APPARATUS AND SYSTEM FOR THIN RIM PLANET GEAR FOR AIRCRAFT ENGINE POWER GEARBOX
First Claim
Patent Images
1. A planet gear comprising:
- an annular planet gear ring comprising an annular planet gear rim, said annular planet gear rim having an inner radius and an outer radius, the inner radius and the outer radius defining a rim thickness therebetween, said annular planet gear rim further having a bending stress neutral axis, the bending stress neutral axis radius and the rim thickness define a ratio including values in a range from and including about 3 to and including about 10.
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Abstract
A planet gear includes an annular planet gear ring including an annular planet gear rim. The annular planet gear rim has an inner radius and an outer radius. The inner radius and the outer radius define a rim thickness therebetween. The annular planet gear rim further has a bending stress neutral axis. The bending stress neutral axis radius and the rim thickness define a ratio including values in a range from and including about 3 to and including about 10.
14 Citations
20 Claims
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1. A planet gear comprising:
an annular planet gear ring comprising an annular planet gear rim, said annular planet gear rim having an inner radius and an outer radius, the inner radius and the outer radius defining a rim thickness therebetween, said annular planet gear rim further having a bending stress neutral axis, the bending stress neutral axis radius and the rim thickness define a ratio including values in a range from and including about 3 to and including about 10. - View Dependent Claims (2, 3, 4)
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5. A gear assembly comprising:
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a sun gear; a ring gear; and a plurality of planet gears coupled to said ring gear and said sun gear, wherein each planet gear of said plurality of planet gears comprising an annular planet gear ring comprising an annular planet gear rim, said annular planet gear rim having an inner radius and an outer radius, the inner radius and the outer radius defining a rim thickness therebetween, said annular planet gear rim further having a bending stress neutral axis, the bending stress neutral axis radius and the rim thickness define a ratio including values in a range from and including about 3 to and including about 10. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13)
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14. A turbomachine comprising:
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a power shaft and a gear assembly, said power shaft rotationally coupled to said gear assembly; said gear assembly comprising; a sun gear; a ring gear; and a plurality of planet gears coupled to said ring gear and said sun gear, wherein each planet gear of said plurality of planet gears comprising an annular planet gear ring comprising an annular planet gear rim, said annular planet gear rim having an inner radius and an outer radius, the inner radius and the outer radius defining a rim thickness therebetween, said annular planet gear rim further having a bending stress neutral axis, wherein the bending stress neutral axis radius and the rim thickness define a ratio including values in a range from and including about 3 to and including about 10. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification