This page no longer updated from 31 October 2001. Latest version can be found at YF-73

YF-73 -

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Designer: Beijing Wan Yuan Industry Corp. Used on stages: CZ-3-3. Used on launch vehicles: CZ-3. Propellants: Lox/LH2 Thrust(vac): 1,125 kgf. Thrust(vac): 11.00 kN. Isp: 425 sec. Burn time: 800 sec. Mass Engine: 236 kg. Diameter: 0.6 m. Chambers: 4. Chamber Pressure: 25.90 bar. Area Ratio: 40.00. Oxidizer to Fuel Ratio: 5.00. Thrust to Weight Ratio: 4.77. Country: China. Status: In Production. First Flight: 1984. Last Flight: 1997. Flown: 48. Comments: Gas-generator turbopump. Gimballed engine.


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Last update 12 March 2001.
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