Hydrodynamic Coefficients of the MK 13-2 Torpedo

Force measurement runs were made on a model MK 13-2 Torpedo to correct previously reported results for the discrepancies which were attributable to the interaction of pitching moment on the force measuring apparatus. The plain body, the body with fins, and the body with a shroud ring tail were tested at yaw angles of -10 degrees to +10 degrees. Drag-force coefficients, cross-force coefficients, and yawing moment coefficients were calculated and are presented in this report.