GEARED GAS TURBINE ENGINE AND A GEARBOX
First Claim
1. A gas turbine engine comprising a gearbox, the gearbox comprising a sun gear, an annulus gear, a plurality of planet gears and a carrier, the sun gear meshing with the planet gears and the planet gears meshing with the annulus gear, the carrier comprising a first ring, a second ring spaced axially from the first ring and a plurality of circumferentially spaced axles extending axially between the first ring and the second ring, each planet gear being rotatably mounted on a respective one of the axles, the axles being arranged at a first radius, at least one of the first ring and the second ring comprising a metal matrix composite material, the metal matrix composite material comprising a ring of reinforcing fibres and the ring of reinforcing fibres having a second radius greater than the first radius.
1 Assignment
0 Petitions
Accused Products
Abstract
A gas turbine engine comprises a gearbox comprises a sun gear, an annulus gear, a plurality of planet gears and a carrier. The sun gear meshes with the planet gears and the planet gears mesh with the annulus gear. The planet gear carrier comprising a first ring, a second ring spaced axially from the first ring and a plurality of circumferentially spaced axles extending axially between the first ring and the second ring. Each planet gear is rotatably mounted on a respective one of the axles and the axles are arranged at a first radius. At least one of the first ring and the second ring comprises a metal matrix composite material ring and the metal matrix composite ring comprises a ring of reinforcing fibres and the ring of reinforcing fibres having a second radius greater than the first radius.
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Citations
20 Claims
- 1. A gas turbine engine comprising a gearbox, the gearbox comprising a sun gear, an annulus gear, a plurality of planet gears and a carrier, the sun gear meshing with the planet gears and the planet gears meshing with the annulus gear, the carrier comprising a first ring, a second ring spaced axially from the first ring and a plurality of circumferentially spaced axles extending axially between the first ring and the second ring, each planet gear being rotatably mounted on a respective one of the axles, the axles being arranged at a first radius, at least one of the first ring and the second ring comprising a metal matrix composite material, the metal matrix composite material comprising a ring of reinforcing fibres and the ring of reinforcing fibres having a second radius greater than the first radius.
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19. A gearbox comprising a sun gear, an annulus gear, a plurality of planet gears and a carrier, the sun gear meshing with the planet gears and the planet gears meshing with the annulus gear, the carrier comprising a first ring, a second ring spaced axially from the first ring and a plurality of circumferentially spaced axles extending axially between the first ring and the second ring, each planet gear being rotatably mounted on a respective one of the axles, the axles being arranged at a first radius, at least one of the first ring and the second ring comprising a metal matrix composite material, the metal matrix composite material comprising a ring of reinforcing fibres and the ring of reinforcing fibres having a second radius greater than the first radius.
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20. A planet gear carrier comprising a first ring, a second ring spaced axially from the first ring, a plurality of circumferentially spaced axles extending axially between the first ring and the second ring and a plurality of planet gears, each planet gear being rotatably mounted on a respective one of the axles, the axles being arranged at a first radius, at least one of the first ring and the second ring comprising a metal matrix composite material, the metal matrix composite material comprising a ring of reinforcing fibres and the ring of reinforcing fibres having a second radius greater than the first radius.
Specification