North American Aviation's X-15 rocket plane flew at Mach 6.
72 and at altitudes above 67 miles -- at the threshold of space.
The men who piloted this amazing plane became the USAF's first astronauts.
Powered by an XLR-99 engine capable of producing 70, 000 pounds of thrust at peak altitude, the X-15 pushed the flight envelope for manned aircraft past the post office.
Notably, both Apollo astronaut Neil Armstrong and Space Shuttle commander Joe Engle piloted the X-15.
Originally published by North American for the USAF and later NASA, this Flight Operating Handbook represents a 1963 update of the original version first printed in 1961.
Just recently declassified, it provides a revealing look into one of history's great planes.
Also included in this edition is a rare X-15 rescue manual made for the plane's ground crew.
Please note: due to the archival nature of some portions of the original documents, image and text quality may vary.
Care has been taken to preserve the integrity of the text.
Note | Due to the archival nature of some portions of the original documents image and text quality may vary |
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