JPH0536720B2 - - Google Patents
Info
- Publication number
- JPH0536720B2 JPH0536720B2 JP21587284A JP21587284A JPH0536720B2 JP H0536720 B2 JPH0536720 B2 JP H0536720B2 JP 21587284 A JP21587284 A JP 21587284A JP 21587284 A JP21587284 A JP 21587284A JP H0536720 B2 JPH0536720 B2 JP H0536720B2
- Authority
- JP
- Japan
- Prior art keywords
- underwater vehicle
- outer panel
- porous
- present
- water
- 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 - Lifetime
Links
Landscapes
- Glass Compositions (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、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.
従来の水中航走体においては、第４図に示すよ
うに、その外板１が滑面状に形成され、航走中の
水による抵抗ができるだけ軽減されるようになつ
ている。
In a conventional underwater vehicle, as shown in FIG. 4, the outer plate 1 is formed into a smooth surface so that the resistance caused by water during navigation is reduced as much as possible.
しかしながら、上述のような従来の水中航走体
では、外板１をどのように形成しても、この外板
１に沿う水の流れによる摩擦抵抗は常に作用する
ため、水中航走体に作用する抵抗を外板１におけ
る摩擦抵抗以下に抑えることはできないという問
題点がある。
However, in the conventional underwater vehicle as described above, no matter how the outer panel 1 is formed, frictional resistance due to the flow of water along the outer panel 1 always acts on the underwater vehicle. There is a problem in that it is not possible to suppress the frictional resistance of the outer panel 1 to less than the frictional resistance of the outer panel 1.
本発明は、このような問題点の解決をはかろう
とするもので、航走中に外板に作用する摩擦抵抗
を軽減できるようにして、推進性能の向上をはか
つた、水中航走体を提供することを目的とする。 The present invention aims to solve these problems, and provides an underwater vehicle that improves propulsion performance by reducing the frictional resistance that acts on the outer shell during navigation. The purpose is to provide
このため本発明の水中航走体は、前部に、その
外周を一様に覆う多孔質の外板部分をそなえ、上
記多孔質の外板部分から微細な気泡を外水中へ放
出すべく、同外板部分の外側の水圧よりも高い圧
力に調整される気体室が、上記外板部分の内側面
に接して形成されたことを特徴としている。
For this reason, the underwater vehicle of the present invention is provided with a porous outer plate part that uniformly covers the outer circumference of the underwater vehicle at the front part, and in order to release fine air bubbles from the porous outer plate part into the outside water, It is characterized in that a gas chamber, which is adjusted to a pressure higher than the water pressure outside the outer panel, is formed in contact with the inner surface of the outer panel.
上述の本発明の水中航走体では、その航走中
に、前部の外周を一様に覆う多孔質の外板部分か
ら、その内側の気体室の高圧気体が無数の微細気
泡となつて放出され、この微細な気泡により、水
中航走体周囲がむらなく覆われるので、同水中航
走体の外板に沿う水の流れの境界層の状態が一様
に変化して、外板に作用する摩擦抵抗が軽減され
る。
In the above-mentioned underwater vehicle of the present invention, while the vehicle is traveling, high-pressure gas in the gas chamber inside the porous outer panel portion that uniformly covers the outer circumference of the front portion is formed into countless microscopic bubbles. These microscopic bubbles evenly cover the area around the underwater vehicle, causing the state of the boundary layer of the water flow along the outer surface of the underwater vehicle to change uniformly, causing the outer surface of the underwater vehicle to become uniformly covered. The applied frictional resistance is reduced.
以下、図面により本発明の実施例について説明
すると、第１，２図は本発明の第１実施例として
の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−矢視断面図であり、
第３図は本発明の第２実施例としての水中航走体
を示す側面図である。
Hereinafter, embodiments of the present invention will be explained with reference to the drawings. Figures 1 and 2 show an underwater vehicle as a first embodiment of the present invention. Figure 1 is a side view thereof, and Figure 2 is a side view thereof. 1 is a sectional view taken along the - arrow in FIG.
FIG. 3 is a side view showing an underwater vehicle as a second embodiment of the present invention.
本発明の第１実施例では、第１図に示すよう
に、水中航走体の前部に、外板１と面一な帯状の
外板部分２が、外周を一様に覆うようにそなえら
れており、この外板部分２を焼結金属、多孔質プ
ラスチツク、多孔性セラミツク等の多孔質の材料
により形成する。 In the first embodiment of the present invention, as shown in FIG. 1, a band-shaped outer plate portion 2 flush with the outer plate 1 is provided at the front of the underwater vehicle so as to uniformly cover the outer circumference. The outer plate portion 2 is made of a porous material such as sintered metal, porous plastic, or porous ceramic.
また、第２図に示すように、多孔質の外板部分
２は、支持部３を介して内側の殻４に固定され、
この殻４の外周面と外板部分２の内周面との間に
気体室５が形成されている。 Further, as shown in FIG. 2, the porous outer panel part 2 is fixed to the inner shell 4 via the support part 3,
A gas chamber 5 is formed between the outer peripheral surface of the shell 4 and the inner peripheral surface of the outer plate portion 2.
そして、同気体室５には、圧縮空気ボンベ６が
バルブ７および導管８を介して接続されていて、
この圧縮空気ボンベ６からバルブ７および導管８
を通して、外板部分２の外側の水圧よりも高い圧
力を有する空気が供給されるようになつている。 A compressed air cylinder 6 is connected to the gas chamber 5 via a valve 7 and a conduit 8.
From this compressed air cylinder 6 a valve 7 and a conduit 8
Through these, air is supplied having a pressure higher than the water pressure outside the skin part 2.
本発明の第１実施例としての水中航走体は上述
のごとく構成されているので、この水中航走体の
航走中には、圧縮空気ボンベ６から気体室５に供
給された空気が、多孔質の外板部分２から無数の
微細な気泡となつてむらなく放出される。 Since the underwater vehicle according to the first embodiment of the present invention is constructed as described above, while the underwater vehicle is traveling, the air supplied from the compressed air cylinder 6 to the gas chamber 5 is Numerous fine bubbles are evenly released from the porous outer panel portion 2.
このとき、気泡放出量はバルブ７で制御され、
数ミクロン程度の気泡が常時放出されるように調
整する。 At this time, the amount of bubbles released is controlled by the valve 7,
Adjust so that bubbles of several microns are constantly released.
このようにして放出された気泡により水中航走
体の外板１が一様に覆われるので、微細気泡が、
外板１に沿う水の流れの境界層内で流体の密度変
化、すなわち密度の極端な低下を招いて、境界層
の状態を変化させ、あたかも空気中と同じような
境界層構造を実現する。 Since the outer plate 1 of the underwater vehicle is uniformly covered with the air bubbles released in this way, the fine air bubbles
A fluid density change, that is, an extreme decrease in density is caused in the boundary layer of the water flow along the outer panel 1, thereby changing the state of the boundary layer and realizing a boundary layer structure similar to that in the air.
したがつて、外板１に作用する摩擦抵抗が大幅
に減少し、水中航走体の推進性能が高められるの
である。 Therefore, the frictional resistance acting on the outer plate 1 is significantly reduced, and the propulsion performance of the underwater vehicle is improved.
次に第３図により本発明の第２実施例としての
水中航走体について説明すると、この第２実施例
の水中航走体も上述の第１実施例とほぼ同様に構
成されるが、第２実施例では、水中航走体の前頭
部の全体が多孔質の外板部分２′により形成され
ている。 Next, an underwater vehicle as a second embodiment of the present invention will be explained with reference to FIG. In a second embodiment, the entire frontal area of the underwater vehicle is formed by a porous skin part 2'.
上述の構成により、本発明の第２実施例におい
ても第１実施例と同様の作用効果が得られる。 With the above-described configuration, the same effects as in the first embodiment can be obtained in the second embodiment of the present invention.
以上詳述したように、本発明の水中航走体によ
れば、前部の外周を一様に覆う多孔質の外板部分
をそなえ、上記多孔質の外板部分から微細な気泡
を外水中へ放出すべく、同外板部分の外側の水圧
よりも高い圧力に調整される気体室が、上記外板
部分の内側面に接して形成されるという極めて簡
素な構成で、航走中に水中航走体の外板に作用す
る摩擦抵抗が、同外板を一様にむら無く覆う無数
の微細気泡によつて十分に軽減されるようにな
り、これにより水中航走体の推進性能が大幅に高
められるのである。
As described in detail above, the underwater vehicle of the present invention is provided with a porous outer panel portion that uniformly covers the outer periphery of the front portion, and allows fine air bubbles to be released into the water from the porous outer panel portion. It has an extremely simple structure in which a gas chamber is formed in contact with the inner surface of the skin part, which is adjusted to a higher pressure than the water pressure outside the skin part, in order to release water to the water during cruising. The frictional resistance that acts on the outer shell of an underwater vehicle is now sufficiently reduced by the countless microscopic bubbles that evenly cover the outer panel, which greatly improves the propulsion performance of underwater vehicles. It is raised to a higher level.
第１，２図は本発明の第１実施例としての水中
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−矢視断面図であり、第３図は
本発明の第２実施例としての水中航走体を示す側
面図であり、第４図は従来の水中航走体を示す側
面図である。
１……水中航走体の外板、２，２′……多孔質
の外板部分、３……支持部、４……殻、５……気
体室、６……圧縮空気ボンベ、７……バルブ、８
……導管。
1 and 2 show an underwater vehicle as a first embodiment of the present invention, and FIG. 1 is a side view thereof, and FIG.
The figure is a sectional view taken along the - arrow in FIG. 1, FIG. 3 is a side view showing an underwater vehicle as a second embodiment of the present invention, and FIG. 4 is a side view showing a conventional underwater vehicle. FIG. DESCRIPTION OF SYMBOLS 1... Outer plate of underwater vehicle, 2, 2'... Porous outer plate part, 3... Support part, 4... Shell, 5... Gas chamber, 6... Compressed air cylinder, 7... ...Valve, 8
……conduit.
Claims (1)
多孔質の外板部分をそなえ、上記多孔質の外板部
分から微細な気泡を外水中へ放出すべく、同外板
部分の外側の水圧よりも高い圧力に調整される気
体室が、上記外板部分の内側面に接して形成され
たことを特徴とする、水中航走体。1 The front part of the underwater vehicle is equipped with a porous outer panel part that uniformly covers its outer circumference, and a porous outer panel part is provided in order to release microscopic air bubbles from the porous outer panel part into the outside water. An underwater vehicle, characterized in that a gas chamber whose pressure is adjusted to a higher pressure than the water pressure outside is formed in contact with the inner surface of the outer plate portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21587284A JPS6193400A (en) | 1984-10-12 | 1984-10-12 | Underwater sailing body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21587284A JPS6193400A (en) | 1984-10-12 | 1984-10-12 | Underwater sailing body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6193400A JPS6193400A (en) | 1986-05-12 |
| JPH0536720B2 true JPH0536720B2 (en) | 1993-05-31 |
Family
ID=16679658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21587284A Granted JPS6193400A (en) | 1984-10-12 | 1984-10-12 | Underwater sailing body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6193400A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH064335Y2 (en) * | 1986-12-11 | 1994-02-02 | 株式会社リコー | Camera photometric circuit |
-
1984
- 1984-10-12 JP JP21587284A patent/JPS6193400A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6193400A (en) | 1986-05-12 |
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