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11 条记录 (耗时 0.015 秒)

    Rotor blade assembly for bearingless rotor
    5.
    发明授权
    Rotor blade assembly for bearingless rotor 有权

    公开(公告)号：US11541995B2

    公开(公告)日：2023-01-03

    申请号：US16928605

    申请日：2020-07-14

    申请人： LOCKHEED MARTIN CORPORATION

    发明人： Eric S. Parsons

    IPC分类号： B64C27/48 ,  B64C27/33 ,  B64C27/82

    摘要： A structural member for use in a rotor system which rotates about a rotational axis includes a pin which extends substantially perpendicular to the rotational axis, a filler component positioned adjacent the pin, and a plurality of layers of composite material having fibers oriented lengthwise along a central axis which is perpendicular to the rotational axis. The plurality of fibers in the layers of composite material is wrapped about the pin and the filler component such that the fibers extend along the central axis and the plurality of layers form an opening filled by the filler component and which decreases as a function of distance from the pin along the central axis.

    COMMONLY MANUFACTURED ROTOR BLADE
    7.
    发明公开
    COMMONLY MANUFACTURED ROTOR BLADE 审中-公开

    公开(公告)号：US20240140600A1

    公开(公告)日：2024-05-02

    申请号：US18409652

    申请日：2024-01-10

    申请人： Lockheed Martin Corporation

    发明人： Joshua A. Breon ,  Eric S. Parsons ,  Timothy James Conti ,  Frank M. Caputo

    IPC分类号： B64C27/48

    CPC分类号： B64C27/48

    摘要： A rotor blade configured to be installed on a rotary wing aircraft includes a spar including an inboard portion extending from a root of the rotor blade to a first spanwise position of the rotor blade and an outboard portion meeting the inboard portion at the first spanwise position. The rotor blade further includes an upper skin and a lower skin coupled the outboard portion of the spar. The first spanwise position is defined by a most inboard point at which the upper and lower skins are coupled to the spar. The inboard portion includes a top layer, a bottom layer, and an inner cavity. The top layer has a substantially constant first thickness and the bottom layer has a substantially constant second thickness, and the distance between an outer surface of the top layer and an outer surface of the bottom layer is substantially constant.

    COMMONLY MANUFACTURED ROTOR BLADE
    8.
    发明公开
    COMMONLY MANUFACTURED ROTOR BLADE 审中-公开

    公开(公告)号：US20240043116A1

    公开(公告)日：2024-02-08

    申请号：US17881497

    申请日：2022-08-04

    申请人： LOCKHEED MARTIN CORPORATION

    发明人： Joshua A. Breon ,  Eric S. Parsons ,  Timothy James Conti ,  Frank M. Caputo

    IPC分类号： B64C27/48

    CPC分类号： B64C27/48

    摘要： A method of modifying a rotor blade is provided for a rotor blade including a spar having an inboard portion with a substantially constant overall height, the inboard portion further including a top layer having a substantially constant first thickness and a bottom layer having a substantially constant second thickness. The method includes removing a root portion of the inboard portion to thereby modify the rotor blade and installing a cuff configured to couple to the rotor blade to an aircraft.

    Commonly manufactured rotor blade
    10.
    发明授权
    Commonly manufactured rotor blade 有权

    公开(公告)号：US11919627B2

    公开(公告)日：2024-03-05

    申请号：US17881497

    申请日：2022-08-04

    申请人： LOCKHEED MARTIN CORPORATION

    发明人： Joshua A. Breon ,  Eric S. Parsons ,  Timothy James Conti ,  Frank M. Caputo

    IPC分类号： B64C27/48

    CPC分类号： B64C27/48

    摘要： A method of modifying a rotor blade is provided for a rotor blade including a spar having an inboard portion with a substantially constant overall height, the inboard portion further including a top layer having a substantially constant first thickness and a bottom layer having a substantially constant second thickness. The method includes removing a root portion of the inboard portion to thereby modify the rotor blade and installing a cuff configured to couple to the rotor blade to an aircraft.