The Insane Engineering of the SR-71 Blackbird
The Lockheed SR-71 "Blackbird" is a long-range, high-altitude, Mach 3+ strategic reconnaissance aircraft developed and manufactured by the American aerospace company Lockheed Corporation.[N 1] It was operated by the United States Air Force (USAF) and NASA.
2020-04-18 19:00:00 - Real Engineering