Image:Lockheed YF-12.jpg

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Conceived as a triple-sonic interceptor aircraft, the YF-12 had all of the blazing performance of its more famous sister aircraft, the SR-71 Blackbird. On May 1, 1965, the YF-12 set no less than nine world absolute speed and altitude records at Edwards Air Force Base. Among these was a sustained altitude of 80,257 feet and a speed of 2,070 mph. In spite of this performance and operational potential, the aircraft never entered production.

From http://www.edwards.af.mil/gallery/html_pgs/miscaircra2.htm

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current04:21, 16 May 20051,821×1,468 (218 KB)Triddle (Talk | contribs) (Conceived as a triple-sonic interceptor, the YF-12 had all of the blazing performance of its more famous sister aircraft, the SR-71. On May 1, 1965, the YF-12 set no less than nine world absolute speed and altitude records at Edwards AFB. Among these was )

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