All Images Copyrighted 2012.   All Unauthorized Use Prohibited.
All Images Copyrighted 2012.   All Unauthorized Use Prohibited.
Aircraft Models
Aircraft Models
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WMF - Aircraft Models
YF-12

The Lockheed YF-12 was an American prototype interceptor aircraft, which the United States Air Force evaluated as a development of the highly-secret Lockheed A-12 that also spawned the SR-71 Blackbird.

In the late 1950s the United States Air Force (USAF) sought a replacement for the F-106 Delta Dart. As part of the Long Range Interceptor Experimental (LRI,X) program, the North American XF-108 Rapier, a Mach 3 interceptor, was selected. However, the F-108 was canceled in September 1959. During this time Lockheed's Skunk Works was developing the A-12 spy plane for the Central Intelligence Agency (CIA) under the Oxcart program. Skunk Works' Kelly Johnson proposed a version of the A-12 called AF-12 by the company and the USAF ordered three AF-12s in mid-1960s.