RD-170
Type: Lower Stage Engine
Country of Origin: Soviet Union
Manufacturer: NPO Energomash
First Flight: April 13, 1985
Status: Retired
Propellant (O/F): Liquid Oxygen/Kerosene
Mixture Ratio (O/F by mass): 2.63
Cycle: Staged Combustion
Chambers: 4
Thrust (vac.): 7904 kN; 8180 kN (RD-171)
Thrust (s.l.): 7257 kN
Throttle: 40% to 100%
ISP (vac.): 337 s
ISP (s.l.): 309 s
Chamber Pressure: 3556 psi
Nozzle Ratio: 36.87
Burn time: 150 sec
Ignitions: 1
Mass: 10,750 kg
Length: 4.0 m
Diameter: 3.8 m
Used in: Energia, Zenit (as RD-171)
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