Injection

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Injection

</dt>
1. The introduction of fuel, fuel and air, fuel and oxidizer, water, or other substance into an engine induction system or combustion chamber. </dd>
2. The time following launching when nongravitational forces (thrust, lift, and drag) become negligible in their effort on the trajectory of a rocket or spacecraft. </dd>
3. The process of putting a spacecraft up to escape velocity. [[/a>|/a> ]]

References

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