JPS57994A - Nozzle apparatus for propelling craft - Google Patents

Nozzle apparatus for propelling craft

Info

Publication number
JPS57994A
JPS57994A JP7528480A JP7528480A JPS57994A JP S57994 A JPS57994 A JP S57994A JP 7528480 A JP7528480 A JP 7528480A JP 7528480 A JP7528480 A JP 7528480A JP S57994 A JPS57994 A JP S57994A
Authority
JP
Japan
Prior art keywords
nozzle
propeller
central line
constituted
boundary line
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.)
Granted
Application number
JP7528480A
Other languages
Japanese (ja)
Other versions
JPS6341798B2 (en
Inventor
Kinya Tamura
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP7528480A priority Critical patent/JPS57994A/en
Publication of JPS57994A publication Critical patent/JPS57994A/en
Publication of JPS6341798B2 publication Critical patent/JPS6341798B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE: To facilitate the production of a nozzle and improve the propelling efficiency of a screw, in a nozzle surrounding a screw propeller, by locating the blade tip of the propeller in front of the boundary line between the front inner surface and the rear inner surface of the nozzle.
CONSTITUTION: The intersecting point P between the propeller axis central line 4 and the central line 17 of the nozzle outer surface is arranged in front of the propeller center 0, while the intersecting point Q between the propeller axis central line 4 and the central line 18 of the nozzle rear inner surface is arranged in the rear of the propeller center 0. The blade tip of a screw propeller 2 is located in front of the boundary line 22 between the front inner surface and the rear inner surface of the nozzle. The nozzle inner surfaces 20a and 20b in front of the boundary line 22 are constituted so as to be axially symmetric with respect to the propeller axis central line 4. The nozzle inner surfaces 19a and 19b in the rear of the boundary line 22 are constituted so as to be axially symmetric with respect to the nozzle rear inner surface central line 18. Moreover, the nozzle outer surfaces 21a and 21b are constituted so as to be axially symmetric with respect to the nozzle outer surface central line 17. Thereby, production is facilitated, and the gap between the blade tip of the propeller 2 and the inner surface of the nozzle 12 will not change in the circumferential direction. Accordingly, cavitation hardly occurs, so that a nozzle performance of high propelling efficiency can be obtained.
COPYRIGHT: (C)1982,JPO&Japio
JP7528480A 1980-06-04 1980-06-04 Nozzle apparatus for propelling craft Granted JPS57994A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7528480A JPS57994A (en) 1980-06-04 1980-06-04 Nozzle apparatus for propelling craft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7528480A JPS57994A (en) 1980-06-04 1980-06-04 Nozzle apparatus for propelling craft

Publications (2)

Publication Number Publication Date
JPS57994A true JPS57994A (en) 1982-01-06
JPS6341798B2 JPS6341798B2 (en) 1988-08-18

Family

ID=13571764

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7528480A Granted JPS57994A (en) 1980-06-04 1980-06-04 Nozzle apparatus for propelling craft

Country Status (1)

Country Link
JP (1) JPS57994A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6232893U (en) * 1985-08-13 1987-02-26
US4789302A (en) * 1987-02-06 1988-12-06 Josip Gruzling Propeller shroud

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU367004A1 (en) * 1970-07-14 1973-01-23 '•• INVENTIONS

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU367004A1 (en) * 1970-07-14 1973-01-23 '•• INVENTIONS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6232893U (en) * 1985-08-13 1987-02-26
US4789302A (en) * 1987-02-06 1988-12-06 Josip Gruzling Propeller shroud

Also Published As

Publication number Publication date
JPS6341798B2 (en) 1988-08-18

Similar Documents

Publication Publication Date Title
JPS57994A (en) Nozzle apparatus for propelling craft
JPS5718596A (en) Propeller blade with small blade
GB1025297A (en) Improvements in or relating to electrolytic machining
GB1325395A (en) Marine ring propellers
JPS52141991A (en) Ship having tandem type propeller
JPS56167593A (en) Screw propeller for ship
JPS5371422A (en) Vehiclar driving propeller shaft
JPS525187A (en) Propeller or pump blade
JPS51146086A (en) Ship with reduced wave producing resistance
JPS52141993A (en) Jet thrustcontrol means
JPS57205299A (en) Duct propeller
JPS5726095A (en) Shoe piece for ship
JPS6451160A (en) Rotary jetting nozzle for cleaning
JPS57107996A (en) Ducted propeller
JPS5264789A (en) Shape of stern
JPS56124586A (en) Semisubmerged ship
JPS52101590A (en) Ship
JPS5425092A (en) Ship
JPS5332594A (en) Ship
JPS5338090A (en) Method of mounting stern tube for bearing for ship propeller
JPS53136296A (en) Method of replacement of main engine and the like in existing vessel
JPS5231492A (en) Jet propelling device in water
JPS5726096A (en) Propulsion-improving rudder for ship
JPS57107995A (en) Ducted propeller
JPS5690797A (en) Ship