On its 12th test flight, the Boom XB-1 prototype broke the sound barrier three times and achieved a top speed of Mach 1.1.
The F-5A was a testament to what happens when a defense contractor actually tries to restrain its impulses and focus on ...
The XB-1, piloted by chief test pilot Tristan "Geppetto" Brandenburg, reached an altitude of 34,000 feet before accelerating to supersonic speeds.
the test flight was to check key systems before taking XB-1 to supersonic speeds on her three General Electric J85 turbojets ...