| 摘要 |
PROBLEM TO BE SOLVED: To provide a high-lift twin rudder system for a marine vessel having high propulsion efficiency while maintaining excellent maneuvering performance and improving propulsion efficiency and safety even in a surge by suppressing the yawing, heaving and pitching of the vessel. SOLUTION: In this high-lift twin rudder system for the marine vessel with a pair of high-lift rudders 1, 2 arranged behind one pusher propeller 3, fins 18, 22 are provided on the inner board side faces of rudder blades 4, 5 and in the almost same level position as the shaft of the pusher propeller. The fin 18 of one rudder blade 4 opposed to the board side where pusher propeller blades are rotated in an ascending direction has an attitude of forming a prescribed angle of attack, and an end face 20 of the fin 18 is provided with an end plate 21. The fin 22 of the other rudder blade 5 opposed to the board side where the pusher propeller blades are rotated in a descending direction has an attitude of forming another prescribed angle of attack, and an end face 24 of the fin 22 is provided with an end plate 25.
|
