公开(公告)号：US10935125B2

公开(公告)日：2021-03-02

申请号：US15897499

申请日：2018-02-15

Applicant: ROLLS-ROYCE plc ,  Rolls-Royce Deutschland Ltd & Co KG

Inventor： David P. Scothern ,  Stephan Uhkötter

IPC: F16H57/04 ,  F04D1/00 ,  F16J15/00 ,  F16J15/3204 ,  F16D33/02

Abstract: A fluid transfer coupling comprises a first shaft assembly a second shaft assembly, and a seal assembly. The first shaft assembly comprises a first shaft and an annular fin attached to the first shaft, the annular fin having one or more internal passages extending therethrough. Each internal passage connects a centre portion of the first shaft to a radially outwardly facing side of the annular fin. The second shaft assembly comprises a second shaft and an annular trough extending radially outwardly of the second shaft.

公开(公告)号：US11293345B2

公开(公告)日：2022-04-05

申请号：US16391592

申请日：2019-04-23

Applicant: ROLLS-ROYCE plc

Inventor： David P. Scothern ,  Steven P. Culwick ,  Shane Perera ,  Edward J. Spalton

IPC: F02C7/00 ,  F02C7/047 ,  F02C9/18 ,  B64D33/02 ,  F01D25/02

Abstract: A gas turbine engine comprising: an engine core comprising a compressor; a compressor bleed valve in communication with the compressor and configured to release bleed air from the compressor; at least one component provided at the inlet of the engine core having a de-icing conduit, configured to receive the bleed air; and a flow controller, configured to provide bleed air to the de-icing conduit of the at least one component in response to either or both of a requirement to de-ice the component and a requirement to release bleed air from the compressor to optimise operation of the core.

公开(公告)号：US10753393B2

公开(公告)日：2020-08-25

申请号：US16106950

申请日：2018-08-21

Applicant: ROLLS-ROYCE plc

Inventor： David P. Scothern

IPC: F16C33/08 ,  F01D17/16 ,  F16C17/02 ,  F16C35/02 ,  F04D29/56 ,  F16C43/02

Abstract: A bearing arrangement comprising a shaft with a recess in its end, a bearing housing, an annular first bush comprising an inner first portion and an inner second portion and a second bush that engages the recess of the shaft. The first bush bears against the bearing housing. The shaft engages the inner first portion of the first bush. The second bush engages the inner second portion of the first bush.

公开(公告)号：US10850857B2

公开(公告)日：2020-12-01

申请号：US16038263

申请日：2018-07-18

Applicant: ROLLS-ROYCE plc

Inventor： David P. Scothern

IPC: B64D15/20 ,  F01D25/02 ,  F02C7/047 ,  F01D21/00

Abstract: The present disclosure concerns the detection of ice within a system. More specifically, but not exclusively, the disclosure concerns the detection of ice accretion within a gas turbine engine. The apparatus and method relies on heating a first region (38) of a component (44) and comparing the measured temperature of the first region (38) with a second temperature value, possibly measured at a distinct second region (40) of the component (44).

公开(公告)号：US11085521B2

公开(公告)日：2021-08-10

申请号：US16059370

申请日：2018-08-09

Applicant: ROLLS-ROYCE plc

Inventor： David A. Edwards ,  David P. Scothern

IPC: F16N7/16 ,  F16N7/36 ,  F16H57/04 ,  F16N25/04 ,  F02C7/36 ,  F01D25/18

Abstract: An auxiliary oil supply apparatus for a rotating device (50, 51), the rotating device comprising a primary oil supply (52), a rotating component (50) and a static component (51) situated radially outwardly of a centre of rotation of the rotating component (50) and arranged to collect oil (58) held radially outwardly from the rotating component (50) as the rotating component rotates. The auxiliary oil apparatus comprises a scoop (56) associated with the rotating component (50) and is responsive to a change in a known parameter to move between a first position in the static component (51) to a second position between the static component (51) and the centre of rotation.

公开(公告)号：US11078838B2

公开(公告)日：2021-08-03

申请号：US16396918

申请日：2019-04-29

Applicant: ROLLS-ROYCE plc

Inventor： Craig W. Bemment ,  David P. Scothern

IPC: F02C6/08 ,  B64D13/06 ,  F02C9/18 ,  F02C7/277 ,  F02C7/32 ,  F02C7/36

Abstract: A method of operating a gas turbine engine compressor. The engine comprises a compressor having an environmental control system bleed port having an outlet in fluid communication with an aircraft environmental control system air duct, and an air turbine starter configured to rotate a compressor shaft of the gas turbine engine. The air turbine starter has an inlet in fluid communication with the environmental control system air duct via an air turbine valve. The method comprises determining a surge margin of the compressor, and where the surge margin of the compressor is determined to be below a predetermined minimum surge margin, opening the air turbine valve to supply air to the air turbine.

公开(公告)号：US10961863B2

公开(公告)日：2021-03-30

申请号：US16286714

申请日：2019-02-27

Applicant: ROLLS-ROYCE plc

Inventor： David P. Scothern

IPC: F01D15/10 ,  F02C3/10 ,  F02C3/113 ,  F02C7/36 ,  F03D9/25 ,  F02C7/32 ,  H02K7/116 ,  H02K7/18 ,  F03D15/00 ,  H02K16/00

Abstract: An electrical power generator system has: an input shaft for receiving a rotary input drive; plural output shafts connected by respective gear shifting arrangements to the input shaft thereby providing different gear ratios between the input shaft and each output shaft; and plural electrical generators powered by rotation of the respective output shafts, electrical power outputs of the generators being combined to supply a total power to a load. The input shaft operates over a range of rotation frequencies, and the gear shifting arrangements are configured to shift the gear ratios between the input shaft and the output shafts such that the output shafts operate over a narrower range of rotation frequencies.