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US 11,401,985 B2Granted
Epicyclic gear system and gas turbine engine
AssigneeRolls-Royce Deutschland Ltd & Co KG
InventorLuca Mantovan
Life of this patent
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Abstract
An epicyclic gear system for a gas turbine engine includes a planet carrier with at least one structural member, on which a planet gear is pivot-mounted by a bearing that is radially arranged between the planet gear and the structural member. Furthermore, a roller bearing device is arranged radially between the planet gear and the bearing. A relative movement between the planet gear and the bearing is prevented by the roller bearing device, if a friction torque in the region of the bearing is less than or equal to a threshold value.
Claims15
An epicyclic gear system comprising:
- a planet carrier including a structural member;
- a planet gear;
- a bearing arranged radially between the planet gear and the structural member to pivotally mount the planet gear on the structural member;
- and
- a roller bearing device arranged radially between the planet gear and the bearing, the roller bearing device configured to prevent a relative movement between the planet gear and the bearing if a friction torque in a region of the bearing is less than or equal to a threshold value.
2 more elements
Dependencies are inferred from the claim text.