Despite its technical triumphs and support from aviators, the XB-70’s operational future unraveled almost as quickly as it ...

The XB-70 Valkyrie could cruise at Mach 3 ... Kennedy scratched the XB-70 as an actual bomber program - but the aircraft continued to fly for research purposes until February 1969.

contributing to the development of future supersonic aircraft like the Concorde SST. -One prototype now resides at the National Museum of the U.S. Air Force in Dayton, Ohio. XB-70 Valkyrie ...