Structure with serrations adapted to traverse a fluid environment

Abstract

There is provided an airfoil with a plurality of alternating projections and troughs along its trailing edge designed to traverse a fluid medium. The airfoil described uses the plurality of projections and troughs to negate noise, which is a function of wind speed and chord length. In an alternate variation, instead of, or in addition to negating noise, the plurality of projections and troughs instead are adapted to produce or modify noise such that it is generated in a desired frequency band. In this variation, the plurality of projections and troughs are structured such that the generated noise is in the desired frequency band that is based at least on a frequency band that is repulsive to various types of animals given a designated local wind speed. In another variation, the plurality of projections and troughs instead are adapted to improve the aerodynamic performance of the airfoil, either taken alone, or in the context of multiple airfoils working together within a system.

Dependencies are inferred from the claim text.