Noise attenuation panel

Details Noise attenuation panel Noise attenuation panel

E - Fixed Constructions

04

B

E04B 1/82 (2006.01) B32B 3/12 (2006.01) B32B 5/16 (2006.01) B32B 5/18 (2006.01) E04C 2/36 (2006.01) G10K 11/16 (2006.01) G10K 11/172 (2006.01)

Patent

CA 2092411

2092411 9212855 PCTABS00014 A noise attenuation panel (10) for an aero engine environment comprises a first cellular component part (121) which has wall portions which extend from the front face to the rear face and which provide bounding surfaces for an array of cells (15) and a second cellular component part (122) in the form of an open-celled structure having a multiplicity of intercommunicating cells obtained by aggregation of particulate material or by the displacement of material by a dispersion or like technique. A backing component part (11) is secured to the rear face of the second cellular component part (121), the front face of which is secured to the rear face of the first cellular component part and a facing component part (14) is secured to the front face of the first cellular component part. In an alternative form, the positions of the cellular component parts (121, 122) are interchanged.

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