The Lockheed YF-12 changed into a prototype plane advanced
by using the Lockheed enterprise inside the late Fifties and early Sixties. The
massive two-individual aircraft changed into built to intercept enemy plane at
Mach three speeds.
trying out of the YF-12 become completed over region fifty
one, the U.S. Air pressure's pinnacle-mystery test and schooling range, placed
in a faraway part of southern Nevada. the various YF-12 flights had been used
to hide the identification of the Lockheed A-12 reconnaissance aircraft, which
turned into being tested on the equal time for the CIA.
The YF-12 made its first flight in 1963, and had a said
pinnacle speed of Mach 3.2 (2,070 mph, or three,330 km/h) at an altitude of
80,000 feet (24,four hundred m). The U.S. Air force subsequently cancelled the
program, but the YF-12 made a number of research flights for the Air force and
NASA till 1978.
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