公开(公告)号：US11041441B2

公开(公告)日：2021-06-22

申请号：US16269814

申请日：2019-02-07

申请人： ROLLS-ROYCE plc

发明人： Stephen M. Husband ,  Ahmed My Razak

IPC分类号： F02C7/26 ,  F01D19/00 ,  F02C7/275 ,  F02C7/262 ,  F02C9/20

摘要： A method of controlling at least a part of a start-up or re-light process of a gas turbine engine, the method comprising: controlling rotation of a low pressure compressor using a first electrical machine to increase angular velocity of the low pressure compressor; and controlling rotation of a high pressure compressor using a second electrical machine to restrict angular velocity of the high pressure compressor while the angular velocity of the low pressure compressor is increased.

公开(公告)号：US11492930B2

公开(公告)日：2022-11-08

申请号：US17078805

申请日：2020-10-23

申请人： ROLLS-ROYCE PLC

发明人： Ahmed My Razak

IPC分类号： F01D25/30 ,  F01D15/10

摘要： A carbon capture system comprising a gas turbine with a heat exchanger operable to heat a working fluid in the gas turbine, a source of high temperature exhaust gas operable to supply heat to the gas turbine through heat exchanger to heat the working fluid wherein the source of high temperature exhaust gas is operable to provide exhaust gas at a high pressure which is greater than the vapor to liquid transition pressure of CO2 at the temperature of a coolant.

公开(公告)号：US11572182B2

公开(公告)日：2023-02-07

申请号：US15984555

申请日：2018-05-21

申请人： ROLLS-ROYCE plc

发明人： Ahmed My Razak

IPC分类号： B64D27/24 ,  F04D25/06 ,  F01D15/10 ,  B64D33/00 ,  H02K5/124 ,  B64D27/10 ,  B64D27/02 ,  F04C2/344

摘要： An electric machine (101) for use in an aircraft is shown. The electric machine comprises a casing (104) containing electromechanical components, a shaft (106) which extends outside of the casing, a seal (107) to seal the casing around the shaft, and a depressurisation system (102) configured to depressurise the casing below an external pressure to prevent electrical breakdown within gas in the casing.

公开(公告)号：US10683754B2

公开(公告)日：2020-06-16

申请号：US16139265

申请日：2018-09-24

申请人： ROLLS-ROYCE plc

发明人： Chloe J. Palmer ,  Jia Qing Alastair Milton Sim ,  Ahmed My Razak

IPC分类号： F01B17/02 ,  F02M23/00 ,  F02M25/00 ,  F02M31/00 ,  F01K25/06 ,  F01L1/38 ,  F02B1/10 ,  F02B1/14 ,  F02B75/02

摘要： A method of controlling a reciprocating internal combustion engine comprising: a cylinder defining a cavity having a first end and a second end; and a piston moveable within the cavity of the cylinder between the first end and the second end, the method comprising: receiving at least a first signal; determining a quantity of liquid air to be injected using at least the received first signal; controlling injection of the determined quantity of liquid air into the first end of the cavity at a first time when the piston is closer to the first end than the second end.

公开(公告)号：US11685541B2

公开(公告)日：2023-06-27

申请号：US17837100

申请日：2022-06-10

申请人： ROLLS-ROYCE plc

发明人： Ahmed My Razak

IPC分类号： F02C7/224 ,  B64D33/02 ,  B64D27/16 ,  F02C3/22 ,  F02C7/04 ,  F02C7/08

CPC分类号： B64D33/02 ,  B64D27/16 ,  F02C3/22 ,  F02C7/04 ,  F02C7/08 ,  F02C7/224 ,  B64D2033/024 ,  B64D2033/026 ,  B64D2033/0273

摘要： An air-breathing turbojet engine for a hypersonic vehicle is shown. The engine comprises a pump for pumping a cryogenic fuel, an inlet configured to compress inlet air by one or more shocks, a cooler to cool the compressed inlet air using the cryogenic fuel, and a turbo-compressor to compress the air further. A precooler cools the compressed inlet air using compressed cooled air from the turbo-compressor. A combustor receives compressed cooled air from the turbo-compressor and a first portion of the cryogenic fuel for combustion. A first turbine expands and is driven by combustion products, and a second turbine expands and is driven by a second portion of the cryogenic fuel. The first turbine and the second turbine drive the turbo-compressor via a shaft. An afterburner receives combustion products from the first turbine and the second portion of the cryogenic fuel from the second turbine for combustion therein.

公开(公告)号：US11303181B2

公开(公告)日：2022-04-12

申请号：US15984544

申请日：2018-05-21

申请人： ROLLS-ROYCE plc

发明人： Ahmed My Razak ,  Ellis F H Chong

IPC分类号： H02K5/124 ,  H02K5/12 ,  B64D13/02 ,  B64D27/10 ,  B64D27/24 ,  B64D27/02 ,  F01D15/08 ,  B64D13/06 ,  F02C3/04

摘要： An electric machine (101) for use in an aircraft is shown. The electric machine comprises a casing (104) containing electromechanical components, a shaft (106) which extends outside of the casing, a seal (107) to seal the casing around the shaft, and a pressurisation system (102) configured to pressurise the casing above an external pressure to prevent electrical breakdown within gas in the casing.

公开(公告)号：US11383852B2

公开(公告)日：2022-07-12

申请号：US16866908

申请日：2020-05-05

申请人： ROLLS-ROYCE plc

发明人： Ahmed My Razak

IPC分类号： F02C7/224 ,  B64D33/02 ,  B64D27/16 ,  F02C3/22 ,  F02C7/04 ,  F02C7/08

摘要： An air-breathing turbojet engine (101) for a hypersonic vehicle is shown. The engine comprises a pump for pumping a cryogenic fuel, an inlet (102) configured to compress inlet air by one or more shocks, a cooler (103) to cool the compressed inlet air using the cryogenic fuel, and a turbo-compressor (104) to compress the air further. A combustor (105) receives compressed cooled air from the turbo-compressor and a first portion of the cryogenic fuel for combustion. A first turbine (106) expands and is driven by combustion products, and a second turbine (107) expands and is driven by a second portion of the cryogenic fuel. The first turbine and the second turbine drive the turbo-compressor via a shaft. An afterburner (109) receives combustion products from the first turbine and the second portion of the cryogenic fuel from the second turbine for combustion therein.

公开(公告)号：US10718211B2

公开(公告)日：2020-07-21

申请号：US16139246

申请日：2018-09-24

申请人： ROLLS-ROYCE plc

发明人： Chloe J. Palmer ,  Jia Qing Alastair Milton Sim ,  Ahmed My Razak

IPC分类号： F01B17/02 ,  F01K25/06 ,  F02M31/00 ,  F02M25/00 ,  F02M23/00 ,  F01L1/38 ,  F02B1/10 ,  F02B1/14 ,  F02B75/02

摘要： A method of controlling a reciprocating internal combustion engine comprising: a cylinder defining a cavity having a first end and a second end; and a piston moveable within the cavity of the cylinder between the first end and the second end, the method comprising: controlling injection of a quantity of liquid air, without fuel, into the first end of the cavity at a first time when the piston is closer to the first end than the second end to cause the piston to perform a first power stroke; and controlling injection of fuel into the first end of the cavity at a second time when the piston is closer to the first end than the second end to cause the piston to perform a second power stroke.