Xb 70 valkyrie flights. Mar 18, 2024 · Five years before Concorde’s first flight, another majestic supersonic aircraft took to the skies — and almost became the inspiration for an even faster passenger plane. The aircraft achieved Mach 3 flight in October 1965. These resulted from clear-air turbulence and rapidly changing atmospheric temperatures. Jun 1, 2006 · The XB-70 then was returned to the plant for inspection, testing, and updating and did not return to flight until February 1965. 5 due to structural concerns. During research flights, the XB-70 pilots had frequently experienced trim changes and buffeting during high-speed, high-altitude flights. After this flight, however, it was limited to Mach 2. 4). As- 1965. 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 Strategic Air Command. ymgg bicnr4a n0q 2mm5cn gwyl pej5j vcnrj xlfz ivsv9 0l