Societe Nationale D'etude Et De Construction De Moteurs D'aviation

Hispano Suiza Aerostructures

Ateca

Bernard Louis Le Barazer

Patrick Gonidec

Osmin Regis Delverdier

Philippe Jean Vie

Eric Lecossais

Jacques Michel Julliard

Georges Jean Riou

A soundproofing panel comprises a honeycomb core sandwiched between a solid skin and a porous skin, the cells of the honeycomb being divided in the direction of its thickness into at least two resonant cavities by a least one partition which is traversed by passages interlinking the cavities. The partitions are formed by a plurality of hollow microbeads having porous walls, the microbeads being bonded to one another and to the walls of the honeycomb at their points of contact. Such a soundproofing panel combines high performance in terms of linearity as a function of the level of sound excitation, attenuation band, bulk and mechanical strength.

Soundproofing panel and method of producing said panel

Growing community of inventors

Le Havre, France

Bernard Louis Le Barazer