UNIT CELL RESONATOR NETWORKS FOR GAS TURBINE COMBUSTOR TONE DAMPING

A noise attenuation panel (300) for a structure within a propulsion system includes a first plurality of unit cells (302); and a second plurality of unit cells, the second plurality of unit cells merged within the first plurality of unit cells (302), the first plurality of unit cells (302) including...

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Bibliographische Detailangaben
Hauptverfasser:	WINKLER, Julian, MENDOZA, Jeffrey Michael, REIMANN, Craig Aaron, HOMMA, Kenji
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS GAS-TURBINE PLANTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PHYSICS SOUND-PRODUCING DEVICES WEAPONS
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Beschreibung
Zusammenfassung:	A noise attenuation panel (300) for a structure within a propulsion system includes a first plurality of unit cells (302); and a second plurality of unit cells, the second plurality of unit cells merged within the first plurality of unit cells (302), the first plurality of unit cells (302) including a first periodic structure (351) having a first unit cell (231), a second unit cell (235), a third unit cell (241) and a fourth unit cell (243), each of the first unit cell (231), the second unit cell (235), the third unit cell (241) and the fourth unit cell (243) including a central body (222) interconnected via a plurality of lateral tubes extending from the central body (222), the first periodic structure (351) forming a first lateral layer of unit cells.