Frederick K. Goodwin

Analytical Prediction of Store Separation Characteristics from Subsonic Aircraft

This paper presents a predictive method valid up to the critical speed for determining the six degree-offreedom trajectories of stores released from single, TER, or MER configurations mounted on realistic aircraft. A computer program has been developed to calculate the aerodynamic forces and the trajectory. The paper also presents comparisons with data selected from an extensive wind-tunnel test program designed to test the theory through systematic measurements. Generally, the method predicts accurately the experimentally measured flowfields, store loadings, and six-degree-of-freedom trajectories.

Theoretical aerodynamics of one-lobed flexible parawings at low speeds

This paper presents a theoretical treatment of the problem of determining the shape and aerodynamic characteristics of a one-lobed flexible parawing. A general theory is developed utilizing slender-body theory and is then linearized. From this theory it is possible to obtain shapes and aerodynamic characteristics in nondimensional form as a function of only one variable. The results of calculations that have been made are presented in tabular form. An example of how these results can be applied to a specific parawing is presented.