Extended reaction acoustic liner for jet engines and the like

Details Extended reaction acoustic liner for jet engines and the like Extended reaction acoustic liner for jet engines and the like

1999-04-23

2000-10-24

Dang, Khanh

Acoustics

Sound-modifying means

Sound absorbing panels

181213, E04B 182

Patent

active

061352381

ABSTRACT:
An extended reaction acoustic liner for use in jet engine noise mitigation has a substantially non-porous outer layer, a honeycomb core disposed in laminar juxtaposition to the outer layer, and a porous inner layer in laminar juxtaposition to the honeycomb core such that the honeycomb core is sandwiched between the outer layer and the inner layer. The honeycomb core comprises a plurality of cell walls defining a plurality of cells. Some of the cells are in fluid communication with one another via the openings formed in the cell walls. The openings in the cell walls cause viscous acoustic losses, resulting in acoustic energy dissipation and enhanced noise attenuation.

REFERENCES:
patent: 3085740 (1963-04-01), Wagner
patent: 3161377 (1964-12-01), Balluff
patent: 3261576 (1966-07-01), Valyi
patent: 3584812 (1971-06-01), Brenman et al.
patent: 3604661 (1971-09-01), Mayer, Jr.
patent: 3769767 (1973-11-01), Scott
patent: 3820628 (1974-06-01), Hanson
patent: 3821999 (1974-07-01), Guess et al.
patent: 3887031 (1975-06-01), Wirt
patent: 3895152 (1975-07-01), Carlson et al.
patent: 3910374 (1975-10-01), Holehouse
patent: 3948346 (1976-04-01), Schindler
patent: 4001473 (1977-01-01), Cook
patent: 4035535 (1977-07-01), Taylor
patent: 4465725 (1984-08-01), Riel
patent: 4539244 (1985-09-01), Beggs et al.
patent: 4539245 (1985-09-01), Sarin et al.
patent: 4671841 (1987-06-01), Stephens
patent: 4749150 (1988-06-01), Rose et al.
patent: 4749151 (1988-06-01), Ball et al.
patent: 4759513 (1988-07-01), Birbragher
patent: 4850093 (1989-07-01), Parente
patent: 4947958 (1990-08-01), Snyder
patent: 4989807 (1991-02-01), Foreman et al.
patent: 4993663 (1991-02-01), Lahte et al.
patent: 5000998 (1991-03-01), Bendig et al.
patent: 5041323 (1991-08-01), Rose et al.
patent: 5114102 (1992-05-01), Wang
patent: 5136837 (1992-08-01), Davison
patent: 5137230 (1992-08-01), Coffinberry
patent: 5141182 (1992-08-01), Coffinberry
patent: 5180619 (1993-01-01), Landi et al.
patent: 5192623 (1993-03-01), Gewelber
patent: 5222698 (1993-06-01), Nelson et al.
patent: 5297765 (1994-03-01), Hughes et al.
patent: 5368258 (1994-11-01), Johnson et al.
patent: 5447283 (1995-09-01), Tindell
patent: 5490602 (1996-02-01), Wilson et al.
patent: 5543198 (1996-08-01), Wilson
patent: 5618363 (1997-04-01), Mullender et al.
patent: 5743488 (1998-04-01), Rolston et al.

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