上下端板付魚型断面舵に働く流体力に関する研究-Ⅱ．: テイル長と翼端幅の影響

摘要

瀬戸内海島嶋部における交通手段を考えると、島民（特に老人、社会人、学生）の生活に欠かせないものは渡船である。この渡船なしには島民の快適な生活を維持することはできない。%Recently the ship equipped with Schilling rudder is increase. Generally, the Schilling rudder is the fish-shape section with end-plates and provides high lift performance. The Schilling rudder shows higher handling performance than the normal one, especially in berthing controls. In the previous paper, it was confirmed through experiments that the Schilling rudder provides high-capacity lift. However, the mechanism bringing strong lift force even in large rudder angle is not entirely studied yet. To understanding the above mechanism will be useful for navigators, shipbuilders and marine engineers.rnIn this paper, to examine the above mentioned mechanism more practically, research the relation between hydrodynamic forces and the shape of rudder tail part of the fish-shape section was done through measurement experiments and numerical calculations. Especially, the influence of the shape of rudder tail part on characteristics of the high lift force of the rudder is explained by using the obtained results. From measured and calculated results, for example it is shown that the tail-edge thickness of the rudder obtaining the maximum lift force can be found out.