The North American XB-70 Valkyrie, often dubbed as a supersonic Cold War beast, emerged as a symbol of American aviation prowess during the Cold War. This prototype bomber aircraft commanded attention ...

Key Points and Summary - The North American XB-70 Valkyrie was a "technical marvel" of the 1950s—a Mach 3, 70,000-foot nuclear bomber designed to replace the B-52. -It used a "revolutionary" principle ...