Patent ID: 11891919
Assignee: SAFRAN AIRCRAFT ENGINES
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC B  F  Y | IPC F

Claim 4:
5. A device for controlling the setting of a propeller of a turbomachine comprising an actuator configured to modify a setting angle of the propeller, the device comprising:
a controller,
a first sensor configured to determine a value of a setting angle of the propeller,
a second sensor configured to determine a speed of rotation of the propeller, the controller being configured to:
in a nominal controlling mode, supply a nominal setting command to the actuator, the nominal setting command being a function of a rating setpoint, of the value of the setting angle and of the speed of rotation of the propeller;
in a downgraded controlling mode, supply a downgraded setting command to the actuator, the downgraded setting command being a function of the rating setpoint and of the speed of rotation of the propeller, the downgraded setting command being independent on the value of the setting angle;
the device further comprising a selector configured to select the nominal controlling mode or the downgraded controlling mode of the controller, and supply the nominal setting command or the downgraded setting command that corresponds to the nominal controlling mode or the downgraded controlling mode that is selected to an actuator configured to modify the setting angle,
wherein the actuator changes the setting angle based on the nominal controlling mode or the downgraded controlling mode selected by the selector.