公开(公告)号：US12018840B2

公开(公告)日：2024-06-25

申请号：US18050825

申请日：2022-10-28

Applicant: ROLLS-ROYCE plc

Inventor： Damian Martin ,  James E Clissold

IPC: F02C7/28 ,  F23R3/28

CPC classification number: F23R3/283 ,  F02C7/28 ,  F23R2900/03044

Abstract: A combustor arrangement includes a fuel injector, and a seal arranged around the fuel injector and having an upstream end and a downstream end. The seal includes an annular body at least partially abutting the fuel injector. The annular body includes an inner surface facing the fuel injector and an outer surface radially spaced apart from the inner surface relative to the central axis. The annular body further includes a plurality of slots disposed on the inner surface and circumferentially spaced apart from each other relative to the central axis. Each slot axially extends at least partially from the downstream end to the upstream end. Each slot is disposed in fluid contact with the fuel injector. The seal also includes a flange radially extending from the outer surface of the annular body at the upstream end.

公开(公告)号：US20240200467A1

公开(公告)日：2024-06-20

申请号：US18588409

申请日：2024-02-27

Applicant: ROLLS-ROYCE plc

Inventor： Mark SPRUCE

IPC: F01D25/18 ,  F01D25/16 ,  F02C3/113 ,  F02C7/06 ,  F02C7/36 ,  F02K3/06 ,  F16H57/04 ,  F16H57/08

CPC classification number: F01D25/18 ,  F01D25/166 ,  F02C3/113 ,  F02C7/06 ,  F02C7/36 ,  F02K3/06 ,  F16H57/0469 ,  F16H57/0479 ,  F05D2220/323 ,  F05D2220/36 ,  F05D2260/40311 ,  F16H2057/085

Abstract: Gearboxes for aircraft gas turbine engines, in particular to arrangements for journal bearings such gearboxes, and to related methods of operating such gearboxes and gas turbine engines. Example embodiments include a gearbox for an aircraft gas turbine engine, the gearbox including: a sun gear; a plurality of planet gears surrounding and engaged with the sun gear; and a ring gear surrounding and engaged with the plurality of planet gears, each of the plurality of planet gears being rotatably mounted around a pin of a planet gear carrier with a journal bearing having an internal sliding surface on the planet gear and an external sliding surface on the pin.

公开(公告)号：US20240191658A1

公开(公告)日：2024-06-13

申请号：US18512999

申请日：2023-11-17

Applicant: Rolls-Royce plc

Inventor： David M. Donnelly ,  Derek S. Wall ,  Jonathan Wieland

IPC: F02C7/12 ,  F01D21/00 ,  F01D21/12

CPC classification number: F02C7/12 ,  F01D21/003 ,  F01D21/12 ,  F05D2260/20

Abstract: A method of operating a gas turbine engine having a spool includes executing, by a controller, a pre-shutdown procedure. The pre-shutdown procedure includes: determining a parameter associated with a thermal condition of the gas turbine engine; and calculating an idle period for an idle rotation operation to be performed in a shutdown procedure. Calculation of the idle period is based on the determined parameter.

公开(公告)号：US20240191657A1

公开(公告)日：2024-06-13

申请号：US18583395

申请日：2024-02-21

Applicant: ROLLS-ROYCE PLC

Inventor： Roderick M. TOWNES ,  Michael J WHITTLE ,  Pascal DUNNING

IPC: F02C7/08 ,  F01D5/28 ,  F02C7/36 ,  F02C9/16 ,  F02K3/06

CPC classification number: F02C7/08 ,  F01D5/282 ,  F01D5/284 ,  F02C7/36 ,  F02C9/16 ,  F02K3/06 ,  F05D2220/32 ,  F05D2220/323 ,  F05D2220/36 ,  F05D2260/40311 ,  F05D2300/6033

Abstract: A highly efficient gas turbine engine is a system wherein the fan of the gas turbine engine is driven from a turbine via a gearbox, such that the fan has a lower rotational speed than the driving turbine, thereby providing efficiency gains. The efficient fan system is mated to a core that has low cooling flow requirements and/or high temperature capability, and which may have particularly low mass for a given power.

公开(公告)号：US20240189952A1

公开(公告)日：2024-06-13

申请号：US18525032

申请日：2023-11-30

Applicant: Rolls-Royce plc

Inventor： Adam Thomas CLARE

IPC: B23P6/00 ,  B24B19/14

CPC classification number: B23P6/002 ,  B24B19/14

Abstract: A repair system for repairing a surface of a workpiece includes a first tool configured to rotate in a first direction. The first tool contacts the surface of the workpiece during the rotation of the first tool in order to repair the surface of the workpiece. The repair system further includes a second tool configured to rotate in a second direction opposite to the first direction. The second tool contacts the surface of the workpiece during the rotation of the second tool in order to repair the surface of the workpiece. The repair system further includes a drive mechanism coupled to each of the first tool and the second tool.

公开(公告)号：US20240186889A1

公开(公告)日：2024-06-06

申请号：US18512170

申请日：2023-11-17

Applicant: ROLLS-ROYCE plc

Inventor： Sivakumar NADARAJAN ,  Mohamed Sathik MOHAMED HALICK ,  Viswanathan VAIYAPURI ,  Sundararajan PRASANTH ,  Amit K. GUPTA

IPC: H02M1/32 ,  H02M1/00 ,  H02M7/5387

CPC classification number: H02M1/327 ,  H02M1/0009 ,  H02M7/53871

Abstract: The disclosure relates to thermal management of a power electronics converter. An example embodiment includes a power electronics converter comprising: a first set of terminals connectable to a first voltage supply; a second set of terminals connectable to a second voltage supply; a plurality of semiconductor switches connected between the first and second sets of terminals; a voltage sensor connected to measure a voltage across the second supply; a current sensor connected to measure a current through the second supply; and a controller connected to provide switching signals to the semiconductor switches and to receive voltage and current signals from the voltage and current sensors, the controller configured, for each of the semiconductor switches, to: determine a junction temperature of the semiconductor switch; compare the determined junction temperature to a reference temperature; and adjust a switching gate voltage applied to the semiconductor switch.

公开(公告)号：US20240183273A1

公开(公告)日：2024-06-06

申请号：US18508497

申请日：2023-11-14

Applicant: ROLLS-ROYCE plc

Inventor： John M. HARRISON

IPC: F01D5/02

CPC classification number: F01D5/027 ,  F05D2220/323 ,  F05D2260/96

Abstract: Disclosed is a gas turbine engine rotor balancing apparatus comprising: a rotor configured to rotate about a rotor axis; a substantially annular balancing mass configured to encircle the rotor; and a mass adjustment apparatus for adjusting the position of the balancing mass relative to the rotor.

公开(公告)号：US20240167393A1

公开(公告)日：2024-05-23

申请号：US18386049

申请日：2023-11-01

Applicant: ROLLS-ROYCE plc

Inventor： Simon PITT

IPC: F01D21/00 ,  G01B13/18

CPC classification number: F01D21/003 ,  G01B13/18 ,  F05D2270/80

Abstract: A probe for determining the swirl angle of the exhaust gasses of a turbine engine, has an elongate body with a fastener, the elongate body having a tip at its proximal end and a head at its distal end, the elongate body having at least two passageways extending from the tip to the head, each passageway having an aperture at the tip and a port at the head which is connectable to a pressure sensor.

公开(公告)号：US20240165795A1

公开(公告)日：2024-05-23

申请号：US18384099

申请日：2023-10-26

Applicant: ROLLS-ROYCE PLC

Inventor： Liam D. HARRISON ,  Ian KENNEDY ,  Thomas HOPPER ,  Andrew D. NORTON

IPC: B25J9/06 ,  B25J9/12

CPC classification number: B25J9/065 ,  B25J9/12

Abstract: An actuator pack for a continuum arm robot, the actuator pack including a plurality of actuator pack sections, with each section having a housing and an interface plate, each section further containing a bank consisting of a plurality actuators that are connected to their own respective drive electronics and the actuators being mounted to the housing or the interface plate and having their drive heads exposed through a hole in the interface plate, and wherein the sections of the actuator pack are configured to coupled together in one state.

公开(公告)号：US20240165679A1

公开(公告)日：2024-05-23

申请号：US18386104

申请日：2023-11-01

Applicant: ROLLS-ROYCE plc

Inventor： Najib Bin MOHAMED SALLEH ,  Sherilyn LIM

IPC: B08B7/00 ,  B08B1/00 ,  B08B3/04 ,  B08B7/04 ,  C11D3/04 ,  C11D3/37 ,  C11D11/00

CPC classification number: B08B7/0014 ,  B08B1/005 ,  B08B3/04 ,  B08B7/04 ,  C11D3/04 ,  C11D3/3703 ,  C11D11/0041

Abstract: A method for cleaning a surface of a component includes placing a volume of a cleaning agent onto the surface of the component. The method further includes performing a repair operation of the component either before or after placing the volume of the cleaning agent. The repair operation results in a generation of contaminant particles. Upon contact of the cleaning agent with the contaminant particles, the cleaning agent absorbs the contaminant particles by adhesion. The method further includes removing the cleaning agent from the surface of the component after the contaminant particles are absorbed by the cleaning agent.