Analytic Prediction of Surface Pressures over a Hemisphere-Cylinder at Incidence

The utility of the hemisphere cylinder conguration lends itself to widespread application, ranging from measurement probes to underwater vehicles. A simple explicit method to estimate the surface pressures over this configuration would be of use for both conceptual design and for understanding the relation of the design variables. Consequently, an explicit equation is developed that requires only the hemisphere cylinder incidence and the location of the point of interest to yield the final surface flow. Surface pressures are calculated using perturbation potentials calculated from least-square curve fits to numerically estimated potentials. Comparisonso f the expression with experimental data show good agreement.