The Lockheed YF-12 was an American prototype interceptor aircraft evaluated by the United States Air Force. The YF-12 was a twin-seat version of the secret single-seat Lockheed A-12 reconnaissance aircraft, which led to the U.S. Air Force's Lockheed SR-71 Blackbird twin-seat reconnaissance variant. The YF-12 set and held speed and altitude world records of over 2,000 mph and over 80,000 ft (later surpassed by the SR-71), and is the world's largest manned interceptor to date.
| Attributes | Values |
|---|---|
| rdfs:comment |
|
| designer | |
| manufacturer | |
| number built |
|
| predecessor | |
| successor | |
| type | |
| unit cost ($) |
|
| is successor of |