Patent ID: 6394396
Filing Date: 2002-05-28
Classification: B64C,B64D,Y02T

Abstract:
In an aircraft including a source of a pressurized fluid and a wing arrangement, wherein said wing arrangement includes a wing body and a slat, said wing body terminates forwardly in a leading edge nose of said wing body, said slat has a concave rear surface facing toward said leading edge nose, and said slat is movably connected to said wing body to be movable between a retracted slat position in which said slat is adjacent to said leading edge nose with said concave rear surface facing and adjacent to said leading edge nose and an extended slat position in which said slat is spaced away from said leading edge nose with a slat air gap bounded between said slat and said leading edge nose,an improvement for reducing aero-acoustic noise generated by said wing arrangement, wherein said improvement comprises: a hollow displacement element that encloses at least one hollow space therein and that is arranged and secured on said concave rear surface extending along said slat, and a pressurized fluid line arrangement connecting said at least one hollow space to said source of a pressurized fluid.