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    Turbine shroud assembly with inter-segment damping
    2.
    发明授权
    Turbine shroud assembly with inter-segment damping 有权

    公开(公告)号：US12215593B1

    公开(公告)日：2025-02-04

    申请号：US18678892

    申请日：2024-05-30

    Applicant: Rolls-Royce Corporation

    Inventor： David J. Thomas ,  Aaron D. Sippel ,  Ted J. Freeman ,  Clark J. Snyder

    IPC: F01D25/28 ,  F01D5/22 ,  F01D11/00

    Abstract: A turbine shroud assembly includes a first shroud segment, a second shroud segment, and a seal assembly. The first shroud segment includes a first carrier segment arranged circumferentially at least partway around a central axis and a first blade track segment supported by the first carrier segment. The second shroud segment is arranged circumferentially adjacent the first shroud segment about the central axis. The seal assembly is configured to block gases from escaping the gas path radially between the first shroud segment and the second shroud segment.

    PROGRAMMABLE DC POWER BUS OVER VOLTAGE PROTECTION
    3.
    发明申请
    PROGRAMMABLE DC POWER BUS OVER VOLTAGE PROTECTION 有权

    公开(公告)号：US20250038523A1

    公开(公告)日：2025-01-30

    申请号：US18358540

    申请日：2023-07-25

    Applicant: Rolls-Royce Corporation

    Inventor： Brian Joseph Huber

    IPC: H02H9/04 ,  B64D27/24

    Abstract: An example system includes a plurality of transient voltage suppressors (TVSs) that are connected in series across an electrical bus of an aircraft, the electrical bus having a high side and a low side; a plurality of switches, each switch of the plurality of switches configured to selectively shunt a corresponding TVS of the plurality of TVSs to the low side of the electrical bus; and a controller configured to: determine a desired voltage suppression level; and control operation of the plurality of switches such that the plurality of TVSs provides the desired voltage suppression level.

    MULTI-MODAL GAS-TURBINE STARTER AVAILABILITY
    4.
    发明申请
    MULTI-MODAL GAS-TURBINE STARTER AVAILABILITY 有权

    公开(公告)号：US20250035046A1

    公开(公告)日：2025-01-30

    申请号：US18361075

    申请日：2023-07-28

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

    Inventor： Jeffrey Lawrence ,  Peter Schenk ,  Jacob Ward Harral ,  Brian Joseph Huber

    IPC: F02C7/262 ,  F02C7/275

    Abstract: An example system includes a first gas-turbine engine configured to propel an aircraft, the first gas-turbine engine comprising: a first air-turbine starter, the first air-turbine starter configured to rotate a spool of the first gas-turbine engine; and a first electric starter, the first electric starter configured to rotate the spool of the first gas-turbine engine; and one or more controllers collectively configured to: cause, during a time period, the first-air turbine starter and the first electric starter to start the first gas-turbine engine while the aircraft is on the ground; measure, during the time period, values of one or more parameters of the first gas-turbine engine; and determine, based on the values of the one or more parameters, whether the first electric starter is available for use in performing mid-air restart of the first gas-turbine engine.

    Bladder cast slurry infiltration
    6.
    发明授权
    Bladder cast slurry infiltration 有权

    公开(公告)号：US12195403B2

    公开(公告)日：2025-01-14

    申请号：US17302958

    申请日：2021-05-17

    Applicant: Rolls-Royce Corporation

    Inventor： Jeffrey Crutchfield ,  Christopher Downie

    IPC: C04B41/45 ,  B28B1/52 ,  B28B7/00 ,  B28B7/06 ,  B28B7/32 ,  B28B7/38 ,  C04B35/80 ,  B28B3/00 ,  B28B7/34

    Abstract: A method of forming a bladder cast ceramic matrix composite (CMC) article including infiltrating a CMC substrate positioned in a cavity of a mold body with a slurry. The CMC substrate includes reinforcement material defining inner spaces. The slurry includes solid particles and a carrier material. During infiltration, the slurry at least partially fills at least a portion of the inner spaces of the CMC substrate. The method also includes inflating at least one bladder that is coupled to the mold body and disposed within the cavity such that a surface of the at least one bladder in an inflated configuration contacts at least one surface of the CMC substrate. The method also includes drying the slurry to remove at least a portion of the carrier material form an infiltrated CMC and deflating the at least one bladder.

    Dual-walled components for a gas turbine engine
    7.
    发明授权
    Dual-walled components for a gas turbine engine 有权

    公开(公告)号：US12194580B2

    公开(公告)日：2025-01-14

    申请号：US18148790

    申请日：2022-12-30

    Applicant: Rolls-Royce Corporation

    Inventor： Joseph Peter Henderkott ,  Robert Frederick Proctor

    IPC: F01D5/18 ,  B23P15/02 ,  B23P17/04 ,  B23P23/04 ,  F01D25/12

    Abstract: An assembly for a dual-walled component of a gas turbine engine and methods of forming and repairing a dual-walled component. The assembly includes a cold section part having an outer surface that defines a plurality of impingement apertures, a hot section part including a pre-sintered preform, the hot section part positioned over the outer surface of the cold section part, and a plurality of support structures including the pre-sintered preform, the plurality of support structures positioned between the hot section part and the cold section part, the plurality of support structures separating the hot section part from the cold section part to define at least one cooling channel therebetween.

    Blower system
    8.
    发明授权
    Blower system 有权

    公开(公告)号：US12172757B2

    公开(公告)日：2024-12-24

    申请号：US18155351

    申请日：2023-01-17

    Applicant: ROLLS-ROYCE plc ,  Rolls-Royce Corporation

    Inventor： Christopher A. Murray ,  Nicholas Howarth ,  Daniel Swain ,  Ian J. Bousfield

    IPC: B64D13/06 ,  F02C7/32 ,  F04D25/04 ,  F04D29/68

    Abstract: There is provided a blower system for providing air to an airframe system, comprising a rotor configured to be mechanically coupled to a spool 440 of a gas turbine engine, wherein the rotor is configured to: in a blower mode, be driven to rotate by the spool to discharge air to an airframe discharge port for supply to an airframe system; and, in an engine drive mode, receive air from an external air source via an impingement port that is configured to direct the received air onto the rotor and thereby drive the rotor to rotate to drive the spool to.

    ELECTRICAL ENERGY SYSTEM HAVING ACTIVE SEGMENTS FOR VARIABLE VOLTAGE GENERATION
    9.
    发明申请
    ELECTRICAL ENERGY SYSTEM HAVING ACTIVE SEGMENTS FOR VARIABLE VOLTAGE GENERATION 有权

    公开(公告)号：US20240380295A1

    公开(公告)日：2024-11-14

    申请号：US18314453

    申请日：2023-05-09

    Applicant: Rolls-Royce Corporation

    Inventor： David Russell Trawick ,  Mathew Gregory Hill

    IPC: H02K21/16 ,  H02K1/2789 ,  H02K7/12 ,  H02K7/18 ,  H02K7/20

    Abstract: An example electrical machine is described that includes active segments for variable voltage generation. The electrical machine includes a drive shaft, a fixed rotor segment, an active rotor segment, and an actuator mechanism. The fixed rotor segment is coupled to the drive shaft, where the fixed rotor segment has affixed thereon first permanent magnets of alternating polarity. The active rotor segment axially is adjacent to the fixed rotor segment along the drive shaft. The active rotor segment also has affixed thereon second permanent magnets of alternating polarity. The actuator mechanism is configured to articulate the active rotor segment relative to the fixed rotor segment and thereby alter a phase of the second permanent magnets relative to the first permanent magnets in order to change a first voltage generated by the electrical machine to a second voltage generated by the electrical machine.

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