Non uniform vane spacing
First Claim
1. A gas turbine engine ring or circular row of non-uniformally spaced vanes comprising:
- a plurality of non-uniformly circumferentially spaced vanes, all the vanes in the ring or circular row forming a first group of adjacent vanes having a first spacing between adjacent vanes of the first group and a second group of adjacent vanes having a second spacing between adjacent vanes of the second group,the plurality of vanes forming only one first group of adjacent vanes and only one second group of adjacent vanes with only two defined first and second spacings between adjacent vanes in the ring or circular row,the first spacing and the second spacing being unequal, andthe first spacing being greater than the second spacing.
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Accused Products
Abstract
A circular row of non-uniformally spaced vanes includes only one first group and only one second group of adjacent vanes, unequal first and second spacing between adjacent vanes in the first and second groups, and first spacing greater than second spacing. An embodiment with second group including only three adjacent vanes. Second spacing may be about 25%-35% smaller than a nominal uniform spacing used as a design parameter for designing spacing of the non-uniformly spaced stator vanes. Circular row may be sectored. A gas turbine engine section may include one or more rings or circular rows of fixed and/or variable non-uniformally spaced vanes. Method for designing non-uniform vane spacing for circular row includes determining nominal uniform spacing and forming first spacing and second spacing from nominal uniform spacing of vanes.
21 Citations
17 Claims
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1. A gas turbine engine ring or circular row of non-uniformally spaced vanes comprising:
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a plurality of non-uniformly circumferentially spaced vanes, all the vanes in the ring or circular row forming a first group of adjacent vanes having a first spacing between adjacent vanes of the first group and a second group of adjacent vanes having a second spacing between adjacent vanes of the second group, the plurality of vanes forming only one first group of adjacent vanes and only one second group of adjacent vanes with only two defined first and second spacings between adjacent vanes in the ring or circular row, the first spacing and the second spacing being unequal, and the first spacing being greater than the second spacing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A gas turbine engine assembly comprising:
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a gas turbine engine section including one or more rings or circular rows of fixed and/or variable non-uniformally spaced vanes, each of the one or more rings or circular rows comprising; a plurality of non-uniformly circumferentially spaced vanes, all the vanes in each of the one or more rings or circular rows forming a first group of adjacent vanes having a first spacing between adjacent vanes of the first group and a second group of adjacent vanes having a second spacing between adjacent vanes of the second group, the plurality of vanes forming only one first group of adjacent vanes and only one second group of adjacent vanes with only two defined first and second spacings between adjacent vanes in each of the one or more rings or circular rows, the first spacing and the second spacing being unequal, and the first spacing being greater than the second spacing. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification