JPH06247388A - Rudder structure of ship - Google Patents
Rudder structure of shipInfo
- Publication number
- JPH06247388A JPH06247388A JP3232893A JP3232893A JPH06247388A JP H06247388 A JPH06247388 A JP H06247388A JP 3232893 A JP3232893 A JP 3232893A JP 3232893 A JP3232893 A JP 3232893A JP H06247388 A JPH06247388 A JP H06247388A
- Authority
- JP
- Japan
- Prior art keywords
- propeller
- rudder
- hull
- center line
- ship
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Vibration Prevention Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、船舶における舵構造に
関し、特に２枚舵を有するものに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rudder structure for a ship, and more particularly to a rudder structure having two rudders.
【０００２】[0002]
【従来の技術】一般に、船舶の操縦性能の向上を図るた
めに、船体に２枚の舵を装備したものがある。2. Description of the Related Art In general, there are boats equipped with two rudders in order to improve the steering performance of a boat.
【０００３】この２枚舵を装備した船舶は、図７に示す
ように、船体５１のプロペラ５２の後方位置でかつプロ
ペラ中心線に対して左右両側に舵５３がそれぞれ装備さ
れていた。As shown in FIG. 7, the vessel equipped with this two-rudder was equipped with rudders 53 at the rear position of the propeller 52 of the hull 51 and on both left and right sides with respect to the propeller center line.
【０００４】[0004]
【発明が解決しようとする課題】ところで、上記のよう
に、プロペラ中心線の左右両側に、舵がそれぞれ配置さ
れていると、プロペラの直ぐ後方が開放状態となり、プ
ロペラの直ぐ後方に舵が配置されている船舶に見られる
ような、プロペラの回転エネルギーの回収による船体効
率の改善および伴流率の改善が殆ど見られないという問
題があった。By the way, as described above, when the rudder is arranged on each of the left and right sides of the propeller center line, the rear portion of the propeller is opened immediately behind and the rear portion is arranged immediately behind the propeller. There is a problem in that the improvement of hull efficiency and the improvement of wake rate due to the recovery of the rotational energy of the propeller as seen in the existing ships are hardly seen.
【０００５】そこで、本発明は船体効率および伴流率の
改善を図り得る船舶における舵構造を提供することを目
的とする。Therefore, an object of the present invention is to provide a rudder structure for a ship which can improve the efficiency of the hull and the wake rate.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するた
め、本発明の船舶における舵構造は、船体のプロペラ後
方位置でかつプロペラ中心線の左右両側に舵がそれぞれ
配置された船舶において、上記各舵の互いに対向する側
面に、かつプロペラ中心線とほぼ同一高さ位置に、断面
形状が翼形状の水平フィンを取り付けたものである。In order to solve the above-mentioned problems, a rudder structure for a ship according to the present invention is a rudder structure for a ship in which a rudder is arranged at a position behind a propeller of a hull and on both left and right sides of a propeller center line. Horizontal fins having a wing-shaped cross section are attached to the side surfaces of the rudder facing each other and at substantially the same height as the propeller center line.
【０００７】[0007]
【作用】上記の構成によると、各舵の互いに対向する側
面に、かつプロペラ中心線とほぼ同一高さ位置に、断面
形状が翼形状の水平フィンを取り付けたので、プロペラ
誘導速度の周方向成分が整流されるとともに、プロペラ
の回転に伴うエネルギーが回収されて、舵自体にスラス
トが発生する。According to the above construction, horizontal fins having a wing-shaped cross section are attached to the side surfaces of each rudder facing each other and at substantially the same height as the propeller center line. Is rectified, and energy accompanying the rotation of the propeller is recovered, and thrust is generated in the rudder itself.
【０００８】[0008]
【実施例】以下、本発明の第１の実施例を図１〜図６に
基づき説明する。図１および図２において、１は２枚舵
を有する船舶の船体で、船体１のプロペラ２後方位置で
かつプロペラ中心線ａに対して左右両側に舵３がそれぞ
れラダーホーン４を介して装備されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. 1 and 2, reference numeral 1 denotes a hull of a ship having two rudders, and a rudder 3 is provided behind a propeller 2 of the hull 1 and on both left and right sides of a propeller center line a via rudder horns 4, respectively. ing.
【０００９】そして、上記各舵３の互いに対向する内側
側面（プロペラ中心線ａ側）に、かつプロペラ中心線ａ
とほぼ同一高さで水平フィン５がそれぞれ取り付けられ
ている。また、これら各水平フィン５の断面形状は、図
５に示すように、翼形状にされており、これにより、プ
ロペラ誘導速度の周方向成分が整流されるとともに、プ
ロペラの回転に伴うエネルギーが回収されて、スラスト
に変換される。Then, on the inner side surfaces (on the side of the propeller center line a) of the respective rudders 3 facing each other, and on the propeller center line a
Horizontal fins 5 are attached at substantially the same height. Further, as shown in FIG. 5, the cross-sectional shape of each of the horizontal fins 5 has a blade shape, which rectifies the circumferential component of the propeller induction speed and recovers the energy accompanying the rotation of the propeller. It is converted to thrust.
【００１０】すなわち、各水平フィン５は、プロペラ２
の回転方向に対応して前方への推力が得られるようにさ
れており、プロペラの回転方向が船尾から見て時計方向
である場合には、プロペラ後流は右舷側の水平フィン５
Ａにおいては、フィン前方上側から後方下側に向かう流
入迎角とされ、また左舷側の水平フィン５Ｂにおいて
は、前方下側から後方上側に向かう流入迎角が付与され
る。したがって、左右に設けられる水平フィン５の断面
形状は、上下において逆向きとなる。That is, each horizontal fin 5 has a propeller 2
The forward thrust is obtained according to the rotation direction of the propeller. When the propeller rotates in the clockwise direction as seen from the stern, the propeller wake is the horizontal fin 5 on the starboard side.
In A, the inflow elevation angle from the upper front side of the fin toward the lower rear side is given, and in the horizontal fin 5B on the port side, the inflow elevation angle from the lower front side to the upper rear side is given. Therefore, the cross-sectional shapes of the horizontal fins 5 provided on the left and right are opposite in the vertical direction.
【００１１】ここで、上記水平フィン５により、スラス
トが得られる原理を、図５に基づき説明すると、水平フ
ィン５に流れがある流入角（θ）でもって当たると、流
れの方向に沿って抵抗（Ｄ）が発生するとともに、フィ
ン（翼）回りに生じる循環（Γ）により流れ（Ｖ）の方
向と直角方向に揚力（Ｌ）が発生する。Here, the principle that thrust is obtained by the horizontal fins 5 will be described with reference to FIG. 5. When the horizontal fins 5 strike at a certain inflow angle (θ), the resistance along the flow direction is increased. (D) is generated, and the lift (L) is generated in the direction perpendicular to the direction of the flow (V) by the circulation (Γ) generated around the fins (blades).
【００１２】そして、この抵抗（Ｄ）と揚力（Ｌ）との
合力（Ｎ）の水平成分がスラスト（Ｔ）として船体に作
用するため、スラスト減少率（１−ｔ）が増大し、船体
効率（ηh ）が向上する。Since the horizontal component of the resultant force (N) of the resistance (D) and the lift (L) acts on the hull as thrust (T), the thrust reduction rate (1-t) increases and the hull efficiency increases. (Η h ) is improved.
【００１３】勿論、上記各舵３に取り付けられる各水平
フィン５は、図３および図４に示すように、舵３がどち
らの方向に転舵した場合でも、互いに接触しないような
大きさおよび形状にされている。Of course, as shown in FIGS. 3 and 4, the horizontal fins 5 attached to each rudder 3 have such a size and shape that they do not come into contact with each other when the rudder 3 is steered in either direction. Has been
【００１４】ここで、上記の舵構造、すなわち水平フィ
ン５を取り付けた場合と、従来の単なる２枚舵だけの場
合とにおける船体効率（ηh ）、伴流率（１−ｗ）、ス
ラスト減少率（１−ｔ）を示すと、図６のグラフのよう
になる。Here, the hull efficiency (η h ), the wake rate (1-w), and the thrust reduction in the above rudder structure, that is, the case where the horizontal fins 5 are attached and the case where only the conventional two rudder is used. The rate (1-t) is shown in the graph of FIG.
【００１５】なお、図６中、本実施例における舵構造の
場合を破線で示し、従来の場合を実線で示している。こ
の図６から分かるように、単なる２枚舵だけの場合に比
べて、水平フィン５を取り付けた場合の方が、伴流率
（１−ｗ）およびスラスト減少率（１−ｔ）が向上して
おり、また船体効率（ηh ）については約６％程度向上
している。Incidentally, in FIG. 6, the case of the rudder structure in this embodiment is shown by a broken line, and the case of the conventional case is shown by a solid line. As can be seen from FIG. 6, the wake rate (1-w) and the thrust reduction rate (1-t) are improved when the horizontal fins 5 are attached, as compared with the case where only two rudders are used. In addition, the hull efficiency (η h ) has improved by about 6%.
【００１６】なお、図６中の横軸のＶは船速、Ｊは前進
常数である。このように、各舵３の内側側面にかつプロ
ペラ中心線ａとほぼ同一高さに、断面形状が翼形状の水
平フィン５を取り付けることにより、スラスト減少率、
伴流率および船体効率の向上を図ることができる。Incidentally, V on the horizontal axis in FIG. 6 is the ship speed, and J is the forward constant. As described above, by installing the horizontal fins 5 having a blade-shaped cross section on the inner side surface of each rudder 3 and at substantially the same height as the propeller center line a, the thrust reduction rate,
The wake rate and hull efficiency can be improved.
【００１７】なお、水平フィン５を、プロペラ中心線と
同一高さに設けたのは、その取付位置において、最も舵
抗力減少率が小さくなるからである。The horizontal fins 5 are provided at the same height as the propeller center line because the steering drag reduction rate is the smallest at the mounting position.
【００１８】[0018]
【発明の効果】以上のように本発明の構成によると、各
舵の互いに対向する側面に、かつプロペラ中心線とほぼ
同一高さ位置に、断面形状が翼形状の水平フィンを取り
付けたので、スラスト減少率、伴流率および船体効率の
向上を図ることができる。As described above, according to the configuration of the present invention, since the horizontal fins having a wing-shaped cross section are attached to the side surfaces of each rudder facing each other and at substantially the same height as the propeller center line, The thrust reduction rate, wake rate, and hull efficiency can be improved.
【図１】本発明の一実施例における舵構造を示す要部背
面図である。FIG. 1 is a rear view of an essential part showing a rudder structure in one embodiment of the present invention.
【図２】図１のＡ−Ａ断面図である。FIG. 2 is a sectional view taken along line AA of FIG.
【図３】同実施例における舵構造の動作状態を示すＡ−
Ａ相当断面図である。FIG. 3 is an A- showing the operating state of the rudder structure in the embodiment.
It is an A equivalent sectional view.
【図４】同実施例における舵構造の動作状態を示すＡ−
Ａ相当断面図である。FIG. 4 is an A- showing the operating state of the rudder structure in the embodiment.
It is an A equivalent sectional view.
【図５】同実施例の舵構造における水平フィンに作用す
る力を説明する原理図である。FIG. 5 is a principle diagram illustrating a force acting on a horizontal fin in the rudder structure of the embodiment.
【図６】同実施例の舵構造における各効率を示すグラフ
である。FIG. 6 is a graph showing each efficiency in the rudder structure of the embodiment.
【図７】従来例における舵構造を示す斜視図である。FIG. 7 is a perspective view showing a rudder structure in a conventional example.
１ 船体 ２ プロペラ ３ 舵 ５ 水平フィン 1 Hull 2 Propeller 3 Rudder 5 Horizontal fin
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成５年４月１６日[Submission date] April 16, 1993
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１７[Correction target item name] 0017
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１７】なお、水平フィン５を、プロペラ中心線と
同一高さに設けたのは、その取付位置において、最も舵
抗力が減少するからである。The horizontal fins 5 are provided at the same height as the center line of the propeller because the rudder resistance is reduced most at the mounting position.
Claims (1)
心線の左右両側に舵がそれぞれ配置された船舶におい
て、上記各舵の互いに対向する側面に、かつプロペラ中
心線とほぼ同一高さ位置に、断面形状が翼形状の水平フ
ィンを取り付けたことを特徴とする船舶における舵構
造。1. A ship in which rudders are arranged at a position behind a propeller of a hull and on both left and right sides of a propeller center line, respectively, on side surfaces of the rudders facing each other and at substantially the same height as the propeller center line. A rudder structure for a ship, in which horizontal fins having a wing-shaped cross section are attached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3232893A JPH06247388A (en) | 1993-02-23 | 1993-02-23 | Rudder structure of ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3232893A JPH06247388A (en) | 1993-02-23 | 1993-02-23 | Rudder structure of ship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06247388A true JPH06247388A (en) | 1994-09-06 |
Family
ID=12355880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3232893A Pending JPH06247388A (en) | 1993-02-23 | 1993-02-23 | Rudder structure of ship |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06247388A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002090182A1 (en) * | 2001-05-09 | 2002-11-14 | Japan Hamworthy & Co., Ltd. | Twin rudder system for large ship |
| KR20030082748A (en) * | 2002-04-18 | 2003-10-23 | 현대중공업 주식회사 | Standing in law type propeller and rudder |
| JP2007326502A (en) * | 2006-06-09 | 2007-12-20 | Japan Hamuwaaji Kk | Mariner type high-lift two-rudder device |
| JP2016060307A (en) * | 2014-09-17 | 2016-04-25 | ジャパン・ハムワージ株式会社 | Two rudder system |
-
1993
- 1993-02-23 JP JP3232893A patent/JPH06247388A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002090182A1 (en) * | 2001-05-09 | 2002-11-14 | Japan Hamworthy & Co., Ltd. | Twin rudder system for large ship |
| US6886485B2 (en) | 2001-05-09 | 2005-05-03 | Japan Hamworthy & Co., Ltd. | Twin-rudder system for large ship |
| KR100950951B1 (en) * | 2001-05-09 | 2010-04-02 | 재팬 햄워씨 가부시키가이샤 | Twin rudder system for large ship |
| KR20030082748A (en) * | 2002-04-18 | 2003-10-23 | 현대중공업 주식회사 | Standing in law type propeller and rudder |
| JP2007326502A (en) * | 2006-06-09 | 2007-12-20 | Japan Hamuwaaji Kk | Mariner type high-lift two-rudder device |
| JP2016060307A (en) * | 2014-09-17 | 2016-04-25 | ジャパン・ハムワージ株式会社 | Two rudder system |
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