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 ...

In the middle years of the Cold War, the US government encouraged the development of supersonic airliners through the National Supersonic Transport program. NASA Flight Research Center, now Armstrong ...

During the Cold War era from the late 1940s to the early 1990s, the skies above Southern California’s Mojave Desert served as a testbed for the newest, biggest, fastest and deadliest military aircraft ...