Guide vane stage of a nozzle which is driven by a rotatable ring wherein the ring is offset by electric motors

摘要

The stage has vanes arranged in a casing (11) and moved by a maneuver system comprising a stationary coaxial annular rail (24) secured to the casing and an actuator ring. The ring is connected to the vanes by links (16) and is constrained to move only in simple rotation centered on an axis of a turbomachine. An electrical motor unit (40) is arranged between the rail and the ring, and the ring is guided in rotation about the rail. An independent claim is also included for a turbomachine has a compressor provided with a variable pitch downstream guide vane stage.