SSME Plus Propellants: Lox/LH2. Thrust(vac): 3,728.700 kN (838,245 lbf). Thrust(sl): 3,073.900 kN (691,040 lbf). Isp: 467 sec. Isp (sea level): 385 sec. Burn time: 500 sec. Mass Engine: 2,973 kg (6,554 lb). Chambers: 1. Area Ratio: 55.00. Thrust to Weight Ratio: 127.89. Country: USA. Status: Study 1978. SSME Plus used on Rocket Stages Used on stage: VTOHL 45t. on launch vehicle: VTOHL 45t. Used on stage: VTOHL 9t. on launch vehicle: VTOHL 9t.                   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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