A cellular sound insulation structure and associated aircraft, a cell of which is provided with a diaphragm which includes a membrane having at least one orifice passing through a thickness of the membrane, and at least one tube surmounting the orifice and extending from a face of the membrane into one compartment of the cell, the tube comprising a free end, forming an acoustic outlet, which is positioned at a distance (p) from the base cross section of the cell. Also, a method for manufacturing such a cellular sound insulation structure, as well as to a tool for inserting a diaphragm into a cell. Such a cellular structure makes it possible to treat a wider acoustic frequency spectrum, and its acoustic dimensioning as well as its manufacture are simplified.
STRUCTURE ALVÉOLAIRE D'INSONORISATION INCLUANT UN DIAPHRAGME MUNI D'UN TUBE CONFIGURÉ POUR TRAITER DIFFÉRENTES FRÉQUENCES ACOUSTIQUES, PROCÉDÉ DE FABRICATION D'UNE TELLE STRUCTURE ALVÉOLAIRE D'INSONORISATION, ET OUTIL ASSOCIÉ
HONEYCOMB SOUNDPROOFING STRUCTURE INCLUDING A DIAPHRAGM PROVIDED WITH A TUBE CONFIGURED TO PROCESS DIFFERENT ACOUSTIC FREQUENCIES, METHOD FOR MANUFACTURING SUCH A HONEYCOMB SOUNDPROOFING STRUCTURE, AND ASSOCIATED TOOL
SCHALLDÄMMENDE WABENSTRUKTUR MIT EINER MEMBRAN, DIE MIT EINEM ROHR VERSEHEN IST, DAS FÜR DIE VERARBEITUNG VERSCHIEDENER AKUSTISCHER FREQUENZEN KONFIGURIERT IST, VERFAHREN ZUR HERSTELLUNG EINER SOLCHEN SCHALLDÄMMENDEN WABENSTRUKTUR UND ENTSPRECHENDES WERKZEUG
2023-12-06
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 / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / F02K JET-PROPULSION PLANTS , Strahltriebwerke |
European Patent Office | 2022
|European Patent Office | 2021
|European Patent Office | 2021
|Pièce d’insonorisation de véhicule automobile et procédé de fabrication associé
European Patent Office | 2023
|