The X-15 is dropped from the NB-52 at an altitude of 45,000–50,000 feet, at Mach 0.82. (NASA)
North American Aviation X-15 air drop from Boeing NB-52A Stratofortress 52-003
This Day in Aviation
Important Dates in Aviation History
The X-15 is dropped from the NB-52 at an altitude of 45,000–50,000 feet, at Mach 0.82. (NASA)