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characteristic velocity

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noun Aerospace.
  1. a measure of the effectiveness with which the combustion in a rocket engine produces high temperature and pressure, equal to the exhaust velocity divided by the thrust coefficient.
  2. the total of all velocities a space vehicle must develop to complete a given mission.
  3. an expression of the performance of a propellant or a propulsion system under given operating pressures.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018