公开(公告)号：US12085280B2

公开(公告)日：2024-09-10

申请号：US18176784

申请日：2023-03-01

Applicant: ROLLS-ROYCE plc

Inventor： Nathan Clark ,  Robert J. Miller ,  Chloe J Palmer ,  Jacopo Tacconi

IPC: F23R3/00 ,  F02C7/224 ,  F02C7/36

CPC classification number: F23R3/005 ,  F02C7/224 ,  F02C7/36 ,  F05D2260/40311

Abstract: A combined cycle engine is formed of a gas turbine cycle coupled with a fuel expansion cycle in which fuel for the gas turbine cycle is the working fluid of the fuel expansion cycle. The fuel expansion cycle comprises, in flow series, a fuel pump for pumping a cryogenic fuel for the gas turbine cycle, a first heat exchanger for heating the fuel, an expander to recover power by expansion of the fuel and to thereby drive a load, and a second heat exchanger to reheat the fuel. The gas turbine cycle comprises, in flow series, a compressor, a combustor for combustion of reheated fuel delivered from the second heat exchanger, and a turbine configured to drive the compressor. The first heat exchanger and the second heat exchanger are stationed downstream of the combustor and configured to transfer heat from combustion products to the fuel in the fuel expansion cycle.

公开(公告)号：US12270341B2

公开(公告)日：2025-04-08

申请号：US18379717

申请日：2023-10-13

Applicant: ROLLS-ROYCE PLC

Inventor： Chloe J Palmer ,  Jacopo Tacconi ,  Nicholas Grech

IPC: F02C7/224 ,  F02C3/22 ,  F02C7/14

Abstract: A gas turbine engine fuel system includes a fuel offtake configured to divert a portion of hydrogen fuel from a main fuel conduit, a burner configured to burn the portion of hydrogen fuel diverted from the main fuel conduit, a heat exchanger configured to transfer heat from exhaust gasses produced by the burner to hydrogen fuel in the main fuel conduit and a power recovery device configured to extract power from exhaust gasses of the burner downstream of the heat-exchanger.

公开(公告)号：US11970975B2

公开(公告)日：2024-04-30

申请号：US17476129

申请日：2021-09-15

Applicant: ROLLS-ROYCE PLC

Inventor： Chloe J Palmer ,  Guy D Snowsill ,  Jonathan E Holt

IPC: F02C7/224 ,  F02C3/20 ,  F02C3/22 ,  F02C7/04 ,  F02C7/14 ,  F02C7/143 ,  F02C7/18 ,  F02C7/22 ,  F23R3/04 ,  F23R3/28 ,  F02C9/40

CPC classification number: F02C7/224 ,  F02C3/20 ,  F02C3/22 ,  F02C7/04 ,  F02C7/14 ,  F02C7/143 ,  F02C7/18 ,  F02C7/22 ,  F02C7/222 ,  F23R3/04 ,  F23R3/286 ,  F02C9/40 ,  F05D2220/32 ,  F05D2240/35

Abstract: A fuel delivery system (201) is shown for delivering the hydrogen fuel from a cryogenic storage system to a fuel injection system in a gas turbine engine. The fuel delivery system includes a pump (301), a metering device (302), and a fuel heating system (303,304) for heating the hydrogen fuel to an injection temperature for the fuel injection system.

公开(公告)号：US12221924B2

公开(公告)日：2025-02-11

申请号：US18379728

申请日：2023-10-13

Applicant: ROLLS-ROYCE PLC

Inventor： Nicholas Grech ,  Chloe J Palmer ,  Jacopo Tacconi

IPC: F02C6/04 ,  F02C7/224 ,  F02C9/40 ,  H01M8/04111

Abstract: A combined gas turbine engine and hydrogen fuel cell system includes a hydrogen fuelled gas turbine engine, a cryogenic liquid hydrogen fuel tank, a first fuel offtake configured and arranged to divert a portion of hydrogen fuel from a main fuel conduit, a burner configured and arranged to burn the portion of hydrogen fuel diverted from the main fuel conduit, a heat exchanger configured and arranged to transfer heat from exhaust gasses produced by the burner to hydrogen fuel in the main fuel conduit, a second fuel offtake arranged to divert a portion of hydrogen fuel from the main fuel conduit downstream of the heat exchanger, and a hydrogen fuel cell configured and arranged to produce electric power using hydrogen fuel diverted from the second fuel offtake.

公开(公告)号：US10594187B2

公开(公告)日：2020-03-17

申请号：US16217243

申请日：2018-12-12

Applicant: ROLLS-ROYCE PLC

Inventor： Chloe J Palmer

IPC: F16H1/28 ,  H02K7/116 ,  F02K3/06 ,  F02C7/36 ,  F16H57/08 ,  H02K7/18 ,  F02C7/32 ,  F01D15/10 ,  H02K21/24 ,  F16H57/02

Abstract: An epicyclic geartrain comprises a sun gear, a plurality of planet gears, and a ring gear. The plurality of planet gears is supported by a planet torque ring. The planet gears meshingly surround the sun gear, and the ring gear meshingly surrounds the planet gears. At least one of the sun gear, the plurality of planet gears, and the ring gear, is provided with a plurality of permanent magnet portions. Each of the plurality of magnet portions is arranged as a circumferential array. The planet torque ring is provided with at least one stator coil array, with the or each stator coil array being positioned in axial alignment with the or each corresponding plurality of permanent magnet portions as an axial flux electric motor generator element.

公开(公告)号：US12222147B2

公开(公告)日：2025-02-11

申请号：US17761429

申请日：2020-09-03

Applicant: ROLLS-ROYCE PLC

Inventor： Ian M Bunce ,  Chloe J Palmer

IPC: F25B9/06 ,  F25B9/00 ,  F25B43/04

Abstract: A trans-critical thermodynamic system includes an expansion device and a separator. The expansion device receives a supercritical fluid containing solutes. The expansion device is operable to expand the supercritical fluid to produce a sub-critical gas by reducing a temperature and/or a pressure of the supercritical fluid. The separator removes the solutes from the sub-critical gas.

公开(公告)号：US12006871B2

公开(公告)日：2024-06-11

申请号：US17476311

申请日：2021-09-15

Applicant: ROLLS-ROYCE plc

Inventor： Chloe J Palmer ,  John R Whurr

IPC: F02C7/224 ,  F02C3/20 ,  F02C3/22 ,  F02C7/04 ,  F02C7/14 ,  F02C7/143 ,  F02C7/18 ,  F02C7/22 ,  F23R3/04 ,  F23R3/28 ,  F02C9/40

CPC classification number: F02C7/224 ,  F02C3/20 ,  F02C3/22 ,  F02C7/04 ,  F02C7/14 ,  F02C7/143 ,  F02C7/18 ,  F02C7/22 ,  F02C7/222 ,  F23R3/04 ,  F23R3/286 ,  F02C9/40 ,  F05D2220/32 ,  F05D2240/35

Abstract: A complex cycle gas turbine engine for an aircraft with hydrogen fuel supply. The gas turbine engine comprises, in fluid flow series, a core gas turbine and a recuperator for heating hydrogen fuel prior to combustion by turbine exhaust products.

公开(公告)号：US10690231B2

公开(公告)日：2020-06-23

申请号：US16217216

申请日：2018-12-12

Applicant: ROLLS-ROYCE PLC

Inventor： Chloe J Palmer

IPC: F16H57/04 ,  F02C7/36 ,  B03C1/28 ,  F02K3/06 ,  F16H1/28

Abstract: An epicyclic geartrain includes a debris collection arrangement. The epicyclic geartrain comprises a sun gear, a plurality of planet gears, with the plurality of planet gears being supported by a planet torque ring, and a ring gear. The planet gears meshingly surround the sun gear, and the ring gear meshingly surrounds the planet gears.At least one of the sun gear, the plurality of planet gears, and the ring gear, is provided with a plurality of permanent magnet portions, and a debris collection element. The plurality of magnet portions is arranged as a circumferential array across a side of the corresponding gear. The debris collection element extends along the side face of the gear. The debris collection element is slidably positioned against the side face, such that rotation of the gear causes the debris collection element to remove any ferromagnetic debris particles that are magnetically attached to the side face.