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 first ...

Designed to fly above 70,000 feet at three times the speed of sound, the XB-70 Valkyrie was meant to be the ultimate strategic bomber. Despite groundbreaking materials, aerodynamics, and proposed ...

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. It was the XB-70 Valkyrie, an ...

At Mach 3, you travel about 3,000 feet per second. That's over half a mile (or 10 football fields). And at 70,000 feet, you're twice as high as the average airliner. Only a handful of aircraft have ...