Encyclopedia Astronautica
Cold Gas Thruster Module


Parker Bertea nitrogen cold gas thruster. 0.111 kN. In Production. Isp=68s. Designed to provide triaxial attitude control for small launch vehicles. The module comprised three cold gas thrusters operated by integral independent solenoid valves.

The central thruster generates 111.2 N and the two lateral thrusters provide 55.6 N, each when operated with a 136 atm dinitrogen gas supply. Each has an Isp of 68 sec. The solenoid valves are pilot operated and have a response time of <5 millisec at max gas inlet pressure.. Manufacturer: Parker Bertea Aerospace. Operating Pressure Range: 136 - 13.6 atm. Thrust at 136 atm: 4.5 - 111.2 N and 8.9 - 55.6 N. Voltage: 28(4 Vdc. Response Time: 8 millisec max. Mass: 0.086 kg per thruster. Size: 25.4 mm diameter X 63.5 mm per thruster.

Engine: 0.0860 kg (0.1890 lb). Chamber Pressure: 138.00 bar. Thrust to Weight Ratio: 132.55.

Status: In Production.
Unfuelled mass: 0.0860 kg (0.1890 lb).
Height: 0.0635 m (0.2083 ft).
Diameter: 0.0254 m (0.0833 ft).
Thrust: 111 N (25 lbf).
Specific impulse: 68 s.

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Associated Propellants
  • Nitrogen gas Inert cold gases held under pressure and released by valves to create thrust. Inert cold gases held under pressure and released by valves to create thrust. More...

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