Tags: Aircraft.

The North American X-15 was a rocket-powered aircraft operated by the United States Air Force and the National Aeronautics and Space Administration (NASA) as part of the X-plane series of experimental aircraft. The X-15 set speed and altitude records in the 1960s reaching the edge of outer space and returning with valuable data used in aircraft and spacecraft design. As of 2014 the X-15 holds the official world record for the highest speed ever reached by a manned powered aircraft.

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