Gas turbine engines and related systems involving variable vanes
First Claim
Patent Images
1. A vane assembly for a gas turbine engine comprising:
- a first inner diameter platform having an outer diameter surface and a recess located in the outer diameter surface;
a first outer diameter platform spaced from the first inner diameter platform; and
a variable vane airfoil rotatably attached to and extending between the first inner diameter platform and the first outer diameter platform such that at least a portion of the vane airfoil extends beyond a periphery of at least one of the first inner diameter platform and the first outer diameter platform, wherein a root of the vane airfoil extends into the recess, and wherein the root comprises an airfoil cross-sectional geometry.
4 Assignments
0 Petitions
Accused Products
Abstract
Gas turbine engines and related systems involving variable vanes are provided. In this regard, a representative vane assembly for a gas turbine engine includes: a first inner diameter platform; a first outer diameter platform spaced from the first inner diameter platform; and a variable vane airfoil rotatably attached to and extending between the first inner diameter platform and the first outer diameter platform such that at least a portion of the vane airfoil extends beyond a periphery of at least one of the first inner diameter platform and the first outer diameter platform.
95 Citations
17 Claims
-
1. A vane assembly for a gas turbine engine comprising:
-
a first inner diameter platform having an outer diameter surface and a recess located in the outer diameter surface; a first outer diameter platform spaced from the first inner diameter platform; and a variable vane airfoil rotatably attached to and extending between the first inner diameter platform and the first outer diameter platform such that at least a portion of the vane airfoil extends beyond a periphery of at least one of the first inner diameter platform and the first outer diameter platform, wherein a root of the vane airfoil extends into the recess, and wherein the root comprises an airfoil cross-sectional geometry. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A vane assembly for a gas turbine engine comprising:
-
a first inner diameter platform; a first outer diameter platform spaced from the first inner diameter platform; and a variable vane airfoil rotatably attached to and extending between the first inner diameter platform and the first outer diameter platform such that at least a portion of the vane airfoil extends beyond a periphery of at least one of the first inner diameter platform and the first outer diameter platform; wherein the vane airfoil is a portion of a variable vane assembly having a shaft, the vane airfoil being attached to the shaft such that the airfoil rotates with the shaft; wherein the variable vane assembly further comprises a pillow block attached to the shaft; and wherein the first outer diameter platform is operative to mount the pillow block.
-
-
13. A gas turbine engine comprising:
-
a compressor; a combustion section operative to receive compressed air from the compressor; and a turbine operative to drive the compressor, the turbine having a vane assembly; the vane assembly comprising; a first inner diameter platform; a first outer diameter platform spaced from the first inner diameter platform, which first outer diameter platform has an inner diameter surface and a recess located in the inner diameter surface; and a variable vane airfoil rotatably attached to and extending between the first inner diameter platform and the first outer diameter platform such that at least a portion of the vane airfoil extends beyond a periphery of at least one of the first inner diameter platform and the first outer diameter platform, wherein a tip of the vane airfoil extends into the recess, and wherein the tip comprises an airfoil cross-sectional geometry. - View Dependent Claims (14, 15)
-
-
16. A gas turbine engine comprising:
-
a compressor; a combustion section operative to receive compressed air from the compressor; a turbine operative to drive the compressor, the turbine having a vane assembly comprising; a first inner diameter platform; a first outer diameter platform spaced from the first inner diameter platform, which first outer diameter platform has an inner diameter surface and a recess located in the inner diameter surface; and a variable vane airfoil rotatably attached to and extending between the first inner diameter platform and the first outer diameter platform such that at least a portion of the vane airfoil extends beyond a periphery of at least one of the first inner diameter platform and the first outer diameter platform wherein a tip of the vane airfoil extends into the recess, and wherein the tip comprises an airfoil cross-sectional geometry; a second inner diameter platform; and a second outer diameter platform spaced from the second inner diameter platform; the second inner diameter platform being positioned adjacent to the first inner diameter platform such that an inner platform gap is formed therebetween; the second outer diameter platform being positioned adjacent to the first outer diameter platform such that an outer platform gap is formed therebetween; and the vane airfoil spanning across at least a portion of the inner platform gap and across at least a portion of the outer platform gap.
-
-
17. A variable vane for a gas turbine engine comprising:
-
a hollow shaft extending between a first end and a second end, and including a tapered spline; and a vane airfoil attached to the shaft between the first end and the second end; wherein the tapered spline is located between the airfoil and the second end, and is configured such that a narrow portion of the spline is located toward the second end.
-
Specification