: Roughly 85% of the airframe was titanium, which could withstand the 600°F (315°C) surface temperatures.
To survive the extreme heat generated by friction at Mach 3+, the aircraft required radical design solutions:
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). 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
: Fuselage panels were designed to fit loosely on the ground to allow for expansion during high-speed flight. This caused the aircraft to leak JP-7 fuel while stationary. : Roughly 85% of the airframe was titanium,
: On July 28, 1976, it set absolute records for speed (2,193.167 mph) and altitude (85,068.997 feet).
: Its Pratt & Whitney J58 engines acted as a turbojet-ramjet hybrid, becoming most efficient at speeds above Mach 3. Service Ceiling : 85,000 feet (approx
: 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