- A mechanical linkage between the cockpit throttle and the engine throttle of a helicopter. The correlator automatically rolls some throttle on and off as the collective is raised and lowered. The pilot does not feel the twist grip move, as the correlator is connected later on in the linkage. See also correlation box.
Aviation dictionary. 2014.
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correlation box — A component in the reciprocating engine control for a helicopter that automatically opens or closes the throttle, depending on whether the collective pitch lever is raised or lowered. The final adjustment of RPM, however, is done by the twist… … Aviation dictionary