Patent ID: 6176454
Filing Date: 2001-01-23
Classification: B64C,Y02T

Abstract:
An apparatus for influencing the separation of a flow from a body having a surface and being immersed in the flow, by which a shear layer of the flow at the body immersed in the flow is excitable by means of periodic blowing and suction in order to act against a further separation of the shear layer from the body immersed in the flow; said apparatus comprising at least one cavity in the immersed body, wherein said at least one cavity communicates with several openings on the surface of the body in at least two areas directly behind each other with respect to the direction of flow and said at least one cavity being part of a passive cavity resonator, said cavity resonator being passively excited to create compressional vibrations by the flow and said compressional vibrations of said cavity resonator exciting the shear layer.