Difference between revisions of "Perturbation"
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Perturbation
</dt>
1. Any departure introduced into an assumed steady
state of a system, or a small departure from a nominal path such as a
desired trajectory. Usually used as equivalent to small
perturbation.
</dd>
2. Specifically, a disturbance in the regular motion of a celestial
body, the result of a force additional to that which causes the regular
motion, specifically, a gravitational force. [[/a>|/a>
]]
References
This article is based on NASA's Dictionary of Technical Terms for Aerospace Use
