Key Points and Summary on the XB-70 - The North American XB-70 Valkyrie was a magnificent but doomed attempt to create a Mach 3 strategic bomber to replace the B-52. -This revolutionary aircraft, with ...

Despite its technical triumphs and support from aviators, the XB-70’s operational future unraveled almost as quickly as it took flight. What You Need to Know: The North American XB-70 Valkyrie ...

Summary: The Air Force’s XB-70 “Valkyrie” supersonic bomber was designed to replace the B-52 Stratofortress with its advanced speed, capable of reaching Mach 3. -However, the program was canceled by ...

Article Summary - 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 Mach 3 giant pushed materials, aerodynamics, and engines ...

It took just three seconds last June for the U.S. to lose two ace test pilots and more than $700 million worth of aircraft when the Air Force’s XB-70 Valkyrie, a supersonic flying laboratory, collided ...