REHEAT ASSEMBLY FOR A GAS TURBINE ENGINEThe foregoing describes a reheat assembly for a gas turbine engine. The reheat assembly comprises a support duct section, a vaporiser and a heat shield. The support duct section comprises a core side …DRIVE·4d ago·2 min readFollowF02C7/224ROLLS ROYCE PLC [GB]
GAS TURBINE ENGINE WITH STAGED COMBUSTION AND OPERATING METHODA gas turbine engine for an aircraft. The gas turbine comprises a staged combustion system having pilot injectors (305) and main injectors (306), a fuel metering system (211) configured to control fue…DRIVE·4d ago·1 min readFollowF02C3/30ROLLS ROYCE PLC [GB]
REHEAT ASSEMBLY FOR A GAS TURBINE ENGINEThe foregoing describes a reheat assembly (300) for a gas turbine engine (100). The reheat assembly (300) comprises:a support duct section (321') comprising a core side (322') for facing a core reheat…DRIVE·4d ago·1 min readFollowF02C7/228ROLLS ROYCE PLC [GB]
ELECTRICAL POWER SYSTEMThe disclosure relates to an electrical power system for connecting an electrical machine to first and second DC networks operating at different voltages. In an example embodiment, an electrical power…DRIVE·Jun 3·2 min readFollowB64D27/10ROLLS ROYCE PLC [GB]
ELECTRICAL POWER SYSTEMThe disclosure relates to an electrical power system for connecting an electrical machine to first and second DC networks operating at different voltages. Example embodiments include an electrical pow…DRIVE·Jun 3·2 min readFollowH02J1/082ROLLS ROYCE PLC [GB]
SCHEDULING THE POWER OF A GAS TURBINE POWER SYSTEMA power event manager controller for a gas turbine engine power system, the gas turbine engine power system comprising at least one gas turbine engine, a thermal management system and at least one of …DRIVE·Jun 3·1 min readFollowF02C9/00ROLLS ROYCE PLC [GB]
PROPULSION SYSTEM COMPRISING A HYDROGEN-BURNING GAS TURBINE ENGINEA propulsion system 100 comprises a propulsive hydrogen-burning gas turbine engine 190A, a first tank 106 storing liquid hydrogen with an ullage 105 and a first fuel line 108 including a fuel pump 112…DRIVE·May 27·1 min readFollowB64D37/30ROLLS ROYCE PLC [GB]
BUSBAR COMPRISING TABS AND A FUSE LINKThere is provided a busbar (300, 301, 302) comprising a plurality of tabs (312, 314, 316), a fuse link (323, 325) and a cartridge (333, 335). The plurality of tabs (312, 314, 316) are offset from one …DRIVE·May 27·1 min readFollowH01M50/503ROLLS ROYCE PLC [GB]
ROTARY SERVO FOR FIXED FAIL ACTUATORSIn general, techniques are described regarding a rotary servo for actuators. A servo assembly includes a cylindrical outer sleeve including ports, a cylindrical outer spool annularly disposed within t…DRIVE·May 6·1 min readFollowF01D17/16ROLLS ROYCE PLC [GB]
GAS TURBINE ENGINE HYDRAULIC SYSTEMA hydraulic system for a hydrogen fuelled gas turbine engine. The hydraulic system comprises a closed-loop hydraulic fluid conduit (232), a hydrogen-hydraulic fluid heat exchanger (230) configured to …DRIVE·Apr 15·1 min readFollowF02C3/22ROLLS ROYCE PLC [GB]
A GAS TURBINE ENGINEThere is disclosed a gas turbine engine (10) for an aircraft, the gas turbine engine comprising: a compressor stage; a bleed air line (50) diverted from the compressor stage; and a thermoelectric gene…DRIVE·Mar 25·2 min readFollowF02C6/08ROLLS ROYCE PLC [GB]
A BLOWER SYSTEMA blower system (400) for supplying pressurized air to an airframe of an aircraft comprises: an air inlet (422) for receiving air from an air source; an air outlet (426) for supplying pressurized air …DRIVE·Mar 11·2 min readFollowB64D13/02ROLLS ROYCE PLC [GB]
GAS TURBINE ENGINE FUEL SYSTEMA fuel system for a hydrogen fuelled gas turbine engine (201) comprises a main hydrogen fuel storage unit (104) configured to store liquid hydrogen. The main fuel storage unit (104) comprises an ullag…DRIVE·Mar 11·1 min readFollowB64D37/02ROLLS ROYCE PLC [GB]
A GAS TURBINE ENGINE AND A METHOD OF OPERATING A HEAT EXCHANGER ASSEMBLY FOR A GAS TURBINE ENGINEA gas turbine engine (10) comprises a bypass duct (22) and a heat exchanger assembly (101, 102, 103), the heat exchanger assembly (101, 102, 103) comprising a heat exchanger (130) and a heat exchanger…DRIVE·Mar 4·2 min readFollowF02C7/14ROLLS ROYCE PLC [GB]
ELECTRICALLY STARTING A GAS TURBINE ENGINEAircraft power and propulsion systems 400 and methods 600, 700 of starting gas turbine engines 101 of aircraft power and propulsion systems 400 are disclosed. In one example, an aircraft power and pro…DRIVE·Feb 25·2 min readFollowB64D27/10ROLLS ROYCE PLC [GB]
ELECTRICALLY STARTING A GAS TURBINE ENGINEAircraft power and propulsion systems 200 and methods 300 of starting gas turbine engines 101 of aircraft power and propulsion systems 200 are disclosed. In one example, an aircraft power and propulsi…DRIVE·Feb 18·2 min readFollowF02C7/266ROLLS ROYCE PLC [GB]
AIRCRAFT ENGINE FUEL SYSTEMAn aircraft propulsion system fuel system (224) comprises a fuel line (217) configured to receive liquid hydrogen fuel from a fuel tank (104), a vaporizer (612) configured to vaporize liquid hydrogen …DRIVE·Feb 4·1 min readFollowB64D37/30ROLLS ROYCE PLC [GB]
METHOD OF CONTRAIL MITIGATION AND AIRCRAFT HAVING CONTRAIL MITIGATION FUNCTIONALITYA method of mitigating contrails produced by an aircraft having a set of gas turbine engines (220, 230) comprises the steps of (i) for each engine in a first subset (220) of the engines, reducing the …DRIVE·Jan 21·2 min readFollowF02C6/00ROLLS ROYCE PLC [GB]
FUEL CONTROL SYSTEMA fuel control system (100) for a gas turbine engine (10) includes a fuel metering valve (140), a pressure raising and shut-off valve (PRSOV) (160), and a shutoff effector (200) including a first stag…DRIVE·Jan 21·2 min readFollowF02C7/232ROLLS ROYCE PLC [GB]
TURBINE OVERSPEED PROTECTIONAn apparatus and method for reducing a pressure differential across a turbine 19 of a gas turbine engine 10 during a shaft break event, comprises a pressure equalization apparatus 200, 300, 400, 500, …DRIVE·Jan 21·1 min readFollowF01D11/06ROLLS ROYCE PLC [GB]
TURBINE OVERSPEED PROTECTIONAn apparatus and method for reducing a pressure differential across a turbine 19 of a gas turbine engine 10 during a shaft break event, comprises a pressure equalization apparatus 300, 400, 500, 600, …DRIVE·Jan 21·1 min readFollowF01D11/06ROLLS ROYCE PLC [GB]
GAS TURBINE ENGINE INCORPORATING A VARIABLE GEAR RATIO ELECTRICAL MACHINEAn electrical machine (30) comprising a moveable permanent magnet component (32) configured to generate a first magnetic field. A stator (44) comprising windings configured to excite a second magnetic…DRIVE·Jan 7·1 min readFollowF01D15/10ROLLS ROYCE PLC [GB]
COMBINATION OF A GAS TURBINE ENGINE AND A POWER ELECTRONICSThe present invention provides a combination of a gas turbine engine and a power electronics for powering aircraft and/or engine systems. The engine includes an engine core and an oil circuit configur…DRIVE·Dec 31·2 min readFollowF01D25/12ROLLS ROYCE PLC [GB]
VANE ASSEMBLY FOR A GAS TURBINE ENGINEA vane assembly (200) for a gas turbine engine (10). The vane assembly is a single unitary component that includes an aerofoil (202). The vane assembly further includes a leading edge passageway (230)…DRIVE·Dec 31·2 min readFollowF01D25/02ROLLS ROYCE PLC [GB]
COMPUTER-IMPLEMENTED METHODS FOR ENABLING OPTIMISATION OF DERATE FOR A PROPULSION SYSTEM OF A VEHICLEA computer-implemented method of enabling optimisation of derate for a propulsion system of a vehicle, the method comprising: determining a derate for the propulsion system of the vehicle using: an al…DRIVE·Dec 31·1 min readFollowB64D31/00ROLLS ROYCE PLC [GB]
TURBOFAN WITH AIR-COOLED HEAT EXCHANGER IN THE INLET FLOW UPSTREAM OF THE FANA turbofan gas turbine engine comprises, in axial flow sequence, a heat exchanger module, a fan assembly, a compressor module, a turbine module, and an exhaust module. The fan assembly comprises a plu…DRIVE·Dec 17·2 min readFollowF01D25/12ROLLS ROYCE PLC [GB]
AIRCRAFT COMPRISING A CABIN BLOWER SYSTEMAn aircraft comprises a turbofan engine 201A, a cabin blower system 210 and a PEM fuel cell stack 242. The cabin blower system 210 includes a cabin blower compressor 216 arranged to be driven by mecha…DRIVE·Dec 10·2 min readFollowB64D13/02ROLLS ROYCE PLC [GB]
AIR PRESSURISATION SYSTEMThere is provided an air pressurisation system 400 comprising: a blower compressor 420 configured to be mechanically coupled to a spool 440 of a gas turbine engine and configured to receive a first in…DRIVE·Dec 3·2 min readFollowB64D13/02ROLLS ROYCE PLC [GB]
FLEET FUEL ALLOCATIONThe present application discloses a computer implemented method (4090) of determining a fleetwide fuel allocation for a plurality of missions carried out by a plurality of aircraft, the plurality of m…DRIVE·Nov 26·2 min readFollowF02C7/22ROLLS ROYCE PLC [GB]
AN IMPROVED TURBOFAN GAS TURBINE ENGINEA turbofan gas turbine engine comprises, in axial flow sequence, a heat exchanger module, an inlet duct, a fan assembly, a compressor module, and a turbine module. The fan assembly comprises a plurali…DRIVE·Nov 19·1 min readFollowF01D25/12ROLLS ROYCE PLC [GB]
GAS TURBINE ENGINEA fuel system (200) for a hydrogen fuelled aircraft propulsion system (103) comprises a tank (104) configured to store hydrogen, a first inductor (436a-c) provided within the tank (104) and configured…DRIVE·Nov 19·1 min readFollowB64D37/10ROLLS ROYCE PLC [GB]
TURBOFAN WITH AIR-COOLED HEAT EXCHANGER IN THE INLET FLOW UPSTREAM OF THE FANA turbofan gas turbine engine comprises, in axial flow sequence, a heat exchanger module, a fan assembly, a compressor module, and a turbine module. The fan assembly comprises a plurality of fan blade…DRIVE·Nov 19·2 min readFollowF01D25/12ROLLS ROYCE PLC [GB]
A COMBUSTION SYSTEMA combustion system (120) comprising: a combustion chamber (122) extending in an axial direction between an inlet (124) and an outlet (126), the combustion chamber configured to receive an airflow thr…DRIVE·Nov 19·1 min readFollowF02C7/266ROLLS ROYCE PLC [GB]
A THERMAL MANAGEMENT SYSTEM FOR AN AIRCRAFTA thermal management system for an aircraft comprises a first gas turbine engine, a first thermal bus, a first heat exchanger, and a chiller. The first thermal bus comprises a first heat transfer flui…DRIVE·Nov 12·1 min readFollowF02C7/12ROLLS ROYCE PLC [GB]
METHOD OF STARTING A GAS TURBINE ENGINEThere is provided a method 200 of starting a gas turbine engine, comprising: selecting a baseline starting procedure of the gas turbine engine based on environmental data for an environment around the…DRIVE·Nov 5·2 min readFollowF01D19/00ROLLS ROYCE PLC [GB]
CABIN BLOWER SYSTEMA cabin blower system 100, for an aircraft 50, comprising: a cabin blower compressor 102, for compressing air for delivery to a cabin 152 of an aircraft 50, comprising a compressor drive shaft 110 run…DRIVE·Nov 5·1 min readFollowB64D13/02ROLLS ROYCE PLC [GB]
AIRCRAFT REFUELLINGA method 2020 of refuelling an aircraft comprising a gas turbine engine and a fuel tank arranged to provide fuel to the gas turbine engine comprises obtaining 2022 an amount of energy required for an …DRIVE·Oct 22·1 min readFollowB64D27/10ROLLS ROYCE PLC [GB]
GAS TURBINE ENGINEA gas turbine engine (100) includes a core engine casing (114), a bypass duct (122) and a core engine duct (111). The gas turbine engine (100) further includes a plurality of flaps (130) pivotally cou…DRIVE·Oct 8·2 min readFollowF01D9/065ROLLS ROYCE PLC [GB]
A THERMAL MANAGEMENT SYSTEM FOR AN AIRCRAFTA thermal management system for an aircraft comprises a first thermal bus, with the first thermal bus comprising, in a closed loop flow sequence, one or more first heat sources, a heat sink, a vapour …DRIVE·Oct 1·2 min readFollowB64D33/08ROLLS ROYCE PLC [GB]
REHEAT ASSEMBLYThere is disclosed a reheat assembly (100) for a gas turbine engine, the reheat assembly comprising; a jetpipe casing (102,310) defining a reheat core section (104) configured to duct a core flow of a…DRIVE·Sep 24·2 min readFollowF02K3/10ROLLS ROYCE PLC [GB]
