Reaction Engine

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Reaction Engine

</dt>
An engine that develops thrust by its reaction to a substance ejected from it; specifically, such an engine that elects a jet or stream of gases created by the burning of fuel within the engine. Also called reaction motor. </dd>
A reaction engine operates in accordance with Newton third law of motion, i.e., to every action (force) there is an equal and opposite reaction. Both rocket engines and jet engines are reaction engines. [[/a>|/a> ]]

References

This article is based on NASA's Dictionary of Technical Terms for Aerospace Use