Pressure measuring device for a scale model for elastic similar structure of a wing in a large plane

    公开(公告)号:US11691763B2

    公开(公告)日:2023-07-04

    申请号:US17061395

    申请日:2020-10-01

    CPC classification number: B64F5/60 B64C3/26 G06F30/10 B33Y80/00

    Abstract: A pressure measuring device for a scale model for elastic similar structure of a wing in a large transport plane adopts a bracket for pressure measuring steel pipes formed by 3D printing, shapes of an upper surface and an lower surface of the bracket are completely the same as local airfoile profiles of a skin at required pressure measuring positions, and the upper surface and the lower surface of the bracket are bonded to the skin and wing beams; a pressure measuring hose is connected with the pressure measuring steel pipe, and the pressure measuring steel pipe is embedded into the bracket and fixed to it; the upper surface and the lower surface of the bracket are provided with semi-cylindrical convex structures; and the pressure measuring steel pipe extends out of the pressure measuring hole in the surface of the skin for pressure measuring steel pipe in the bracket.

    Zero-Poisson-Ratio Honeycomb Structure And Interlocking Assembly Manufacturing Method Thereof

    公开(公告)号:US20220339892A1

    公开(公告)日:2022-10-27

    申请号:US17703468

    申请日:2022-03-24

    Abstract: A zero-Poisson-ratio honeycomb structure and an interlocking assembly manufacturing method thereof are provided, and belong to the field of light structure design and manufacturing. The honeycomb structure is formed by combining a four-pointed star shaped structure and horizontal and vertical honeycomb wall arrays at star corners. The zero-Poisson-ratio honeycomb structure not only has the zero-Poisson-ratio characteristic, but also can achieve respective design of in-plane and out-of-plane mechanical properties. Meanwhile, due to the existence of the horizontal honeycomb walls and the vertical honeycomb walls, the connection of multiple honeycomb walls at angular points in the honeycomb structure is avoided. Moreover, a novel manufacturing mode is provided for the honeycomb structure in addition to prepare the honeycomb structure by utilizing a 3D printing process. The honeycomb structure can be manufactured by combining an interlocking assembly process with resin matrix composites. The performance of the honeycomb structure is further improved at the material level.

    Wing model for static aeroelasticity wind tunnel test

    公开(公告)号:US11808667B2

    公开(公告)日:2023-11-07

    申请号:US17532305

    申请日:2021-11-22

    CPC classification number: G01M9/08

    Abstract: A wing model for static aeroelasticity wind tunnel test belongs to the technical field of aeroelasticity tests. In the wing model, the model steel joint and the spar frame are connected with the composite material skin. The piezometer wing ribs are arranged among the spar frame and the plurality of supporting wing ribs. The embedded piezometer tubes are arranged in the piezometer wing ribs, the lightweight filling foam is arranged among the spar frame and the plurality of supporting wing ribs. An outer surface of a frame segment formed by the lightweight filling foam, the plurality of supporting wing ribs, the piezometer wing ribs and the spar frame is covered with the composite material skin. The frame segment is assembled on the model steel joint to form the wing model for the static aeroelasticity wind tunnel test.

    Zero-Poisson-ratio honeycomb structure and interlocking assembly manufacturing method thereof

    公开(公告)号:US11707895B2

    公开(公告)日:2023-07-25

    申请号:US17703468

    申请日:2022-03-24

    CPC classification number: B29C70/46 B29C33/3835 B29C70/545 B29L2031/608

    Abstract: A zero-Poisson-ratio honeycomb structure and an interlocking assembly manufacturing method thereof are provided. The honeycomb structure is formed by combining a four-pointed star shaped structure and horizontal and vertical honeycomb wall arrays at star corners. The zero-Poisson-ratio honeycomb structure not only has the zero-Poisson-ratio characteristic, but also can achieve respective design of in-plane and out-of-plane mechanical properties. Meanwhile, due to the existence of the horizontal honeycomb walls and the vertical honeycomb walls, the connection of multiple honeycomb walls at angular points in the honeycomb structure is avoided. Moreover, a novel manufacturing mode is provided for the honeycomb structure in addition to prepare the honeycomb structure by utilizing a 3D printing process. The honeycomb structure can be manufactured by combining an interlocking assembly process with resin matrix composites. The performance of the honeycomb structure is further improved at the material level.

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