APPARATUS AND METHOD FOR DAMPENING ACOUSTICS

摘要

An apparatus (8) for dampening acoustic pressure oscillations of a gas flow contained in part by a combustor wall of a gas turbine engine combustor (14). The apparatus (8) includes at least one resonating tube (10) with a closed end, an open end (18), and a cavity therebetween. The cavity is in fluid communication with an interior of the combustor (14) such that the gas flow may flow into and out of the cavity. The apparatus (8) further includes a perforated plate (26) positioned at the open end (18) and including a plurality of apertures (28). The gas flow flowing into and out of the cavity travels through the apertures (28).