William H. Dana makes the 199th, and last, X-15 flight. He reached a speed of Mach 5.38 and an altitude of 255,000 feet. The center's attempt to make a 200th flight was defeated by weather: it snowed.
William H. Dana makes the 199th, and last, X-15 flight. He reached a speed of Mach 5.38 and an altitude of 255,000 feet. The center’s attempt to make a 200th flight was defeated by weather: it snowed.NASA Photo
ECN-1716