| 摘要 |
PURPOSE:To reduce the cost and facilitate the inspection, maintenance, and check, by constituting a rudder for ship with two rudder plates having almost the same shape in parallel behind a propeller, a connecting member of these two rudder plates, and a rudder shaft fixed at the center between the rudder plates of this connecting member and rotating two rudder plates. CONSTITUTION:Two rudder plates 12-1, 12-2 provided in parallel at the preset distance behind a propeller 11 receive the back wash of the propeller 11, efficiently generate the lift, serve as a nozzle, and apply a large rudder force to a hull. Connecting members 13, 14 connect the rudder plates 12-1, 12-2 and fix them to a rudder shaft 15 and convey the torque of the rudder shaft 15 to two rudder plates 12-1, 12-2 to rotate them. The simple structure constituted of two rudder plates 12-1, 12-2, the connecting members 13, 14, and the rudder shaft 15 facilitates its production, and the inspection, maintenance, and chick can be performed simply.
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