Edge vortex scatter plate for blade tips of aerodynamic and hydrodynamic wings and control surfaces

摘要

The device is intended for aircraft, windmills and ship control surfaces in order to prevent the creation of edge vortices at the blade tips, and consists of a thin, rigid plate (2) which is fastened to the blade tip (1) at right angles to the blade longitudinal direction and parallel to the predominant flow direction. The blade is provided with slot-like holes (3) which are used to relieve the stress of pressure differences and run at right angles to the flow, the holes close to the blade skin being narrower in order that the lift is maintained and broader close to the plate edge in order that the pressure difference is completely compensated for as far as the plate edge. In addition, the rear edge (4) of the plate (2) is broad and is cut off at right angles to the flow, so that the scattered rotating flow components are controlled such that they diverge. IMAGE