Drive shaft with ballistic tolerance

    公开(公告)号:US12258122B2

    公开(公告)日:2025-03-25

    申请号:US17367085

    申请日:2021-07-02

    Abstract: An aircraft drive shaft that includes an outer shaft with a first diameter that is configured to couple a first gearbox and a second gearbox to provide power transfer between the two gearboxes. An inner shaft that is concentric with the outer shaft and has a second diameter that is configured to provide structural support to the outer shaft. A gap is located between an outer peripheral surface of the inner shaft and an inner peripheral surface of the outer shaft. The gap has a size from the outer peripheral surface to the inner peripheral surface that is at least as large as a largest ballistic projectile cross-section size that the aircraft is expected to encounter on an upcoming mission. A sleeve is located at least at a first end of the outer shaft and connects the outer shaft to the inner shaft.

    COMPOSITE DRIVE SHAFTS
    43.
    发明申请

    公开(公告)号:US20250067301A1

    公开(公告)日:2025-02-27

    申请号:US18238451

    申请日:2023-08-25

    Abstract: In accordance with at least one aspect of this disclosure, a composite shaft comprises a plurality of composite elements arranged about an axis to form a hollow cylindrical shaft extending along the axis between a first end of the shaft and a second end of the shaft. The plurality of composite elements incudes: a first group of the composite elements aligned parallel to the axis, a second group of the composite elements arranged about the axis offset by an angle α relative to the first group in a first direction, a third group of the composite elements arranged about the axis offset by an angle γ relative to the first group in a second direction opposite the first direction, wherein the third group is offset from the second group by an angle 2α, and a fourth group of the composite elements arranged about the axis offset by an angle θ.

    Composite frames for opto-mechanical support structures

    公开(公告)号:US12181098B2

    公开(公告)日:2024-12-31

    申请号:US17679489

    申请日:2022-02-24

    Abstract: A frame for an opto-mechanical support structure includes an interconnected lattice of frame composite rods defined about an interior space with interstices defined between the frame composite rods. A method of making an opto-mechanical frame includes forming a frame of interconnected lattice of frame composite rods using one or more Automated Fiber Placement (AFP) around a mandrel. The method includes removing the mandrel from an interior space of the frame after forming the frame.

    FLEXIBLE METALLIC COUPLING FOR DRIVE SHAFTS MADE BY ADDITIVE MANUFACTURING

    公开(公告)号:US20240328464A1

    公开(公告)日:2024-10-03

    申请号:US18190666

    申请日:2023-03-27

    CPC classification number: F16D3/56

    Abstract: A metallic coupling for a drive shaft includes a first cylindrical flange extending axially along a center axis and a second cylindrical flange extending axially along the center axis and spaced axially from the first cylindrical flange. The metallic coupling also includes a first plurality and a second plurality of connectors. Each connector of the first plurality of connectors extends from the first cylindrical flange to the second cylindrical flange and are spaced circumferentially apart from each other about the center axis. Each connector of the second plurality of connectors also extends from the first cylindrical flange to the second cylindrical flange and are spaced circumferentially apart from each other about the center axis. The second plurality of connectors are radially inward from the first plurality of connectors relative to the center axis. An annular gap is radially between the first plurality of connectors and the second plurality of connectors.

    FLEXIBLE METALLIC COUPLINGS FOR DRIVE SHAFTS
    46.
    发明公开

    公开(公告)号:US20240240675A1

    公开(公告)日:2024-07-18

    申请号:US18096900

    申请日:2023-01-13

    CPC classification number: F16D3/10 F16D3/06 F16D2250/00

    Abstract: A flexible coupling includes a first flange and a second flange, wherein in a relaxed state the first flange and the second flange are each aligned along a longitudinal axis. A plurality of first coupling members extends from the first flange. Each first coupling member includes a first and second driving beam meeting at a first node to form a topologically triangular truss. A plurality of second coupling members extend from the second flange. Each second coupling member includes a first and second driven beam extending from the second flange and meeting at a second node to form a topologically triangular truss. The first node of each of the first coupling members is connected to the second node of a respective one of the second coupling members.

    DESIGN AND CHARACTERIZATION METHOD OF WELDED JOINTS FOR THERMOPLASTIC COMPONENTS

    公开(公告)号:US20230382059A1

    公开(公告)日:2023-11-30

    申请号:US17752161

    申请日:2022-05-24

    Abstract: The present disclosure provides assemblies, systems and characterization methods of welded joints for thermoplastic components. More particularly, the present disclosure provides assemblies, systems and characterization methods of welded joints for thermoplastic components (e.g., thermoplastic-based fiber-reinforced composites) utilizing visualization agents (e.g., pigments and/or fluorescent agents). The present disclosure provides for assemblies, systems and characterization methods of welded joints for thermoplastic components and/or thermoplastic-based composites with enhanced visualization, sufficient for qualitative and quantitative assessment of the welded interconnected areas.

    COMPOSITE STRUCTURES
    49.
    发明申请

    公开(公告)号:US20230111679A1

    公开(公告)日:2023-04-13

    申请号:US17484985

    申请日:2021-09-24

    Abstract: In accordance with at least one aspect of this disclosure, a composite structure can be formed of or including a plurality of composite strips. The plurality of composite strips include one or more filler strips which can have at least one filler edge having a filler edge geometry between a first surface and second surface, the second surface being opposite the first surface. The filler edge geometry can be configured to prevent formation of one or more gaps between one or more adjacent composite strips.

    DRIVE SHAFTS
    50.
    发明申请

    公开(公告)号:US20230095420A1

    公开(公告)日:2023-03-30

    申请号:US17484793

    申请日:2021-09-24

    Abstract: In accordance with at least one aspect of this disclosure, a drive shaft includes, a first tube body having one or more first body channels defined through a wall thickness thereof, the one or more channels configured to increase bending and/or axial flexibility of the first tube body while only allowing for a less than proportional reduction in torsional stiffness of the first tube body. A second tube body can be concentrically disposed relative to the first tube body and connected to the first tube body at a first end portion and a second end portion. The second tube body can include one or more second body channels defined through a wall thickness thereof, the one or more channels configured to increase bending and/or axial flexibility of the second tube body while only allowing for a less than proportional reduction in torsional stiffness of the second tube body.

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