JPH0156036B2 - - Google Patents
Info
- Publication number
- JPH0156036B2 JPH0156036B2 JP6578482A JP6578482A JPH0156036B2 JP H0156036 B2 JPH0156036 B2 JP H0156036B2 JP 6578482 A JP6578482 A JP 6578482A JP 6578482 A JP6578482 A JP 6578482A JP H0156036 B2 JPH0156036 B2 JP H0156036B2
- Authority
- JP
- Japan
- Prior art keywords
- rudder
- main
- auxiliary
- hull
- steering device
- 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.)
- Expired
Links
- 230000005484 gravity Effects 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
- B63H25/06—Steering by rudders
- B63H25/38—Rudders
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
Description
【発明の詳細な説明】
本発明は主舵によつて発生する船体傾斜モーメ
ントを減少させる補助舵を備えた舵に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rudder equipped with an auxiliary rudder that reduces the heeling moment generated by the main rudder.
従来、高速艇等の小型船舶の舵は、一般に第１
図の舵部の後方より見た横断面図に示すように、
船体１の下方でプロペラ回転面４の後方に舵３が
舵軸５により支持され設置されている。この舵３
は船体１内に設けられた操舵装置６により舵角が
設定され舵３が舵軸５を介して取られるようにな
つている。 Conventionally, the rudder of small vessels such as high-speed boats is generally the first
As shown in the cross-sectional view from the rear of the rudder in the figure,
A rudder 3 is supported by a rudder shaft 5 and installed below the hull 1 and behind the propeller rotating surface 4. This rudder 3
The rudder angle is set by a steering device 6 provided within the hull 1, and the rudder 3 is steered via a rudder shaft 5.
船体１が航走中、たとえば左旋回をしようとす
る場合、舵３を進行方向に向つてその左側面が前
方を向くように舵角をとり、舵３に発生する右方
向の直圧力によつて船尾を右に振り船首を左に向
け、旋回を行なうことが行なわれる。一般に高速
艇などの小型船舶ではその重心Ｇの位置が水面２
より上方にあるので、左旋回をすると遠心力FG
の作用で船体１はやゝ右舷へ傾斜する。しかし高
速で急舵角をとると船体に遠心力FGが発生する
前に舵に作用する右方向の直圧力FRのため、重
心Ｇ回りに左回転方向のモーメントが発生するた
め、左旋回をしても左舷側に傾斜し、場合によつ
ては左舷側に転覆をすることがある。この傾向は
旋回半径を小さくするため、舵３に作用する直圧
力FRを大きくしようとすればする程顕著になり、
特に旋回性能が重視される高速艇等においては特
に不都合となる。 When the hull 1 is sailing and intends to turn left, for example, the rudder 3 is turned in the direction of travel and the rudder angle is adjusted so that its left side faces forward. Then, the stern is turned to the right, the bow is turned to the left, and a turn is performed. In general, for small vessels such as high-speed boats, the center of gravity G is at the water surface 2.
Since it is located higher up, if you turn left, the centrifugal force F G
Due to this action, the hull 1 tilts slightly to starboard. However, when a sudden rudder angle is taken at high speed, a rightward direct pressure F R acts on the rudder before the centrifugal force F G is generated on the hull, and a counterclockwise moment is generated around the center of gravity G, resulting in a left turn. Even if you do so, the vessel may list to port and, in some cases, capsize to port. This tendency becomes more pronounced the more you try to increase the direct pressure F R acting on the rudder 3 in order to reduce the turning radius.
This is particularly inconvenient for high-speed boats and the like where turning performance is particularly important.
本発明は、上述の従来の舵の欠点を解消し、高
速艇などの小型船で大きな旋回力を発生させなが
ら、なお船体傾斜モーメントを小さく押えられる
舵を提供することを目的とする。 SUMMARY OF THE INVENTION An object of the present invention is to provide a rudder that eliminates the drawbacks of the conventional rudder described above and can generate a large turning force in a small boat such as a high-speed boat while still keeping the hull heeling moment small.
このため本発明の舵は、高速艇などの小型船舶
の舵において、主舵と、主舵を動かす為の主操舵
装置と、主舵の先端部に設けられ主舵より小さい
補助舵と、主舵と反対舵角に補助舵を動かす補助
操舵装置とを具え、主舵の操舵角によつて発生す
る船体傾斜モーメントを補助舵により減少させる
ようにしたことを特徴としている。 For this reason, the rudder of the present invention is a rudder for a small vessel such as a high-speed boat, and includes a main rudder, a main steering device for moving the main rudder, an auxiliary rudder installed at the tip of the main rudder and smaller than the main rudder, and a main rudder. and an auxiliary steering device that moves the auxiliary rudder to the opposite rudder angle, and is characterized in that the auxiliary rudder reduces the hull heeling moment generated by the steering angle of the main rudder.
以下、図面により本発明の実施例について説明
すると、第２図は本発明の一実施例としての舵を
説明するため舵部の後方より見た横断面図であつ
て、１は高速艇等の小型船舶の船体、２は水面、
３は船体の下方でプロペラ回転面４の後方に船体
１からの主舵軸５に支持された主舵である。主舵
３は従来の舵同様船体内に設けられた主操舵装置
６により操舵者の意志により主舵軸５を介して任
意に操舵されるようになつている。 Hereinafter, an embodiment of the present invention will be explained with reference to the drawings. Fig. 2 is a cross-sectional view of the rudder seen from the rear to explain a rudder as an embodiment of the present invention, and 1 is a cross-sectional view of the rudder as seen from the rear of the rudder as an embodiment of the present invention. The hull of the ship, 2 is the water surface,
Reference numeral 3 denotes a main rudder supported by a main rudder shaft 5 from the hull 1 behind the propeller rotating surface 4 below the hull. Like conventional rudders, the main rudder 3 is arbitrarily steered via a main rudder shaft 5 by a main steering device 6 provided within the hull according to the will of the helmsman.
７は主舵３の下端に設置された補助舵、８は主
舵軸内を貫通し補助舵７を支持もしくは舵角を取
るための補助舵軸、９は主操舵装置６とは別に作
動する補助操舵装置で主舵とは反対舵角に操舵さ
れる。この補助舵７の舵角は主舵３の舵角に対応
して自動的に操舵するようにしておいても良い。 7 is an auxiliary rudder installed at the lower end of the main rudder 3; 8 is an auxiliary rudder shaft that passes through the main rudder shaft and supports the auxiliary rudder 7 or takes the steering angle; 9 is operated separately from the main steering device 6 The auxiliary steering device steers the vehicle to a direction opposite to that of the main rudder. The steering angle of the auxiliary rudder 7 may be automatically steered in accordance with the rudder angle of the main rudder 3.
本実施例においても、旋回時に主舵３に作用す
る直圧力FR1は船体１を左旋回時左舷側へ傾斜さ
せるが、主舵３の先端に補助舵７を設けその舵角
を主舵３と逆方向に取るようにしたのでその直圧
力FR2が左舷側に作用するので、この直圧力FR2に
よる重心Ｇまわりのモーメントは船体を右舷側に
傾斜させようとするモーメントとなり、主舵３に
より発生する船体傾斜モーメントを軽減するよう
に働く。 In this embodiment as well, the direct force F R1 acting on the main rudder 3 during a turn causes the hull 1 to lean to the port side during a left turn. Since the direct pressure F R2 is applied in the opposite direction to the port side, the moment around the center of gravity G due to this direct pressure F R2 becomes a moment that tends to tilt the ship to starboard, and the main rudder 3 It works to reduce the hull heeling moment generated by
いま、船体１が遠心力FGにより傾斜する分を
除いて重心まわりの傾斜モーメントMGと、旋回
力に寄与する舵直圧力FRを考えると、
MG＝２｛l1FR1−（l1＋l2）FR2｝
FR＝２（FR1−FR2）
となる。これに対して補助舵７のない形式で主舵
３の直圧力作用点において上記FRと同じ直圧力
を発生する従来形式の舵を設置した場合の重心ま
わりの傾斜モーメントMG′はl1FRとなる。したが
つて同じ舵圧力FRを発生させる場合に本実施例
による傾斜モーメントMG′と従来方式による傾斜
モーメントMG′の差を△MGとすると
△MG＝MG′−MG＝2l2FR2
となり、従来方式に比べて旋回力を低下させるこ
となく傾斜モーメントを減少させることが可能と
なる。 Now, if we consider the heeling moment M G around the center of gravity excluding the heeling of the hull 1 due to the centrifugal force F G and the straight rudder pressure F R that contributes to the turning force, M G = 2 {l 1 F R1 − ( l 1 + l 2 ) F R2 } F R = 2 (F R1 − F R2 ). On the other hand, when a conventional type rudder without the auxiliary rudder 7 is installed that generates the same direct force as the above F R at the point of direct force application of the main rudder 3, the heeling moment M G ′ around the center of gravity is l 1 It becomes F R. Therefore, when the same rudder pressure F R is generated, if the difference between the heeling moment M G ′ according to this embodiment and the heeling moment M G ′ according to the conventional method is △M G , then △M G ＝M G ′−M G ＝ 2l 2 F R2 , making it possible to reduce the tilting moment without reducing the turning force compared to the conventional method.
以上、詳述したように本発明は、船舶の旋回力
は舵直圧力の総和で作用するが船体傾斜モーメン
トは重心と直圧力の作用点の距離により変化する
ことに着目し、特許請求の範囲に示す簡素な構
成、すなわち重心からの距離の大きい舵先端部に
船体傾斜モーメントを軽減する方向に力が作用す
る補助舵を設けるようにしたので、従来重心の高
い高速艇等の小型船舶が具有していた欠点すなわ
ち、旋回直後における船舶の旋回方向への転覆の
防止を舵効きの損失を増大することなく果すこと
ができる利点を有する。 As described in detail above, the present invention focuses on the fact that the turning force of a ship acts as the sum of the direct rudder pressure, but the hull heeling moment changes depending on the distance between the center of gravity and the point of application of the direct pressure, and claims The simple configuration shown in Fig. 1, in which an auxiliary rudder that applies a force in the direction of reducing the hull heeling moment, is provided at the tip of the rudder, which is located at a large distance from the center of gravity. It has the advantage of being able to prevent the ship from capsizing in the turning direction immediately after turning, without increasing the loss of rudder effectiveness.
第１図は従来の小型船舶の舵部を後方より見た
横断面図である。第２図は本発明の一実施例を説
明するため本発明の舵を設置した舵部を後方より
見た横断面図である。
１……船体、２……水面、３……主舵、４……
プロペラ回転面、５……主舵軸、６……主操舵装
置、７……補助舵、８……補助舵軸、９……補助
操舵装置。
FIG. 1 is a cross-sectional view of the rudder section of a conventional small boat, viewed from the rear. FIG. 2 is a cross-sectional view of a rudder section in which the rudder of the present invention is installed, viewed from the rear, for explaining one embodiment of the present invention. 1...Hull, 2...Water surface, 3...Main rudder, 4...
Propeller rotating surface, 5... Main rudder shaft, 6... Main steering device, 7... Auxiliary rudder, 8... Auxiliary rudder shaft, 9... Auxiliary steering device.
Claims (1)
と、主舵を動かす為の主操舵装置と、主舵の先端
部に設けられ主舵より小さい補助舵と、主舵と反
対舵角に補助舵を動かす補助操舵装置とを具え、
主舵の操舵角によつて発生する船体傾斜モーメン
トを補助舵により減少させるようにしたことを特
徴とする舵。1. In the rudder of a small vessel such as a high-speed boat, there is a main rudder, a main steering device for moving the main rudder, an auxiliary rudder installed at the tip of the main rudder that is smaller than the main rudder, and an auxiliary rudder at the opposite rudder angle from the main rudder. and an auxiliary steering device to move the
A rudder characterized in that an auxiliary rudder reduces the hull heeling moment generated by the steering angle of the main rudder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6578482A JPS58183387A (en) | 1982-04-20 | 1982-04-20 | Rudder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6578482A JPS58183387A (en) | 1982-04-20 | 1982-04-20 | Rudder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58183387A JPS58183387A (en) | 1983-10-26 |
| JPH0156036B2 true JPH0156036B2 (en) | 1989-11-28 |
Family
ID=13297001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6578482A Granted JPS58183387A (en) | 1982-04-20 | 1982-04-20 | Rudder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58183387A (en) |
-
1982
- 1982-04-20 JP JP6578482A patent/JPS58183387A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58183387A (en) | 1983-10-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20080053356A1 (en) | Steering and propulsion arrangement for ship | |
| US3765356A (en) | Hydrofoil watercraft steering and stabilizing mechanism | |
| US8740660B2 (en) | Pod drive installation and hull configuration for a marine vessel | |
| EP0558580B1 (en) | Steering system for planing watercraft | |
| JPH0156036B2 (en) | ||
| US5029548A (en) | High-speed craft | |
| JPH0132640Y2 (en) | ||
| JPS643718B2 (en) | ||
| JP2008230379A (en) | Method and device for steering uniaxial two-rudder vessel | |
| US6461206B2 (en) | Impact rudder | |
| JP6841540B1 (en) | Thruster placement stern structure | |
| WO2023131689A1 (en) | Steering-support system for marine vessels | |
| JPS6339479B2 (en) | ||
| JPS61150898A (en) | Vessel maneuvering device | |
| JPS63192688A (en) | Skeg device | |
| JPS63312298A (en) | Steering gear | |
| JPH0669798B2 (en) | Front propulsion ship | |
| US3509844A (en) | Power steering for ships and boats | |
| JPS5943353B2 (en) | Two-axle shallow water boat | |
| KR0161319B1 (en) | Rudder structure of a ship | |
| JP2001239992A (en) | Enlarged ship | |
| JPH05338582A (en) | Drift prevention device for hull | |
| EP0094944A4 (en) | Steering vessels. | |
| JPH06122398A (en) | Auxiliary steering device for vessel | |
| JPS6231677B2 (en) |