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 …

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. …

Conceived in the 1950s as an intercontinental strategic nuclear bomber, the futuristic Valkyrie instead became a unique test aircraft in the 1960s. Higher and Faster: B-70 Bomber Concept.

Nov 27, 2020 · The Air Force’s XB-70 Valkyrie was the fastest bomber ever developed. What killed it? And could it have been used for another purpose?

Jun 2, 2024 · The XB-70 was the world’s largest experimental aircraft, capable of flying at speeds up to Mach 3 (approximately 2,000 miles per hour) at altitudes of 70,000 feet.

Jan 11, 2025 · Built during the height of the Cold War, the XB-70 was conceived as a supersonic bomber capable of cruising at Mach 3—three times the speed of sound—while delivering …

Its products included the T-6 Texan trainer, the P-51 Mustang fighter, the B-25 Mitchell bomber, the F-86 Sabre jet fighter, the X-15 rocket plane, the XB-70 bomber, the B-1 Lancer, the …

In flight, the XB-70 could lower the outer wing sections 25 degrees for flying from 300 knots to Mach 1.4, or a severe 65 degrees for speeds from Mach 1.4 to Mach 3+. Measuring just a bit …

Nov 10, 2009 · North American Aviation’s XB-70 fulfilled General Curtis E. LeMay’s dream of a bomber that could penetrate the Soviet Union with impunity, carrying enough ordnance to …

Mar 21, 2025 · The XB-70 Valkyrie was mainly built of stainless-steel honeycomb sandwich panels and titanium. It was designed to make use of a phenomenon when the shock wave …