North American X-15 in Flight

North American X-15 in Flight

After initial test flights in 1959, X-15s became the first aircraft to reach Mach 4, 5, and 6, and to operate well above 30,500 meters (100,000 feet).

  • 732089

  • Copyright/Owner: NASA
  • Source: NASA Dryden Flight Research Center
  • Public Domain