TURBOMACHINE STATOR INCLUDING STAGE OF STATOR VANE ACTUATED BY AUTOMATICALLY ALIGNED ROTARY RING

PROBLEM TO BE SOLVED: To automatically align a ring of a turbomachine stator. SOLUTION: This stator comprises a casing 11 and one stage of variable-pitch stator vane 12 positioned on its outside and moved by an actuator ring 18 supported by the casing, and the ring is connected to the vane 12 by a link 16 in order to actuate the vane simultaneously, in which the casing includes a fixed coaxial rail 24 projecting from an outside surface of the casing, and three circumferentially spaced-apart groups 28 of wheels are constrained to move along the rail, and each group of the wheels is coupled to the ring 18 by a radial guidance arrangement, and each group 26 of the wheels comprises two wheels 34 engaged with the rail 24, and each wheel is mounted to rotate on a radially oriented pin 36 directly mounted on the ring 18. COPYRIGHT: (C)2008,JPO&INPIT