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|Country of origin||China|
|Manufacturer||China Academy of Launch Vehicle Technology (CALT)|
|Status||In service & development|
|Propellant||Liquid oxygen / Liquid hydrogen|
|Thrust (vac.)||78.45 kilonewtons (17,640 lbf)|
|Chamber pressure||37.6 bars (3,760 kPa)|
|Isp (vac.)||437 seconds (4.29 km/s)|
|Burn time||470 seconds (7.8 min)|
|Length||2.8 metres (9 ft 2 in)|
|Diameter||1.5 metres (4 ft 11 in)|
|Dry weight||550 kilograms (1,210 lb)|
|Long March 3A, Long March 3B and Long March 3C,all in 3rd stage|
The YF-75 is China's second generation of cryogenic gimballed engine, using liquid hydrogen (LH2) fuel and liquid oxygen (LOX) oxidizer. Its development began in the early 1990s and its first flight was in 1994.
- "YF-25". Encyclopedia Astronautica. Retrieved 6 November 2013.
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