YF-40 Designer: Beijing Wan Yuan Industry Corp. Propellants: N2O4/UDMH. Thrust(vac): 49.000 kN (11,015 lbf). Thrust(sl): 43.200 kN (9,712 lbf). Isp: 295 sec. Isp (sea level): 260 sec. Burn time: 135 sec. Diameter: 1.45 m (4.75 ft). Chambers: 1. Thrust to Weight Ratio: 0.00. Country: China. Status: Out of production. First Flight: 1988. Last Flight: 1990. Flown: 4.00. YF-40 used on Rocket Stages Used on stage: CZ-4A-3. on launch vehicle: CZ-4A.                   Contact us with any corrections, additions, or comments. Conditions for use of drawings, pictures, or other materials from this site.. To contact astronauts or cosmonauts. © Mark Wade, 1997 - 2007 except where otherwise noted.

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