Method of making a cellular core with internal septum

Details Method of making a cellular core with internal septum Method of making a cellular core with internal septum

B - Operations, Transporting

32

B

18/1002

B32B 3/12 (2006.01) B29C 33/52 (2006.01) B29C 67/00 (2006.01) G10K 11/172 (2006.01)

Patent

CA 1117267

A METHOD OF MAKING A CELLULAR CORE WITH INTERNAL SEPTUM Abstract of the Disclosure A method of making a panel for installation in the high velocity air flow region of an engine nacelle and other applications requiring sound absorbing material and increased air frame strength. The panel utilizes a single layer of either a metallic or nonmetallic cellular core with a solid or perforated septum disposed internally there- in. The septum may have a planar or nonplanar configuration within the individual cells of the core thereby providing means for reducing the noise level of various sound frequencies created by a jet engine or any other sound producing devices for that matter. The planar or nonplanar septum provides structural stabilization and/or vibration dampening to a bonded sandwich assembly. The panel may also be used in strengthening air frame construction and other applications besides sound attenuating panels.

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