公开(公告)号：US20210229821A1

公开(公告)日：2021-07-29

申请号：US16774606

申请日：2020-01-28

Applicant: Rolls-Royce Corporation

Inventor： John Timothy Alt ,  Sara Jocelyn Abruzzo ,  Daniel Lawrence Phelps ,  David Russell Trawick

IPC: B64D27/24 ,  B64C7/02 ,  H02J1/08

Abstract: An example system includes a first plurality of nacelles located on a first side of an aircraft, wherein each nacelle of the first plurality of nacelles includes an electric motor coupled to a propulsor, wherein an outboard nacelle of the first plurality of nacelles includes an electrical energy storage system (ESS) coupled to a first electrical bus; and a second plurality of nacelles located on a second side of the aircraft, wherein each nacelle of the second plurality of nacelles includes an electric motor coupled to a propulsor, wherein an outboard nacelle of the second plurality of nacelles includes an ESS coupled to a second electrical bus.

公开(公告)号：US11073200B2

公开(公告)日：2021-07-27

申请号：US16293790

申请日：2019-03-06

Applicant: Rolls-Royce Corporation

Inventor： John R. Gebhard ,  Adam L. Kempers

IPC: F16H57/04 ,  F01D25/20

Abstract: A gearbox is provided for use in a gas turbine engine. The gearbox includes a plurality of gears, a casing surrounding the plurality of gears, and a lubricant re-circulation system. The casing defines a sump positioned beneath the plurality of gears to retain lubricant. The lubricant re-circulation system includes a re-circulation pump, a re-circulation inlet positioned within the sump, and a re-circulation outlet positioned to supply lubricant to the plurality of gears.

公开(公告)号：US20210222630A1

公开(公告)日：2021-07-22

申请号：US17061002

申请日：2020-10-01

Applicant: ROLLS-ROYCE plc ,  ROLLS-ROYCE CORPORATION ,  ROLLS-ROYCE DEUTSCHLAND LTD & CO KG

Inventor： Mark D. TAYLOR ,  Erik JANKE ,  Rory D. STIEGER ,  Daniel SWAIN

IPC: F02C7/36 ,  F02C3/10

Abstract: A turboshaft gas turbine engine comprises, in fluid flow series, a gas-generator compressor, a combustor, a gas-generator turbine, and a free power turbine. The gas-generator turbine is a single stage turbine having a specific work of from 200 to 350 kilojoules per kilogram, said specific work being the power output of the turbine per unit mass flow therethrough.

公开(公告)号：US20210222569A1

公开(公告)日：2021-07-22

申请号：US16745977

申请日：2020-01-17

Applicant: Rolls-Royce Corporation

Inventor： David J. Thomas ,  Jeffrey A. Walston ,  Aaron D. Sippel ,  Daniel K. Vetters

IPC: F01D5/22 ,  F01D25/24 ,  F01D11/08

Abstract: An assembly adapted for use in a gas turbine engine or other engine has a carrier component and a blade track segment. The assembly includes a mounting system for coupling the blade track segment to the carrier component. In an illustrative embodiment, the assembly is a turbine shroud segment for blocking gasses from passing over turbine blades included in the gas turbine engine.

公开(公告)号：US11053806B2

公开(公告)日：2021-07-06

申请号：US16661572

申请日：2019-10-23

Applicant: Rolls-Royce Corporation ,  Rolls-Royce North American Technologies, Inc. ,  Rolls-Royce plc

Inventor： Aaron D. Sippel ,  Daniel K. Vetters ,  Jun Shi ,  David J. Thomas ,  Andrew J. Eifert ,  Peter Broadhead

IPC: F01D9/04 ,  F01D9/02 ,  F01D25/24

Abstract: A blade track for a gas turbine engine includes segments and joints that couple the segments together. Each segment extends part-way around a central axis of the engine and the joints couple together adjacent segments to form a full hoop.

公开(公告)号：US20210188723A1

公开(公告)日：2021-06-24

申请号：US17119345

申请日：2020-12-11

Applicant: Rolls-Royce Corporation ,  Rolls-Royce High Temperature Composites, Inc.

Inventor： Robert Alexander Sean Golden ,  Sungbo Shim ,  Li Li ,  Taylor K. Blair

IPC: C04B41/52 ,  C04B35/80 ,  C04B41/00 ,  C04B41/45 ,  C04B41/50 ,  C04B41/87 ,  C04B41/89

Abstract: The disclosure describes braze tape coatings and technique to form articles with differing physical properties in different layers or regions of the article. An example method includes forming a braze tape defining at least one layer that includes a first segment and a second segment. A portion of the second segment in the plane is adjacent to a portion of the first segment in a plane of the layer. The method also includes positioning the braze tape on a surface of a substrate, the plane of the layer of the braze tape being parallel to the surface of the substrate. The method also includes heating the braze tape to melt a constituent of at least one of the first coating material and the second coating material to form a densified coating on the surface of the substrate.

公开(公告)号：US20210181009A1

公开(公告)日：2021-06-17

申请号：US16710606

申请日：2019-12-11

Applicant: Rolls-Royce Corporation

Inventor： John Gebhard ,  Adam Kempers ,  Jeremy Gallagher

IPC: G01F23/70 ,  F16N19/00

Abstract: A system and method for efficiently measuring the fluid level in a container having a non-uniform cross sectional area is described. The measuring device may be immersed in the fluid and have a float slidable along a structure having the capability to sense an aspect of the location of the float. Since the accuracy requirements in measuring the fluid level may be more important for the higher levels and the lower levels than the intermediate quantities, the sensor may likewise be configured to provide more accurate measurements near the upper and lower fill levels. The position of a float may be determined by capacitive optical or magnetic sensing techniques and the sensed position translated into engineering units for output by a calibration table.

公开(公告)号：US20210180675A1

公开(公告)日：2021-06-17

申请号：US16710855

申请日：2019-12-11

Applicant: Rolls-Royce Corporation

Inventor： Mark E. Bartolomeo

IPC: F16H55/14 ,  F16H55/17 ,  B33Y80/00 ,  B33Y70/00 ,  B33Y40/20 ,  C25D5/12 ,  C25D3/56 ,  C25D5/18 ,  C25D7/00

Abstract: A mechanical component that includes a core substrate and a nano-crystalline coating on at least a portion of the core substrate. The core substrate defines a resonance damping cavity. The resonance damping cavity is configured to damp a vibration in the component at a selected frequency.

公开(公告)号：US11035300B2

公开(公告)日：2021-06-15

申请号：US16370093

申请日：2019-03-29

Applicant: Rolls-Royce Corporation

Inventor： Alan W. Smith

IPC: F02N11/04 ,  H02P9/04 ,  F02C9/46 ,  H02K7/18 ,  H02P11/00 ,  H02P101/25

Abstract: An example system includes a gas-turbine configured to generate mechanical energy using fuel; an electrical generator configured to generate electrical energy using the mechanical energy generated by the gas-turbine; an electrical converter configured to process the electrical energy generated by the electrical generator; and a converter controller configured to reduce, responsive to detecting occurrence of a fault in the electrical generator or the electrical converter, an amount of fuel provided to the gas-turbine.

公开(公告)号：US11021779B2

公开(公告)日：2021-06-01

申请号：US15963212

申请日：2018-04-26

Applicant: Rolls-Royce High Temperature Composites Inc. ,  Rolls-Royce Corporation

Inventor： Chris Barrett ,  Steffan Brown

IPC: C22C47/08 ,  C22C47/06 ,  B32B5/26 ,  D03D11/00 ,  B32B1/00 ,  B32B5/02 ,  C04B35/622 ,  C23C16/04 ,  D03D25/00 ,  C04B35/80 ,  B22F5/04 ,  B22F5/00 ,  C04B41/51 ,  D03D15/68

Abstract: A ceramic matrix composite (CMC) is formed using a three-dimensional (3-D) woven preform by removing the set of sacrificial fibers from the 3-D woven preform and allowing a metal or metal alloy infiltrate the 3-D woven preform. The 3-D woven preform is formed by a method that includes providing a woven layer comprising a first set of ceramic fibers oriented in a first (x) direction woven with a second set of ceramic fibers oriented in a second (y) direction; stacking a plurality of woven layers on top of each other, said woven layers providing a two-dimensional (2-D) preform; weaving a set of sacrificial fibers in a third (z) direction with the 2-D preform, said weaving providing the 3-D woven preform; and shaping the 3-D woven preform into a predetermined shape.