JPS5639991A - Propeller blade - Google Patents
Propeller bladeInfo
- Publication number
- JPS5639991A JPS5639991A JP11259879A JP11259879A JPS5639991A JP S5639991 A JPS5639991 A JP S5639991A JP 11259879 A JP11259879 A JP 11259879A JP 11259879 A JP11259879 A JP 11259879A JP S5639991 A JPS5639991 A JP S5639991A
- Authority
- JP
- Japan
- Prior art keywords
- propeller
- blade
- slit
- shaped cut
- cut parts
- 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.)
- Pending
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Hydraulic Turbines (AREA)
Abstract
PURPOSE: To prevent erosion due to cavitation by forming slit-shaped cut parts at the rear edge of a propeller blade.
CONSTITUTION: A proper number of slit-shaped cut parts 8 are formed in the part between 80W95% of the radius of a propeller at the rear edge of a propeller blade 1. Due to the formation of the slit-shaped cut parts 8, pressure passes to the opposite side of the blade. Therefore, even if breakdown of cavity occurs, it does not develop into crowding phenomenon, and erosion is not generated in consequence. As the small cut part is sufficient, the reduction of strength at this part does not occur, and the shape of the blade is not varied markedly, and the inherent performance of the propeller is not deteriorated.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11259879A JPS5639991A (en) | 1979-09-03 | 1979-09-03 | Propeller blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11259879A JPS5639991A (en) | 1979-09-03 | 1979-09-03 | Propeller blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5639991A true JPS5639991A (en) | 1981-04-15 |
Family
ID=14590738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11259879A Pending JPS5639991A (en) | 1979-09-03 | 1979-09-03 | Propeller blade |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5639991A (en) |
-
1979
- 1979-09-03 JP JP11259879A patent/JPS5639991A/en active Pending
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