Honeycomb noise attenuating structures

Details Honeycomb noise attenuating structures Honeycomb noise attenuating structures

1982-01-11

1983-05-17

Epstein, Henry F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including aperture

55276, 181292, 428116, 428593, 428408, B32B 312

Patent

active

043840205

ABSTRACT:
Honeycomb noise attenuation sandwich panels and method of construction having a cellular core positioned between and bonded to two facing sheets. One facing sheet is perforated and the other imperforate. A thin sheet of porous fibrous felt or fabric is bonded to the perforated sheet. The core cells communicate with the atmosphere through the perforated sheet and the pores of the fibrous sheet.

REFERENCES:
patent: 3166149 (1965-01-01), Hulse et al.
patent: 3502171 (1970-03-01), Cowan
patent: 3690606 (1972-09-01), Pall
patent: 3693750 (1972-09-01), Takkunen
patent: 3713959 (1973-01-01), Rottmayer et al.

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