Encyclopedia Astronautica
MR-120



mr120.jpg
MR-120
Credit: Aerojet Redmond
Redmond Hydrazine rocket engine. 0.090 kN. Small ICBM. In Production. Developed as an attitude control thruster for the small ICBM. Isp=229s.

Application: Small ICBM.

Engine: 0.41 kg (0.90 lb). Chamber Pressure: 12.40 bar. Area Ratio: 15. Restarts: 1911.

Status: In Production.
Unfuelled mass: 0.41 kg (0.90 lb).
Height: 0.15 m (0.49 ft).
Diameter: 0.0420 m (0.1370 ft).
Thrust: 90 N (20 lbf).
Specific impulse: 229 s.
Burn time: 150 s.

More... - Chronology...


Associated Countries
See also
Associated Launch Vehicles
  • SICBM American mobile small intercontinental ballistic missile. Developed 1986-1991, but cancelled as unnecessary at the end of the Cold War. More...

Associated Manufacturers and Agencies
  • Redmond American manufacturer of rocket engines. Redmond, USA. More...

Associated Propellants
  • Hydrazine Hydrazine (N2H4) found early use as a fuel, but it was quickly replaced by UDMH. It is still used as a monopropellant for satellite station-keeping motors. Hydrazine (N2H4) found early use as a fuel, but it was quickly replaced by UDMH. It is still used as a monopropellant for satellite station-keeping motors. More...

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