RD-0243

The RD-0243 is a propulsion module composed of an RD-0244 main engine and a RD-0245 vernier engine. Both are liquid rocket engine, burning N2O4 and UDMH. 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.[3] 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'.[1]

RD-0244 (РД-0244)
Country of originUSSR
First flight1981-12-27[1]
DesignerOKB-154[1]
Associated LVRSM-54, Shtil'[1]
StatusRetired
Liquid-fuel engine
PropellantN2O4[1] / UDMH[1]
Mixture ratio2.6[2]
CycleOxidizer Rich Staged combustion[1]
Configuration
Chamber1[2]
Performance
Thrust682 kilonewtons (153,000 lbf)[2]
Chamber pressure27.5 megapascals (3,990 psi)[2]
Specific impulse, vacuum310 s (3.0 km/s)[2]
Specific impulse, sea-level280 s (2.7 km/s)[2]
Burn time74 seconds[2]
Used in
RD-0243 Propulsion Module[3]
RD-0245 (РД-0245)
Country of originUSSR
First flight1981-12-27[1]
DesignerOKB-154[1]
Associated LVRSM-54, Shtil'[1]
StatusRetired
Liquid-fuel engine
PropellantN2O4[1] / UDMH[1]
Mixture ratio2.6[4]
CycleGas Generator[1]
Configuration
Chamber4[4]
Nozzle ratio14
Performance
Thrust211 kilonewtons (47,000 lbf)[4]
Chamber pressure14.7 megapascals (2,130 psi)[4]
Specific impulse, vacuum300 s (2.9 km/s)[4]
Specific impulse, sea-level280 s (2.7 km/s)[4]
Burn time79 seconds[4]
Used in
RD-0243 Propulsion Module[3]

See also

References
  1. "RD-0243, RD-0244, RD-0245. Sea-based missile RSM-54". KBKhA. Retrieved 2015-06-18.
  2. "RD-0244". Encyclopedia Astronautica. Archived from the original on 2015-08-24. Retrieved 2015-06-18.
  3. "RD-0243". Encyclopedia Astronautica. Archived from the original on 2015-08-24. Retrieved 2015-06-18.
  4. "RD-0245". Encyclopedia Astronautica. Archived from the original on 2015-08-24. Retrieved 2015-06-18.
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