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A fourth YF-12 aircraft, the "YF-12C", was actually the second SR-71A (AF Ser. No. 61–7951). This SR-71A was re-designated as a YF-12C and given the fictitious Air Force Serial Number 60-6937 from an A-12 to maintain SR-71 secrecy. The aircraft was loaned to NASA for propulsion testing after the loss of YF-12A (AF Ser. No. 60–6936) in 1971.
The YF-12 program was a limited production variant of the A-12. Lockheed convinced the U.S. Air Force that an aircraft based on the A-12 would provide a less costly alternative to the recently canceled North American Aviation XF-108, since much of the design and development work on the YF-12 had already been done and paid for. Thus, in 1960 the ...
The General Atomics YFQ-42 is an unmanned combat aerial vehicle (UCAV) currently under development by General Atomics Aeronautical Systems.The aircraft is one of the winning designs for Increment I of the United States Air Force's Collaborative Combat Aircraft (CCA) program and is intended to augment crewed fighter aircraft such as the F-22 Raptor, F-35 Lightning, and the planned Next ...
The Lockheed CL-1201 was a design study by Lockheed for a large 6,000-ton nuclear-powered transport aircraft in the late 1960s. One envisioned use of the concept was as an airborne aircraft carrier. [1]
The D-21 was initially designed to be launched from the back of an M-21 carrier aircraft, a variant of the Lockheed A-12 aircraft. The drone had maximum speed in excess of Mach 3.3 (2,200 miles per hour; 3,600 kilometers per hour) at an operational altitude of 90,000 feet (27,000 meters). Development began in October 1962.
YFU-79, later Baylander (IX-514), converted to a helicopter Landing Ship in 1986 for pilot training, nicknamed the "world's smallest aircraft carrier" YFU-81, transferred to Panama YFU-82, later IX-506
YF-17 Cobra: Prototype fighter aircraft Northrop: The YF-17 was the culmination of several Northrop designs, beginning with the N-102 Fang; continuing through the F-5 family. 1974 Never 2 F-15E Strike Eagle: Multirole strike fighter: McDonnell Douglas(1985–1997) Boeing Defense, Space & Security(1997–present) Evolution of the F-15 Eagle 1986 ...
In December 2014, NASA awarded Lockheed Martin a contract to study the feasibility of building the SR-72's propulsion system using existing turbine-engine technologies, The $892,292 (~$1.13 million in 2023) contract funded a design study to determine the viability of a TBCC propulsion system by combining one of several current turbine engines, with a very low Mach ignition Dual Mode Ramjet (DMRJ).