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 …

Higher and Faster: B-70 Bomber Concept. 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+ …

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 …

2024年8月29日 · T he North American Aviation XB-70 Valkyrie was a planned supersonic strategic bomber replacement for the Boeing B-52 Stratofortress and the Corvair B-58 Hustler. …

2020年11月29日 · 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 …

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 full B-70 program was canceled on Dec. 1, 1959. Pentagon officials authorized the production of a single B-70 to serve as a research vehicle, to salvage something from the …

B-70 Valkyrie With research and development studies beginning in 1955, the XB-70 was a large, long-range strategic bomber was planned to be the replacement for the B-52. As in the B-58 …

2014年10月17日 · 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 …

2020年11月23日 · Yet, politics, money, and technological advancements put an end to the B-70 Valkyrie, a Mach 3+, nuclear-capable super-bomber. Those varying factors 'killed the dream' …