: Its Pratt & Whitney J58 engines acted as a turbojet-ramjet hybrid, becoming most efficient at speeds above Mach 3.
: It could survey 100,000 square miles of territory per hour from its cruising altitude. Engineering & Design Innovations LockheedSR71Blackbird.rar
The Blackbird was engineered to outrun surface-to-air missiles by cruising at the edge of space. : Mach 3.3 (2,193 mph / 3,529 km/h). Service Ceiling : 85,000 feet (approx. 26,000 meters). : Its Pratt & Whitney J58 engines acted
The Lockheed SR-71 "Blackbird" remains one of the most remarkable feats of aerospace engineering, designed during the Cold War to fly faster and higher than any other manned aircraft. Developed by the secretive Lockheed Skunk Works division, it served as a strategic reconnaissance platform for the USAF and NASA from 1964 until its final retirement in 1999. Key Performance Specifications : Mach 3