Turbomachine module equipped with a system for changing the pitch of the blades of a propeller and with a device for feathering the blades

Abstract

The invention relates to a module of a turbomachine of longitudinal axis X, the module comprising: ⋅—a rotary casing () that rotates about the longitudinal axis and bears a propeller () which is provided with a plurality of blades (); ⋅—a fixed casing () comprising a cylindrical wall () extending between an inner wall () and an outer wall () of the rotary casing (); and, ⋅—a system () for changing the pitch of the blades of the propeller, mounted around the fixed casing and comprising: a control means () comprising a movable body () that is able to move axially on said fixed casing, at least one load transfer bearing () comprising an inner ring () that is connected to the movable body (), and an outer ring (); and a connection mechanism () for connecting the outer ring () to the blades of the propeller. According to the invention, the module further comprises a feathering device () for feathering the blades of the propeller, this device () comprising an annular row of springs () that are arranged around said fixed casing and extend axially, the springs () comprising first axial ends () that bear against a ferrule () of the fixed casing, and opposite second axial ends () that bear against said inner ring ().