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A YF-22 in the foreground with a YF-23 in the background The two contractor teams submitted evaluation results and their PSC proposals for full-scale development in December 1990, [ 57 ] and on 23 April 1991, Donald Rice , the Secretary of the Air Force announced that the YF-22 team was the winner. [ 71 ]
YF-23 may refer to: Northrop YF-23 , an American single-seat, twin-engine stealth fighter aircraft technology demonstrator designed for the United States Air Force YF-23 (rocket engine) , a liquid rocket vernier engine, burning N 2 O 4 and UDMH
Taking this one stage further, the clue word can hint at the word or words to be abbreviated rather than giving the word itself. For example: "About" for C or CA (for "circa"), or RE. "Say" for EG, used to mean "for example". More obscure clue words of this variety include: "Model" for T, referring to the Model T.
Move over, Wordle, Connections and Mini Crossword—there's a new NYT word game in town! The New York Times' recent game, "Strands," is becoming more and more popular as another daily activity ...
It is difficult enough finding detailed info on the YF-23. It took multiple references to cover the details in places. But I'm working on combining footnotes from sources I have and can check. There is no real conflict on the interim bomber use. The YF-23 was modified only for display use; believe only the cockpit was modified/updated..
However, the cited books in this article are written by people with direct connections to the YF-23, namely Alfred "Paul" Metz, YF-23 PAV-1 test pilot, and Air Force Materiel Command researchers and archiver, Tony Landis and reputed aviation author Dennis Jenkins. If that is the case, I can upload a non-free thumbnail version under fair use.
However, the cited books in this article are written by people with direct connections to the YF-23, namely Alfred "Paul" Metz, YF-23 PAV-1 test pilot, and Air Force Materiel Command researchers and archiver, Tony Landis and reputed aviation author Dennis Jenkins. If that is the case, I can upload a non-free thumbnail version under fair use.
The YF-23 is a liquid rocket vernier engine, burning N 2 O 4 and UDMH. [5] It is used in along the YF-22 to form the YF-24 and YF-25 propulsion modules. [3] [6] [7 ...