JPS6015517B2 - test propeller - Google Patents
test propellerInfo
- Publication number
- JPS6015517B2 JPS6015517B2 JP53089089A JP8908978A JPS6015517B2 JP S6015517 B2 JPS6015517 B2 JP S6015517B2 JP 53089089 A JP53089089 A JP 53089089A JP 8908978 A JP8908978 A JP 8908978A JP S6015517 B2 JPS6015517 B2 JP S6015517B2
- Authority
- JP
- Japan
- Prior art keywords
- propeller
- test
- cavitation
- transparent member
- hole
- 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
Landscapes
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Description
【発明の詳細な説明】
本発明は水槽試験におけるプロペラに生じるキャビテー
ションを観察する為などに用いる試験用のプロペラに関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a test propeller used for observing cavitation occurring in a propeller in an aquarium test.
第１図、第２図に従来のプロペラを用いての試験を示す
。Figures 1 and 2 show tests using conventional propellers.
０１は模型のプロペラであり、プロペラボス０３に固定
されたとえば空洞水槽内に入れられる。01 is a model propeller, which is fixed to a propeller boss 03 and placed in, for example, a hollow water tank.
高速の水流にこれら部材が接するとキヤビテーション０
．２が上記プロペラ０１によって生じる。従来のプロペ
ラはたとえ模型と言えども高速の水流にさらされる為に
合成樹脂などで作ることはできず、一般にアルミニウム
や真ちゆうなどの金属が用いられる。従って当然なこと
ながら不透明であり、そのため上記プロペラ０１の表面
上に生じるキャビテーション０２の観測は、該プロペラ
０１の片側の面からしか行なうことが出来なかった。Cavitation occurs when these parts come into contact with high-speed water flow.
．． 2 is generated by the propeller 01. Conventional propellers cannot be made of synthetic resin, even if they are models, because they are exposed to high-speed water currents; metals such as aluminum and brass are generally used. Therefore, it is naturally opaque, and therefore the cavitation 02 occurring on the surface of the propeller 01 could only be observed from one side of the propeller 01.
本発明はこの欠点を排除するものであって、キャビテー
ション試験に供せられる試験用プロペラであって、翼の
厚さ方向に設けられた貫通孔と、同貫通孔に補填された
透明な部材とを有することを特徴としる試験用プロペラ
を提供するものである。The present invention eliminates this drawback, and provides a test propeller for cavitation testing, which includes a through hole provided in the thickness direction of the blade, and a transparent member filled in the through hole. The present invention provides a test propeller characterized by having:
以下本発明を第３図ないし第５図に示す一実施例につい
て説明する。The present invention will be described below with reference to an embodiment shown in FIGS. 3 to 5.
１はプロペラであってボス３に取り付けられている。1 is a propeller, which is attached to a boss 3.
あらかじめ予備試験によってプロペラ１におけるキャピ
テーションの発生状況を見て、観測したい場所を決定す
る。The occurrence of capitation in the propeller 1 is checked in advance through a preliminary test, and the location to be observed is determined.
適宜手段によりプロペラ１のその部分へプロペラ１の翼
の厚さ方向に貫通孔をあげ、透明な部材４をはめ込む。
はめ込み方としては、第５図に示すように二つ割りの透
明な部材４をプロベラーの両面から挿入し、中間部で接
合しても良いし、溶融したプラスチックを貫通孔に流し
て成形してもよい。しかる後、プロペラ１の表面で透明
な部材４との接合部が滑らかになるように、かつプロペ
ラ１の原形と同一になるよう補修する。A through hole is made in that part of the propeller 1 in the thickness direction of the blade of the propeller 1 by an appropriate means, and a transparent member 4 is fitted therein.
As shown in Fig. 5, the two halves of the transparent member 4 may be inserted from both sides of the prober and joined at the middle, or molten plastic may be poured into the through hole and molded. . Thereafter, the surface of the propeller 1 is repaired so that the joint with the transparent member 4 is smooth and has the same shape as the original shape of the propeller 1.
さて、本実施例の試験用プロペラを従来と同様空洞水槽
などに入れて試験を行なうとキャビテーション２が同様
に発生する。Now, when the test propeller of this example is put into a hollow water tank or the like and tested, cavitation 2 occurs in the same way as in the conventional case.
キャビテーション２の観測はプロペラ１の必要な一部を
透明な部材４で補修してあるのでプロペラ１の両側（第
４図の上方および下方から）可能となる。Cavitation 2 can be observed from both sides of the propeller 1 (from above and below in FIG. 4) because a necessary part of the propeller 1 is repaired with a transparent member 4.
従ってキャビテーション２の挙動が従来のプロペラを用
いていた場合より広角度にとらえられ、キヤビテーショ
ン２によるプロペラ材料の損傷の問題などの研究に役立
てることができる。Therefore, the behavior of cavitation 2 can be observed from a wider angle than when using a conventional propeller, which can be useful for research on problems such as damage to propeller materials caused by cavitation 2.
なお、上記実施例ではプロペラ１の中央部に貫通孔を配
設したが、プロペラ１の織部を見たい場合には、その端
部に切り欠きを設け、もちろん透明な部材で補修するこ
とが出釆る。In the above embodiment, a through hole was provided in the center of the propeller 1, but if you want to see the weave of the propeller 1, you can of course provide a notch at the end and repair it with a transparent member. Settle.
第１図は従来のプロペラを用いた試験の説明図、第２図
は第１図の０ーロ断面図、第３図は本発明の一実施例の
プロペラを用いた試験の説明図、第４図は第３図のＷ一
Ｗ断面図、第５図は透明な都材の接合説明図である。
１：プロペラ、２：キヤビテーション、４：透明な部材
。
孫ｒ図
孫２図
兼３図
鯖４図
努５図Fig. 1 is an explanatory diagram of a test using a conventional propeller, Fig. 2 is a 0-Ro cross-sectional view of Fig. 1, and Fig. 3 is an explanatory diagram of a test using a propeller according to an embodiment of the present invention. FIG. 4 is a W-W sectional view of FIG. 3, and FIG. 5 is an explanatory diagram of joining of transparent backing materials. 1: Propeller, 2: Cavitation, 4: Transparent member. Grandson r figure Grandson 2 figure and 3 figure Saba 4 figure Tsutomu 5 figure
Claims (1)
であつて、翼の厚さ方向に設けられた貫通孔と、同貫通
孔に補填された透明な部材とを有することを特徴とする
試験用プロペラ。1. A test propeller to be subjected to a cavitation test, characterized by having a through hole provided in the thickness direction of a blade, and a transparent member filled in the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53089089A JPS6015517B2 (en) | 1978-07-21 | 1978-07-21 | test propeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53089089A JPS6015517B2 (en) | 1978-07-21 | 1978-07-21 | test propeller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5517621A JPS5517621A (en) | 1980-02-07 |
| JPS6015517B2 true JPS6015517B2 (en) | 1985-04-19 |
Family
ID=13961139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53089089A Expired JPS6015517B2 (en) | 1978-07-21 | 1978-07-21 | test propeller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6015517B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4631267A (en) * | 1985-03-18 | 1986-12-23 | Corning Glass Works | Method of producing high-strength high surface area catalyst supports |
| US5206202A (en) * | 1991-07-25 | 1993-04-27 | Corning Incorporated | Catalyst device fabricated in situ and method of fabricating the device |
| JP5909346B2 (en) * | 2011-11-14 | 2016-04-26 | 株式会社不二工機 | Drainage pump |
-
1978
- 1978-07-21 JP JP53089089A patent/JPS6015517B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5517621A (en) | 1980-02-07 |
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