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 …

In the mid-1950s, the USAF wanted a radically advanced new bomber that could fly much faster (Mach 3+ or 2,000 mph) and higher (70,000+ feet) than the B-52 it would replace. The …

Strategic Air Command drew up its B-70 plans a half-century ago, the Valkyrie was projected to become the centerpiece of the most advanced fleet of manned bombers ever assembled. The …

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. …

Feb 11, 2021 · In June 1963, Popular Mechanics took a closer look at the controversial B-70 supersonic bomber. Two years prior, President John F. Kennedy cancelled the program due to …

The Air Force requirement was for a Mach 3, high-altitude, long-range bomber capable of carrying nuclear and conventional weapons. Although there was a technology breakthrough in 1957 …

Oct 17, 2014 · The B-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.

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 …

Nov 29, 2020 · We have often written about the XB-70 Valkyrie, With a cruise speed of Mach 3 and operational altitude of 70,000 feet, that should have granted the bomber a near …

Nov 27, 2020 · Named Valkyrie, after the female battle spirits of Norse mythology, the bomber was built to penetrate Soviet air defenses in a nuclear war and deliver thermonuclear bombs …