Nonplanar, subsonic, three-dimensional oscillatory piecewise continuous kernel function method

The rapid convergence characteristics and high accuracy of the three-dimensional piecewise continuous kernel function method are tested on a nonplanar configuration. The nature of the singularity of the three-dimensional kernel function for the nonplanar configuration is examined and anomalies associated with almost adjoining lifting surfaces are explained. Applications are made using the standard AGARD wing-tail configuration and the interference aerodynamic forces are compared with results obtained using other numerical methods.