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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 Pratt & Whitney J58 (company designation JT11D-20) is an American jet engine that powered the Lockheed A-12, and subsequently the YF-12 and the SR-71 aircraft. It was an afterburning turbojet engine with a unique compressor bleed to the afterburner that gave increased thrust at high speeds.
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 ...
This list of accidents and incidents involving commercial aircraft includes notable events that have a corresponding Wikipedia article. Entries in this list involve passenger or cargo aircraft that are operating commercially and meet this list's size criteria—passenger aircraft with a seating capacity of at least 10 passengers, or commercial cargo aircraft of at least 20,000 lb (9,100 kg).
Here are some of the memorable images from that cloudless Tuesday morning. Sept. 11 attacks: These iconic images from 9/11 are truly unforgettable September 11 Terrorist Attacks in photos
A National Transportation Safety Board spokesman said that its team will be at the scene on Saturday, and preliminary reports say the Pilatus PC-12/47E aircraft crashed after an “auto pilot ...
Irwin was also a developmental test pilot for the Lockheed YF-12, the Mach 3 fighter-interceptor variant which preceded the SR-71 Blackbird. His first flight of that aircraft was on the day that one of his five children was born. [7] In 1961, a student pilot that Irwin was training crashed the plane they were flying on a training mission.
Merrill Womach (February 7, 1927 – December 28, 2014) was an American undertaker, organist and gospel singer, notable both for founding National Music Service (now Global Distribution Network, Inc. [1]), which provided recorded music to funeral homes across America, and for surviving a Thursday, November 23, 1961 plane crash in Beaver Marsh, Oregon that left him disfigured with third degree ...