correlation box

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 grip, as the correlation box functions according to ISA (International Standard Atmosphere) and not nonstandard atmospheric conditions. See also correaltor.
Mentioned in ?
References in periodicals archive ?
Correlogram of auto correlation (AC) and partial auto correlation Box and Jenkins [9] based on the graphical tools whereas the unit root test is a mathematical approach to check the stationarity of the time series data.