JPS6123511Y2 - - Google Patents

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Publication number
JPS6123511Y2
JPS6123511Y2 JP1985027332U JP2733285U JPS6123511Y2 JP S6123511 Y2 JPS6123511 Y2 JP S6123511Y2 JP 1985027332 U JP1985027332 U JP 1985027332U JP 2733285 U JP2733285 U JP 2733285U JP S6123511 Y2 JPS6123511 Y2 JP S6123511Y2
Authority
JP
Japan
Prior art keywords
hull
hulls
semi
lower hull
multihull
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
Application number
JP1985027332U
Other languages
Japanese (ja)
Other versions
JPS60163192U (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP2733285U priority Critical patent/JPS60163192U/en
Publication of JPS60163192U publication Critical patent/JPS60163192U/en
Application granted granted Critical
Publication of JPS6123511Y2 publication Critical patent/JPS6123511Y2/ja
Granted legal-status Critical Current

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  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Description

【考案の詳細な説明】 〔考案の技術分野〕 本考案は半没水型多胴船に関するものである。[Detailed explanation of the idea] [Technical field of invention] This invention relates to a semi-submersible multihull.

〔従来技術〕[Prior art]

この種の半没水型多胴船は原理的に高速性能や
耐航性能の優れた船舶となり得る可能性を有する
ものであり、且つ甲板面積も広く取れるので荷役
効率や作業効率を向上できるなど、将来の海上輸
送や海洋開発の分野において大いに利用できるも
のであるが、推進性能、操縦性、進路安定性、動
揺性能および高速時の安定性など改良すべき点が
少なくない。
In principle, this type of semi-submersible multihull has the potential to become a ship with excellent high-speed performance and seaworthiness, and it also has a large deck area, which can improve cargo handling efficiency and work efficiency. Although it can be widely used in the fields of future maritime transportation and ocean development, there are many points that need improvement, such as propulsion performance, maneuverability, course stability, oscillation performance, and stability at high speeds.

〔考案の目的〕[Purpose of invention]

本考案は半没水型多胴船における上記性能の向
上を図り、実用に充分供し得るようにすることを
目的とするものである。
The purpose of the present invention is to improve the above-mentioned performance of a semi-submersible multihull so that it can be put to practical use.

〔考案の構成〕[Structure of the idea]

すなわち、本考案の半没水型多胴船は、アツパ
ーハルと、その下方に所定の間隔を設けて配置し
た複数のロワーハルとを、夫々、ストラツトによ
り連結した半没水型多胴船において、各後部スト
ラツトの後端を前記ロワーハルの後端より後方に
延設し、且つ前記ロワーハルを偏平にすると共
に、前記ロワーハルを、その最大幅部がロワーハ
ル後部にあり、かつロワーハルの前端から最大幅
部までの幅が後方に向つて次第に幅広く成したこ
とを特徴とするものである。
That is, the semi-submersible multihull of the present invention is a semi-submersible multihull in which an upper hull and a plurality of lower hulls arranged below the upper hull at predetermined intervals are connected by struts. The rear end of the rear strut extends rearward from the rear end of the lower hull, and the lower hull is flattened, and the lower hull has its maximum width at the rear of the lower hull and extends from the front end of the lower hull to the maximum width. It is characterized by its width becoming gradually wider towards the rear.

〔実施例〕〔Example〕

次に、図面により本考案の実施例について説明
する。
Next, embodiments of the present invention will be described with reference to the drawings.

まず、第1図〜第4図は第1実施例を示すもの
であるが、第1図および第2図に示すように、ア
ツパーハル1の下方には2個のロワーハル2,2
がこのアツパーハル1と所定の間隔を設けて平行
に配置されている。また、これら2個のロワーハ
ル2,2間も適宜間隔を設けて平行に配置されて
いる。このように配置されたロワーハル2,2は
前記アツパーハル1とそれぞれ水平断面が流線形
状のストラツト3,4(第3図参照)により連結
されている。
First, FIGS. 1 to 4 show the first embodiment, and as shown in FIGS. 1 and 2, below the upper hull 1 are two lower hulls 2 and 2.
is arranged parallel to this upper hull 1 with a predetermined distance therebetween. Further, these two lower hulls 2, 2 are also arranged in parallel with an appropriate interval between them. The lower hulls 2, 2 arranged in this manner are connected to the upper hull 1 by struts 3, 4 (see FIG. 3) each having a streamlined horizontal cross section.

このストラツト3,4は前記ロワーハル2,2
の前端部と後端部に、それぞれ、配設されてい
る。そして、後部のストラツト4は舵5を取り付
けるため、第1図に示す如く、その後端が前記ロ
ワーハル2,2の後端よりも後方に突出した形状
になつている。このため、ストラツト3,4の吃
水面積によつて定まる浮面心Oは後部のストラツ
ト4寄りになる。
These struts 3 and 4 are connected to the lower hulls 2 and 2.
are arranged at the front end and the rear end, respectively. In order to attach the rudder 5 to the rear strut 4, the rear end thereof is shaped to protrude rearward beyond the rear ends of the lower hulls 2, 2, as shown in FIG. Therefore, the center of floating surface O, which is determined by the catchment area of the struts 3 and 4, is closer to the strut 4 at the rear.

ところで、一般に、半没水型船が航行すると、
次第に横断面積が減少するロワーハル2,2の後
端部において水面の低下が生ずる。この現象はロ
ワーハル2,2の後部形状、没水深度および船速
などによつて影響される。すなわち、ロワーハル
2,2の後部形状の下方への曲率が大きくなる
か、没水深度が小さくなるか、または船速が大き
くなるほど水面低下が大きくなる。この水面低下
が大きいと推進性能が悪化し、また、プロペラが
水面上に露出し運航に支障を来すことになる。
By the way, generally speaking, when a semi-submerged ship sails,
A drop in the water level occurs at the rear ends of the lower hulls 2, 2, where the cross-sectional area gradually decreases. This phenomenon is influenced by the rear shape of the lower hulls 2, 2, submerged depth, ship speed, etc. That is, the lower the water level becomes larger as the downward curvature of the rear shape of the lower hulls 2, 2 becomes larger, the submerged depth becomes smaller, or the ship speed becomes larger. If this water level drop is large, propulsion performance will deteriorate, and the propeller will be exposed above the water surface, posing a problem to navigation.

然るに、上記の如く、後部のストラツト4の後
端をロワーハル2,2の後端より後方に延設する
ことにより前記水面低下が防止され得ることは驚
異である。
However, it is surprising that the water level drop can be prevented by extending the rear ends of the rear struts 4 rearward from the rear ends of the lower hulls 2, 2, as described above.

また、各ストラツト3,4は、第2図に示す如
く、吃水線より上方において上方に向かつて次第
に拡開する拡開部を備えており、この拡開部の上
にアツパーハル1が固着されている。この拡開部
は各ストラツト3,4のほぼ全長にわたつて設け
られている。一般に、かかる半没水型多胴船にお
いてはストラツト3,4とアツパーハル1の接合
部に大きな波浪曲げモーメントを受けるが、前記
拡開部をストラツト3,4とアツパーハル1の接
合部の剛性を高めるばかりでなく、船体が大きく
横傾斜して吃水線が拡開部に至つたときに横復元
力を増加させ横安定性を増す機能を有する。
Furthermore, as shown in FIG. 2, each strut 3, 4 is provided with an expanded portion that gradually expands upward above the water line, and the upper hull 1 is fixed onto this expanded portion. There is. This expanded portion is provided over substantially the entire length of each strut 3,4. Generally, in such a semi-submersible multihull, the joints between the struts 3, 4 and the upper hull 1 are subjected to a large wave bending moment, but the expanded portion is used to increase the rigidity of the joints between the struts 3, 4 and the upper hull 1. In addition, it has the function of increasing lateral restoring force and increasing lateral stability when the hull is significantly heeled and the water line reaches the widening part.

更に、この実施例では、第3図に示す如く、こ
れらのロワーハル2,2がそれらの前端から後方
に向つて次第に幅が広くなるように形成され、そ
れらの後端部付近で最大幅になるように構成され
ている。また、第1図に示す如く、これらロワー
ハル2,2を側面視すれば、それらの上下端面が
前後端部を除いてほぼ平行に形成されている。
Further, in this embodiment, as shown in FIG. 3, these lower hulls 2, 2 are formed so that their widths gradually become wider from their front ends toward the rear, and reach their maximum width near their rear ends. It is configured as follows. Further, as shown in FIG. 1, when these lower hulls 2, 2 are viewed from the side, their upper and lower end surfaces are formed substantially parallel except for the front and rear ends.

したがつて、各ロワーハル2の後部の幅方向断
面A2における幅DB2と厚みDH2の比DB2/DH2
が、前部の幅方向断面A1の幅DB1と厚みDH1の比
DB1/DH1よりも大きく設定されている。
Therefore, the ratio of the width DB 2 to the thickness DH 2 at the rear width direction cross section A 2 of each lower hull 2 is DB 2 / DH 2
is the ratio of the width DB 1 and the thickness DH 1 of the front width direction cross section A 1
It is set larger than DB 1 /DH 1 .

さらに、例えば第3図において、これらロワー
ハル2,2の最大幅付近の長手方向断面は、第4
図に示すように翼形に形成されている。
Furthermore, for example, in FIG. 3, the longitudinal cross section of the lower hulls 2, 2 near the maximum width is
As shown in the figure, it is shaped like an airfoil.

いま、上記のようなロワーハル2,2を持つ半
没水型多胴船を航行させると、この船が高速にな
るにしたがつて力の中心が船尾方向に移動し、船
尾を下げるべく姿勢を変化させようとする。
Now, when a semi-submersible multihull with lower hulls 2 and 2 as described above is sailed, as the ship increases in speed, the center of force moves toward the stern, and the attitude of the ship changes to lower the stern. try to change it.

しかし、この船は第4図に示すロワーハル2,
2の翼形の作用により高速になるにつれて上向き
の力(第4図の矢印方向)がロワーハル2,2の
後部に働くので、この揚力が船尾を下げる力を相
殺して船体の姿勢を安定させる。
However, this ship has lower hull 2 shown in Figure 4.
As the speed increases due to the action of the airfoils 2 and 2, an upward force (in the direction of the arrow in Figure 4) acts on the rear of the lower hulls 2 and 2, so this lifting force offsets the force that lowers the stern and stabilizes the hull's attitude. .

また、ロワーハル2,2の最大幅をそれらの後
端部付近にしたことにより浮力中心Bはロワーハ
ル2,2の後部に移動するので、第1図に示すよ
うに浮面心Oと浮力中心Bを一致させることがで
きる。
In addition, by setting the maximum width of the lower hulls 2, 2 near their rear ends, the buoyancy center B moves to the rear of the lower hulls 2, 2, so the buoyancy center O and the buoyancy center B are changed as shown in Figure 1. Can be matched.

その結果、浮面心Oと浮力中心Bにおいてそれ
ぞれ対向して働く力の位置が同一垂線上にあるた
めに、それらの力によつて船体には回転モーメン
トが作用しないので上下揺れによる縦揺れ、ある
いは縦揺れによる上下揺れの誘起が生ずることが
なく、船体の姿勢はより安定するようになる。
As a result, since the positions of the opposing forces acting on the center of buoyancy O and the center of buoyancy B are on the same perpendicular line, no rotational moment is applied to the hull due to these forces, resulting in pitching due to up-and-down rocking, or There is no vertical motion induced by pitching, and the attitude of the ship becomes more stable.

一方、第4図〜第8図は、第2実施例を示して
いるが、この実施例も第1実施例と同様にロワー
ハル2a,2aは、第7図に示すように、それら
の前端から後方に向つて次第に幅が広なるように
形成され、それらの後端部付近で最大幅になるよ
うに構成されている。
On the other hand, FIGS. 4 to 8 show the second embodiment, and as in the first embodiment, the lower hulls 2a, 2a are separated from their front ends as shown in FIG. They are formed so that their width gradually increases toward the rear, and are configured to have a maximum width near their rear ends.

またこれらロワーハル2a,2aは、第5図に
図示した如く、それらの上下端面が、前部から後
部に向うにしたがつて次第に狭まくなるように構
成されている。
Further, as shown in FIG. 5, these lower hulls 2a, 2a are configured such that their upper and lower end surfaces become gradually narrower from the front toward the rear.

これを第7図によりさらに詳しく述べれば、こ
れらロワーハル2a,2aの後部の幅方向断面
A2における幅DB2と厚みDH2の比DB2/DH2が前
述の第1実施例のロワーハル2,2の後部の幅方
向断面の場合よりもさらに大きく設定されてい
る。すなわち、ロワーハル2a,2aの後部がさ
らに扁平になつている。
To describe this in more detail with reference to FIG.
The ratio DB 2 /DH 2 of the width DB 2 and the thickness DH 2 at A 2 is set to be larger than that of the width direction cross section of the rear portion of the lower hulls 2, 2 of the first embodiment. That is, the rear portions of the lower hulls 2a, 2a are further flattened.

前記の各ロワーハル2aの最大幅付近の長手方
向断面は、第8図に示すように、前述した第1実
施例よりも薄い翼形形状をしているから水の抵抗
が第1実施例よりも小さい利点がある。その他の
作用効果は第1実施例と同様である。
As shown in FIG. 8, the longitudinal section near the maximum width of each of the lower hulls 2a has an airfoil shape that is thinner than that of the first embodiment, so the water resistance is higher than that of the first embodiment. There is a small advantage. Other effects are the same as in the first embodiment.

なお、ロワーハルの最大幅の位置は、その後端
から、その全長の1/4位のところが最良である。
The best position for the maximum width of the lower hull is about 1/4 of its total length from the rear end.

〔考案の効果〕[Effect of idea]

上記のように、本考案は、アツパーハルと、そ
の下方に所定の間隔を設けて配置した複数のロワ
ーハルとを、夫々、ストラツトにより連結した半
没水型多胴船において、各後部ストラツトの後端
を前記ロワーハルの後端より後方に延設し、且つ
前記ロワーハルを偏平にすると共に、前記ロワー
ハルをその前端から後端に向つて次第に幅広く成
したので、次のように推進性能、操縦性、進路安
定性、動揺性能および高速時の安定性の向上など
が向上し、充分、実用に供することができるよう
になる。
As described above, the present invention provides a semi-submersible multihull in which an upper hull and a plurality of lower hulls arranged below the upper hull at predetermined intervals are connected by struts, and the rear end of each rear strut is The lower hull is extended rearward from the rear end of the lower hull, and the lower hull is made flat, and the lower hull is gradually made wider from the front end to the rear end, so that the propulsive performance, maneuverability, and course are improved as follows. Stability, oscillation performance, and stability at high speeds have been improved, making it suitable for practical use.

すなわち、 この船が高速で航行し、それが高速になるに
つれて力の中心が船尾方向に移動し、船尾を下
げようとしても、その力に相当する揚力をこの
ロワーハルの後部により得ることができるので
船の姿勢を安定させることができる。
In other words, when this ship is sailing at high speed, and as it increases in speed, the center of force moves toward the stern, and even if the stern tries to lower, lift force equivalent to that force can be obtained from the rear of the lower hull. It can stabilize the ship's attitude.

また、ロワーハルの最大幅が後部に位置する
ため、スクリユー軸等の配置や組立て、あるい
は保守が容易になるのみならず、2軸にするこ
とも可能となる。
Furthermore, since the maximum width of the lower hull is located at the rear, it is not only easier to arrange, assemble, and maintain the screw shaft, etc., but also it is possible to use two shafts.

また、船の長手方向の浮面心が、ストラツト
の構造上船の後部にあつても、その浮力中心は
後方に移動するので、上下揺れによる縦揺れの
誘因や縦揺れによる上下揺れの誘因を防止で
き、それらの運動の減衰力を大きくすることが
できる。その結果、船体を高速航行時でもより
安定させることができる。
In addition, even though the center of buoyancy in the longitudinal direction of the ship is located at the rear of the ship due to the structure of the struts, the center of buoyancy moves to the rear, which prevents pitching caused by up-and-down rocking, and prevention of up-and-down rocking caused by pitching. It is possible to increase the damping force of those movements. As a result, the hull can be made more stable even when sailing at high speed.

更に、各後部ストラツトの後端を前記ロワー
ハルの後端より後方に延設するため、船尾にお
ける水面低下を防止でき、推進性能の低下を防
ぐとともに、プロペラが水面上に露出すること
が防止できる。
Furthermore, since the rear end of each rear strut extends rearward from the rear end of the lower hull, it is possible to prevent the water level from lowering at the stern, thereby preventing a decrease in propulsion performance and preventing the propeller from being exposed above the water surface.

更にまた、ロワーハルの後部幅を広くするこ
とにより揚力を得るので、フインを付設して揚
力を得る従来例に比して抵抗の増大を防止でき
る。
Furthermore, since lifting force is obtained by widening the rear width of the lower hull, an increase in resistance can be prevented compared to the conventional example in which lifting force is obtained by attaching fins.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本発明半没水型多胴船の実施例であり、
第1図はその全体側面図、第2図はそれを半断面
した正面図、第3図はロワーハルの平面図、第4
図は第3図−線の断面図、第5図は他の実施
例を示す全体側面図、第6図はそれを半断面した
正面図、第7図はそのロワーハルの平面図、第8
図は、第7図−線の断面図、第9図はスクリ
ユー軸を2軸にした状態を示すロワーハルの一部
平面図である。 1……アツパーハル、2……ロワーハル、3,
4……ストラツト。
The drawing shows an embodiment of the semi-submersible multihull of the present invention,
Figure 1 is its overall side view, Figure 2 is its front view in half section, Figure 3 is a plan view of the lower hull, Figure 4
The figures are a sectional view taken along the line of FIG. 3, FIG. 5 is an overall side view showing another embodiment, FIG.
The figure is a sectional view taken along the line of FIG. 7, and FIG. 9 is a partial plan view of the lower hull showing a state in which the screw shafts are two axes. 1...Atsupahal, 2...Lower hull, 3,
4...Strut.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] アツパーハルと、その下方に所定の間隔を設け
て配置した複数のロワーハルとを、夫々、ストラ
ツトにより連結した半没水型多胴船において、各
後部ストラツトの後端を前記ロワーハルの後端よ
り後方に延設し、且つ前記ロワーハルを偏平にす
ると共に、前記ロワーハルを、その最大幅部がロ
ワーハル後部にあり、かつロワーハルの前端から
最大幅部までの幅が後方に向つて次第に幅広く成
した半没水型多胴船。
In a semi-submersible multihull in which an upper hull and a plurality of lower hulls arranged below the upper hull are connected by struts, the rear end of each rear strut is positioned rearward from the rear end of the lower hull. A semi-submerged structure in which the lower hull is extended, and the lower hull is flattened, and the width of the lower hull is located at the rear of the lower hull, and the width from the front end of the lower hull to the maximum width gradually becomes wider toward the rear. type multihull.
JP2733285U 1985-02-28 1985-02-28 semi-submersible multihull Granted JPS60163192U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2733285U JPS60163192U (en) 1985-02-28 1985-02-28 semi-submersible multihull

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2733285U JPS60163192U (en) 1985-02-28 1985-02-28 semi-submersible multihull

Publications (2)

Publication Number Publication Date
JPS60163192U JPS60163192U (en) 1985-10-30
JPS6123511Y2 true JPS6123511Y2 (en) 1986-07-14

Family

ID=30524187

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2733285U Granted JPS60163192U (en) 1985-02-28 1985-02-28 semi-submersible multihull

Country Status (1)

Country Link
JP (1) JPS60163192U (en)

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
AIAA PAPER NO.72-603=1972 *
AIAA PAPER NO.72-604=1972 *
INTERNATIONAL SEMINER ON WAVE RESISTANCE=1976 *

Also Published As

Publication number Publication date
JPS60163192U (en) 1985-10-30

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