Space Shuttle Main Engine (Boeing Rocketdyne)

SSME

Engine statistics
Specification 1989 (109% thrust) 1998 (Phase II, 109% thrust)
Applications Space Shuttle and future RLVs
Propellants LOX/LH2
Thrust in Vacuum 512,300 lb 512,410 lb
Thrust at Sea Level 408,750 418,130
Isp in vacuum(s) 453.5 454.4
Isp at sea level    
Mixture Ratio 6.0:1 6.0:1
Weight 6,990 lb 6990
Chamber Pressure 3260 psia 3280
Area Ratio 77.5:1 77.5:1
Engine Cycle ????  
Hydrogen Pump Discharge 7040 psia 6860
Oxygen Pump Discharge 8070 psia 8040





























RS-68 : XRS-2200