The North American X-15 and the Lockheed A-12 Oxcart stand among the most extraordinary aircraft ever developed in the United States, representing two different but overlapping paths into the extreme frontiers of speed, altitude, and aerospace
North American X-15 and the Lockheed A-12 Oxcart
The A-12 Oxcart was conceived as a clandestine reconnaissance machine capable of outrunning enemy defenses and photographing hostile territory at unprecedented speeds and altitudes.