Internally actuated inlet guide vane for fan section
First Claim
Patent Images
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.
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Abstract
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.
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Citations
19 Claims
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1. A variable inlet guide vane assembly comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A gas turbine engine comprising:
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a turbine section; a combustor section; a compressor section; and a fan section including a plurality of rotor blades rotating with a rotor, and a plurality of circumferentially spaced inlet guide vanes positioned to be upstream of said rotor blades, said inlet guide vanes mounted to pivot to change an angle of the guide vanes relative to an air flow, an actuator for actuating said plurality of inlet guide vanes to change the angle, said actuator being positioned radially inward of said variable 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. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A variable inlet guide vane assembly comprising:
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a plurality of circumferentially spaced inlet guide varies 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; said cam ring has a slot which carries a roller associated with each of the links, and a single slot carries a plurality of said rollers, with one said roller associated with each of the links. - View Dependent Claims (17)
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18. A gas turbine engine comprising:
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a turbine section; a combustor section; a compressor section; a fan section including a plurality of color blades rotating with a rotor, and a plurality of circumferentially spaced inlet guide vanes positioned to be upstream of said rotor blades, said inlet guide vanes mounted to pivot to change an angle of the guide vanes relative to an air flow, an actuator for actuating said plurality of inlet guide vanes to change the angle, said actuator being positioned radially inward of said variable 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; said cam ring has a slot which carries a roller associated with each of the links; and a single slot carries a plurality of said rollers, with one said roller associated with each of the links. - View Dependent Claims (19)
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Specification