JP2002178992A - Rudder for ship - Google Patents
Rudder for shipInfo
- Publication number
- JP2002178992A JP2002178992A JP2000375755A JP2000375755A JP2002178992A JP 2002178992 A JP2002178992 A JP 2002178992A JP 2000375755 A JP2000375755 A JP 2000375755A JP 2000375755 A JP2000375755 A JP 2000375755A JP 2002178992 A JP2002178992 A JP 2002178992A
- Authority
- JP
- Japan
- Prior art keywords
- rudder
- height
- wave
- ship
- boat
- 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.)
- Withdrawn
Links
Classifications
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
Landscapes
- Traffic Control Systems (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、船舶用舵に関
し、特に軽荷状態において舵に作用する造波抵抗を低減
させることのできる船舶用舵に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rudder for a boat, and more particularly to a rudder for a boat capable of reducing wave-making resistance acting on the rudder under light load conditions.
【０００２】[0002]
【従来の技術】船舶用舵においては、満載状態では舵が
水面を突き切ることはないので、舵に作用する造波抵抗
は小さい。これに対し軽荷状態では、舵が水面を突き切
るので、舵に作用する造波抵抗は大きくなり、船舶の推
進性能が低下する一因となる。2. Description of the Related Art In a rudder for ships, the rudder does not cut off the water surface in a fully loaded state, so that wave-making resistance acting on the rudder is small. On the other hand, in the light load state, the rudder cuts off the water surface, so that the wave-making resistance acting on the rudder increases, which causes a decrease in the propulsion performance of the ship.
【０００３】このように軽荷状態における推進性能の低
下を防止する従来の技術としては、実開平５−２６７９
７号公報に開示された技術がある。この技術に基づく船
舶用舵は、図２（ａ）の側面図および図２（ｂ）の断面
図に示すように、軽荷状態の船舶２１の水線面ＷＬの下
方近傍位置で、プロペラ２２後方の舵２３の前縁部及び
少なくとも前部の側部に、またはラダ−ホ−ン２４（図
２ではラダ−ホ−ン）に所定幅の水流規制板２５を、舵
２３またはラダ−ホ−ン２４の表面から略水平状に設け
たものであり、舵２１の造波抵抗を減少させるものであ
る。[0003] As a conventional technique for preventing a decrease in propulsion performance in a light load state as described above, Japanese Unexamined Utility Model Publication No. 5-2679.
There is a technique disclosed in Japanese Patent Application Laid-Open No. 7-1995. As shown in the side view of FIG. 2A and the cross-sectional view of FIG. 2B, a boat rudder based on this technique is configured such that a propeller 22 A water flow regulating plate 25 having a predetermined width is provided on the front edge portion and at least the front side portion of the rear rudder 23 or on a rudder horn 24 (ladder horn in FIG. 2). The rudder 21 is provided in a substantially horizontal shape from the surface of the rudder 24 to reduce the wave-making resistance of the rudder 21.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上述し
た実開平５−２６７９７号公報に開示された船舶用舵に
は、次のような問題点がある。舵に水平な状態で水流規
制板を取り付けるものであるため、水流をある程度規制
する効果はあるものの、舵で造られる波を打ち消して、
効果的に舵の造波抵抗を低減できるものではなかった。However, the rudder for a boat disclosed in Japanese Utility Model Laid-Open Publication No. Hei 5-26797 has the following problems. Since the water flow regulation plate is attached to the rudder in a horizontal state, it has the effect of restricting the water flow to some extent, but cancels out the waves created by the rudder,
It was not possible to effectively reduce the wave drag of the rudder.
【０００５】本発明は、従来技術の上述のような問題点
を解消するためになされたものであり、船舶用舵の造波
抵抗を効果的に低減することのできる船舶用舵を提供す
ることを目的としている。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and provides a boat rudder capable of effectively reducing the wave-making resistance of the boat rudder. It is an object.
【０００６】[0006]
【課題を解決するための手段】この発明に係る船舶用舵
は、船舶用舵において、舵の前縁近傍に、高さ方向取り
付け位置が、軽荷状態の喫水線の高さから下方に舵の高
さの２５％以内の位置となるように、上に凸のキャンバ
−を有するフィンを略水平に設けたものである。A rudder for a boat according to the present invention is a rudder for a boat, in which a mounting position in a height direction is set near a leading edge of the rudder so that the rudder can be moved downward from the height of a light waterline. Fins having upwardly projecting cambers are provided substantially horizontally so as to be positioned within 25% of the height.
【０００７】この発明に係る船舶用舵において、舵の前
縁近傍にフィンを取り付けたのは、次の理由による。軽
荷状態において舵によって造られる波は、舵の前縁付近
で最も波高が高くなる。そして、波高が高くなるほど舵
には大きな力（抵抗）が作用するので、波高の高い波を
フィンで造られる波で打ち消して、舵に作用する造波抵
抗を効果的に低減するためである。In the rudder for a boat according to the present invention, the fin is mounted near the leading edge of the rudder for the following reason. The wave created by the rudder in a light load condition has the highest wave height near the leading edge of the rudder. Then, as the wave height becomes higher, a greater force (resistance) acts on the rudder, so that the wave having a higher wave height is canceled by the wave made of the fins, and the wave-making resistance acting on the rudder is effectively reduced.
【０００８】また、上に凸のキャンバ−を有するフィン
を、舵の前縁近傍に取り付けたのは、波の造られる舵前
縁部における水面近傍の圧力上昇を、フィンの水面側を
負圧とすることで抑えて、造波を小さくすることができ
るからである。The reason why the fin having the upwardly projecting camber is mounted near the leading edge of the rudder is that the rise in pressure near the water surface at the rudder leading edge where waves are generated is caused by the negative pressure on the water surface side of the fin. By doing so, it is possible to reduce the wave making.
【０００９】また、フィンを取り付ける高さ方向位置
を、軽荷状態の喫水線の高さから下方に舵の高さの２５
％以内の位置となるようにしたのは、２５％を超えて深
い位置に取り付けたのでは、フィンによる造波効果が小
さくなり、舵によって造られる波を打ち消すことができ
ないからである。Further, the position of the fin to be mounted in the height direction is set to be lower than the level of the waterline in the light load state by 25% of the rudder height.
The reason for setting the position within the range of% is that if it is mounted at a position deeper than 25%, the wave-forming effect of the fins is reduced, and the wave generated by the rudder cannot be canceled.
【００１０】[0010]
【発明の実施の形態 】本発明の実施の形態を、図面を
参照して説明する。図１は本発明の船舶用舵の実施の形
態の説明図であり、（ａ）は船舶用舵の側面図、（ｂ）
は船舶用舵の平面図である。この船舶用舵は、一般的な
一軸船（一つの推進機を持つ船舶）１において、プロペ
ラ２後方の舵３の前縁近傍の両側面に、上に凸のキャン
バ−を有するフィン４を取り付けている。Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view of an embodiment of a boat rudder according to the present invention, wherein (a) is a side view of the boat rudder, and (b)
FIG. 2 is a plan view of a rudder for a ship. In this ship rudder, a fin 4 having an upwardly convex camber is attached to both sides of a general uniaxial ship (a ship having one propulsion device) 1 near a front edge of a rudder 3 behind a propeller 2. ing.
【００１１】このフィン４の高さ方向取り付け高さは、
軽荷状態（空荷状態）の喫水線ＷＬの高さから下方に、
舵３の高さＨの２５％以内の高さとする。The mounting height of the fins 4 in the height direction is:
From the height of the waterline WL in the light load state (empty load state),
The height is set within 25% of the height H of the rudder 3.
【００１２】本発明の船舶用舵は、上述したように舵３
にフィン４を取り付けているので、船舶が軽荷状態の時
に舵３が水面を突ききって波が発生しても、フィン４で
造った波で舵で造った波を打ち消して、舵に造波抵抗が
作用しないようにすることができる。The marine rudder according to the present invention has a rudder 3 as described above.
Since the fins 4 are attached to the rudder, even if the rudder 3 pierces the water surface and waves are generated when the ship is lightly loaded, the waves created by the fins 4 cancel the waves created by the rudder, and Wave resistance can be prevented from acting.
【００１３】なお、フィンを取り付ける高さ方向位置
を、軽荷状態の喫水線の高さから下方に舵の高さの２５
％以内の位置となるようにしたのは、２５％を超えて深
い位置に取り付けたのでは、フィンによる造波効果が小
さくなり、舵によって造られる波を打ち消すことができ
ないからである。The position of the fins to be mounted in the height direction is set at 25 degrees of the rudder height downward from the height of the waterline in the light load state.
The reason for setting the position within the range of% is that if it is mounted at a position deeper than 25%, the wave-forming effect of the fins is reduced, and the wave generated by the rudder cannot be canceled.
【００１４】図１においては、フィン４は舵３の両舷側
に設けているが、右舷側または左舷側の片側のみでもよ
い。また、図１においては、フィン４は舵に直接取り付
けているが、舵３を支持するラダ−ホ−ンに取り付けて
もよい。また、フィン４は舵３の前縁から舵３の厚さが
最大となる位置までの間にとりつける。In FIG. 1, the fins 4 are provided on both sides of the rudder 3, but may be provided on only one of the starboard side and the port side. In FIG. 1, the fins 4 are directly attached to the rudder, but they may be attached to a rudder horn supporting the rudder 3. The fins 4 are mounted between the leading edge of the rudder 3 and the position where the thickness of the rudder 3 is maximized.
【００１５】[0015]
【発明の効果】この発明により、軽荷状態の船舶の舵に
作用する造波抵抗を低減することができる。According to the present invention, wave resistance acting on the rudder of a lightly loaded ship can be reduced.
【図１】本発明の船舶用舵の説明図であり、（ａ）は船
舶用舵の側面図、（ｂ）は船舶用舵の平面図である。FIG. 1 is an explanatory view of a boat rudder according to the present invention, in which (a) is a side view of the boat rudder, and (b) is a plan view of the boat rudder.
【図２】従来の水流規制板を有する船舶用舵の説明図で
あり、（ａ）は船舶用舵の側面図、（ｂ）は船舶用舵の
断面図である。FIG. 2 is an explanatory view of a conventional rudder for a boat having a water flow regulating plate, wherein (a) is a side view of the rudder for a boat, and (b) is a cross-sectional view of the rudder for a boat.
１ 船舶 ２ プロペラ ３ 舵 ４ フィン 1 ship 2 propeller 3 rudder 4 fin
Claims (1)
さ方向取り付け位置が、軽荷状態の喫水線の高さから下
方に舵の高さの２５％以内の位置となるように、上に凸
のキャンバ−を有するフィンを略水平に設けたことを特
徴とする船舶用舵。1. In a rudder for a ship, a height direction mounting position is set to a position within 25% of a height of the rudder in a vicinity of a front edge of the rudder from a height of a waterline in a light load state. A rudder for ships, wherein fins having upwardly convex cambers are provided substantially horizontally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000375755A JP2002178992A (en) | 2000-12-11 | 2000-12-11 | Rudder for ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000375755A JP2002178992A (en) | 2000-12-11 | 2000-12-11 | Rudder for ship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002178992A true JP2002178992A (en) | 2002-06-26 |
Family
ID=18844724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000375755A Withdrawn JP2002178992A (en) | 2000-12-11 | 2000-12-11 | Rudder for ship |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002178992A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017154539A1 (en) * | 2016-03-09 | 2017-09-14 | 常石造船株式会社 | Ship stern structure |
-
2000
- 2000-12-11 JP JP2000375755A patent/JP2002178992A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017154539A1 (en) * | 2016-03-09 | 2017-09-14 | 常石造船株式会社 | Ship stern structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2530008B1 (en) | A vessel with an improved foreship arrangement | |
| JP2006321306A (en) | Ship with bow fin | |
| JP4297930B2 (en) | Stern duct | |
| JP2002178992A (en) | Rudder for ship | |
| JP2894923B2 (en) | Jet water inlet structure of water jet catamaran | |
| KR101654489B1 (en) | Ship | |
| JPH0558591U (en) | Bow structure of a large ship | |
| JP4274968B2 (en) | Ship with bow valve | |
| JP2598950Y2 (en) | Stern structure | |
| JPH0966885A (en) | Stem part structure with valve | |
| JP2572150Y2 (en) | Boat rudder | |
| JP2716658B2 (en) | Stern structure | |
| JPH0733071A (en) | Hull shape | |
| JPH04238788A (en) | Thrust generation mechanism for ship | |
| JPS607996Y2 (en) | Ship resistance reduction device | |
| JP2836738B2 (en) | High speed ship trim tub device | |
| JPH09193892A (en) | Stern fin | |
| JP3713542B2 (en) | Course stabilizer for pod propeller ships | |
| JPH0341997Y2 (en) | ||
| JP2012116401A (en) | Ship | |
| JPS60252094A (en) | Wave-break-reduction ship | |
| JPS6021351Y2 (en) | semi-submerged boat | |
| JP4654014B2 (en) | Large low-speed enlargement ship | |
| JP2024006713A (en) | Energy saving device for vessel | |
| JPS5923675Y2 (en) | bow hull shape |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20080304 |