| 摘要 |
<p num="1">A device for reducing the aerodynamically induced noise at the side edge (12) of a regulating flap (11), in particular a high-lift flap of an aircraft, is described, wherein a device which reduces the aerodynamically induced noise and influences the flap turbulence is provided on the side edge (12) of the regulating flap (11). According to the invention, the device influencing the flap turbulence comprises surface parts (13), which extend in the wing span direction, of the regulating flap (11), with one or more air passages which are located between the surface parts and through which the air flowing past the regulating flap (11) flows. According to another embodiment of the invention, the device influencing the flap turbulence can comprise a large number of elongate elements which extend in the wing span direction and form a brush-like arrangement which extends essentially over the entire profile depth of the regulating flap. According to yet another embodiment of the invention, the device influencing the flap turbulence can comprise at least one channel which opens on the side edge of the regulating flap and through which compressed air can be blown into the noise-generating turbulence.
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