Prediction Method of Motions of Hydrofoil Vessel

Abstract

To respond to the needs for high speed transportation, hydrofoil vessel, which is supported partially or totally by the foil lift, has been widely investigated. As few studies have been made on its motions, the authors have studied this problem theoretically and experimentally. As a result of this study, it is pointed out that unsteady characteristics of the hydrofoil have to be included in the hydrodynamic coefficents of the motion equatios for predicting the hydrofoil vessel's motions. It is also confirmed experimentally that the lifting line theory is useful to calculate the unsteady characteristics of the three dimensional hydrofoil under free surface.