Aerodynamic noise of a two-dimensional wing with high-lift devices

摘要

This paper concerns the experimental characterization of the aerodynamic noise of a 2D 1/11 scale wing, supplied with a leading-edge slat and a trailing-edge flap. ^Three configurations are depicted: takeoff, cruise, and landing. ^The experimental results are analyzed for the noisiest configuration, i.e., landing. ^Two noise sources, localized in the slat-wing slot and the wing-flap slot, are displayed. ^Sound is preferentially radiated from the wing pressure side. ^Moreover radiation from the wing-flap slot and from the flap trailing-edge are shown to interfere in the far field. ^An attempt is made to represent the wingflap noise radiation with the help of existing analytical theories. ^(Author)