Abstract
Wind tunnel and free-flight drop tests were made to obtain knowledge about aerodynamic characteristics of wind borne missiles, especially about the aerodynamic forces which cause missiles to be dispersed. Lift and drag coefficients, and tip speed ratios of autorotating square and rectangular prisms obtained by the wind tunnel tests are presented and compared with Iversen's equations for autorotating flat plates. From results of the drop tests, the effective lift coefficients of various shapes which determine the range of dispersion of falling bodies are calculated. They are compared with the lift coefficients of autorotating bodies obtained by previous experiments.
