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 …

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.

2014年2月28日 · 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 …

2020年11月27日 · 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?

2025年1月11日 · 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 …

The XB-70 program began in 1955 when the United States Air Force (USAF) issued a request for a high-altitude, long-range bomber with a Mach 3 (three times the speed of sound) dash …

2009年11月10日 · 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 …

2021年9月7日 · With its six engines, unique canards, variable geometry wing tips, and capacity to fly at Mach 3, the XB-70 was a sight to see. Today, only one remains in the world — and you …

The XB-70 was designed as a long-range, supersonic-cruise airplane capable of flying at an approximate sustained speed of Mach 3 and an altitude of 70,000 feet. Two airplanes were …

The B-70 bomber program resulted from an Air Force requirement for a high-speed, high-altitude strategic bomber to replace the B-52. North American engineers utilized NACA studies dealing …