reaction engine

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reaction engine

[rē′ak·shən ‚en·jən]
(aerospace engineering)
An engine that develops thrust by its reaction to a substance ejected from it; specifically, such an engine that ejects a jet or stream of gases created by the addition of energy to the gases in the engine. Also known as reaction motor.

reaction engine

reaction engineclick for a larger image
Principle of reaction engine.
An engine that works on the principle of Newton's third law of motion: To every action, there is an equal and opposite reaction. All aerospace propulsions are based on this principle.
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