公开(公告)号：US20210332714A1

公开(公告)日：2021-10-28

申请号：US16857988

申请日：2020-04-24

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

Inventor： Shaling H. Starr ,  Aaron D. Sippel ,  Ted J. Freeman ,  David J. Thomas

IPC: F01D11/08 ,  F01D25/24

Abstract: A turbine shroud assembly is adapted to extend around a turbine wheel mounted for rotation about a central reference axis of a gas turbine engine. The turbine shroud assembly includes a carrier segment made from metallic materials and a blade track segment made from ceramic matrix composite materials. The carrier extends at least partway about the axis. The blade track segment is supported by the carrier radially relative to the axis to define a portion of a gas path of the assembly.

公开(公告)号：US11149581B2

公开(公告)日：2021-10-19

申请号：US16692617

申请日：2019-11-22

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

Inventor： Michael J. Whittle ,  Anthony G. Razzell ,  Stephen I. Harris

IPC: F01D21/00 ,  F02C7/00

Abstract: A component for use in a gas turbine engine includes a component body, and a damage-indicative coating. The damage-indicative coating is configured to change from an intact state in which the damage-indicative coating has a first appearance to a damaged state in which the damage-indicative coating has a second appearance.

公开(公告)号：US11149567B2

公开(公告)日：2021-10-19

申请号：US16133187

申请日：2018-09-17

Applicant: Rolls-Royce Corporation ,  Rolls-Royce plc

Inventor： Michael J. Whittle ,  Daniel Kent Vetters ,  Eric Koenig

IPC: F01D9/04 ,  F01D5/28

Abstract: An airfoil assembly includes a roller joint formed between a ceramic airfoil portion and a carrier allowing sliding (rolling) radial movement therebetween to accommodate thermal growth disparity.

公开(公告)号：US20210301760A1

公开(公告)日：2021-09-30

申请号：US16836080

申请日：2020-03-31

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

Inventor： David L. Sutterfield ,  Todd S. Taylor ,  Jack D. Petty ,  Andrew Sanderson ,  Bryan H. Lerg

IPC: F02K1/34 ,  F02K1/70

Abstract: A propulsion unit includes a gas turbine engine arranged along an axis and an exhaust system coupled to the gas turbine engine. The gas turbine engine includes an engine core configured to discharge a core flow and a fan configured to be driven by the engine core to discharge a bypass flow. The exhaust system receives the mixed bypass and core flows from the gas turbine engine.

公开(公告)号：US11131214B2

公开(公告)日：2021-09-28

申请号：US16382923

申请日：2019-04-12

Applicant: Rolls-Royce Deutschland Ltd & Co KG ,  Rolls-Royce plc

Inventor： Stefan Menczykalski ,  Stephan Uhkoetter ,  John R. Mason ,  David A. Edwards ,  Neil Davies ,  Lynn Hammond ,  David Williams

IPC: F01D25/20 ,  F02C7/14 ,  F02C7/36 ,  F02C7/06

Abstract: A gas turbine engine includes a gearbox receiving input from a core shaft and driving a fan at a lower speed than the core shaft. First and second oil circuits fluidly couple with an inlet and outlet of the gearbox. A third oil circuit fluidly couples with an inlet and outlet of the gearbox. The outlet of the gearbox includes a device directing oil from the gearbox to the first oil circuit, to the second oil circuit and to the third oil circuit when feeding to the gearbox exceeds a predefined oil flow rate, or deviates an operational value corresponding with that oil flow rate, and directs oil from the gearbox to the third oil circuit when feeding to the gearbox is ≤ the predefined flow rate or is ≤ a corresponding operational value or is greater than or equal to a further corresponding operational value.

公开(公告)号：US11125111B2

公开(公告)日：2021-09-21

申请号：US16283085

申请日：2019-02-22

Applicant: ROLLS-ROYCE plc ,  Rolls-Royce Deutschland Ltd & Co KG

Inventor： John R Mason ,  Thomas Philip Astley

IPC: F01D25/20 ,  F16H57/04 ,  F01D21/14 ,  F02C7/36 ,  F02C7/06 ,  F01M1/18 ,  F01M1/02 ,  F01M1/12

Abstract: A method (500) and apparatus (50, 60) for lubrication of a gearbox (30) of an aircraft engine comprise provision (502) of oil to the gearbox (30) through a primary oil system (50) driven by a core (11) of the engine (10) in normal conditions; detection (504) of windmilling conditions and/or failure of the primary oil system (50); and in response to the detected condition or failure, activation (506) of an electric pump (61) of an auxiliary oil system (60), to provide oil to the gearbox (30).

公开(公告)号：US11105207B2

公开(公告)日：2021-08-31

申请号：US16539688

申请日：2019-08-13

Applicant: Rolls-Royce Deutschland Ltd & Co KG ,  Rolls-Royce plc

Inventor： Sven Schrape ,  Bernhard Mück ,  Jens Nipkau ,  Thomas Giersch ,  Frank Heinichen ,  John Dodds

IPC: F01D5/14

Abstract: A blade wheel of a turbomachine, which blade wheel has a multiplicity of blades which are suitable and provided for extending radially in a flow path of the turbomachine, wherein the blades form a blade entry angle and a blade exit angle. Provision is made whereby the blade wheel forms N blocks of blades, where N≥2, wherein the blades of a block have in each case the same blade entry angle and the same blade exit angle, and the blades of at least two mutually adjacent blocks have a different blade entry angle and/or a different blade exit angle. According to a further aspect of the invention, partial gaps that the blades form in relation to an adjacent flow path boundary are varied in mutually adjacent blocks.

公开(公告)号：US20210254489A1

公开(公告)日：2021-08-19

申请号：US17100388

申请日：2020-11-20

Applicant: ROLLS-ROYCE plc ,  ROLLS-ROYCE Corporation

Inventor： Simon J. Donovan ,  Peter E. Daum ,  Christopher P. Heason

IPC: F01D11/12 ,  B23K26/00 ,  B23K26/08 ,  B23K26/144 ,  B23K26/342 ,  B33Y10/00 ,  B33Y50/02 ,  C22C19/05 ,  B33Y80/00

Abstract: A method of forming a wall structure on a substrate comprises depositing, by additive-layer, powder-fed, laser-weld deposition apparatus, a plurality of material layers overlying one another on the substrate to form the wall structure. Each material layer of the plurality of material layers has (a) a layer thickness, measured in a direction locally perpendicular to a profile of the substrate, of no greater than about 350 μm and (b) a layer width, measured in a direction locally parallel to the profile of the substrate, of no greater than about 1200 μm.

公开(公告)号：US11092027B2

公开(公告)日：2021-08-17

申请号：US16688562

申请日：2019-11-19

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

Inventor： Ted J. Freeman ,  David J. Thomas ,  Jeffrey A. Walston ,  Aaron D. Sippel

IPC: F01D11/08 ,  F01D25/24

Abstract: A turbine shroud assembly for use with a gas turbine engine includes a carrier assembly coupled to a blade track segment, and a sheet-metal seal that seals on axial and radial facing surfaces therebetween. The blade track segment includes a shroud wall that extends circumferentially partway around an axis and an attachment feature that extends radially outward from the shroud wall. The carrier is coupled with the attachment feature to support the blade track segment.

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.