Acoustic panel for sound insulating linings of gas ducts

Details Acoustic panel for sound insulating linings of gas ducts Acoustic panel for sound insulating linings of gas ducts

1988-04-04

1989-08-22

Fuller, B. R.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181214, 181224, 181286, B64D 3300, E04B 182

Patent

active

048587214

ABSTRACT:
A sound insulating lining for a gas flow path, particularly the bypass flow ath in a jet engine, is made up of a succession of acoustic panels including a perforated skin bonded to a stiffening frame, and a cellular structure formed by a ribbed skin clamped with prestressing via of resilient tongues to transverse struts of the stiffening frame so that the ribs engage the perforated skin to form resonant acoustic cavities. The panels forming the lining are screwed to the casing constituting the wall of the flow path to be insulated.

REFERENCES:
patent: 4258823 (1981-03-01), Ganz et al.
patent: 4433751 (1984-02-01), Bonneau
patent: 4449607 (1984-05-01), Forestier et al.
patent: 4452335 (1984-06-01), Mathews et al.
patent: 4751979 (1988-06-01), Wiseman

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