公开(公告)号：US20250020546A1

公开(公告)日：2025-01-16

申请号：US18752004

申请日：2024-06-24

Applicant: ROLLS-ROYCE plc

Inventor： Andrew D. NORTON ,  Alexander R. WALLACE ,  Liam D. HARRISON

IPC: G01M15/14 ,  F01D21/00 ,  G01M15/02

Abstract: A system for inspecting a complex component, the system comprising: a flexible inspection device having a driver for controlling the motion of the flexible inspection device by manipulating the relative positions of a plurality of joints within the device, the flexible device having a sensor on its distal end; a feed mechanism for controlling the insertion or retraction of the flexible device into or from the complex component; a component driver for driving the movement of an aspect of the complex component from at least a first position to a second position; and a computer running a computer program, the computer interfacing with the flexible inspection device, the feed mechanism, and the component driver, so as to link the operation of the flexible inspection device, the feed mechanism and the component driver through a single program.

公开(公告)号：US20250018557A1

公开(公告)日：2025-01-16

申请号：US18752042

申请日：2024-06-24

Applicant: Rolls-Royce plc

Inventor： Liam D. HARRISON ,  Ian Kennedy

IPC: B25J9/10 ,  B25J9/00

Abstract: A feed mechanism for inserting and/or retracting a flexible robotic arm from an area, the feed mechanism including a housing, a passageway extending about a central longitudinal axis through the length thereof, a drive portion and rotational portion, the drive portion not being fixedly connected within the housing and having at least a pair of drive wheels coupled to a drive motor, the drive wheels are connected to a mounting frame with the mounting frame being connected to pivotable linkages with at least one of the linkages being connected to a spring, such that the expansion or contraction of the spring allows the drive wheels to move relative to the longitudinal axis, and the rotational portion being coupled to a motor, the rotational motor having a gear system that connects to the drive portion and causes a rotation of the drive portion about the central longitudinal axis within the housing.

公开(公告)号：US20250012194A1

公开(公告)日：2025-01-09

申请号：US18746279

申请日：2024-06-18

Applicant: ROLLS-ROYCE plc

Inventor： Christopher NEALE ,  James R. KINGSLEY-ROWE

IPC: F01D5/18

Abstract: A gas turbine engine component that has a web provided with an array of cooling holes distributed with respect to a first direction, wherein the cooling holes have a cross-sectional shape that varies along the first direction. The component may be configured so that the first direction corresponds to a loading distribution of the component which increases along the first direction from a low loading position to a high loading position.

公开(公告)号：US20250003592A1

公开(公告)日：2025-01-02

申请号：US18882197

申请日：2024-09-11

Applicant: ROLLS-ROYCE plc

Inventor： Christopher P. MADDEN ,  Craig W BEMMENT ,  Andrew T SMITH ,  Peter SWANN

IPC: F23R3/28 ,  B64D27/10 ,  F02C7/264

Abstract: A method of operating a gas turbine engine; the gas turbine engine includes a combustor. The combustor includes a combustion chamber and a plurality of fuel spray nozzles configured to inject fuel into the combustion chamber. The plurality of fuel spray nozzles includes a first subset of fuel spray nozzles and a second subset of fuel spray nozzles. The combustor is operable in a condition in which the first subset of fuel spray nozzles are supplied with more fuel than the second subset of fuel spray nozzles. A ratio of the number of fuel spray nozzles in the first subset of fuel spray nozzles to the number of fuel spray nozzles in the second subset of fuel spray nozzles is in the range of 1:2 to 1:5. The method includes: providing fuel to the one or more fuel-oil heat exchangers. Also provided is a gas turbine engine for an aircraft.

公开(公告)号：US12180899B2

公开(公告)日：2024-12-31

申请号：US17853191

申请日：2022-06-29

Applicant: ROLLS-ROYCE plc

Inventor： Peter Swann ,  Craig W Bemment ,  Christopher P Madden

IPC: F02C9/26 ,  B64D27/10 ,  B64D37/30 ,  F02C7/22 ,  F23R3/36

Abstract: A gas turbine engine for an aircraft, including: staged combustion system having pilot fuel injectors and main fuel injectors, staged combustion system being operable in pilot-only range of operation and pilot-and-main range of operation; and fuel delivery regulator arranged to control delivery of fuel to pilot and main fuel injectors. Fuel delivery regulator arranged to receive fuel from a first fuel source containing a first fuel having a first fuel characteristic and a second fuel source containing a second fuel having a different second fuel characteristic. The fuel delivery regulator is arranged to deliver fuel to the pilot fuel injectors during at least part of the pilot-only range of operation having a different fuel characteristic from fuel delivered to one or both of the pilot and main fuel injectors during at least part of the pilot-and-main range of operation. A method of operating a gas turbine engine is also disclosed.

公开(公告)号：US20240426252A1

公开(公告)日：2024-12-26

申请号：US18829971

申请日：2024-09-10

Applicant: ROLLS-ROYCE PLC

Inventor： Mark SPRUCE

IPC: F02C7/36 ,  F02K3/06

Abstract: A gas turbine engine for an aircraft including: an engine core including a turbine, a compressor, and a core shaft connecting the turbine to the compressor; a fan located upstream of the engine core, the fan including a plurality of fan blades; a gearbox that can receive an input from the core shaft, and can output drive to a fan shaft via an output of the gearbox so as to drive the fan at a lower rotational speed than the core shaft; and a fan shaft mounting structure arranged to mount the fan shaft within the engine, the fan shaft mounting structure including at least two supporting bearings connected to the fan shaft.

公开(公告)号：US20240426251A1

公开(公告)日：2024-12-26

申请号：US18825435

申请日：2024-09-05

Applicant: ROLLS-ROYCE plc

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

IPC: F02C7/36 ,  F01D5/28 ,  F01D5/30 ,  F02C3/073

Abstract: A highly efficient gas turbine engine is provided. 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：US12172763B2

公开(公告)日：2024-12-24

申请号：US18333873

申请日：2023-06-13

Applicant: ROLLS-ROYCE plc

Inventor： David R. Trainer ,  Francisco Javier Chivite Zabalza ,  Mark Sweet ,  Gian Incerpi

IPC: B64D27/24 ,  B64D27/10 ,  H02J1/00 ,  H02M7/219 ,  H02P9/02 ,  B64D27/02

Abstract: The disclosure relates to an electrical power system for connecting an electrical machine to first and second DC networks operating at different voltages. In an embodiment, an electrical power system comprises: an electrical machine having first, second, third and fourth windings; first, second, third and fourth AC:DC power electronics converters each connected to receive an input AC supply from the respective first, second, third and fourth windings, each AC:DC power electronics converter having first and second DC output terminals connecting the AC:DC power electronics converters to first, second and third DC supply output terminals, wherein the first and second windings are arranged to provide an AC supply to the respective first and second AC:DC power electronics converters in quadrature to each other and the third and fourth windings are arranged to provide an AC supply to the respective third and fourth AC:DC power electronics converters in quadrature to each other.

公开(公告)号：US12172757B2

公开(公告)日：2024-12-24

申请号：US18155351

申请日：2023-01-17

Applicant: ROLLS-ROYCE plc ,  Rolls-Royce Corporation

Inventor： Christopher A. Murray ,  Nicholas Howarth ,  Daniel Swain ,  Ian J. Bousfield

IPC: B64D13/06 ,  F02C7/32 ,  F04D25/04 ,  F04D29/68

Abstract: There is provided a blower system for providing air to an airframe system, comprising a rotor configured to be mechanically coupled to a spool 440 of a gas turbine engine, wherein the rotor is configured to: in a blower mode, be driven to rotate by the spool to discharge air to an airframe discharge port for supply to an airframe system; and, in an engine drive mode, receive air from an external air source via an impingement port that is configured to direct the received air onto the rotor and thereby drive the rotor to rotate to drive the spool to.

公开(公告)号：US20240417084A1

公开(公告)日：2024-12-19

申请号：US18672375

申请日：2024-05-23

Applicant: ROLLS-ROYCE PLC

Inventor： Chandana J. GAJANAYAKE ,  Devinda A. Molligoda

IPC: B64D27/35 ,  H01M8/04537 ,  H01M8/04858 ,  H01M10/42 ,  H01M16/00 ,  H02J1/08 ,  H02J7/00 ,  H02J7/34

Abstract: An electrical system includes: a battery; a fuel-cell pack; a load electrically coupled to the fuel-cell pack; a switching arrangement electrically coupled to the battery, the fuel-cell pack and the load; a DC-DC converter; and a control system. The switching arrangement configures the electrical system in at least one of a battery-charge mode and a combined-drive mode. In the battery-charge mode the battery is coupled in series to the fuel-cell pack and the load via the DC-DC converter for simultaneous charging of the battery and driving of the load by the fuel-cell pack. In the combined-drive mode, the battery is coupled in series to the fuel-cell pack and the load via the DC-DC converter for driving of the load by both the battery and the fuel-cell pack. The control system is configured to: monitor a parameter of an electrical power provided to the load; and control the DC-DC converter.