Summary and Key Points: The idea of converting the SR-71 Blackbird into a bomber ... According to the National Museum of the Air Force, “the fighter version became the YF-12A, but the bomber ...
What You Need to Know: The YF-12 was a high-speed interceptor developed from the A-12, the predecessor of the SR-71 Blackbird ... having new success with the R-7A Semyorka intercontinental ...
In 2013, Lockheed Martin announced development of the successor to the SR-71 Blackbird spy plane. The SR-71 was capable of reaching speeds over three times the speed of sound, and the SR-72 is ...