Honeycomb core with internal septum and method of making same

Details Honeycomb core with internal septum and method of making same Honeycomb core with internal septum and method of making same

1978-05-01

1981-05-05

Epstein, Henry F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Honeycomb-like

181292, 428131, 428593, B32B 312

Patent

active

042659558

ABSTRACT:
A sound attenuating panel for installation in the high velocity air flow region of an engine nacelle and/or other applications requiring sound absorbing material. The panel utilizing a single layer of either a metallic or nonmetallic cellular honeycomb core with a solid or perforated septum disposed internally therein. The septum may have a planar or non-planar 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 invention of the planar or non-planar septum provides structural stabilization and/or vibration dampening to a bonded sandwich assembly.

REFERENCES:
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patent: 2870857 (1959-01-01), Goldstein
patent: 3021565 (1962-02-01), Bowman
patent: 3053720 (1962-09-01), Edds
patent: 3064345 (1962-11-01), Herman et al.
patent: 3249659 (1966-05-01), Voelker
patent: 3734234 (1973-05-01), Wirt
patent: 3802145 (1974-04-01), Scanlon
patent: 3948346 (1976-04-01), Schindler
patent: 3983955 (1976-10-01), Vasiljevic
patent: 4001473 (1977-01-01), Cook
patent: 4084366 (1978-04-01), Saylor et al.
patent: 4118263 (1978-10-01), Cook, Jr.

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