Patent ID: 9090336
Filing Date: 2015-07-28
Classification: B64C,B64D

Abstract:
1. A device for controlling the pitch of the fan blades of a turboprop, the device comprising: at least one set of adjustable pitch fan blades, said set being constrained to rotate with a rotary ring centered on a longitudinal axis of the turboprop and mechanically linked to a rotor; a synchronizing ring centered on the longitudinal axis of the turboprop and coupled to each blade of the set in order to adjust its pitch; and an actuator centered on the longitudinal axis of the turboprop and constrained to rotate with the rotor; wherein the control device further comprises control links, each connected firstly to an actuator rod and secondly to an inside end of a cylindrical shaft via a crank capable of imparting turning movement to the shaft about its axis of revolution, an outside end of the shaft being coupled to a blade in order to adjust its pitch.