公开(公告)号：EP4332245A1

公开(公告)日：2024-03-06

申请号：EP23190523.3

申请日：2023-08-09

申请人： Rolls-Royce plc

发明人： Rawson, Martin ,  Molokanov, Aleksej ,  Hetherington, John

IPC分类号： C21D7/06 ,  C21D9/28 ,  C21D9/32 ,  C21D9/40 ,  C21D11/00 ,  B24C1/10 ,  F01D1/00 ,  F02C1/00

摘要： A method (500) of manufacturing a component (102) includes supporting the component (102) on a mounting structure (104). The method (500) further includes impacting first peening bodies (110) on the component (102) to increase sub-surface compressive residual stresses of the component (102). The first peening bodies (110) impact the component (102) at a first intensity of from about 0.45 mmA to about 0.61 mmA. A first coverage of the component (102) by the first peening bodies (110) is from about 120% to about 205%. The method (500) further includes impacting second peening bodies (112) on the component (102) to increase surface compressive residual stresses of the component (102). The second peening bodies (112) impact the component (102) at a second intensity of from about 0.20 mmA to about 0.30 mmA. A second coverage of the component (102) by the second peening bodies (112) is from about 120% to about 205%. Each of the first peening bodies (110) and the second peening bodies (112) includes a ceramic material.

公开(公告)号：EP4328604A1

公开(公告)日：2024-02-28

申请号：EP23187185.6

申请日：2023-07-24

申请人： Rolls-Royce plc

发明人： Sundararajan, Prasanth ,  Mohamed Halick, Mohamed Sathik ,  Gajanayake, Chandana J ,  Gupta, Amit K

IPC分类号： G01R31/42 ,  H02M1/00

摘要： Disclosed is monitoring circuitry (100) connectable to power conversion circuitry (150) enclosed within packaging (152), the power conversion circuitry (150) comprising terminals providing external connections to nodes of the power conversion circuitry (150) enclosed within the packaging (152), the monitoring circuitry (100) comprising: a comparator (102) comprising a first input terminals (104) connectable to first and second terminals of the power conversion circuitry (150, 158, 450) and a second input terminal (106) connected to a reference voltage, wherein the first and second terminals provide external connections to first and second nodes connected along respective current paths each connected to switching circuitry (156) of the power conversion circuitry (150) enclosed within the packaging (152), wherein the comparator (102) detects a switch state of the switching circuitry (156) based on a voltage generated at the first input terminal (104) and the reference voltage; processing circuitry (108) connected to the comparator (102) and configured to monitor the power conversion circuitry (150) based on the detected switch state and a signal of the power conversion circuitry (150). Also disclosed are methods (300) of monitoring power conversion circuitry (150).

公开(公告)号：EP4327964A1

公开(公告)日：2024-02-28

申请号：EP23187455.3

申请日：2023-07-25

申请人： Rolls-Royce plc

发明人： Lister, Samuel T. ,  Baxter, Gavin J. ,  Jackson, Martin

IPC分类号： B22F3/15 ,  B22F5/00 ,  B22F5/04 ,  B33Y70/00 ,  C22C1/02 ,  C22C1/04 ,  C22C14/00 ,  B22F3/105

摘要： A titanium alloy comprising Al 4.78 to 6.44 wt.%; V 3.65 to 5.15 wt.%; Mo 1.32 to 3.58 wt.%; Cr 0.75 to 2.28 wt.%; Fe 0.00 to 0.42 wt.%; C 0.00 wt.% to 0.10 wt.%; S 0.00 wt.% to 0.10 wt.%; N up to 500 ppm; O up to 2000 ppm and H up to 150 ppm; the balance being Ti and incidental elements and unavoidable impurities. Such a titanium alloy is useful for manufacturing gas turbine engine components including turbine blades and stators.

公开(公告)号：EP4324967A1

公开(公告)日：2024-02-21

申请号：EP23183216.3

申请日：2023-07-04

申请人： Rolls-Royce plc

发明人： Jones, Christopher D ,  Backhouse, Robert C ,  Bishop, Adam J ,  Buck, Ian ,  Dhiman, Sarvesh

IPC分类号： D03D25/00 ,  B29C70/24 ,  D03D41/00

摘要： A woven composite component 100 for an aerospace structure or machine, comprising: a compound member 102 extending from a junction 104 with a feeder member 106, a noodle element 114 extending in a weft direction through the junction. The feeder member comprises first and second feeder portions 108, 110 either side of the junction, each feeder portion comprising warp tows extending towards the junction. There is a compound set of warp tows 112 extending from the first and second feeder portions, each turning at the junction to define warp tows for the compound member. There is a crossing set of warp tows belonging to the compound set, the crossing set comprising warp tows from the first feeder portion and warp tows from the second portion which cross each other at the junction to pass around the noodle element. There is also disclosed a method of manufacturing a preform for a woven composite component.

公开(公告)号：EP4321477A1

公开(公告)日：2024-02-14

申请号：EP23184588.4

申请日：2023-07-11

申请人： Rolls-Royce plc

发明人： Wild, Sarah

IPC分类号： C01B3/08

摘要： A fuel precursor is provided for producing hydrogen fuel by reacting aluminium and water. The fuel precursor has aluminium particles suspended in a hydrophobic liquid such that when the fuel precursor is introduced to water, the suspended aluminium particles migrate to the water and react therewith to produce hydrogen. The suspended aluminium particles are non-spherical, angular particles. The surfaces of the suspended aluminium particles have substantially no oxide layer thereon

公开(公告)号：EP4321305A1

公开(公告)日：2024-02-14

申请号：EP23187312.6

申请日：2023-07-24

申请人： Rolls-Royce plc

发明人： Dong, Xin ,  Mohammad, Abdelkhalick ,  Kell, James ,  Axinte, Dragos ,  Fang, Yihua

IPC分类号： B25J9/06 ,  B25J13/08 ,  B25J19/02

摘要： A sensing system for a continuum arm robot, the sensing system comprising at least one camera ring system mounted to the continuum robot, the camera ring system having at least two forward-facing cameras that face along the axis of the robot towards the tip.

公开(公告)号：EP4311918A2

公开(公告)日：2024-01-31

申请号：EP23183207.2

申请日：2023-07-04

申请人： Rolls-Royce plc

发明人： Donnelly, David ,  Wall, Derek

IPC分类号： F01D25/36 ,  F01D19/02

摘要： There is disclosed a gas turbine engine 10 comprising: an electrically-powered motor 402 configured to rotate a driven spool 426 of the gas turbine engine; a primary controller configured to conduct a primary function using the motor; and a bow controller 410 configured to selectively control the motor to perform a rotor bow mitigation operation in which the motor drives the driven spool to rotate to mitigate a non-uniform thermal distribution in a rotor of a spool of the gas turbine engine.

公开(公告)号：EP4300808A1

公开(公告)日：2024-01-03

申请号：EP23175009.2

申请日：2023-05-24

申请人： Rolls-Royce plc

发明人： Trainer, David R ,  Chong, Ellis F H ,  Sweet, Mark ,  Incerpi, Gian

IPC分类号： H02P9/00

摘要： Reconfigurable permanent magnet electrical machines and aircraft power and propulsion systems comprising such electrical machines are described. In one aspect, an aircraft power and propulsion system comprises: a gas turbine engine; a DC electrical network; a permanent magnet electrical machine comprising a rotor drivingly coupled to a spool of the gas turbine engine, and a stator comprising windings controllably switchable between a star configuration and a delta configuration; an AC-DC power electronics converter, an AC side of which is connected to terminals of the stator windings of the electrical machine and a DC side of which is connected to the DC electrical network; an additional electrical power source connected to and controllable to supply electrical power to the DC electrical network; and a control system configured to control the switching of the stator windings between the star configuration and the delta configuration and to control the additional electrical power source to supply electrical power to the DC electrical network during a time interval when the stator is being switched between the star configuration and the delta configuration.

公开(公告)号：EP4300806A1

公开(公告)日：2024-01-03

申请号：EP23175008.4

申请日：2023-05-24

申请人： Rolls-Royce plc

发明人： Trainer, David R ,  Chong, Ellis F H ,  Sweet, Mark ,  Incerpi, Gian

IPC分类号： H02P6/00

摘要： Reconfigurable permanent magnet electrical machines and aircraft power and propulsion systems comprising such electrical machines are described. In one aspect, an aircraft power and propulsion system comprises: a gas turbine engine; a permanent magnet electrical machine comprising a rotor drivingly coupled to a spool of the gas turbine engine, and a stator comprising windings controllably switchable between a star configuration and a delta configuration; a DC electrical network; an AC:DC power electronics converter, an AC side of which is connected to terminals of the stator windings of the electrical machine and a DC side of which is connected to the DC electrical network; and a control system. The control system is configured to monitor at least one operating condition of the power and propulsion system and to control the switching of the stator windings between the star configuration and the delta configuration based on the at least one operating condition.

公开(公告)号：EP4299882A1

公开(公告)日：2024-01-03

申请号：EP23173834.5

申请日：2023-05-17

申请人： Rolls-Royce plc

发明人： Town, Craig ,  Madge, Jason

IPC分类号： F01D25/16 ,  F16C27/04

摘要： A bearing carrier support (50) for connecting a rotary shaft of a gas turbine engine (10) to a static portion of the gas turbine engine. The bearing carrier support has: a bearing portion (60) for supporting the rotary shaft; a flange portion (70) for attaching the bearing carrier support to the static portion of the gas turbine engine; and a support portion (80) that connects the flange portion and the bearing portion. The support portion (80) has a plurality of circumferentially distributed struts (110) that are axially aligned with respect to the rotary shaft. The number of struts (110) is at least 500 and the diameter of each strut is no more than 3 mm.