constant-speed unit

constant-speed unit (CSU)

constant-speed unit (CSU)click for a larger image
Flyweights which are balanced by the oil pressure, increase or decrease the pitch and maintain propeller speed constant.
An engine-driven unit used for variable-pitch propellers. A CSU automatically permits adjustment of the pitch for varying the speed and power. This allows the propeller to operate more efficiently at any selected combination of RPM, manifold absolute pressure, and air speed.
References in periodicals archive ?
Electric motors have high power-to-weight ratios and, when sized properly, can provide sufficient torque over a wide speed range to replace a multi-speed transmission with a simple constant-speed unit.

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