Hydrodynamic Derivative Calculation and Turning Performance Simulation of Amphibious Aircraft

Abstract To improve the rotation efficiency of amphibious aircraft on water surface, CFD technology is used to simulate maneuverable motion in this paper. The numerical calculations direct navigation, oblique towing, no drift angle rotating arm motion, navigation with rudder, and planar are carried out, respectively. hydrodynamic derivatives such as position derivative, coupling rudder added mass obtained. On basis, rotational performance predicted. results show that when fully deflected, radius 3159.1 m; engine differential run together, 1216.8 can effectively surface.