高速飛翔船の離水時の運動に関する研究

抄録

In the high speed marine transportation age, various kinds of transportation systems are proposed. As a ship speed becomes higher, it is important to reduce the wave making and viscous resistance particularly. One method is that ship body is put up in the air by the foil and the propulsion system is set up under the water. As this system has an instabiliity of motion in the takeoff condition, an investigation is necessary on how to take off. Considering these tendencies, the jet engine system which is for the aircaft and has a high reliability is proposed as the propulsion system in this paper. This idea is based on the following three reasons. 1. trouble avoidance by putting up the propulsion system in the air 2. high reliability of a jet engine and simplicity of a maintenance by putting up it in the air 3. motionless in waves When this system is studied, it is important for the motion in the takeoff to know the behaviors of thrust, resistance and the attack angle of the foil etc. at each instance, and also to think of the foil control, which foil does not stall and the ship body can rise up smoothly. The purpose of the paper is to solve the equations of motion in the takeoff condition, to investigate the effect of various parameters with the simulation and to get the useful data at the initial design stage.