Acoustics – Sound-modifying means – Muffler – fluid conducting type
Patent
1982-01-26
1984-05-22
Fuller, Benjamin R.
Acoustics
Sound-modifying means
Muffler, fluid conducting type
181286, 181292, 181294, 428116, E04B 182
Patent
active
044496079
ABSTRACT:
Soundproof lining for a gas pipe, in particular for a turbojet fan jet, of the type including a multiplicity of thin, perforated panels juxtaposed by tiling, as well as an intermediate layer between the wall of the pipe and each of said panels to delimit with said perforated panel a multiplicity of resonant acoustical cavities in which the acoustical vents consist of the ports in the perforated panel. According to the invention, in order to make the tubular vents, each perforated panel has a short, tubular sleeve at right angles to each port and located on its face opposite the wall of the pipe.
REFERENCES:
patent: 2830780 (1958-04-01), Schloss
patent: 3211253 (1965-10-01), Gonzalez
patent: 4170674 (1979-10-01), Matsuki
patent: 4235303 (1980-11-01), Dhoore et al.
patent: 4237176 (1980-12-01), Brueggemann et al.
Forestier Alexandre
Pluquet Alain A.
Rosa Roger A.
Tabet Mansour
Teysseyre Pierre M.
Fuller Benjamin R.
S.N.E.C.M.A.
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