JPS57107996A - Ducted propeller - Google Patents

Ducted propeller

Info

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
Application number
JP18463780A
Other languages
Japanese (ja)
Inventor
Noriyuki Sasaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Heavy Industries Ltd
Original Assignee
Sumitomo Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Heavy Industries Ltd filed Critical Sumitomo Heavy Industries Ltd
Priority to JP18463780A priority Critical patent/JPS57107996A/en
Publication of JPS57107996A publication Critical patent/JPS57107996A/en
Pending legal-status Critical Current

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
JP18463780A 1980-12-25 1980-12-25 Ducted propeller Pending JPS57107996A (en)

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)

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