JPH0535583U - Hydrofoil of a composite-supported ship - Google Patents
Hydrofoil of a composite-supported shipInfo
- Publication number
- JPH0535583U JPH0535583U JP8552591U JP8552591U JPH0535583U JP H0535583 U JPH0535583 U JP H0535583U JP 8552591 U JP8552591 U JP 8552591U JP 8552591 U JP8552591 U JP 8552591U JP H0535583 U JPH0535583 U JP H0535583U
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- hull
- wing
- hydrofoil
- lower hull
- lift
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Abstract
(57)【要約】
【目的】 抵抗を小さく抑えながら翼走に必要な揚力を
従来より小さい翼面積で得ることのできる複合支持型船
舶の水中翼を提供する。
【構成】 上部船体と下部船体２とからなる船体を有
し、翼走時には下部船体２の浮力と下部船体２に突設し
た水中翼４の揚力の両方で船体を支持する複合支持型の
船舶において、下部船体２付近の該水中翼４の翼面積を
小さくし、下部船体２から離れた外側の翼面積を大きく
形成して全体が末広がり状の翼とする。そして、水中翼
４の強度面を考慮して翼端付近をサイドストラットで上
部船体に支持する。これにより、抵抗を小さく抑えつつ
従来より小さい翼面積で所定の揚力が得られる。
(57) [Summary] [Purpose] To provide a hydrofoil of a composite-supported ship capable of obtaining lift necessary for wing flight with a smaller wing area than conventional ones while suppressing drag. [Composition] A composite support type ship having a hull composed of an upper hull and a lower hull 2 and supporting the hull by both the buoyancy of the lower hull 2 and the lift of a hydrofoil 4 projecting from the lower hull 2 when the wing is running. In, the wing area of the hydrofoil 4 near the lower hull 2 is reduced, and the wing area on the outer side away from the lower hull 2 is increased to form a divergent wing. Then, in consideration of the strength of the hydrofoil 4, the vicinity of the wing tip is supported by the upper hull by side struts. As a result, a predetermined lift can be obtained with a blade area smaller than that of the conventional one while suppressing the resistance to a small value.
Description
【０００１】[0001]
本考案は、複合支持型船舶における水中翼の改良にかかり、詳しくは、従来に 比し小さい翼面積で所定の翼揚力を得ることのできる複合支持型船舶における水 中翼に関する。 The present invention relates to improvement of a hydrofoil in a composite-support type ship, and more particularly to a hydrofoil in a composite-support type ship capable of obtaining a predetermined wing lift with a smaller blade area than the conventional one.
【０００２】[0002]
最近我が国でも短距離間の旅客輸送用として水中翼の揚力で船の全重量を支え てウォータジェット推進により超高速で航走する小型旅客船が登場して、旅客分 野における高速化のニーズに応えている。 Recently in Japan as well, a small passenger ship that can support ultra-high speeds by water jet propulsion by supporting the total weight of the ship with the lift of hydrofoils for short-distance passenger transport has responded to the need for higher speeds in the passenger area. ing.
【０００３】 一方、貨物専用輸送の分野でも、製品の多品種少量生産化、生産拠点の海外展 開など生産システムの変化に伴って、大型かつ超高速化の気運が急速に高まって 来ている。この場合、上述した超高速旅客船と同様な形式で超高速貨物船の大型 化を図ると、巨大な水中翼が必要となり、船体抵抗が増大するために経済的に不 利といわれている。On the other hand, also in the field of freight-only transportation, the tendency toward large size and ultra-high speed is rapidly increasing due to changes in the production system such as the production of small quantities of various products and the overseas expansion of production bases. . In this case, enlarging the ultra-high-speed cargo ship in the same manner as the above-mentioned ultra-high-speed passenger ship requires huge hydrofoils, which is economically disadvantageous because the hull resistance increases.
【０００４】 そこで、図４(a) の側面図、同(b) の正面図に示すような船体を上部船体１と 下部船体２とで構成し、この両船体間の前後にストラット３を固定して設け、更 にこの下部船体２に水中翼４を突設した複合支持型の船舶が提案されている。こ の種船舶に関する先行技術としては特開平３−３２９９４号公報等がある。Therefore, a hull as shown in the side view of FIG. 4 (a) and the front view of FIG. 4 (b) is composed of an upper hull 1 and a lower hull 2, and struts 3 are fixed between the front and the rear of the hull. In addition, a composite support type ship in which hydrofoil 4 is projected on the lower hull 2 is proposed. As prior art relating to this type of ship, there is JP-A-3-32994.
【０００５】 かかる複合支持型船舶においては、図４(a) (b) に示すように低速時には上部 船体１の下部が水中に没するｄ1 の吃水で航走する艇走状態と、高速になると水 中翼４の揚力により上部船体１が水面上に浮上し、ｄ2 の吃水で航走する翼走状 態とがあり、翼走状態では翼揚力と下部船体２の浮力とで船全体の重量を支持し ている。[0005] In such composite-supported vessels, FIG. 4 and (a) is in low speed as shown in (b) run boat bottom of the upper hull 1 is run Wataru in Kissui of d 1 submerged in the water state, the high-speed becomes the upper hull 1 is floating on the water surface by the lift of the water in the wing 4, there are wings run like on purpose to run Wataru in Kissui of d 2, the entire ship buoyancy wing lift and lower the hull 2 in the wings run state Support the weight of.
【０００６】 従来の水中翼は、図５(a) の如く下部船体２に固定される翼の付け根付近４ａ の弦長が大きく、翼端付近４ｂの弦長が小さい、全体として先細りのテーパ翼に 形成されている（特開昭６１−５４３８２号公報等参照）。As shown in FIG. 5 (a), the conventional hydrofoil has a large chord length near the base 4a of the wing fixed to the lower hull 2 and a small chord length near the wing tip 4b, and is a tapered taper wing as a whole. (See Japanese Patent Application Laid-Open No. 61-54382, etc.).
【０００７】[0007]
図５(a) の下部船体付近の平面図、同(b) の下部船体付近の側面図に示す如く 、翼幅方向の水の流れを観察すると、下部船体２の近くは造波干渉により強い下 向きの流れが存在し、下部船体２から離れた翼端付近の外側位置ではほぼ平行（ 水平）な流れとなっている。Ｗは下部船体２から生起する波を示す。従って、下 部船体２付近では迎角が小さくなるから揚力が発生しにくいが、下部船体２から 離れた翼端付近では迎角も大きくなるため揚力が発生しやすい。ところが、従来 の翼は、揚力が発生しにくい下部船体２近くの翼面積が大きく、大きな揚力が発 生する下部船体２から離れた翼端付近の翼面積が小さい先細りのテーパ形状をし ている。そのため、この形状の翼で所定の揚力を得るためには全体として大きな 翼面積を必要とする。しかし、これは一方では船体抵抗の増加を招来する結果と なり、推進性能上好ましくない。 As shown in the plan view of the lower hull of Fig. 5 (a) and the side view of the lower hull of Fig. 5 (b), when the water flow in the spanwise direction is observed, the vicinity of the lower hull 2 is stronger due to wave-making interference. There is a downward flow, and the flow is almost parallel (horizontal) at the outer position near the wing tip away from the lower hull 2. W indicates a wave generated from the lower hull 2. Therefore, lift angle is less likely to occur in the vicinity of the lower hull 2 because the angle of attack is smaller, but lift angle is likely to be generated in the vicinity of the wing tip away from the lower hull 2 because the angle of attack is larger. However, the conventional wing has a tapered blade shape in which the wing area near the lower hull 2 in which lift is difficult to generate is large and the wing area near the wing tip away from the lower hull 2 in which large lift is generated is small. . Therefore, a large blade area is required as a whole to obtain a predetermined lift force with this shape of blade. However, on the other hand, this results in an increase in hull resistance, which is not desirable for propulsion performance.
【０００８】 本考案の目的は、抵抗を小さく抑えながら翼走に必要な揚力を従来より小さい 翼面積で得ることのできる複合支持型船舶の水中翼を提供することにある。An object of the present invention is to provide a hydrofoil of a composite-supported ship capable of obtaining a lift required for wing flight with a smaller wing area than conventional ones while suppressing the resistance to be small.
【０００９】[0009]
上記目的達成のため、本考案は、上部船体と下部船体とからなる船体を有し、 翼走時には下部船体の浮力と下部船体に突設した水中翼の揚力の両方で船体を支 持する複合支持型の船舶において、下部船体付近の該水中翼の翼面積を小さく、 下部船体から離れた外側の翼面積を大きく形成した全体が末広がり状の翼とした ことを特徴とする複合支持型船舶の水中翼である。 To achieve the above object, the present invention has a hull consisting of an upper hull and a lower hull, and supports a hull with both the buoyancy of the lower hull and the lift of a hydrofoil protruding from the lower hull during wing flight. In a supported vessel, the hydrofoil near the lower hull has a small wing area, and the outer wing area away from the lower hull is large to form a divergent wing. It is a hydrofoil.
【００１０】[0010]
上記構成においては、没水体である下部船体付近の流れの特性を考慮して所定 の揚力を得る上で好ましい水中翼の形状が実現される。すなわち、翼端付近では 迎角が大きく且つ翼面積も大きいため、大きな揚力が発生する。一方、下部船体 の影響の強いところでは迎角が小さく且つ翼面積が小さいこともあって発生する 揚力自体は小さい（従来はこの部分の翼面積が大きいにもかかわらず発生する揚 力は小さい）が、抵抗は小さく抑えられる。この結果、翼全体として見た場合に は、抵抗を小さく抑えながら従来のものより小さい翼面積で所定の揚力が得られ る。 In the above configuration, a hydrofoil shape that is preferable for obtaining a predetermined lift force in consideration of the flow characteristics near the lower hull that is the submersible body is realized. That is, a large lift is generated near the tip of the wing because the angle of attack is large and the wing area is large. On the other hand, where the lower hull is strongly affected, the lift itself is small because the angle of attack is small and the wing area is small (the conventional lift is small despite the large wing area). However, the resistance is kept small. As a result, when looking at the blade as a whole, a given lift can be obtained with a blade area smaller than that of the conventional one while suppressing the resistance to be small.
【００１１】[0011]
以下、本考案の実施例を図面を参照しながら説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
【００１２】 図１は本考案にかかる複合支持型船舶の概略側面図、図２はその横断面図であ る。FIG. 1 is a schematic side view of a composite-support type ship according to the present invention, and FIG. 2 is a cross-sectional view thereof.
【００１３】 これらの図において、１は上部船体、２は下部船体、３はセンタストラット、 ４は水中翼、５はサイドストラット、６はウォータジェット噴出口、７は操縦室 等が配置されている上部構造物、Ｆは船首部、Ａは船尾部を示す。In these drawings, 1 is an upper hull, 2 is a lower hull, 3 is a center strut, 4 is a hydrofoil, 5 is a side strut, 6 is a water jet spout, and 7 is a cockpit. Upper structure, F indicates the bow, and A indicates the stern.
【００１４】 図示するように複合支持型船舶は、甲板上広い積載スペース８を有する上部船 体１と、この船底中央部に前後に垂下された断面翼状のセンタストラット３と、 この前後のセンタストラット３の下端部に設けられた上部船体１とほぼ同長の魚 雷状の下部船体２と、この下部船体２のストラットとほぼ同じ位置において両側 に略水平に突設した後述する水中翼４から主として構成される。As shown in the figure, the composite support type ship includes an upper hull 1 having a large loading space 8 on a deck, a center strut 3 having a wing-shaped cross section that hangs back and forth at the center of the bottom of the ship, and front and rear center struts. From the torpedo-shaped lower hull 2 of the same length as the upper hull 1 provided at the lower end of 3, and the hydrofoil 4 which will be described later protruding substantially horizontally on both sides at substantially the same position as the struts of the lower hull 2. Mainly composed.
【００１５】 これらの水中翼４の翼端部付近は、強度面を考慮して上部船体１から垂下した サイドストラット５により支持されている。なお、水中翼４には船体の姿勢制御 等のための複数のフラップ（図示せず）がそれぞれ付設されている。航走中には 後部のセンタストラット３の下方の下部船体２に設けた吸入口（図示せず）から ウォータジェットポンプにより水を吸引して船尾端の噴出口６より高速で噴射し て船体が前進推力を得るようになっている。The vicinity of the wing tips of these hydrofoils 4 is supported by side struts 5 hanging from the upper hull 1 in consideration of strength. The hydrofoil 4 is provided with a plurality of flaps (not shown) for controlling the attitude of the hull. During navigation, water is sucked by a water jet pump from a suction port (not shown) provided in the lower hull 2 below the rear center strut 3 and jetted at high speed from the jet port 6 at the stern end, It is designed to obtain forward thrust.
【００１６】 かかる複合支持型船舶の前進航走状態には、前述した通り、港湾内や離着岸時 等の低速時には水中翼の揚力が小さくなるので上部船体１が着水して航走する艇 走状態と、高速走行時には前後の翼に発生する揚力と下部船体２の浮力とで船の 全重量を支持して上部船体１を水面ＷＬ上に浮上させて航走する翼走状態とがあ る。In the forward traveling state of such a composite-supported ship, as described above, the lifting force of the hydrofoil becomes small at low speeds such as in a harbor or at the time of berthing or berthing. There are a running state and a wing running state in which the upper hull 1 is floated above the water surface WL to support the total weight of the ship by the lift generated on the front and rear wings at high speed and the buoyancy of the lower hull 2. It
【００１７】 艇走状態から翼走状態に移行する段階では、船体を浮上するに必要な揚力が前 後の水中翼４から得られなければならないが、図５(b) の如く下部船体２の造波 干渉より下部船体２付近には下向きの強い流れが存在し、ここでは迎角が小さく なって揚力が発生しにくいことを考慮する必要がある。At the stage of transition from the boat running state to the wing running state, the lift required to levitate the hull must be obtained from the front and rear hydrofoils 4, but as shown in FIG. It is necessary to consider that there is a strong downward flow near the lower hull 2 due to wave-making interference, and here the angle of attack is small and lift is unlikely to occur.
【００１８】 そこで、本考案では、図３に示すように下部船体２付近、つまり翼の付け根付 近４ａの翼面積が小さく、下部船体２から離れた外側の翼端付近４ｂでは翼面積 が大きくなるよう、全体が末広がり状の翼に形成してある。即ち、翼の下部船体 ２の近傍の翼弦長は小さく、翼端４ｃに向かって漸進的に弦長が大きくなってお り、図５(a) に示す従来の先細りのテーパ翼とは逆のテーパ翼（つまり、翼面積 の配分が従来と全く逆の水中翼）を形成している。この場合、強度的な観点から 水中翼４の翼端４ｃをサイドストラット５で上部船体１に支持するのがよい。Therefore, in the present invention, as shown in FIG. 3, the wing area is small near the lower hull 2, that is, near the root 4a of the wing, and near the outer wing tip 4b away from the lower hull 2, the wing area is large. As a result, the entire wing is formed into a flared end. That is, the wing chord length near the lower hull 2 of the wing is small, and the chord length gradually increases toward the wing tip 4c, which is the opposite of the conventional tapered wing shown in Fig. 5 (a). It forms a tapered blade (that is, a hydrofoil in which the blade area distribution is completely opposite to the conventional one). In this case, from the viewpoint of strength, it is preferable to support the wing tip 4c of the hydrofoil 4 on the upper hull 1 by the side strut 5.
【００１９】 ここで、揚力を一定として従来のものと比較すると、本考案では下部船体２の 影響の強い翼の付け根付近４ａの翼面積を小さくしているため、この部分での抵 抗が減少する（従来は翼面積が大きいにもかかわらずこの部分に発生する揚力は 相対的に小さく、抵抗が大きい）。一方、下部船体２から離れた翼端付近４ｂは 、付け根付近４ａに比べて迎角が大きくなり且つ翼面積を大きくしているために この部分においては従来よりも大きな揚力が発生する。従って、全体として見た 場合には、抵抗を小さく抑えつつ、従来のものより小さい翼面積で所定の揚力が 得られるようになる。Here, when the lift is kept constant and compared with the conventional one, in the present invention, the wing area near the root 4a of the wing of the lower hull 2, which has a strong influence, is reduced, so the resistance in this part is reduced. (Although the blade area is large in the past, the lift generated in this part is relatively small and the resistance is large). On the other hand, near the wing tip 4b away from the lower hull 2, the angle of attack is larger and the wing area is larger than in the vicinity of the root 4a, so a larger lift is generated in this portion than in the conventional case. Therefore, when viewed as a whole, it is possible to obtain a predetermined lift with a blade area smaller than that of the conventional one while suppressing the resistance to be small.
【００２０】 なお、２つ以上の翼を前後に列設する場合には、下部船体の造波干渉に加え、 いわゆるダウンウォッシュ現象によって前翼の後方で下向きの流れが増長される 傾向になるから、所定の揚力を発生させる上では、図３の如く前翼を大きく（か つ、この翼を上記のように末広がりの翼とし）、後翼を小さく形成することが望 ましい。When two or more wings are arranged in front and rear, the downward flow tends to be increased behind the front wing due to so-called downwash phenomenon in addition to the wave-making interference of the lower hull. In order to generate a predetermined lift, it is desirable to make the front wing large (and the wing widened as described above) and the rear wing small as shown in FIG.
【００２１】[0021]
以上説明したように、本考案では、揚力発生用の水中翼を、下部船体付近の翼 の付け根付近の翼面積を小さく、かつ、下部船体から離れた翼端付近では翼面積 を大きく形成したので、従来の水中翼と揚力を一定として比較した場合には、抵 抗の減少が図られる。 As described above, in the present invention, the hydrofoil for generating lift is formed with a small blade area near the root of the blade near the lower hull and a large blade area near the blade tip away from the lower hull. When comparing the conventional hydrofoil with constant lift, the resistance is reduced.
【００２２】 よって、本考案にかかる水中翼を採用した場合には、抵抗を小さく抑えつつ、 翼走時に必要な揚力を従来より小さい翼面積で得ることが可能となる。Therefore, when the hydrofoil according to the present invention is adopted, it is possible to obtain a lift force required for running the wing with a blade area smaller than that of the conventional one while suppressing the resistance to be small.
【図１】本考案の適用例である複合支持型船舶の側面図
である。FIG. 1 is a side view of a composite support type ship to which the present invention is applied.
【図２】同横断面図である。FIG. 2 is a transverse sectional view of the same.
【図３】本考案の水中翼を含む下部船体の平面図であ
る。FIG. 3 is a plan view of a lower hull including the hydrofoil of the present invention.
【図４】(a) 、(b) は、複合支持型船舶における航走状
態を示すための側面図と正面図である。4 (a) and 4 (b) are a side view and a front view showing a sailing state of the composite support type ship.
【図５】(a) 、(b) は、下部船体付近に生起する下向き
の流れを説明するための下部船体付近の平面図と側面図
である。5 (a) and 5 (b) are a plan view and a side view of the lower hull for explaining a downward flow occurring near the lower hull.
１…上部船体 ２…下部船体 ３…センタストラット ４…水中翼 ４ａ…翼の付け根付近 ４ｂ…翼端付近 ４ｃ…翼端 ５…サイドストラット 1 ... Upper hull 2 ... Lower hull 3 ... Center strut 4 ... Hydrofoil 4a ... Near wing root 4b ... Near wing tip 4c ... Wing tip 5 ... Side strut
Claims (1)
し、翼走時には下部船体の浮力と下部船体に突設した水
中翼の揚力の両方で船体を支持する複合支持型の船舶に
おいて、下部船体近くの該水中翼の翼面積を小さく、下
部船体から離れた外側の翼面積を大きく形成して全体が
末広がり状の翼としたことを特徴とする複合支持型船舶
の水中翼。1. A composite support type ship having a hull composed of an upper hull and a lower hull, and supporting the hull by both buoyancy of the lower hull and lift of a hydrofoil protruding from the lower hull during wing running, A hydrofoil for a composite-supported ship, characterized in that the hydrofoil near the lower hull has a small wing area, and the outer wing area away from the lower hull is made large to form a divergent wing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991085525U JPH085918Y2 (en) | 1991-10-21 | 1991-10-21 | Hydrofoil of a composite-supported ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991085525U JPH085918Y2 (en) | 1991-10-21 | 1991-10-21 | Hydrofoil of a composite-supported ship |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0535583U true JPH0535583U (en) | 1993-05-14 |
| JPH085918Y2 JPH085918Y2 (en) | 1996-02-21 |
Family
ID=13861317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991085525U Expired - Fee Related JPH085918Y2 (en) | 1991-10-21 | 1991-10-21 | Hydrofoil of a composite-supported ship |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH085918Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5128917A (en) * | 1974-09-02 | 1976-03-11 | Toyota Motor Co Ltd | SHOGEKIENERUGIIKYUSHUSOCHI |
-
1991
- 1991-10-21 JP JP1991085525U patent/JPH085918Y2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5128917A (en) * | 1974-09-02 | 1976-03-11 | Toyota Motor Co Ltd | SHOGEKIENERUGIIKYUSHUSOCHI |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH085918Y2 (en) | 1996-02-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |