The futuristic XB-70A was originally conceived in the 1950s as a high-altitude, nuclear strike bomber that could fly at Mach 3 (three times the speed of sound) – any potential enemy would have been ...

In the middle years of the Cold War, the US government encouraged the development of supersonic airliners through the National Supersonic Transport program. NASA Flight Research Center, now Armstrong ...

As a result, in 1961, the expensive B-70 bomber program was canceled before any Valkyries had been completed or flown. Even so, the U.S. Air Force (USAF) bought two XB-70As which were used for flight ...

On October 14, 1965, the North American XB-70 Valkyrie exceeded Mach 3 for the first time, showcasing the remarkable speed and innovation of America's experimental supersonic bomber.

GE won a contract for the J93 propulsion system of the North American XB-70 Valkyrie supersonic bomber in 1957. The highly-advanced, lightweight single-shaft turbojet engine incorporated variable ...