公开(公告)号：US20230182918A1

公开(公告)日：2023-06-15

申请号：US17988538

申请日：2022-11-16

Applicant: ROLLS-ROYCE plc

Inventor： Gareth E MOORE ,  Paul R DAVIES ,  Stephen M HUSBAND ,  David R TRAINER ,  David P SCOTHERN ,  Luke GEORGE ,  Douglas M M HERBERT

IPC: B64D31/06 ,  B64D27/24 ,  F01D15/10 ,  B64D27/10

CPC classification number: B64D31/06 ,  B64D27/24 ,  F01D15/10 ,  B64D27/10 ,  B64D2027/026

Abstract: Aircraft power and propulsion systems and methods of operating the systems, one method includes: operating electric machines of gas turbine engines as generators to extract mechanical power from spools and generating electrical power therefrom; meeting an electrical power demand of a plurality of electrical loads connected with an electrical system by supplying the plurality of electrical loads with electrical power generated by the electric machines; determining when there is an electrical system and/or the gas turbine engine fault and an amount of electrical power generated by the power and propulsion system is reduced to a lower level; and responsive to the determination: during a time period ΔT, controlling the plurality of electrical loads reducing the electrical power demand; and during the time period ΔT, meeting at least part of the electrical power demand of the plurality of electrical loads by discharging the electrical energy storage system.

公开(公告)号：US20230184130A1

公开(公告)日：2023-06-15

申请号：US17988393

申请日：2022-11-16

Applicant: ROLLS-ROYCE plc

Inventor： Gareth E. MOORE ,  Paul R. DAVIES ,  Stephen M. HUSBAND ,  David R. TRAINER ,  David P. SCOTHERN ,  Luke GEORGE ,  Douglas M M HERBERT

IPC: F01D15/10 ,  F02C7/32

CPC classification number: F01D15/10 ,  F02C7/32

Abstract: Aircraft power and propulsion systems, aircraft comprising such power and propulsion systems, and methods of restarting a gas turbine engine of such power and propulsion systems during flight are provided. One such aircraft power and propulsion system comprises: a propulsive gas turbine engine comprising a plurality of spools, combustion equipment, one or more electric machines mechanically coupled with one or more of the spools and an electrically-powered fuel pump for delivering fuel to the combustion equipment; an electrical system connected with the one or more electric machines and the electrically-powered fuel pump, the electrical system comprising an energy storage system; and a control system configured to: responsive to a determination to the effect that a flame in the combustion equipment has been extinguished, control the electrical system to supply electrical power from the energy storage system to the fuel pump during an engine restart attempt.

公开(公告)号：US20230182920A1

公开(公告)日：2023-06-15

申请号：US17988341

申请日：2022-11-16

Applicant: ROLLS-ROYCE plc

Inventor： Gareth E MOORE ,  Paul R DAVIES ,  Stephen M HUSBAND ,  David R TRAINER ,  David P SCOTHERN ,  Luke GEORGE ,  Douglas M M HERBERT

IPC: B64D35/02 ,  B64D27/10 ,  B64D27/24 ,  B64D31/06

CPC classification number: B64D35/02 ,  B64D27/10 ,  B64D27/24 ,  B64D31/06 ,  B64D2027/026

Abstract: A twin-engine aircraft power and propulsion system including first and second propulsive gas turbine engines, each having combustion equipment and a first and second spool; first, second, third, and fourth electrical power generation sub-systems including electric machines respectively mechanically coupled with the first spool of the first propulsive gas turbine engine, the second spool of the first propulsive gas turbine engine, the first spool of the second propulsive gas turbine engine, and the second spool of the second propulsive gas turbine engine; and first, second, third, and fourth power channels respectively connected with distribution sides of the first electric machine, second electric machine, third electric machine, and fourth electric machine.