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A fourth YF-12 aircraft, the "YF-12C", was actually the second SR-71A (AF Ser. No. 61–7951). This SR-71A was re-designated as a YF-12C and given the fictitious Air Force Serial Number 60-6937 from an A-12 to maintain SR-71 secrecy. The aircraft was loaned to NASA for propulsion testing after the loss of YF-12A (AF Ser. No. 60–6936) in 1971.
The YF-12 program was a limited production variant of the A-12. Lockheed convinced the U.S. Air Force that an aircraft based on the A-12 would provide a less costly alternative to the recently canceled North American Aviation XF-108, since much of the design and development work on the YF-12 had already been done and paid for. Thus, in 1960 the ...
The Pratt & Whitney J58 (company designation JT11D-20) is an American jet engine that powered the Lockheed A-12, and subsequently the YF-12 and the SR-71 aircraft. It was an afterburning turbojet engine with a unique compressor bleed to the afterburner that gave increased thrust at high speeds.
YF-681 - damaged in the 10 November 1944 explosion of USS Mount Hood (AE-11) in Seeadler Harbor at Manus Island YFN-685, later YRR-4, YR-89 YFN-699, later YC-1354
Lockheed YF-12, a prototype interceptor aircraft. Topics referred to by the same term This disambiguation page lists articles associated with the title Lockheed interceptor .
Before the test "Snoopy" could fly, the XF-108 program was cancelled, and the proposed Lockheed YF-12 interceptor was to instead receive the radar/missile system pair. Tests of the system were conducted first in 1960 and until 1963 only on the modified B-58, after which the YF-12 took over until the cancellation of the whole program in 1966.
He was the first military pilot to fly the YF-12A interceptor and the SR-71 reconnaissance aircraft. [1] Stephens and Andre after their record setting YF-12A flight in 1965. Stephens flew nearly all jet fighter aircraft of the 1940s and 1950s era from the F-80 Shooting Star to the F-106 Delta Dart. [2]
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