Study on Integrated Hydraulic Propulsion Vessel

A ship propulsion method, integrated hydraulic propulsion (IHP), was put forward and its characteristic was discussed. After that, dynamic mathematic model of IHP vessel was developed. Based on the model, dynamic response character of the system and the influences of four parameters (oil bulk modulus, rotary inertia, seawater density and oil temperature) upon the system were discussed. The simulation results show that IHP method is feasible. Oil bulk modulus and rotary inertia will influence the system dynamic behavior significantly. Seawater density and oil temperature will not only influence the dynamic behavior but also the steady state, so these parameters should be taken into account when an IHP system is to be designed. IHP method offers a new idea for ship design.