: Roughly 85% of the airframe was titanium, which could withstand the 600°F (315°C) surface temperatures.
: The aircraft used its fuel as a heat sink to cool the air-conditioning system and internal components before the fuel was burned. Legacy and Successors Aircraft Report: Lockheed SR-71 Blackbird LockheedSR71Blackbird.rar
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 : Roughly 85% of the airframe was titanium,
: It could survey 100,000 square miles of territory per hour from its cruising altitude. Engineering & Design Innovations Developed by the secretive Lockheed Skunk Works division,
: On July 28, 1976, it set absolute records for speed (2,193.167 mph) and altitude (85,068.997 feet).
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).