JPH0412395Y2 - - Google Patents
Info
- Publication number
- JPH0412395Y2 JPH0412395Y2 JP4527685U JP4527685U JPH0412395Y2 JP H0412395 Y2 JPH0412395 Y2 JP H0412395Y2 JP 4527685 U JP4527685 U JP 4527685U JP 4527685 U JP4527685 U JP 4527685U JP H0412395 Y2 JPH0412395 Y2 JP H0412395Y2
- Authority
- JP
- Japan
- Prior art keywords
- underwater vehicle
- thin plate
- frictional resistance
- plate member
- reducing
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
Landscapes
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、水中航走体に関し、特にその外周に
摩擦抵抗を軽減させるための手段を施した、摩擦
抵抗軽減式水中航走体に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an underwater vehicle, and more particularly to a frictional resistance-reducing underwater vehicle that has a means for reducing frictional resistance on its outer periphery.
一般に、第４図に示すように、水中航走体１の
航走時には、その外板表面２の周りに乱流境界層
３が発達し、水中航走体の外板表面２に沿つて、
摩擦応力１３が作用する。
Generally, as shown in FIG. 4, when the underwater vehicle 1 is traveling, a turbulent boundary layer 3 develops around the outer surface 2 of the underwater vehicle 1, and a turbulent boundary layer 3 develops along the outer surface 2 of the underwater vehicle.
Frictional stress 13 acts.
そして、この摩擦応力１３を水中航走体１の外
板表面２の全体にわつたて積分したものが摩擦抵
抗となる。 Then, the frictional resistance is obtained by vertically integrating this frictional stress 13 over the entire outer plate surface 2 of the underwater vehicle 1.
なお、水中航走体１の後部には、同水中航走体
１の推進のためのスクリユープロペラ５と、舵４
とが配設されている。 In addition, at the rear of the underwater vehicle 1, there is a screw propeller 5 for propulsion of the underwater vehicle 1, and a rudder 4.
and are provided.
前述の摩擦応力１３は、境界層内の乱れの構造
を変えることによつて軽減できるが、実際にこの
ようにして水中航走体１の摩擦抵抗を軽減する手
段は、従来開発されていない。
Although the aforementioned frictional stress 13 can be reduced by changing the structure of turbulence in the boundary layer, no means for actually reducing the frictional resistance of the underwater vehicle 1 in this way has been developed so far.
本考案は、上述のような考察に基づき、外板表
面周りの乱流境界層において乱れの構造を変える
ことにより、外板表面に作用する摩擦抵抗を軽減
できるようにした、摩擦抵抗軽減式水中航走体を
提供することを目的とする。 Based on the above-mentioned considerations, the present invention is a friction-reducing water flow system that reduces the frictional resistance acting on the outer skin surface by changing the turbulence structure in the turbulent boundary layer around the outer skin surface. The purpose is to provide a mid-range vehicle.
このため本考案の摩擦抵抗軽減式水中航走体
は、水中航走体の外面と微小間隔をへだてて、同
水中航走体に支柱を介し装着された薄板部材をそ
なえ、同薄板部材の板面が上記水中航走体の外面
にほぼ沿うように配置されるとともに、同薄板部
材の長手方向が上記水中航走体の外面に沿う水の
流れ方向とほぼ直角をなすように配置されたこと
を特徴としている。
For this reason, the frictional resistance reducing underwater vehicle of the present invention is provided with a thin plate member attached to the underwater vehicle via a strut at a minute distance from the outer surface of the underwater vehicle, and a plate of the thin plate member is provided. The thin plate member is arranged so that its surface substantially follows the outer surface of the underwater vehicle, and the longitudinal direction of the thin plate member is substantially perpendicular to the direction of water flow along the outer surface of the underwater vehicle. It is characterized by
上述の本考案の摩擦抵抗軽減式水中航走体で
は、水中航走体の航走時に外面に乱流境界層が発
達して摩擦抵抗が作用する場合、薄板部材が水中
航走体の外面と微小間隔をへだてて、同水中航走
体に支柱を介して装着されているので、乱流境界
層内の渦流が微細化して乱流が軽減され、これに
より摩擦抵抗が大幅に軽減される。
In the above-mentioned underwater vehicle with reduced frictional resistance of the present invention, when a turbulent boundary layer develops on the outer surface of the underwater vehicle and frictional resistance acts while the underwater vehicle is traveling, the thin plate member does not touch the outer surface of the underwater vehicle. Since it is attached to the underwater vehicle via struts with a small distance between them, the eddy flow within the turbulent boundary layer becomes finer, reducing turbulence and thereby significantly reducing frictional resistance.
以下、図面により本考案の一実施例としての摩
擦抵抗軽減式水中航走体について説明すると、第
１図はその側面図、第２図は第１図の−線に
沿う断面図、第３図は第１図の−線に沿う断
面図である。
Below, a frictional resistance reducing underwater vehicle as an embodiment of the present invention will be explained with reference to the drawings. Fig. 1 is a side view thereof, Fig. 2 is a sectional view taken along the - line in Fig. 1, and Fig. 3 is a sectional view taken along the - line in Fig. 1. 2 is a sectional view taken along the line - in FIG. 1. FIG.
第１〜３図に示すように、後部にスクリユープ
ロペラ５および舵４をそなえた水中航走体１の外
板表面２には、２枚の薄板部材６ａ，６ｂが外板
表面２と支柱８ａ，８ｂ，８ｃ，８ｄを介し微小
間隔をへだてて、平行に配設されている。 As shown in FIGS. 1 to 3, two thin plate members 6a and 6b are attached to the outer plate surface 2 of the underwater vehicle 1, which is equipped with a screw propeller 5 and a rudder 4 at the rear. They are arranged parallel to each other with minute intervals between them via 8a, 8b, 8c, and 8d.
また、薄板部材６ａ，６ｂは、第２図に示すよ
うにその長手方向が外板表面２に沿う水の流れ７
方向とほぼ直角を成すようにリング状に配置され
る。このとき、薄板部材６ａ，６ｂが配置される
部分で、水中航走体１の周囲の水の流れ７は、水
中航走体１の中心軸線とほぼ平行になる。 In addition, the thin plate members 6a and 6b have a water flow 7 whose longitudinal direction is along the outer plate surface 2, as shown in FIG.
They are arranged in a ring shape almost perpendicular to the direction. At this time, the flow 7 of water around the underwater vehicle 1 becomes approximately parallel to the central axis of the underwater vehicle 1 in the portion where the thin plate members 6a and 6b are arranged.
なお、本考案の一実施例としての摩擦抵抗軽減
式水中航走体は、第１図に示すように２枚の薄板
部材６ａ，６ｂをそなえているが、この薄板部材
の配置枚数は２枚に限らない。 The frictional resistance reducing underwater vehicle as an embodiment of the present invention has two thin plate members 6a and 6b as shown in FIG. Not limited to.
本考案の摩擦抵抗軽減式水中航走体は、上述の
ように構成されているので、水中航走体１の航走
時に外板表面２に乱流境界層が発達して摩擦抵抗
が作用する場合、水中航走体１の航走時に外板表
面２に乱流境界層が発達して摩擦抵抗が作用する
場合、水中航走体１の外板表面２の近傍（境界層
の外端近傍）に薄板部材６ａ，６ｂが設置されて
いるので、境界層内の渦流が微細化して乱流が軽
減される。 Since the frictional resistance reducing underwater vehicle of the present invention is configured as described above, a turbulent boundary layer develops on the outer plate surface 2 when the underwater vehicle 1 is traveling, and frictional resistance acts. In this case, when a turbulent boundary layer develops on the outer plate surface 2 of the underwater vehicle 1 and frictional resistance acts when the underwater vehicle 1 is traveling, the area near the outer plate surface 2 of the underwater vehicle 1 (near the outer edge of the boundary layer) ), the thin plate members 6a and 6b are installed in the boundary layer, so that the eddy flow in the boundary layer becomes finer and the turbulence is reduced.
これにより、外板表面２に作用する摩擦抵抗を
大幅に軽減できるので、水中航走体１の推進性能
を向上させ、航走時の燃費の軽減をはかることが
できる。 As a result, the frictional resistance acting on the outer plate surface 2 can be significantly reduced, so that the propulsion performance of the underwater vehicle 1 can be improved and fuel consumption during navigation can be reduced.
以上詳述したように、本考案の摩擦抵抗軽減式
水中航走体によれば、水中航走体の外面と微小間
隔をへだてて、同水中航走体に支柱を介して装着
された薄板部材をそなえ、同薄板部材の板面が上
記水中航走体の外面にほぼ沿うように配置される
とともに、同薄板部材の長手方向が上記水中航走
体の外面に沿う水の流れ方向とほぼ直角をなすよ
うに配置されるという極めて簡素な構造で、水中
航走体の外板表面に作用する摩擦抵抗が大幅に軽
減されるようになり、これにより航走時の燃費の
節減をはかれるとともに、推進性能を向上させう
る利点がある。
As described in detail above, according to the frictional resistance reducing underwater vehicle of the present invention, the thin plate member is attached to the underwater vehicle via the support with a minute distance from the outer surface of the underwater vehicle. The thin plate member is arranged so that the plate surface thereof substantially follows the outer surface of the underwater vehicle, and the longitudinal direction of the thin plate member is substantially perpendicular to the direction of water flow along the outer surface of the underwater vehicle. With its extremely simple structure, which is arranged in such a way as to form a shape, the frictional resistance acting on the outer surface of the underwater vehicle can be significantly reduced, thereby reducing fuel consumption during navigation. This has the advantage of improving propulsion performance.
第１〜３図は本考案の一実施例としての摩擦抵
抗軽減式水中航走体を示すもので、第１図はその
側面図、第２図は第１図の−線に沿う断面
図、第３図は第１図の−線に沿う断面図であ
り、第４図は従来の水中航走体の側面図である。
１……水中航走体、２……外板表面、４……
舵、５……スクリユープロペラ、６ａ，６ｂ……
薄板部材、７……水の流れ、８ａ，８ｂ，８ｃ，
８ｄ……支柱。
1 to 3 show a frictional resistance reducing underwater vehicle as an embodiment of the present invention, FIG. 1 is a side view thereof, FIG. 2 is a sectional view taken along the line - in FIG. 1, FIG. 3 is a sectional view taken along the - line in FIG. 1, and FIG. 4 is a side view of a conventional underwater vehicle. 1... Underwater vehicle, 2... Outer plate surface, 4...
Rudder, 5... Screw propeller, 6a, 6b...
Thin plate member, 7...Water flow, 8a, 8b, 8c,
8d... Support.
Claims (1)
中航走体に支柱を介して装着された薄板部材をそ
なえ、同薄板部材の板面が上記水中航走体の外面
にほぼ沿うように配置されるとともに、同薄板部
材の長手方向が上記水中航走体の外面に沿う水の
流れ方向とほぼ直角をなすように配置されたこと
を特徴とする、摩擦抵抗軽減式水中航走体。 A thin plate member is attached to the underwater vehicle through a support at a small distance from the outer surface of the underwater vehicle, and the plate surface of the thin plate member is arranged to substantially align with the outer surface of the underwater vehicle. An underwater vehicle with reduced frictional resistance, characterized in that the longitudinal direction of the thin plate member is substantially perpendicular to the flow direction of water along the outer surface of the underwater vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4527685U JPH0412395Y2 (en) | 1985-03-28 | 1985-03-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4527685U JPH0412395Y2 (en) | 1985-03-28 | 1985-03-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61161600U JPS61161600U (en) | 1986-10-06 |
| JPH0412395Y2 true JPH0412395Y2 (en) | 1992-03-25 |
Family
ID=30558638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4527685U Expired JPH0412395Y2 (en) | 1985-03-28 | 1985-03-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0412395Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101222864B1 (en) * | 2010-09-24 | 2013-01-18 | 국방과학연구소 | Propulsive Equipment and Missile Having The Same |
| WO2019187052A1 (en) * | 2018-03-30 | 2019-10-03 | 本田技研工業株式会社 | Recoil starter |
-
1985
- 1985-03-28 JP JP4527685U patent/JPH0412395Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61161600U (en) | 1986-10-06 |
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