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A thruster is a spacecraft propulsion device used for orbital station-keeping, attitude control, or long-duration, low-thrust acceleration, often as part of a reaction control system. A vernier thruster or gimbaled engine are particular cases used on launch vehicles where a secondary rocket engine or other high thrust device is used to control the attitude of the rocket, while the primary thrust engine (generally also a rocket engine) is fixed to the rocket and supplies the principal amount of thrust.

Some devices that are used or proposed for use as thrusters are:

• Cold gas thruster
• Electrohydrodynamic thruster, using ionized air (only for use in an atmosphere)
• Electrodeless plasma thruster, electric propulsion using ponderomotive force
• Electrostatic ion thruster, using high-voltage electrodes
• Hall effect thruster, a type of ion thruster
• Ion thruster, using beams of ions accelerated electrically
• Magnetoplasmadynamic thruster, electric propulsion using the Lorentz force
• Pulsed inductive thruster, a pulsed form of ion thruster
• Pulsed plasma thruster, using current arced across a solid propellant
• RF resonant cavity thruster, an electromagnetic thruster using microwaves

See also

• Liquid Apogee Engine – A liquid-propellant rocket used as the primary propulsion device on geostationary orbit satellites.
• Apogee kick motor – A solid-fuel rocket used as the primary propulsion device to circularize satellites inserted into a transfer orbit.

References

1. "Thruster". the Free Dictionary by Farlex. Retrieved 2016-09-21.
2. "thruster". Collins English Dictionary – Complete and Unabridged (Hardcover) (12th ed.). HarperCollins Publishers. 2014. ISBN 9780007522743. Retrieved 2016-09-21.
3. "Basics of flight: Rocket Propulsion". Rocket & Space Technology. Retrieved 2016-09-21.
4. "space Propulsion Systems". Airbus Safran Launchers. Retrieved 2016-09-21.
5. "Thruster". Collins English Dictionary. Retrieved 2016-09-21.

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Electrical propulsion	Electrostatic Colloid thruster Ion thruster Gridded Hall-effect thruster Field-emission electric propulsion Electromagnetic Pulsed inductive thruster Magnetoplasmadynamic thruster Electrodeless plasma thruster Plasma magnet Electrothermal Pulsed plasma thruster Vacuum arc thruster Helicon double-layer thruster Arcjet rocket Resistojet rocket Microwave electrothermal thruster VASIMR Other Atmosphere-breathing electric propulsion High Power Electric Propulsion MagBeam Mass driver
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