BUSBAR COMPRISING TABS AND FUSE LINKThere is provided a busbar () comprising a plurality of tabs (), a fuse link () and a cartridge (). The plurality of tabs () are offset from one another along a separation direction (), with each tab …DRIVE·May 28·1 min readFollowH01M50/588ROLLS-ROYCE plc
ELECTRICAL POWER SYSTEMS AND METHODSAn electrical power system including a plurality of electrical devices, a distribution network and a control system. The control system is configured to detect an electrical fault associated with the …DRIVE·Jun 19·1 min readFollowB64D31/16ROLLS-ROYCE plc
PROPULSION SYSTEM COMPRISING A HYDROGEN-BURNING GAS TURBINE ENGINEA propulsion system comprises a propulsive hydrogen-burning gas turbine engine, a first tank storing liquid hydrogen with an ullage and a first fuel line including a fuel pump and a vaporiser, the fir…DRIVE·May 15·1 min readFollowF02C7/22ROLLS-ROYCE plc
POWER SUPPLY REDUNDANCY CIRCUITA power routing circuit having first and second input nodes VIN VIN for connection to first and second power supplies and output node VOUT for load connection; and includes a first main switching circ…DRIVE·Dec 19·2 min readFollowH02J1/086ROLLS-ROYCE plc
Electrical Power System Converter ControlAn electrical machine with a rotor coupled to a drive shaft of an engine; a DC electrical network; a power electronics converter connected, on a DC-side, to the DC electrical network, and, on an AC-si…DRIVE·Feb 22·1 min readFollowH02M7/219ROLLS-ROYCE plc
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 embodiment, an electrical power system …DRIVE·Jan 4·1 min readFollowB64D27/24ROLLS-ROYCE plc
HYDROGEN-FUELLED AIRCRAFT POWER SYSTEMA hydrogen-fuelled aircraft power system incorporates a gas turbine engine and a fuel cell, in which air supply and cooling of the fuel cell is integrated with the gas turbine engine to improve overal…DRIVE·Dec 7·1 min readFollowB64D37/30ROLLS-ROYCE plc
POWER ELECTRONICS CONVERTERA power electronics converter comprising: first and second input terminals; first and second DC output terminals; a branch comprising first and second semiconductor switches connected in series betwee…DRIVE·Nov 23·1 min readFollowB60L50/00ROLLS-ROYCE plc
ELECTRICAL POWER SYSTEMThe disclosure relates to an electrical power system for providing a stabilised DC voltage to a power bus. Example embodiments include an electrical power system comprising: a DC power bus having firs…DRIVE·May 25·1 min readFollowB64D27/24ROLLS-ROYCE plc
ELECTRICAL CONVERTERThe disclosure relates to electrical converters for use in aircraft electrical power systems and to methods of operating such electrical converters to maintain reliable operation of semiconductor comp…DRIVE·May 4·1 min readFollowB60L15/007ROLLS-ROYCE plc
ELECTRICAL POWER SYSTEM CONVERTER CONTROLAn electrical power system includes: an electrical machine to output AC; DC electrical network; power electronics converter connected between the AC output of the electrical machine and the DC electri…DRIVE·Apr 20·1 min readFollowF02C6/00ROLLS-ROYCE plc
ELECTRICAL POWER SYSTEM CONVERTER CONTROLA electrical power system comprises: an electrical machine operable to output AC; a DC electrical network; a power electronics converter connected between the AC output of the electrical machine and t…DRIVE·Apr 20·1 min readFollowF02C6/00ROLLS-ROYCE plc
AIRCRAFT PROPULSION SYSTEMAn aircraft propulsion system comprises a gas turbine engine arranged to provide propulsive thrust and a fuel cell system having an air input port, the aircraft propulsion system being configured such…DRIVE·Apr 20·1 min readFollowB64D27/10ROLLS-ROYCE plc
AIRCRAFT BATTERY SYSTEMSAircraft with battery thermal regulation systems, including: an aircraft air inlet and an aircraft air outlet; a battery pack including battery cells; and a battery thermal regulation system including…DRIVE·Dec 22·1 min readFollowB60L58/26ROLLS-ROYCE plc
AIRCRAFT BATTERY SYSTEMSAn aircraft including a battery pack having a plurality of battery cells arranged to vent into a venting region of the battery pack. A path is defined between the venting region and an exterior of the…DRIVE·Dec 22·1 min readFollowB64D27/24ROLLS-ROYCE plc
ELECTRICAL POWER SYSTEMSElectrical power systems for distributing electrical power in arrangements including one or more gas turbine engines; one such system includes: one or more rotary electric machines, coupled to a gas t…DRIVE·Sep 8·1 min readFollowF01D15/10ROLLS-ROYCE plc
COMPOSITE STORAGE TANK SYSTEM FOR GASEOUS HYDROGENA composite storage tank system for gaseous hydrogen comprises a composite storage tank having composite wall enclosing a gas storage volume, the composite wall including a metal hydride element, or a…DRIVE·Mar 31·1 min readFollowF17C11/005ROLLS-ROYCE plc
COMPOSITE STORAGE TANK FOR GASEOUS HYDROGENA composite storage tank comprises a composite wall enclosing a gas storage volume and defining a cylindrical portion () of the tank. The composite wall incorporates first) and second sets of metallic…DRIVE·Mar 3·1 min readFollowF17C1/005ROLLS-ROYCE plc
BATTERY CASEA battery case for housing a battery and a method of fabricating such a battery case are provided. The battery case may be a battery case for an aircraft. The battery case comprises an enclosure havin…DRIVE·Jan 20·1 min readFollowH01M50/231ROLLS-ROYCE plc
AIRCRAFT ELECTRICAL POWER DISTRIBUTIONA method of operating an aircraft electrical power distribution system comprises determining a measure of ambient pressure; and setting a target operating voltage in accordance with the measure of amb…DRIVE·Dec 2·1 min readFollowB64D27/24ROLLS-ROYCE plc
ELECTRICAL POWER DISTRIBUTIONElectrical power distribution systems and methods of operating electrical power distribution systems are provided. One electrical power distribution system comprises: an electrical power storage unit;…DRIVE·Mar 11·1 min readFollowH02M3/33584ROLLS-ROYCE plc
ELECTRICAL SYSTEMSElectrical systems for connecting rotary electric machines with gas turbine spools are provided. One such electrical system comprises: a first rotary electric machine mechanically coupled with a first…DRIVE·Mar 11·2 min readFollowF02C3/113ROLLS-ROYCE plc
TURBOMACHINEAn axial flow turbomachine () for producing thrust to propel an aircraft is shown. The turbomachine has an inner duct () and an outer duct (), both of which are annular and concentric with one another…DRIVE·Apr 2·1 min readFollowF01D5/022ROLLS-ROYCE plc
