JP7149660B1 - ship rudder - Google Patents

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JP7149660B1
JP7149660B1 JP2021177640A JP2021177640A JP7149660B1 JP 7149660 B1 JP7149660 B1 JP 7149660B1 JP 2021177640 A JP2021177640 A JP 2021177640A JP 2021177640 A JP2021177640 A JP 2021177640A JP 7149660 B1 JP7149660 B1 JP 7149660B1
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rudder
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leading edge
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満晴 伊藤
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株式会社 Asc
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract

【課題】船舶の燃費を良くすることを可能とする船舶舵を提供することである。【解決手段】船舶舵１０は、推進用プロペラ５の後方に位置するように設けられた船舶舵１０であって、船舶１の進行方向の前縁を丸く厚くし進行方向の後縁を薄くするように流線形に形成され、側面視が略矩形形状である舵本体部１２と、前縁に沿って設けられる略円柱形状の前縁側舵部１４と、後縁に沿って設けられる略円柱形状の後縁側舵部１６と、を備えることを特徴とする。【選択図】図４An object of the present invention is to provide a ship rudder capable of improving the fuel consumption of a ship. A ship rudder 10 is provided so as to be positioned behind a propulsion propeller 5, and has a round and thick leading edge in the advancing direction of the ship 1 and a thin trailing edge in the advancing direction. A rudder main body 12 which is streamlined and has a substantially rectangular shape when viewed from the side, a substantially cylindrical leading edge side rudder 14 provided along the leading edge, and a substantially cylindrical shape provided along the trailing edge. and a trailing edge side rudder portion 16. [Selection drawing] Fig. 4

Description

本発明は、船舶舵に関する。 The present invention relates to a ship rudder.

従来、船舶に装備される舵には様々なタイプのものが存在する。舵は、主に船舶の進行方向を自在に定めるための機構を構成する要素の１つである。本発明に関連する技術として、例えば、特許文献１には、プロペラの後方の流れ場に位置するように舵に付設された翼形状の複数のフィンを備え、前記フィンに働く前方成分の力によって推力を得るようにした船舶舵フィン装置であって、前記フィンは、前記舵の両側に張り出すように配設される右舷側フォアフィン、及び左舷側フォアフィンと、船尾から船首に向かう方向に見て、前進時に前記プロペラが右回りに回転する場合に前記右舷側フォアフィンの後方に配設される右舷側アフトフィン、又は前進時に前記プロペラが左回りに回転する場合に前記左舷側フォアフィンの後方に配設される左舷側アフトフィンと、を備える船舶舵フィン装置が開示されている。 Conventionally, there are various types of rudders equipped on ships. A rudder is one of the elements that mainly constitute a mechanism for freely determining the direction of travel of a ship. As a technique related to the present invention, for example, Patent Document 1 discloses a plurality of wing-shaped fins attached to the rudder so as to be positioned in the flow field behind the propeller, and the forward component force acting on the fins A ship rudder fin device for obtaining thrust, wherein the fins include a starboard side fore fin and a port side fore fin arranged so as to protrude from both sides of the rudder, and in a direction from the stern to the bow. See, the starboard aft fin disposed behind the starboard forefin when the propeller rotates clockwise when moving forward, or the port forefin when the propeller rotates counterclockwise when moving forward. and a port side aft fin disposed aft.

特開２０２０－１７５７４１号公報JP 2020-175741 A

船舶を駆動するために重油などの石油製品が燃料源となっているため、コストを抑えるためには燃費を良くする必要がある。舵は、上記のとおり、進行方向を制御する機能については着目されている。しかしながら、燃費の向上といった観点からは船舶の舵は改良されていないという実情がある。 Since petroleum products such as heavy oil are used as fuel sources to drive ships, it is necessary to improve fuel efficiency in order to keep costs down. As described above, the rudder has attracted attention for its function of controlling the direction of travel. However, the fact is that the rudder of ships has not been improved from the viewpoint of improving fuel efficiency.

本発明の目的は、船舶の燃費を良くすることを可能とする船舶舵を提供することである。 SUMMARY OF THE INVENTION It is an object of the present invention to provide a ship rudder that makes it possible to improve the fuel efficiency of a ship.

本発明に係る船舶舵は、プロペラの後方に位置するように設けられた船舶舵であって、 船の進行方向の前縁を丸く厚くし前記進行方向の後縁を薄くするように流線形に形成され、側面視が略矩形形状である舵本体部と、前記前縁に沿って上部から下部にわたって設けられる略円柱形状の前縁側舵部と、前記後縁に沿って上部から下部にわたって設けられる略円柱形状の後縁側舵部と、を備え、前記船舶舵を厚み方向に沿って切断した場合の断面形状は、前記舵本体部は流線形で、前記前縁側舵部及び前記後縁側舵部は略円形であり、
前記流線形の長手方向に沿った長さと前記略円形の前記長手方向に沿った長さの比率は、１８００：８０であることを特徴とする。
A ship rudder according to the present invention is a ship rudder provided so as to be positioned rearward of a propeller, and is streamlined so that the leading edge in the direction of travel of the ship is round and thick and the trailing edge in the direction of travel is thin. A rudder main body portion having a substantially rectangular shape in side view, a substantially cylindrical leading edge side rudder portion provided along the leading edge from top to bottom, and a rudder portion provided along the trailing edge from top to bottom. a substantially cylindrical trailing edge side rudder section, wherein the rudder body section has a streamlined cross-sectional shape when the ship rudder is cut along the thickness direction, and the leading edge side rudder section and the trailing edge side rudder section have a streamlined shape. is approximately circular,
A ratio of the length of the streamline along the longitudinal direction and the length of the substantially circular shape along the longitudinal direction is 1800:80.

また、本発明に係る船舶舵において、前記舵本体部の底面部に設けられ、所定の角度をなすように斜め下方向に延び、前記プロペラから流れてくる水を前記舵本体部に側面に誘導する一対の板状の底面側舵部を備えることが好ましい。 In the ship rudder according to the present invention, the rudder is provided on the bottom surface of the rudder main body, extends obliquely downward at a predetermined angle, and guides water flowing from the propeller to the side of the rudder main body. It is preferable to provide a pair of plate-like bottom surface side rudder portions.

また、本発明に係る船舶舵において、前記舵本体部の天井面部に設けられ、横方向に延びて前記底面側舵部により誘導された水を受け止めるための天井面側舵部を備えることが好ましい。 Further, in the ship rudder according to the present invention, it is preferable that a ceiling surface side rudder portion is provided on the ceiling surface portion of the rudder main body portion and extends laterally to receive water guided by the bottom surface side rudder portion. .

本発明によれば、船舶の燃費を良くすることができる。 Advantageous Effects of Invention According to the present invention, the fuel consumption of a ship can be improved.

本発明に係る実施形態の船舶舵の斜視図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view of the ship rudder of embodiment which concerns on this invention. 本発明に係る実施形態の船舶舵の側面図である。It is a side view of a ship rudder of an embodiment concerning the present invention. 本発明に係る実施形態において、船舶舵の前縁側から船舶舵を見た様子を示す正面図である。1 is a front view showing a state in which a ship rudder is viewed from the leading edge side of the ship rudder in the embodiment according to the present invention; FIG. 本発明に係る実施形態の船舶舵が船尾に装着された側面図である。1 is a side view of a ship rudder attached to the stern of an embodiment according to the present invention; FIG.

以下に、本発明に係る実施の形態について添付図面を参照しながら詳細に説明する。以下では、全ての図面において同様の要素には同一の符号を付し、重複する説明を省略する。また、本文中の説明においては、必要に応じそれ以前に述べた符号を用いるものとする。 BEST MODE FOR CARRYING OUT THE INVENTION Embodiments according to the present invention will be described in detail below with reference to the accompanying drawings. In the following, the same reference numerals are given to the same elements in all the drawings, and redundant explanations are omitted. Also, in the explanation in the text, the reference numerals mentioned before are used as necessary.

また、「前」「後」「左」「右」「上」「下」の語は、船体の前後方向、左右（幅）方向及び上下方向 にそれぞれ対応したものである。 The terms "front", "rear", "left", "right", "top" and "bottom" correspond to the longitudinal direction, lateral (width) direction and vertical direction of the hull, respectively.

図１は、本発明に係る実施形態の船舶舵１０の斜視図である。図２は、本発明に係る実施形態の船舶舵１０の側面図である。 FIG. 1 is a perspective view of a ship rudder 10 of an embodiment according to the present invention. FIG. 2 is a side view of the ship rudder 10 of the embodiment according to the present invention.

図３は、本発明に係る実施形態において、船舶舵１０の前縁側から船舶舵１０を見た様子を示す正面図である。図４は、本発明に係る実施形態の船舶舵１０が船尾２に装着された側面図である。 FIG. 3 is a front view showing a state in which the ship rudder 10 is seen from the leading edge side of the ship rudder 10 in the embodiment according to the present invention. FIG. 4 is a side view of the ship rudder 10 of the embodiment according to the present invention attached to the stern 2. FIG.

船舶舵１０は、船舶１の進行方向を自在に定めるための機構を構成する要素の１つである。船舶舵１０は、舵本体部１２と、前縁側舵部１４と、後縁側舵部１６と、底面側舵部１８と、天井面側舵部２０と、舵軸２２とを備えている。 The ship rudder 10 is one of the elements constituting a mechanism for freely determining the direction of travel of the ship 1 . The ship rudder 10 includes a rudder body portion 12 , a leading edge side rudder portion 14 , a trailing edge side rudder portion 16 , a bottom side rudder portion 18 , a ceiling side rudder portion 20 , and a rudder shaft 22 .

船舶１は、例えば、一軸船の船尾構造を有する肥大船型船舶であって、船体中央部から船幅が狭くなる船尾２に配設される船舶舵１０と、船舶舵１０と対向する船尾部４に設けられる推進用プロペラ５とを備えている。 The ship 1 is, for example, a bulky ship having a stern structure of a uniaxial ship, and includes a ship rudder 10 disposed at the stern 2 where the ship width narrows from the center of the hull, and a stern portion 4 facing the ship rudder 10. It is provided with a propeller 5 for propelling provided in.

なお、本実施形態では、船尾２から船首に向かう方向を見て、前進時に右回りに回転する推進用プロペラ５が用いられる例を示すが、これに限定されるものではなく、船尾２から船首に向かう方向を見て、前進時に左回りに回転する推進用プロペラ５が用いられるものであってもよい。 In this embodiment, an example is shown in which the propeller 5 for propulsion is rotated clockwise when viewed from the stern 2 toward the bow, but the present invention is not limited to this. A propulsion propeller 5 that rotates counterclockwise when moving forward may also be used.

船舶舵１０は、推進用プロペラ５の後方に位置するように設けられた舵である。推進用プロペラ５は、船舶を推進させるものであり、例えばプロペラシャフトが用いられている。この推進用プロペラ５は、その回転軸であるシャフトが前後方向に沿うように船尾部４に配設されている。 The ship rudder 10 is a rudder provided so as to be positioned behind the propulsion propeller 5 . The propulsion propeller 5 is for propelling the ship, and uses, for example, a propeller shaft. The propeller 5 for propulsion is arranged in the stern portion 4 so that the shaft, which is the axis of rotation thereof, extends in the longitudinal direction.

船舶舵１０は、上下方向に延びる舵軸２２によって船体に取り付けられており、舵軸２２に揺動可能（回動可能）とされている。船舶舵１０を切ることで、流れに対して迎え角をもたせて進行方向に直角な横方向に揚力を発生させて、その結果として生まれる回転方向のモーメントで船舶１を回頭させる。 The ship rudder 10 is attached to the hull by a vertically extending rudder shaft 22 and is swingable (rotatable) on the rudder shaft 22 . By turning the ship's rudder 10, an angle of attack is given to the flow to generate a lift force in the lateral direction perpendicular to the direction of travel, and the resulting rotational moment turns the ship 1. - 特許庁

舵本体部１２は、図１に示されるように、船舶１の進行方向の前縁を丸く厚くし進行方向の後縁を薄くするように流線形に形成される。また、舵本体部１２は、進行方向に沿って切断した場合の断面形状（図４のＡ－Ａ線断面図の断面形状）は、雫のような形を有している。なお、舵本体部１２の流線形の幅のうち、最大の幅は、例えば、約３５０ｍｍに設定するものとして説明するが、もちろん、適宜変更可能である。 As shown in FIG. 1, the rudder main body 12 is formed in a streamlined shape so that the leading edge in the traveling direction of the ship 1 is round and thick and the trailing edge in the traveling direction is thin. Further, the rudder main body 12 has a drop-like cross-sectional shape (cross-sectional shape taken along the line AA in FIG. 4) when cut along the traveling direction. Note that the maximum width of the streamlined width of the rudder main body 12 is set to, for example, about 350 mm, but it can of course be changed as appropriate.

また、舵本体部１２は、上部から下部までＡ－Ａ線断面図と同一の形状となるように形成されているが、上部と下部で若干大きさが異なるように形成してもよい。 Further, the rudder main body 12 is formed to have the same shape from the top to the bottom as the sectional view taken along line AA, but the top and bottom may be formed to have slightly different sizes.

舵本体部１２は、図２及ぶ図４に示されるように、側面視が略矩形形状を有する部材である。なお、略矩形形状の部材の縦方向の長さは約２９００ｍｍに設定し、横方向の長さは約１８００ｍｍに設定するものとして説明するが、もちろん、適宜変更可能である。また、舵本体部１２の前縁には前縁側舵部１４が設けられ、舵本体部１２の後縁には後縁側舵部１６が設けられている。 As shown in FIGS. 2 and 4, the rudder main body 12 is a member having a substantially rectangular shape when viewed from the side. The length of the substantially rectangular member in the vertical direction is set to about 2900 mm, and the length in the horizontal direction is set to about 1800 mm. A leading edge side rudder portion 14 is provided at the front edge of the rudder body portion 12 , and a trailing edge side rudder portion 16 is provided at the rear edge of the rudder body portion 12 .

前縁側舵部１４は、舵本体部１２の前縁の長手方向に沿って設けられる略円柱形状の部材である。略円柱形状とは、外形が円形の部材であればよく、例えば、中身が空洞の円筒であってもよい。なお、前縁側舵部１４の断面形状の直径は、約８０ｍｍに設定するものとして説明するが、もちろん、適宜変更可能である。 The leading edge side rudder portion 14 is a substantially cylindrical member provided along the longitudinal direction of the leading edge of the rudder body portion 12 . The substantially cylindrical shape may be a member having a circular outer shape, and may be, for example, a hollow cylinder. Although the cross-sectional diameter of the leading edge side rudder portion 14 is set to about 80 mm, it can of course be changed as appropriate.

後縁側舵部１６は、前縁側舵部１４と同様の形状を有し、舵本体部１２の後縁の長手方向に沿って設けられる略円柱形状の部材である。ここでは、前縁側舵部１４及び後縁側舵部１６の形状は同じであるものとして説明したが、もちろん、異なる形状であってもよく、例えば、直径を変えてもよく、一方を円柱とし、他方を円筒としてもよい。なお、前縁側舵部１４の断面形状の直径は、約８０ｍｍに設定するものとして説明するが、もちろん、適宜変更可能である。 The trailing edge side rudder portion 16 has the same shape as the leading edge side rudder portion 14 and is a substantially cylindrical member provided along the longitudinal direction of the trailing edge of the rudder body portion 12 . Although the leading edge rudder 14 and the trailing edge rudder 16 have the same shape here, they may of course have different shapes. For example, the diameter may be changed. The other may be cylindrical. Although the cross-sectional diameter of the leading edge side rudder portion 14 is set to about 80 mm, it can of course be changed as appropriate.

底面側舵部１８は、舵本体部１２の底面部に設けられ、所定の角度をなすように斜め下方向に延び、推進用プロペラ３５から流れてくる水を舵本体部１２に側面に誘導する一対の板状の部材である。より具体的には、一対の板状の部材は、舵本体部１２から横方向に延びた水平部と、所定の角度θ（約３０°）で曲げられて延伸する延伸部とを備える。この水平部の長さは、例えば、約１２０ｍｍに設定され、延伸部の長さも約１２０ｍｍに設定されるものとして説明するが、もちろん、適宜変更可能である。 The bottom side rudder portion 18 is provided on the bottom portion of the rudder body portion 12 and extends obliquely downward at a predetermined angle to guide water flowing from the propeller 35 for propelling to the side surface of the rudder body portion 12 . They are a pair of plate-like members. More specifically, the pair of plate-like members has a horizontal portion extending laterally from the rudder main body portion 12 and an extending portion bent at a predetermined angle θ (approximately 30°) and extending. The length of the horizontal portion is set to, for example, about 120 mm, and the length of the extended portion is also set to about 120 mm, but these can of course be changed as appropriate.

底面側舵部１８は、上記のように、一対の板状の部材で構成されており、長手方向の端辺は、舵本体部１２の短辺に沿って設けられている。一対の板状の部材は、船舶舵１０の前縁側から見た場合に略ハの字形状を有している。 As described above, the bottom side rudder portion 18 is composed of a pair of plate-like members, and the longitudinal edges thereof are provided along the short sides of the rudder main body portion 12 . The pair of plate-like members has a substantially V shape when viewed from the leading edge side of the ship rudder 10 .

一対の板状の部材がなす角度は、ここでは１２０°であるものとして説明するが、もちろん、適宜変更可能である。また、一対の板状の部材は、別部材で構成されていてもよいが、一体形成されていてもよい。 Although the angle formed by the pair of plate-like members is 120° here, it can of course be changed as appropriate. Moreover, the pair of plate-like members may be configured as separate members, or may be integrally formed.

天井面側舵部２０は、舵本体部１２の天井面部に設けられ、横方向に延びて底面側舵部１８により誘導された水を受け止めるための部材である。 The ceiling surface side rudder portion 20 is provided on the ceiling surface portion of the rudder main body portion 12 and is a member for receiving water guided by the bottom surface side rudder portion 18 by extending in the lateral direction.

天井面側舵部２０は、一枚の板状部材が舵本体部１２の天井面部に設けられており、天井面部の両側面から突出するように設けられている。なお、突出した部分の長さは、底面側舵部１８の水平部の長さと揃っていることが好ましく、ここでは、約１２０ｍｍであるものとして説明する。また、ここでは、天井面側舵部２０は、一枚の板状部材で構成されているものとして説明したが、一対の板状部材で構成されていてもよく、この一対の板状部材のなす角度を略１８０°にしてもよい。 The ceiling surface side rudder portion 20 is a plate-like member provided on the ceiling surface portion of the rudder main body portion 12 so as to protrude from both side surfaces of the ceiling surface portion. The length of the projecting portion is preferably the same as the length of the horizontal portion of the bottom side rudder portion 18, and here, it is assumed to be about 120 mm. Further, here, the ceiling surface side rudder section 20 has been described as being composed of a single plate-like member, but it may be composed of a pair of plate-like members. The angle formed may be approximately 180°.

続いて、上記構成から船舶舵１０について説明する。従来、船舶を用いて、荷物等の運搬を行うことがある。船舶を動かすための燃料源は、重油などの化石燃料である。船舶を用いた運搬事業を営む上では、経費を抑えることが好ましく、経費削減の１つの手段として、例えば、燃費の向上が求められている。このような課題に対して、本発明に係る実施形態の船舶舵１０は顕著な効果を発揮する。 Next, the ship rudder 10 will be described based on the above configuration. 2. Description of the Related Art Conventionally, ships are sometimes used to transport cargo and the like. Fossil fuels such as heavy oil are the source of fuel to power ships. It is preferable to keep costs down in running a transportation business using ships, and as one means of cost reduction, for example, improvement in fuel efficiency is required. The ship rudder 10 according to the embodiment of the present invention exerts a remarkable effect on such problems.

船舶舵１０は、船舶１の進行方向の前縁を丸く厚くし進行方向の後縁を薄くするように流線形に形成される。そして、船舶舵１０を切ることで、流れに対して迎え角をもたせて進行方向に直角な横方向に揚力を発生させて、船舶１の進行方向を変えている。 The ship rudder 10 is formed in a streamlined shape so that the leading edge in the direction of travel of the ship 1 is round and thick and the trailing edge in the direction of travel is thin. By turning the ship's rudder 10, an angle of attack is given to the flow to generate lift in the lateral direction perpendicular to the direction of travel, thereby changing the direction of travel of the ship 1.例文帳に追加

また、船舶舵１０は、舵本体部１２の前縁に前縁側舵部１４が設けられるため、推進用プロペラ５側から流入してくる水を分流し、前縁側舵部１４の周囲を流れる流速を加速させる。 Further, since the rudder 10 is provided with the leading edge side rudder portion 14 at the leading edge of the rudder main body portion 12, the water flowing in from the propulsion propeller 5 side is diverted, and the flow speed around the leading edge side rudder portion 14 is reduced. to accelerate

そして、船舶舵１０の底面側舵部１８は、一対の板状部材が舵本体部１２の底面部に設けられて所定の角度θをなすように斜め下方向に延びているため、推進用プロペラ３５から流れてくる水を舵本体部１２に側面に誘導する。 The bottom side rudder portion 18 of the ship rudder 10 has a pair of plate-like members provided on the bottom portion of the rudder body portion 12 and extending obliquely downward at a predetermined angle θ. The water flowing from 35 is guided to the side of the rudder main body 12. - 特許庁

また、船舶舵１０の天井面側舵部２０は、舵本体部１２の天井面部に設けられ、横方向に延びて底面側舵部１８により誘導された水を受け止めて乱流を生じさせる。これにより、水の流速を加速させることが出来る。 The ceiling side rudder portion 20 of the ship rudder 10 is provided on the ceiling surface portion of the rudder body portion 12 and extends laterally to receive water guided by the bottom side rudder portion 18 to generate turbulence. Thereby, the flow velocity of water can be accelerated.

さらに、船舶舵１０は、舵本体部１２の後縁に後縁側舵部１６が設けられるため、前縁側舵部１４及び舵本体部１２側から流れてくる水を分流し、前縁側舵部１４の周囲を流れる流速を加速させる。 Further, since the rudder 10 is provided with the trailing edge side rudder 16 at the trailing edge of the rudder main body 12 , the water flowing from the leading edge side rudder 14 and the rudder main body 12 side is diverted, and the leading edge side rudder 14 is diverted. to accelerate the flow velocity around the

以上のように、船舶舵１０によれば、推進用プロペラ５側から流れてくる水の流速を加速させる機構が複数設けられているため、一般的な舵に比べて、同一量の燃料で船舶１の速度を早くすることができる。すなわち、船舶舵１０によれば、燃費を向上させることができるという顕著な効果を奏する。 As described above, according to the ship rudder 10, since a plurality of mechanisms for accelerating the flow velocity of the water flowing from the propulsion propeller 5 side are provided, compared with a general rudder, the same amount of fuel can be used for the ship. 1 speed can be increased. That is, according to the ship rudder 10, there exists a remarkable effect that a fuel consumption can be improved.

１ 船舶、２ 船尾、４ 船尾部、５ 推進用プロペラ、１０ 船舶舵、１２ 舵本体部、１４ 前縁側舵部、１６ 後縁側舵部、１８ 底面側舵部、２０ 天井面側舵部、２２ 舵軸。
Reference Signs List 1 ship 2 stern 4 stern 5 propeller for propelling 10 ship rudder 12 rudder main body 14 leading edge side rudder 16 trailing edge side rudder 18 bottom side rudder 20 ceiling side rudder 22 rudder shaft.

Claims (3)

プロペラの後方に位置するように設けられた船舶舵であって、
船の進行方向の前縁を丸く厚くし前記進行方向の後縁を薄くするように流線形に形成され、側面視が略矩形形状である舵本体部と、
前記前縁に沿って上部から下部にわたって設けられる略円柱形状の前縁側舵部と、
前記後縁に沿って上部から下部にわたって設けられる略円柱形状の後縁側舵部と、
を備え、
前記船舶舵を厚み方向に沿って切断した場合の断面形状は、前記舵本体部は流線形で、前記前縁側舵部及び前記後縁側舵部は略円形であり、
前記流線形の長手方向に沿った長さと前記略円形の前記長手方向に沿った長さの比率は、１８００：８０であることを特徴とする船舶舵。 A ship rudder provided so as to be positioned behind the propeller,
a rudder main body having a streamlined shape with a round and thick leading edge in the direction of travel of the ship and a thin trailing edge in the direction of travel, and having a substantially rectangular shape when viewed from the side;
a substantially cylindrical leading-edge-side rudder provided along the leading edge from top to bottom;
a substantially cylindrical trailing edge side rudder provided along the trailing edge from top to bottom;
with
When the ship rudder is cut along the thickness direction, the rudder main body portion has a streamlined cross-sectional shape, and the leading edge side rudder portion and the trailing edge side rudder portion have a substantially circular shape,
A ship rudder, wherein the ratio of the length along the longitudinal direction of the streamline and the length along the longitudinal direction of the substantially circular shape is 1800:80. 請求項１に記載の船舶舵において、
前記舵本体部の底面部に設けられ、所定の角度をなすように斜め下方向に延び、前記プロペラから流れてくる水を前記舵本体部に側面に誘導する一対の板状の底面側舵部を備えることを特徴とする船舶舵。 A ship rudder according to claim 1,
A pair of plate-shaped bottom side rudder portions provided on the bottom surface portion of the rudder body portion and extending obliquely downward at a predetermined angle to guide water flowing from the propeller to the side surface of the rudder body portion. A ship rudder, comprising: 請求項２に記載の船舶舵において、
前記舵本体部の天井面部に設けられ、横方向に延びて前記底面側舵部により誘導された水を受け止めるための天井面側舵部を備えることを特徴とする船舶舵。 The ship rudder according to claim 2,
A ship rudder comprising a ceiling side rudder provided on the ceiling side of the rudder main body and extending in a lateral direction for receiving water guided by the bottom side rudder.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002178991A (en) 2000-12-14 2002-06-26 Japan Hamuwaaji Kk High lift rudder for ship
JP2007137314A (en) 2005-11-21 2007-06-07 Shin Kurushima Dockyard Co Ltd Rudder
JP2015131632A (en) 2013-12-10 2015-07-23 ジャパン・ハムワージ株式会社 Vessel rudder

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0713698U (en) * 1993-08-18 1995-03-07 ジャパン・ハムワージ株式会社 Rudder and rudder connection structure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002178991A (en) 2000-12-14 2002-06-26 Japan Hamuwaaji Kk High lift rudder for ship
JP2007137314A (en) 2005-11-21 2007-06-07 Shin Kurushima Dockyard Co Ltd Rudder
JP2015131632A (en) 2013-12-10 2015-07-23 ジャパン・ハムワージ株式会社 Vessel rudder

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