Invention Grant
- Patent Title: Reliable gearbox for gas turbine engine
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Application No.: US16820963Application Date: 2020-03-17
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Publication No.: US11359548B2Publication Date: 2022-06-14
- Inventor: Mark Spruce
- Applicant: ROLLS-ROYCE plc
- Applicant Address: GB London
- Assignee: ROLLS-ROYCE plc
- Current Assignee: ROLLS-ROYCE plc
- Current Assignee Address: GB London
- Agency: Oliff PLC
- Priority: GB1917762 20191205
- Main IPC: F02C7/36
- IPC: F02C7/36 ; F16H1/28 ; F16H57/08

Abstract:
An engine core including a turbine, compressor, and a core shaft connecting the turbine and compressor; a fan located upstream of the engine core including a plurality of fan blades; and a gearbox. The gearbox is arranged to receive an input from the core shaft and to output drive to the fan to drive the fan at a lower rotational speed than the core shaft. The gearbox is an epicyclic gearbox and includes a sun gear, a plurality of planet gears, ring gear, and planet carrier to the mounted planet gears. The planet carrier has an effective linear torsional stiffness and the gearbox has a gear mesh stiffness between the planet gears and the ring gear. A carrier to ring mesh ratio of: the effective linear torsional stiffness of the planet carrier gear mesh stiffness between the planet gears and the ring gear is greater than or equal to 0.2.
Public/Granted literature
- US20210172379A1 RELIABLE GEARBOX FOR GAS TURBINE ENGINE Public/Granted day:2021-06-10
Information query
IPC分类: