Engine Model: YF-73. Designer: Beijing Wan Yuan. Propellants: Lox/LH2. Thrust(vac): 11.000 kN (2,472 lbf). Isp: 425 sec. Burn time: 800 sec. Mass Engine: 236 kg (520 lb). Diameter: 0.56 m (1.85 ft). 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 development. First Flight: 1984. Last Flight: 2000. Flown: 52. Gas-generator turbopump. Gimballed engine.
YF-73 used on Rocket Stages
