YF-75

The YF-75 is a liquid cryogenic rocket engine burning liquid hydrogen and liquid oxygen in a gas generator cycle. It is China's second generation of cryogenic propellant engine, after the YF-73, which it replaced. It is used in a dual engine mount in the H-18 third stage of the Long March 3A, Long March 3B and Long March 3C launch vehicles. Within the mount, each engine can gimbal individually to enable thrust vectoring control. The engine also heats hydrogen and helium to pressurize the stage tanks and can control the mixture ratio to optimize propellant consumption.

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cryogenic rocket engine, YF-series rocket engine, 
China, cryogenic rocket engine, Dong Fang Hong 2, Ekran, D, YF-series rocket engine, 

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  YF-75D ⓘ
  Chinese cryogenic rocket engine

Frameless

Type	Subtype	Date	Description	Notes	Source
class	rocket engine		YF-75D	YF-75,	Wikidata