The YF-77 is China's first cryogenic rocket engine developed for booster applications. It burns liquid hydrogen fuel and liquid oxygen oxidizer using...

of the second flight's failure to be located in one of the core stage's YF-77 engines (specifically, in the oxidizer's turbo-pump). The Y3 mission of...

The Lockheed/Boeing/General Dynamics YF-22 is an American single-seat, twin-engine, stealth fighter technology demonstrator prototype designed for the...

Active  China YF-73 Gas-generator Upper stage Retired YF-75 Gas-generator Upper stage Active YF-75D Expander cycle Upper stage Active YF-77 Gas-generator...

The YF-90 is a liquid cryogenic rocket engine burning liquid hydrogen and liquid oxygen in a staged combustion cycle. It is China's first hydrogen-oxygen...

the fuel. The upper stages (third stage) of Long March 3 rockets use YF-73 and YF-75 engines, using liquid hydrogen (LH2) as the fuel and liquid oxygen...

and United States Navy pilots evaluated the MiG-21, redesignated as the "YF-110", in a variety of situations. The aircraft was referred to as "The Doughnut"...

training systems. First flown in 1997, the F-22 descended from the Lockheed YF-22 and was variously designated F-22 and F/A-22 before it formally entered...

ex-YF-429 YCK-10, ex-YF-430 YCK-11, ex-YF-431 YCK-12, ex-YF-432 YCK-13, ex-YF-433 YCK-14, ex-YF-434 YCK-15, ex-YF-435 YCK-16, ex-YF-436 YCK-17, ex-YF-437...

41 265 34 6.0 YF-77  China AALPT Long March 5 Active 1st LH2 / LOX Gas generator 428 316.7 (SL) 700,000 518,000 (SL) 102 1,054 50 5.5 YF-79  China AALPT...