VESSEL RUDDER AND VESSEL

• Main Authors: YAMAMOTO KOTAKU, IKEDA TAKEHIRO, SAWADA TOSHINORI, FUJITA SATOSHI, KIMURA KOYU
• Format: Patent
• Language: English; Japanese
• Published: 05.10.2017
• Subjects: MARINE PROPULSION OR STEERING; PERFORMING OPERATIONS; RELATED EQUIPMENT; SHIPS OR OTHER WATERBORNE VESSELS; TRANSPORTING

PROBLEM TO BE SOLVED: To provide a vessel rudder that is capable of increasing the lateral force of the rudder when a steering angle is taken while suppressing the increase of rudder resistance, and a vessel.SOLUTION: A rudder shape changing line La is provided to a side above the vicinity of a propeller center shaft Pc in the side view of a vessel rudder 10. Regarding a rudder sectional shape, blade sections are formed between a front edge 13 and a narrow start line Ls1 and between the front line 13 and a second narrow start line Ls2, a fist narrow part Rn1 in which a width equal to or less than 50% of a rudder maximum width Bra on the rudder shape changing line La is a maximum width is formed between a rear edge 11 and the narrow start line Ls1, and a second narrow part Rn2 in which a width equal to or less than 50% of a rudder maximum width Br at the height is a maximum width is formed between the rear edge 11 and the second narrow start line Ls2.SELECTED DRAWING: Figure 1 【課題】舵の抗力の増加を抑えつつ、舵角を取ったときに発生する舵の横力を増大させることができる船舶用舵及び船舶を提供する。【解決手段】当該船舶用舵１０の側面視で、プロペラ中心軸Ｐｃの近傍より上側に舵形状変化ラインＬａを設け、舵断面形状に関しては、前縁１３と第１狭小幅部開始ラインＬｓ１との間及び前縁１３と第２狭小幅部開始ラインＬｓ２との間を翼断面で形成して、後縁１１と第１狭小幅部開始ラインＬｓ１との間を、舵形状変化ラインＬａにおける舵の最大幅Ｂｒａの５０％以下の幅を最大幅とする第１狭小幅部Ｒｎ１として形成し、かつ、後縁１１と第２狭小幅部開始ラインＬｓ２との間を、その高さにおける舵の最大幅Ｂｒの５０％以下の幅を最大幅とする第２狭小幅部Ｒｎ２として形成する。【選択図】図１