Cold Gas Thrusters

For making changes in the attitude (or position) of the satellites, considering the level of change and its kind, different actuators can be used. This actuators, by the use of Action and Reaction Principle (Newton’s second principle), can import force to the satellite without relying on any surface. One of the most important of such actuators are thrusters in which after the exit of gas from a nozzle, necessary momentum for rotation (or movement) of satellite is provided. Due to the country’s need and in order to achieve to the designing and manufacturing technology of such actuators, Space Research Laboratory has begun designing and making samples of such actuators in order to be used in micro level satellites. The property of such a model is mentioned in the following table.

Propulsion subsystem in a satellite is made up of different components whose most important parts are: cold gas tank, regulator, accumulator and thruster (including body, solenoid and nozzle)

  • It can be used as attitude control actuator on satellites

  • Different control algorithms can be tested by using it

  • The possibility of installing and testing on “HAGH 100” & “HOJAT 100” systems

  • The possibility of installing and testing on “HAGH 100” & “HOJAT 100” systems

  • Smaller dimensions and lower weight in recent samples

Cold Gas Thruster
Operating Pressure 15 bar
Proof Pressure 40 bar
Thrust Rating 1.1 N @ 15 bar
Operating Voltage Range 21 ± 5 VDC
Thermal Capability -40˚C to +60˚C
Coil Resistance 1 Ω @ 21°C
Response Time < 10 msec
Cycle Life > 10000
Mass 84 gr
Body Length 31.48 mm
Outside Diameter 22.50 mm
Accessories of Cold Gas Thruster
Composite Tank
Operating Pressure 30 MPa
Proof Pressure 50 MPa
Volume 9.0 L
Mass 4.8 kg
Regulator
Type Single – Stage EXACT
Inlet Pressure < 300 bar
Outlet Pressure 1.5 / 4 / 10 / 20 bar
Flow Capacity CV = 0.15
Mass 1.10 kg
Driver

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2019-03-11T07:03:28+00:00

Contact Info

Space Research Laboratory, Aerospace Engineering Faculty, K. N. Toosi University of Technology, Daneshgah Blvd., Ehsan Exit, East Zeynoddin Highway, Tehran, Iran

Phone: +98 21 77334133

Fax: +98 21 73064234

Web: Spacerl

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