Stator vane stage actuated by an automatically-centering rotary actuator ring
AssigneeSnecma
InventorMichel Bouru
Life of this patent
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Abstract
A variable pitch stator vane stage, said vanes being moved by an automatically-centered rotary actuator ring. The casing carries a stationary coaxial annular rail projecting from its outside surface, and circumferentially spaced apart moving equipments are provided that are constrained to move along said rail, each moving equipment being coupled to the actuator ring via a radial guide arrangement.
Claims17
A stage of variable pitch stator vanes, comprising vanes arranged in a casing, said vanes being moved by an actuator ring outside said casing and carried by the casing, and said actuator ring being connected via cranks to the vanes of said stage in order to actuate them simultaneously, wherein said casing has a stationary coaxial annular rail projecting from its outside surface, wherein at least three circumferentially-spaced moving equipments are constrained to move along said rail, and wherein each moving equipment is coupled to said rail by a radial guide arrangement.
Dependencies are inferred from the claim text.