Actuation system for variable stator vanes

摘要

An actuation system for a plurality of variable stator vanes (74) pivotally mounted in a casing of a compressor (14). The system includes a plurality of levers each having a proximal end (86) and an opposite distal end (88). Each of the proximal ends are fixedly coupled to a corresponding stator vane of the plurality of variable stator vanes for pivoting the corresponding stator vane about a stator vane axis. The system also includes an actuation ring (84) coaxially surrounding the casing adjacent the plurality of levers. The actuation ring is coupled to the distal ends of each of the plurality of levers for pivoting the levers as the actuation ring is rotated about a compressor rotation axis (26). The actuation ring includes a pin (96) extending outward from a radially outward surface (92) of the actuation ring. The system also includes a template (90) comprising a slot (94) for receiving at least a portion of the actuation ring pin. The slot includes a shape configured to guide rotation of the actuation ring about the compressor rotation axis when the template is moved relative to the actuation ring.