An acoustic panel with a cellular core includes cells that are provided with one or more obstacles, each of the obstacles extending transversely in relation to the main axis of the associated cell so as to increase the length of the path (F) that sound waves travel through the cell. Methods enabling the production of such a panel implements steps of cutting, folding and bonding that are suitable for creating cells provided with such obstacles.
PANNEAU ACOUSTIQUE POUR NACELLE D'ENSEMBLE PROPULSIF D'AÉRONEF, ET PROCÉDÉS DE FABRICATION S'Y RAPPORTANT
ACOUSTIC PANEL FOR AIRCRAFT PROPULSION UNIT NACELLE, AND RELATED PRODUCTION METHODS
AKUSTIKPLATTE FÜR GONDEL EINER FLUGZEUGANTRIEBSEINHEIT UND ZUGEHÖRIGE HERSTELLUNGSVERFAHREN
2020-07-08
Patent
Electronic Resource
French
IPC: | G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES / 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 / B64C AEROPLANES , Flugzeuge |
European Patent Office | 2020
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