Internally actuated inlet guide vane for fan section

摘要

A variable inlet guide vane assembly includes a plurality of circumferentially spaced inlet guide vanes mounted to pivot to change an angle of the guide vanes relative to an air flow. An actuator actuates the plurality of inlet guide vanes to change the angle, and is positioned radially inward of the inlet guide vanes.

主权项

1. A variable inlet guide vane assembly comprising:
a plurality of circumferentially spaced inlet guide vanes mounted to pivot and change an angle of the guide vanes relative to an air flow; an actuator configured to actuate said plurality of inlet guide vanes to change the angle, said actuator being positioned radially inward of said inlet guide vanes; said actuator driving a cam ring, said cam ring moving a link associated with each of said inlet guide vanes, to change the angle; said actuator driving a piston rod, said piston rod being secured to said cam ring such that said cam ring moves with said piston rod; and there is no actuator radially outward of said inlet guide vanes to provide a smaller envelope.