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