North American XB-70 Valkyrie. 70,000 feet and 3 x the speed of sound

This video includes take off with 6 afterburners, a missed approach and a touch and go landing. The North American Aviation XB-70 Valkyrie was the prototype of the proposed B-70 nuclear-armed deep-penetration strategic bomber for the United States Air Force’s Strategic Air Command. Designed in the late 1950s, the Valkyrie was a large six-engined aircraft able to fly Mach 3 at an altitude of 70,000 feet , which would have allowed it to avoid interceptors. The Valkyrie was designed to be a high-altitude Ma