The North American Aviation XB-70 Valkyrie is a retired prototype version of the planned B-70 nuclear -armed, deep-penetration supersonic strategic bomber for the United States Air Force Strategic Air …

The Museum’s XB-70A (AV-1) was the first one built and also the first Valkyrie to fly at Mach 3 (about 2,000 mph). After this flight, however, it was limited to Mach 2.5 due to structural concerns.

Nov 11, 2025 · The XB-70 is a prototype of the planned B-70 nuclear bomber—a striking design that earned its place in the history books. North American Aviation developed it in the late 1950s to …

Feb 28, 2014 · The XB-70 Valkyrie, with a planned cruise speed of Mach 3 and operating altitude of 70,000 feet, was to be the ultimate high-altitude, high-speed manned strategic bomber.

Jan 11, 2025 · Seeing the XB-70 Valkyrie up close is a humbling experience—a chance to stand in the shadow of a true marvel of engineering. And for those who want to dive deeper into its story, the …

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.

Mar 13, 2025 · In 1957, North American Aviation won the contract to develop XB-70, a delta-winged behemoth designed to cruise at Mach 3 (over 2,300 miles per hour) and altitudes exceeding 70,000 …

Apr 21, 2025 · Explore the history, design, and legacy of the XB-70 Valkyrie — the world's fastest bomber ever developed by the United States during the Cold War.

North American XB-70 Valkyrie history, specifications, schematics, pictures, and data.

Feb 27, 2025 · The North American XB-70 Valkyrie first flew in prototype form on 21 September 1964. When the first prototype flew it was simultaneously the longest (56.4 m/185 ft), fastest (Mach 3+), …