Kosberg N2O4/UDMH rocket engine. R-29RM / RSM-54 (SS-N-23) stage 1. Out of Production. Main engine in system RD-0243. Staged combustion cycle. Submerged in propellant tank. First flight 1985.
Status: Out of Production. Date: 1977-85. Thrust: 682.00 kN (153,319 lbf). Specific impulse: 310 s. Specific impulse sea level: 280 s. Burn time: 74 s.
Chamber Pressure: 275.00 bar. Area Ratio: 2. Oxidizer to Fuel Ratio: 2.6.