The North American XB-70 Valkyrie, a Cold War-era bomber, was a technological marvel designed to fly at Mach 3 and at 70,000 feet, circumventing Soviet air defenses through speed and altitude ...

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 ...

Five years before Concorde’s first flight, another majestic supersonic aircraft took to the skies — and almost became the inspiration for an even faster passenger plane.

To this day, the fastest bomber on the face of the Earth is a North American design, even though it never actually took to ...

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

Though never mass-produced, the XB-70 provided critical data for future high-speed, high-altitude flight research for NASA and the U.S. Air Force.

This was the North American XB-70 Valkyrie. The XB-70 was a Mach 3 prototype that would have led to the B-70 bomber, creating the fastest strategic bomber in the world.

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.