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RD-0243
The RD-0243 (Russian: Ракетный Двигатель-0243, romanized: Raketnyy Dvigatel-0243, lit. 'Rocket Engine 0243') is a propulsion module composed of an RD-0244 main engine and a RD-0245 vernier thruster. Both are liquid-fuel rocket engines, burning a hypergolic mixture of unsymmetrical dimethylhydrazine (UDMH) fuel with dinitrogen tetroxide (N2O4) oxidizer. The RD-0244 main engine operates in the oxidizer rich staged combustion cycle, while the vernier RD-0245 uses the simpler gas generator cycle. Since volume is at a premium on submarine launches, this module is submerged on the propellant tank. Its development period was from 1977 to 1985, having had its first launch on December 27, 1981. Originally developed for the RSM-54, it was used later for the Shtil'.
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RD-0243
The RD-0243 (Russian: Ракетный Двигатель-0243, romanized: Raketnyy Dvigatel-0243, lit. 'Rocket Engine 0243') is a propulsion module composed of an RD-0244 main engine and a RD-0245 vernier thruster. Both are liquid-fuel rocket engines, burning a hypergolic mixture of unsymmetrical dimethylhydrazine (UDMH) fuel with dinitrogen tetroxide (N2O4) oxidizer. The RD-0244 main engine operates in the oxidizer rich staged combustion cycle, while the vernier RD-0245 uses the simpler gas generator cycle. Since volume is at a premium on submarine launches, this module is submerged on the propellant tank. Its development period was from 1977 to 1985, having had its first launch on December 27, 1981. Originally developed for the RSM-54, it was used later for the Shtil'.