Patent ID: 6505706
Filing Date: 2003-01-14
Classification: B64D,F02K,F05B,F05D,Y02T

Abstract:
A gas engine exhaust jet noise reduction device for a gas turbine engine having an exhaust end, the device comprising an exhaust flow guide adapted to be attached to the exhaust end, the exhaust flow guide having a piece of sheet metal curved to form a partial portion of a nozzle having curved leading and trailing edges, and side edges, the curved leading edge having a circumferential length greater than a circumferential length of the curved trailing edge, a distance from a central point of the curved leading edge to an imaginary straight line extending between two circumferentially opposed extremities of the curved leading edge being greater than one quarter of a diameter of an inner periphery of the exhaust end, thereby asymmetrically guiding an exhaust flow to change a jet noise directivity and reduce jet noise power level.