-1 aircraft ...
The Baltimore Sun7d
First independently developed jet breaks the sound barrier over the California desert
A sleek white aircraft became the first independently developed jet to break the sound barrier ... fly faster than the speed of sound — typically about 760 mph (1,223 kph) near sea level but ...