The XB-70 Valkyrie was born from a simple Cold War idea: fly so high and fast that nothing could touch you. North American’s ...

The only remaining XB-70 Valkyrie superbomber is on display at the National Museum of the U.S. Air Force in Dayton, Ohio. The Cold War-era prototype variant of the planned B-70 nuclear-armed strategic ...

What You Need to Know: The North American XB-70 Valkyrie was an ambitious supersonic bomber designed to replace the B-52, capable of flying at Mach 3 and 70,000 feet. With six powerful engines and a ...

The North American XB-70 Valkyrie embodied a once-dominant creed: outrun defenses at Mach 3 and 70,000 feet. -The prototype proved the physics—compression-lift wingtips, hot-structure skins, 172,000 ...