The experimental legacy of the iconic XB-70 Valkyrie, which made its first flight on Sept. 21, 1964. An article published on the U.S. Air Force website commemorates the 60th anniversary of the ...

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It was the XB-70 Valkyrie, an experimental plane developed for the US Air Force. Its inaugural flight — 60 years ago in September 1964 — kicked off a golden era for supersonic aircraft.

It was the XB-70 Valkyrie, an experimental plane developed for the US Air Force. Its inaugural flight — 60 years ago in September 1964 — kicked off a golden era for supersonic aircraft.

As you report for your first day of work with visions of the magnificent XB-70 Valkyrie strategic bomber streaking through your head, you are informed that you’ll instead be assigned to an odd ...

On Sept. 21, 1964, the XB-70 Valkyrie, the most advanced American bomber of its era made its maiden flight in clear blue skies over the Mojave Desert.

On Sept. 21, 1964, the XB-70 Valkyrie, the most advanced American bomber of its era made its maiden flight in clear blue skies over the Mojave Desert. The plane’s design was so advanced, many of ...

The XB-70 shed a part of its leading edge when the aircraft returned to flight, and the first prototype was then limited to just Mach 2.5. The second aircraft was cleared to fly at Mach 3.

By the Valkyrie's 1964 first flight, the Soviet Union had been building its S-75 Dvina surface-to-air missile system for seven years. It more than matched the XB-70's speed and altitude performance.