A structural core and associated method of forming such structure is disclosed. The structure includes a single layer of at least two rows of hollow pyramid-like structures. The hollow pyramid-like structures dampen acoustic noise and provide a truss-like structure that provides a high level of stiffness against transverse loads, shear stresses and side-loading. The hollow pyramid-like structures preferably have upward facing and downward facing open bases, and are formed in rows and columns. To aid in sound attenuation, the single layer is formed from a partially porous material, a woven thermoplastic, woven carbon fiber, fiberglass and paper. To provide additional structural integrity, the single layer is formed from a solid non-porous material such as a metal. The structural core may be included within outer panels to form acoustical or structural panels.


    Access

    Download


    Export, share and cite



    Title :

    Pyramid waffle core structure and method of fabrication


    Contributors:
    TIEN ALLAN (author)

    Publication date :

    2016-03-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F02K JET-PROPULSION PLANTS , Strahltriebwerke / B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / E04B Allgemeine Baukonstruktionen , GENERAL BUILDING CONSTRUCTIONS / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES



    Space Shuttle shell structure waffle panel optimization

    YIN, DAH / RAUSCHER, MARK | AIAA | 1992


    TRAILING EDGE FLAP HAVING A WAFFLE GRID INTERIOR STRUCTURE

    WALKER STEVEN PAUL / MARTINEZ PERLAS G | European Patent Office | 2021

    Free access

    Structural synthesis of symmetric waffle plate

    Schmit, Lucien A. / Kicher, Thomas P. | TIBKAT | 1962


    TRAILING EDGE FLAP HAVING A WAFFLE GRID INTERIOR STRUCTURE

    WALKER STEVEN P / MARTINEZ PERLAS G | European Patent Office | 2021

    Free access

    Homogenization of a waffle membrane

    Andrianov, I.V. | Online Contents | 2003