Strategic Reconnaissance aircraft
The Lockheed SR-71 "Blackbird" was an advanced, long-range, Mach 3+ strategic reconnaissance aircraft. It was developed as a black project from the Lockheed A-12 reconnaissance aircraft in the 1960s by Lockheed and its Skunk Works division. Wikipedia Top speed: 2,200 mph (3,540 km/h)
Introduced: 1966
Retired: 1998
Unit cost: 33,000,000–33,000,000 USD (1966)
Engine type: Pratt & Whitney J58
Designer: Kelly Johnson
Manufacturers: Lockheed Corporation, Skunk Works
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