Tag Archives: Lockheed YF-12 Blackbird

In 1967 the NASA intiated an ambitious “coldwall” research project supported by Langley Research Center. In the project, NASA YF-12s flew carrying the so-called ”coldwall” heat transfer pod on a pylon beneath the forward fuselage to Sustained heat produced by cruising at Mach 3 A stainless steel tube equipped with …

In March 1960, even before delivery of the first A-12 prototype, Lockheed and the U.S. Air Force (USAF) discussed the development of an interceptor version of the A-12. Lockheed started development of the Lockheed YF-12 interceptor, as a lower-cost replacement for the F-108 Designed as the AF-12 under project Kedlock, the …