公开(公告)号：US20160363211A1

公开(公告)日：2016-12-15

申请号：US15155398

申请日：2016-05-16

Applicant: ROLLS-ROYCE PLC

Inventor： Jonathan P. BRADLEY

IPC: F16H57/04 ,  F02C3/04 ,  F16H57/08 ,  F02C7/36 ,  F16H1/28

Abstract: A gas turbine engine includes a gearbox including a sun gear, annulus gear, plurality of planet gears and a planet gear carrier. Each planet gear is rotatably mounted in the planet gear carrier by a planet gear bearing. A lubrication system is arranged to supply lubricant to the planet gear bearings and at least one of the sun gear, the planet gears and the annulus gears. The planet gear carrier includes an annular extension. The lubrication system includes an annular member arranged around annular extension to define an annular chamber which is sealed at its ends to the planet gear carrier and which contains a reserve of lubricant. The annular member has an inlet to supply lubricant into the annular chamber and the planet carrier has a first passage to supply lubricant to the sun, planet or annulus gear and a second passage to supply lubricant to planet gear bearings.

Abstract translation: 燃气涡轮发动机包括齿轮箱，其包括太阳齿轮，环形齿轮，多个行星齿轮和行星齿轮架。 每个行星齿轮通过行星齿轮轴承可旋转地安装在行星齿轮架上。 润滑系统被布置成向行星齿轮轴承和太阳齿轮，行星齿轮和环形齿轮中的至少一个提供润滑剂。 行星齿轮架包括环形延伸部。 润滑系统包括围绕环形延伸部布置的环形构件，以限定环形室，其在其端部处密封到行星齿轮架并且包含润滑剂储备。 环形构件具有用于将润滑剂供应到环形室中的入口，并且行星架具有用于向太阳，行星或环形齿轮供应润滑剂的第一通道和用于向行星齿轮轴承供应润滑剂的第二通道。

公开(公告)号：US20240011433A1

公开(公告)日：2024-01-11

申请号：US18215868

申请日：2023-06-29

Applicant: ROLLS-ROYCE plc

Inventor： Stephen J. BRADBROOK ,  William J. SMITH ,  Jonathan P. BRADLEY

IPC: F02C3/06

CPC classification number: F02C3/06 ,  F05D2220/36

Abstract: A novel configuration for axial flow gas turbine engine for aircraft has an engine core having a core length and including first turbine, axial compressor, and drive connecting the first turbine to the axial compressor, the engine core further including a second turbine, and a fan shaft connecting the second turbine to a fan located upstream of the engine core, the fan including a plurality of fan blades extending from a fan hub, the fan having a tip radius from 90 mm to 225 mm and wherein the ratio of fan tip radius to an engine length is 0.15 to 0.25. The engine may have 3, 4 or 5 compressor stages and a combustor volume (in litres) which when divided by the fan tip radius (in mm) is 0.015 to 0.083. The fan may be a multistage fan configured to permit an electric motor to be located within the fan hub diameter.

公开(公告)号：US20180100573A1

公开(公告)日：2018-04-12

申请号：US15703535

申请日：2017-09-13

Applicant: ROLLS-ROYCE plc

Inventor： Jason J. MADGE ,  Jonathan P. BRADLEY

IPC: F16H57/023 ,  F16H1/28 ,  F16H57/08 ,  F02C7/36

CPC classification number: F16H57/023 ,  F02C7/36 ,  F02K3/06 ,  F05D2260/40311 ,  F16H1/2836 ,  F16H57/0031 ,  F16H57/0479 ,  F16H57/082

Abstract: A planetary gear box assembly, comprises a sun gear and a plurality of planet gears in meshing engagement with the sun gear; the planet gears in meshing engagement with a ring gear which encircles the plurality of planet gears, each planet gear mounted for rotation in a planet carrier by means of a bearing pin wherein a bore in the planet carrier for receiving the bearing pin is parallel. The bearing pin includes a small axially tapered section adjacent one or both ends and the assembly further comprises a tapered sleeve configured to interference fit between a radially inner wall surface of the parallel bore and a radially outer surface of the or each axially tapered section.

公开(公告)号：US20180058571A1

公开(公告)日：2018-03-01

申请号：US15680613

申请日：2017-08-18

Applicant: ROLLS-ROYCE plc

Inventor： Jason J. MADGE ,  Jonathan P. BRADLEY

IPC: F16H57/08

Abstract: Described is a planet carrier rotatable about a carrier axis, comprising: a planet pin for receiving a planet gear, the planet pin having a body with an external surface for receiving a planet gear bearing or planet gear; a carrier having a first axial wall and a second axial wall with the planet pin extending there between along a planet pin axis, wherein each carrier wall includes a planet pin retention feature located on radially inwards of the planet pin axis and engaged with a portion of the planet pin.

公开(公告)号：US20170261096A1

公开(公告)日：2017-09-14

申请号：US15438314

申请日：2017-02-21

Applicant: ROLLS-ROYCE PLC

Inventor： Jonathan P. BRADLEY ,  Jason J. MADGE

IPC: F16H57/08 ,  F02C7/36 ,  F16H1/28

CPC classification number: F16H57/082 ,  F02C7/36 ,  F05D2260/40311 ,  F16H1/28

Abstract: A transmission system for transmitting a change of speed between two rotating shafts, includes a planetary gear box having a sun gear arranged for rotation with a first shaft travelling at a first speed. Planet gears contained within a ring gear are arranged to orbit the sun gear when the sun gear rotates and the ring gear is in a fixed position. Each planet gear is mounted for rotation on a centrifugal carrier. An output carrier includes a body having arms and the arms are each aligned with an axis of rotation of a planet gear and held to the centrifugal carrier by one or more supports extending in a radial plane. An output shaft extends from the body in coaxial alignment with the input shaft. A connector which is stiff in a radial dimension but flexible under torsional load is arranged between the output carrier and the centrifugal carrier.