Abstract
An optimized stroke path for a flapping wing micro air vehicle in hover is studied. A flapping plate in quiescent flow is used as the basis for the study. The body is modeled as a thin two-dimensional flat plate and is represented as a collection of discrete vortices. Unsteady effects, including leading-edge separation, are captured by vortex shedding. Singleparameter studies suggest an angle of incidence of approximately 40 is optimal for simple flapping motion. A more complex figure-eight stroke path with a fixed translational stroke and a variable angle of incidence based on B-splines is imposed. Using three B-splines, an optimal solution for the angle of incedence as a function of stroke path is presented. Small changes in design variables can yield local maxima which can challenge traditional gradient-based optimization techniques.
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