Modeling and simulation of air cushion vehicle 6-DOF maneuverability

Due to the movement complexity of air cushion vehicle, so far the research has been focused on 4DOF motion, but the 4-DOF motion equation is difficult to reflect the real movement characteristics of air cushion vehicle. In this paper, the water surface deformation under air cushion was obtained on the basis of linear wave theory, the lift fan - air duct- skirt – air cushion dynamic balancing cushion system was obtained according to the flow balance principle, at last, the 6-DOF motion model was established according to Newton’s momentum and moment of momentum theorem, and the results of movement simulation was obtained. The simulation results show that the motion model is rational, The motion model has been successfully applied to a certain type of steering simulator.