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    Minimization of chemical vapor infiltration tooling hole length through windows
    34.
    发明授权
    Minimization of chemical vapor infiltration tooling hole length through windows 有权

    公开(公告)号：US11993548B2

    公开(公告)日：2024-05-28

    申请号：US17957624

    申请日：2022-09-30

    Applicant: Raytheon Technologies Corporation

    Inventor： Alyson T. Burdette ,  Jon Erik Sobanski ,  Kenneth Petroski ,  Ying She ,  Kathryn S. Read

    IPC: B05D3/02 ,  C04B41/45

    CPC classification number: C04B41/457 ,  C04B41/4531 ,  C04B2235/614

    Abstract: A tooling assembly suitable for use in infiltrating a fibrous preform comprises an outer tooling fixture with a plurality of outer sidewalls defining an inner volume, each of the plurality of outer sidewalls having an outer wall thickness, and a window extending through the outer wall thickness of at least one outer sidewall of the plurality of sidewalls. The tooling assembly further comprises an inner tooling fixture positioned within the inner volume of the outer tooling fixture, the inner tooling having a plurality of inner sidewalls, each of the plurality of inner sidewalls having an inner wall thickness, and a plurality of holes extending through the inner wall thickness of at least one inner sidewall of the plurality of inner sidewalls. The at least one outer sidewall is positioned adjacent the at least one inner sidewall such that the window overlaps with at least a subset of the plurality of holes in the at least one inner sidewall.

    MINIMIZATION OF CHEMICAL VAPOR INFILTRATION TOOLING HOLE LENGTH THROUGH WINDOWS
    35.
    发明公开
    MINIMIZATION OF CHEMICAL VAPOR INFILTRATION TOOLING HOLE LENGTH THROUGH WINDOWS 审中-公开

    公开(公告)号：US20240109815A1

    公开(公告)日：2024-04-04

    申请号：US17957624

    申请日：2022-09-30

    Applicant: Raytheon Technologies Corporation

    Inventor： Alyson T. Burdette ,  Jon Erik Sobanski ,  Kenneth Petroski ,  Ying She ,  Kathryn S. Read

    IPC: C04B41/45

    CPC classification number: C04B41/457 ,  C04B41/4531 ,  C04B2235/614

    Abstract: A tooling assembly suitable for use in infiltrating a fibrous preform comprises an outer tooling fixture with a plurality of outer sidewalls defining an inner volume, each of the plurality of outer sidewalls having an outer wall thickness, and a window extending through the outer wall thickness of at least one outer sidewall of the plurality of sidewalls. The tooling assembly further comprises an inner tooling fixture positioned within the inner volume of the outer tooling fixture, the inner tooling having a plurality of inner sidewalls, each of the plurality of inner sidewalls having an inner wall thickness, and a plurality of holes extending through the inner wall thickness of at least one inner sidewall of the plurality of inner sidewalls. The at least one outer sidewall is positioned adjacent the at least one inner sidewall such that the window overlaps with at least a subset of the plurality of holes in the at least one inner sidewall.

    CMC LAMINATE AIRFOIL WITH PLY DROPS
    36.
    发明公开
    CMC LAMINATE AIRFOIL WITH PLY DROPS 审中-公开

    公开(公告)号：US20230383657A1

    公开(公告)日：2023-11-30

    申请号：US18319586

    申请日：2023-05-18

    Applicant: RAYTHEON TECHNOLOGIES CORPORATION

    Inventor： Russell Kim ,  Howard J. Liles ,  Kathryn S. Read

    IPC: F01D5/28 ,  F01D5/14

    CPC classification number: F01D5/282 ,  F01D5/284 ,  F01D5/147 ,  F05D2300/6033 ,  F05D2300/6012 ,  F05D2300/6034

    Abstract: An airfoil includes an airfoil section that has an airfoil wall that circumscribes an internal airfoil cavity and defines leading and trailing ends and pressure and suction sides. The airfoil wall is formed of a ceramic matrix composite (CMC) laminate comprised of fiber plies disposed in a ceramic matrix. The fiber plies include a skin fiber ply that defines an exterior of the airfoil section and at least one inner fiber ply that lines the skin fiber ply. At least one inner fiber ply locally terminates at one of the leading end or the trailing end such that the airfoil wall has fewer of the fiber plies in the leading end or the trailing end than in each of the pressure side and the suction side.

    CONTROLLED GRADIENT OF POROSITY IN CMC
    40.
    发明公开
    CONTROLLED GRADIENT OF POROSITY IN CMC 审中-公开

    公开(公告)号：US20230192561A1

    公开(公告)日：2023-06-22

    申请号：US18083766

    申请日：2022-12-19

    Applicant: Raytheon Technologies Corporation

    Inventor： Kathryn S. Read ,  Brendan M. Lenz

    IPC: C04B35/80 ,  C04B35/565 ,  C04B35/628 ,  C04B41/45 ,  C04B41/50 ,  C04B41/87

    CPC classification number: C04B35/80 ,  C04B35/565 ,  C04B35/62892 ,  C04B41/87 ,  C04B41/457 ,  C04B41/5025 ,  C04B2235/3826 ,  C04B2235/5256 ,  C04B2235/5436 ,  C04B2235/5472

    Abstract: A method for producing a ceramic matrix composite component is disclosed. The method includes providing a plurality of first ceramic fiber plies including a plurality of interconnected tows and a plurality of first pores positioned between adjacent tows. The method includes applying a plurality of first ceramic particles within the plurality of first pores. Next, the method includes applying a plurality of second ceramic fiber plies onto an outer surface of the plurality of first ceramic fiber plies. The second ceramic fiber plies include a plurality of interconnected tows and a plurality of second pores positioned between adjacent tows. The method then includes applying a plurality of second ceramic particles within the plurality of second pores. Further, the plurality of second ceramic particles are larger than the plurality of first ceramic particles. Lastly, the method includes densifying the ceramic matrix composite preform to form the ceramic matrix composite component.

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