Calculation of Shell Aerodynamic Coefficients with Rotational, Turbulent and Unsymmetrical Flow Solving

A number of aerodynamic characteristics such as the drag، magnus and pitching moment coefficients for the configuration of a 155 projectile (M-107 with maximum rotation rate of 870 radiant per second) is calculated by solving rotational، turbulent and full 3D flow in this paper. Calculation of above-mentioned coefficients is performed on several test cases according to different conditions of the main problem. Aerodynamic effect of a gap that is a consequent of designed disjoining mechanisms on the coefficient values for the disjoined projectile is also brought under consideration.