Thrusters (spacecraft)


Thruster is a propulsive device used by spacecraft for station keeping, attitude control, in the reaction control system, or long-duration, low-thrust acceleration. A vernier engine or gimbal engine is a particular case used on launch vehicles where a secondary rocket or other high thrust device is used to control the attitude of the rocket while the primary thrust engine is fixed to the rocket and supplies the principal amount of thrust.
Some devices that are use or proposed to use as thrusters are: