Encyclopedia Astronautica
MR-501B



mr501b.jpg
MR-501B
Credit: Aerojet Redmond
Redmond Hydrazine rocket engine. 369 mN. BSAT-2 communications satellite. In Production. Electrothermal hydrazine thruster (EHT). 493 W input power at 24 V DC. Isp=303s.

Application: BSAT-2 communications satellite.

Engine: 0.89 kg (1.96 lb). Restarts: 500000.

Status: In Production.
Unfuelled mass: 0.89 kg (1.96 lb).
Height: 0.20 m (0.65 ft).
Diameter: 0.10 m (0.33 ft).
Thrust: 0.37 N (0.08 lbf).
Specific impulse: 303 s.
Burn time: 14,000 s.

More... - Chronology...


Associated Countries
See also
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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