In the late 1950s and 1960s, the X-15 pushed the limits of speed and altitude like no aircraft before it. Born under NACA and ...
The North American X-15 was built to flirt with the edge of space, not to cross it by accident. Yet on a research mission labeled Flight 90, a routine test profile slipped just far enough out of ...
An important part of data collection for the United States space program, the North American X-15 had astonishing performance utilizing the technology of the 1950s and 60s. The North American X-15 was ...
As the first major piloted NASA X-plane to fly in a generation and the first crewed, purpose-built U.S. high-speed research ...