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The SR-71 was the second operational aircraft [44], after the Lockheed A-12, [44], designed to be hard to spot on radar. Early studies in stealth technology indicated that a shape with flattened, tapering sides would reflect most radar energy away from a beam's place of origin, so Lockheed's engineers added chines and canted the vertical ...
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.
28 December 1962: Lockheed signs contract to build six SR-71 aircraft. Earlier in the month, on 17 December the 5th A-12 arrived at Groom Lake and the Air Force expressed an interest in obtaining reconnaissance versions of the Blackbird. Lockheed begins weapons systems development for the AF-12. Kelly Johnson obtained approval to design a Mach ...
The Lockheed Martin SR-72, colloquially referred to as "Son of Blackbird", [1] is an American hypersonic concept intended for intelligence, surveillance and reconnaissance (ISR) proposed privately in 2013 by Lockheed Martin as a successor to the retired Lockheed SR-71 Blackbird. In 2018, company executives said an SR-72 test vehicle could fly ...
Clarence Leonard "Kelly" Johnson (February 27, 1910 – December 21, 1990) was an American aeronautical and systems engineer.He is recognized for his contributions to a series of important aircraft designs, most notably the Lockheed U-2 and SR-71 Blackbird.
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.
LASRE was a small, half-span model of the X-33's lifting body with eight thrust cells of an aerospike engine, rotated 90 degrees and mounted on the back of a Lockheed SR-71 Blackbird aircraft, to operate like a kind of "flying wind tunnel." The experiment focused on determining how a reusable launch vehicle's engine plume would affect the ...
Kelly Johnson, founder of Lockheed Skunk Works, and developer of the U-2 and SR-71 Blackbird family of spy planes, commented on escape crew capsules when discussing development of the YF-12A (Blackbird) ejection seat: "We set ourselves a very high goal in providing crew escape systems. We were determined to develop a system good for zero escape ...