Abstract
A steering gear with rudder roll stabilization is an integrated device of the steering and rolling inhibiting of a ship. The rotary vane motor is an important part in the rudder roll stabilization system. The fluid flows as the tiller in the rotary vane motor rotates. Therefore, the clearance of the tiller is very important. In general, clearance depends on the designer’s know-how. In this research, the finite element method is used to define the clearance according to types of the tiller. Ram type and vane type tillers are selected for this research. Deformation and deformed shape of the tiller is checked by describing the situation analytically in which the tiller is assembled. By comparing the real clearance with the results of the analysis, the guideline to define the clearance of the tiller is suggested.
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