Abstract: A new method is presented to calculate the exact analytic solution of potential flow about multi-element airfoils. The potential flow about multi-circles is calculated by the method of images, and multi-circles are transformed to multi-element airfoils by calculating the numerical solution of a partial differential system. This method can be applied to airfoils of arbitrary shape. Airfoils pressure distribution has been computed by this method and is in good agreement with independent results.

Key words: multi-element airfoils, laplace'equation, potential flow