Gas turbine engine systems involving gear-driven variable vanes
First Claim
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1. A gas turbine engine system comprising:
- a ring gear assembly operative to be mounted within an engine casing, wherein the ring gear assembly comprises a first ring gear and a second ring gear;
a vane module having a first vane airfoil and a first gear, the first gear being operative to engage the ring gear assembly such that movement of at least one of the ring gears alters a position of the first vane airfoil;
wherein the ring gears have opposing gear teeth operative to engage the first gear of the vane module therebetween; and
a compression mechanism including a biasing member operative to bias the ring gears towards each other in a vicinity of the first gear of the vane module.
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Abstract
Gas turbine engine systems involving gear-driven variable vanes are provided. In this regard, a representative gas turbine engine system includes: a ring gear assembly operative to be mounted within an engine casing; and a vane module having a first vane airfoil and a first gear, the first gear being operative to engage the ring gear assembly such that movement of the ring gear alters a position of the first vane airfoil.
40 Citations
15 Claims
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1. A gas turbine engine system comprising:
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a ring gear assembly operative to be mounted within an engine casing, wherein the ring gear assembly comprises a first ring gear and a second ring gear; a vane module having a first vane airfoil and a first gear, the first gear being operative to engage the ring gear assembly such that movement of at least one of the ring gears alters a position of the first vane airfoil; wherein the ring gears have opposing gear teeth operative to engage the first gear of the vane module therebetween; and a compression mechanism including a biasing member operative to bias the ring gears towards each other in a vicinity of the first gear of the vane module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A gas turbine engine comprising:
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a compressor; a combustion section operative to receive compressed air from the compressor; a turbine operative to drive the compressor; a casing operative to encase the turbine; and a gear-driven variable vane system having a ring gear assembly and a vane module, the ring gear assembly being mounted within an interior of the casing and comprising a first ring gear and a second ring gear, the vane module having a first vane airfoil and a first gear, the first gear being operative to engage the ring gear assembly such that movement of the ring gear alters a position of the first vane airfoil; wherein the first ring gear and the second ring gear have opposing gear teeth operative to engage the first gear of the vane module therebetween; a compression mechanism including a biasing member operative to bias the ring gears towards each other in a vicinity of the first gear of the vane module. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification