With the X-15 under its right wing, the Boeing NB-52A, 52-003, takes of from Edwards Air Force Base, 17 July 1962. The rocketplane’s belly is covered with frost from the cryogenic propellants. (U.S. Air Force)
Boeing NB-52A take off with X-15 No. 3 (S/N 56-6672) on July 17, 1962, when Maj. White flew to an altitude of 314,750 feet. The NB-52A was named “The High and Mighty One” at this time. Note the X-15 mission markings on the fuselage just forward of the wing. The horizontal ones are for unpowered flights and the near vertical marks for powered flights. (U.S. Air Force photo)