SR-71 Blackbird
The Lockheed SR-71 is an advanced, long-range, Mach 3 strategic reconnaissance aircraft developed by Lockheed Skunk Works as a Black project. The SR-71 was unofficially named the Blackbird, and called the Habu by its crews, referring to an Okinawan species of pit viper. Clarence “Kelly” Johnson was responsible for many of the design’s innovative concepts. A defensive feature of the aircraft was its high speed and operating altitude, whereby, if a surface-to-air missile launch were detected, standard evasive action was simply to accelerate. The SR-71 was in service from 1964 to 1998 as top secret reconnaissance aircraft. Only 32 SR-71’s were built. Frequently called the Cold War Bird. SR-71 was originally classified as the R-12. Public disclosure of the program and its renaming came as a shock to everyone at the Skunk Works and to Air Force personnel involved in the program. All of the printed maintenance manuals, flight crew handbooks, blueprints, training slides and materials had to be reprinted. A difficult issue with flight at over Mach 3 is the high temperatures generated. As an aircraft moves through the air, the air in front of the aircraft compresses and this heat conducts into the aircraft’s airframe. To help with this, high temperature materials were needed and the airframe was substantially made of titanium, obtained from the USSR, at the height of the Cold War. Lockheed used many guises to prevent the Soviet government from knowing what the titanium was to be …