droop compensator

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droop compensator — A mechanism in the helicopter engine to prevent the rotor speed from decreasing as the load is applied to the engine. A linkage between the collective pitch control and the turbine speed governor that adjusts for the increased load the rotor… … Aviation dictionary
droop — i. A downward curvature of the leading edge of an airfoil to provide increased camber. ii. A progressive decrease in RPM that occurs when a fuel control flyweight governor spring is extended and made weaker. It takes less fly weight force to come … Aviation dictionary
PID controller — A block diagram of a PID controller A proportional–integral–derivative controller (PID controller) is a generic control loop feedback mechanism (controller) widely used in industrial control systems – a PID is the most commonly used feedback… … Wikipedia

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