Abstract: A device for adjusting the power of a power pack driving a helicopter rotor, including a device for dosing the fuel feed rate. An electronic control device is further provided that acquires an input signal corresponding to the rotational speed of the rotor. A processor processes the input signal by using a differentiating element and a summing element. Further, a threshold comparator receives the output signal of the processor and an actuating device receives the output signal of the electronic control device and actuates the device for dosing the fuel feed rate.

Abstract: The invention concerns a device for adjusting the power of a power pack driving a helicopter rotor, comprising means for dosing the fuel feed rate. The invention is characterised in that it further comprises: an electronic control device (1) including means (8) acquiring an input signal corresponding to the rotational speed of the rotor NP, means for processing said input signal comprising a differentiating element (11) and a summing element (13) and a threshold comparator (15) receiving the output signal of said processing means and an actuating device (2) receiving the output signal of the electronic control device (1) and actuating the means (3) dosing the fuel feed rate.