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Engine Model: YF-22. Designer: Beijing Wan Yuan. Propellants: N2O4/UDMH. Thrust(vac): 717.800 kN (161,368 lbf). Thrust(sl): 632.700 kN (142,237 lbf). Isp: 295 sec. Isp (sea level): 260 sec. Diameter: 1.00 m (3.20 ft). Chambers: 1. Thrust to Weight Ratio: 0.00. Country: China. Status: In Production.

Engine Model: YF-22/23. Designer: Beijing Wan Yuan. Propellants: N2O4/UDMH. Thrust(vac): 762.000 kN (171,304 lbf). Thrust(sl): 697.400 kN (156,782 lbf). Isp: 295 sec. Isp (sea level): 270 sec. Burn time: 127 sec. Diameter: 3.35 m (10.99 ft). Chambers: 1. Chamber Pressure: 71.00 bar. Area Ratio: 10.00. Country: China. Status: Out of production. First Flight: 1972. Last Flight: 1981. Flown: 12.

Cluster of YF-22 and 4 x YF-23 verniers.

Engine Model: YF-22A/23A. Designer: Beijing Wan Yuan. Propellants: N2O4/UDMH. Thrust(vac): 762.000 kN (171,304 lbf). Thrust(sl): 697.400 kN (156,782 lbf). Isp: 295 sec. Isp (sea level): 270 sec. Burn time: 130 sec. Diameter: 3.35 m (10.99 ft). Chambers: 1. Chamber Pressure: 71.00 bar. Area Ratio: 10.00. Country: China. Status: Out of production. First Flight: 1975. Last Flight: 2006. Flown: 48.

Cluster of YF-22A and 4 x YF-23 verniers.

Engine Model: YF-22B. Designer: SAST. Propellants: N2O4/UDMH. Thrust(vac): 742.000 kN (166,808 lbf). Burn time: 127 sec. Country: China.

YF-22 used on Rocket Stages
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