Patent ID: 8511096
Filing Date: 2013-08-20
Classification: F02C,F02K,Y02T

Abstract:
1. A muffling device, comprising: a muffling device body comprising an inlet arranged to direct a flow of a compressible fluid into an interior of the muffling device body; a first orifice plate arranged to receive the at least some of the flow of the compressible fluid from the interior of the muffling device body, the first orifice plate comprising at least one orifice extending through a wall; and a second orifice plate arranged to receive the at least some of the flow of the compressible fluid from the interior of the muffling device body, the second orifice plate comprising at least one orifice extending through a wall; wherein the first orifice plate and the second orifice plate at least partially define a plenum arranged to receive the flow of the compressible fluid from the interior of the muffling device body via the at least one orifice of the first orifice plate and via the at least one orifice of the second orifice plate; wherein the first orifice plate and the second orifice plate are fluidicly opposed such that the flow of the compressible fluid through the at least one orifice of the first orifice plate from the interior of the muffling device body into the plenum is directed at the wall of the second orifice plate and such that flow of the compressible fluid through the at least one orifice of the second orifice plate from the interior of the muffling device body into the plenum is directed at the wall of the first orifice plate; wherein the inlet is fluidicly coupled to a bleed system associated with a gas turbine engine; and wherein the plenum is arranged to discharge into a fan flow stream of the gas turbine engine.