JPS57107996A - Ducted propeller - Google Patents
Ducted propellerInfo
- Publication number
- JPS57107996A JPS57107996A JP18463780A JP18463780A JPS57107996A JP S57107996 A JPS57107996 A JP S57107996A JP 18463780 A JP18463780 A JP 18463780A JP 18463780 A JP18463780 A JP 18463780A JP S57107996 A JPS57107996 A JP S57107996A
- Authority
- JP
- Japan
- Prior art keywords
- propeller
- duct
- gap
- thrust
- clearance
- 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
Abstract
PURPOSE: To prevent cavitation corrosion while improving efficiency of thrust by providing a ring-shaped gap in a duct near the end of a propeller.
CONSTITUTION: A ring-shaped gap 3 is provided in a duct 2 near the end of a propeller 1. The gap 3 is formed so as to eliminate completely cavitation corrosion portions. The provision of the gap 3 overcomes problems about clearance between the propeller 1 and the duct 2 to lighten the accuracy of installation. Also, the outer diameter of the propeller 1 can be approximately equalized to the inner diameter of the duct 2 so that the clearance between the propeller and the duct is eliminated and the efficiency of thrust is improved.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18463780A JPS57107996A (en) | 1980-12-25 | 1980-12-25 | Ducted propeller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18463780A JPS57107996A (en) | 1980-12-25 | 1980-12-25 | Ducted propeller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57107996A true JPS57107996A (en) | 1982-07-05 |
Family
ID=16156710
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18463780A Pending JPS57107996A (en) | 1980-12-25 | 1980-12-25 | Ducted propeller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57107996A (en) |
-
1980
- 1980-12-25 JP JP18463780A patent/JPS57107996A/en active Pending
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