Rolls-Royce has begun ground testing AE 1107F engines for the US Army’s FLRAA MV-75 tiltrotor program, according to an Axiom ...
10 Aircraft with Crazy Proportions ...
On its first flight, the XB-70 Valkyrie’s landing gear jammed—and a simple paper clip saved the mission. But nothing could save the aircraft itself. One prototype burned on the runway; the other ...