WO2001047770A1 - Helice a pas variable partiellement submergee montee sur une traverse profilee - Google Patents

Helice a pas variable partiellement submergee montee sur une traverse profilee Download PDF

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Publication number
WO2001047770A1
WO2001047770A1 PCT/HR1999/000037 HR9900037W WO0147770A1 WO 2001047770 A1 WO2001047770 A1 WO 2001047770A1 HR 9900037 W HR9900037 W HR 9900037W WO 0147770 A1 WO0147770 A1 WO 0147770A1
Authority
WO
WIPO (PCT)
Prior art keywords
propulsor
transom
blade
partially submerged
fitted
Prior art date
Application number
PCT/HR1999/000037
Other languages
English (en)
Inventor
Nenad FLEŠ
Original Assignee
Fles Nenad
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 Fles Nenad filed Critical Fles Nenad
Priority to AU30681/00A priority Critical patent/AU3068100A/en
Priority to PCT/HR1999/000037 priority patent/WO2001047770A1/fr
Publication of WO2001047770A1 publication Critical patent/WO2001047770A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/02—Propulsive elements directly acting on water of rotary type
    • B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14—Propellers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/02—Propulsive elements directly acting on water of rotary type
    • B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14—Propellers
    • B63H1/18—Propellers with means for diminishing cavitation, e.g. supercavitation
    • B63H2001/185—Surfacing propellers, i.e. propellers specially adapted for operation at the water surface, with blades incompletely submerged, or piercing the water surface from above in the course of each revolution

Definitions

  • Propulsion of fast catamarans almost exclusively relies on water jets application with installed power reaching 15000 -20000 kW or more.
  • an alternative propulsor is well known partially submerged propeller, usually protruding to some distance behind the transom in a way that lower half of a propeller disc runs, at operating speeds, in flow of the water leaving the vessel's bottom.
  • Usual mechanical execution includes universal shaft with pivoted propeller carrier allowing steering and vertical adjustment of propeller immersion to control absorption and to avoid overload of the engine.
  • Diameter of the disc which is considerably exceeding conventional CP propeller hub diameter, enables fitting of larger number of blades (8 or more) and this helps in keeping frequency and magnitude of fluctuating forces under control.
  • the blades are supposed to run in homogeneous flow with regular and constant radial wake distribution, promoting use of the wake adopted propeller (at the design point) with high efficiency.
  • Propulsor's thrust is directed horizontally, meaning that actual efficiency is abt. 2% higher when compared to conventional partially -submerged propeller with 12° shaft angle. 2.
  • Deviation from standard execution if we disregard non existance of intermediate shaft, long propeller shaft and stern tube, starts from large propulsor flange (13) and hub (14) which is of sufficient size to accommodate standard pitch control mechanism serving not only 3 or 4 blades (15) but 8 or more.
  • Inner flange (16) is not connected directly to blade flange (17) as there is short inserted shaft (18) between them. Inserted shaft is enclosed with tube (19), space between being filled with oil from the hub mechanism lubricating system.
  • Hub (14) and outer ring are connected with discs (21). At planing speeds, flow separation take place at the bottom, while transom remains dry.
  • Contour of the transom can be somewhat wider - with bigger radius - than disc of the propulsor for the purpose of avoding flow of water to the blade root representing a mode of absorption control as the effect is comparable with the effect of immersion of conventional partially submerged propeller.
  • Further improvement of propulsive efficiency can be obtained by cutting stern of the each of two hulls at on angle of abt. 60-70° to the centreline in plan view so that resulting force, composed of blade lift and drag components, will act right in desired direction of vessel's motion. In this way, normally useless side force, better to say energy normally lost to overcome drag of the blades, is converted to useful thrust energy.
  • a number of vanes can be fitted along bottom circumference immediately forward of the propulsor to compensate for rotational losses induced by propulsor rotation.
  • some parts can be built of epoxy reinforced carbon fibres (discs, inserts and similar)
  • This kind of propulsor can be, obviously, powered by one diesel engine or one gas turbine per each hull. However, in case, that output available from one engine is not 0 sufficient, two engines can be fitted, in staggered corfiguration due to hull narowness, so that gear box will have two input shafts. Invention is to be exclusively used for the propulsion of very fast catamarans with slender displacement hulls. Width of hulls can be in the range 1 to 4 m or more and length from 20 to 80 m or more.
  • Installed power per propulsor could be in the range 2000 kW to 20000 kW and more.
  • reduction gear ratio can be selected to suit to expected output speed range from 800 to 200 rpm.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

L'invention concerne un disque partiellement submergé comportant des pales à pas variable, destiné à être monté sur des traverses articulées. Ledit disque est composé de moyeux de taille suffisante (14) bridés sur un arbre principal (13) au moyen d'un certain nombre de brides intérieures (16) actionnées par un mouvement linéaire d'un étrier (11) afin de transmettre une rotation par l'intermédiaire d'inserts courts (19) vers des pales de propulseur (15). Les autres parties sont du type généralement rencontré sur des systèmes d'hélices à pas variable et des systèmes à tube d'étambot ayant fait leurs preuves. Ce type d'intégration du propulseur dans une coque fine permet d'obtenir un écoulement constant au niveau du segment de base sélectionné, et de commander les forces de fluctuation par sélection du profilé d'écoulement à des positions d'entrée et de sortie de pale, ou par sélection du nombre de pales en fonction de la taille angulaire active du segment de base. La faible résistance de la coque de section arrondie, la poussée horizontale, et un montage possible du propulseur sur l'étambot coupé, permettent d'exploiter le pouvoir propulsif de la force de traînée de pale. Selon l'invention, la puissance totale du propulseur de coque est supérieure à celle des systèmes à hélice partiellement submergée habituels, en raison des possibilités de configuration mécanique/hydrodynamique dudit propulseur, destinées à éliminer les limitations de puissance des systèmes habituels.
PCT/HR1999/000037 1999-12-28 1999-12-28 Helice a pas variable partiellement submergee montee sur une traverse profilee WO2001047770A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU30681/00A AU3068100A (en) 1999-12-28 1999-12-28 Partially submerged controllable pitch propeller fitted to transom contoured thereto
PCT/HR1999/000037 WO2001047770A1 (fr) 1999-12-28 1999-12-28 Helice a pas variable partiellement submergee montee sur une traverse profilee

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/HR1999/000037 WO2001047770A1 (fr) 1999-12-28 1999-12-28 Helice a pas variable partiellement submergee montee sur une traverse profilee

Publications (1)

Publication Number Publication Date
WO2001047770A1 true WO2001047770A1 (fr) 2001-07-05

Family

ID=10947033

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/HR1999/000037 WO2001047770A1 (fr) 1999-12-28 1999-12-28 Helice a pas variable partiellement submergee montee sur une traverse profilee

Country Status (2)

Country Link
AU (1) AU3068100A (fr)
WO (1) WO2001047770A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007016804A1 (fr) * 2005-08-05 2007-02-15 Mueller Peter A Propulseur de bateau
EP1803643A1 (fr) 2005-12-30 2007-07-04 Flexitab S.r.l. Système de propulseur de surface pour des embarcations de déplacement et de semi-déplacement
EP1900636A1 (fr) * 2006-09-15 2008-03-19 Yellowfin Limited Propulsion pour bateaux et ses détails de construction
EP1900634A1 (fr) * 2006-09-15 2008-03-19 Yellowfin Limited Propulsion pour bateau et ses détails de construction
WO2009002265A1 (fr) * 2007-06-26 2008-12-31 Stormfågeln Ab Hélice de surface pour bateau équipée de pales ajustables
RU2614444C2 (ru) * 2015-09-03 2017-03-28 Федеральное государственное бюджетное учреждение науки Институт машиноведения им. А.А. Благонравова Российской академии наук (ИМАШ РАН) Способ работы безвихревого гребного винта и устройство движителя для жидких сред на его основе
RU2710142C1 (ru) * 2019-05-31 2019-12-24 Российская Федерация, От Имени Которой Выступает Министерство Промышленности И Торговли Российской Федерации Малошумный гребной винт
RU2735474C2 (ru) * 2019-02-26 2020-11-02 Федеральное государственное казенное военное образовательное учреждение высшего образования "Военный учебно-научный центр Военно-Морского Флота "Военно-морская академия им. Адмирала Флота Советского Союза Н.Г. Кузнецова" Способ снижения ходовой вибрации корпуса корабля, вызванной работой гребного винта, и устройство для его реализации

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE35307C (de) * C. G. NOR RENBERG in Köln, Mechtildisstr. 20 Schräg zur Schiffaxe umlaufender Schaufelradpropeller
GB2027132A (en) * 1978-08-01 1980-02-13 Harbord H R Propeller
DE4437924A1 (de) * 1994-10-24 1996-04-25 Buechler Dirk Mit Oberflächenpropeller ausgerüstetes Wasserfahrzeug
WO1999039973A1 (fr) * 1998-02-07 1999-08-12 Futuretech Technologies Limited Systeme de propulsion

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE35307C (de) * C. G. NOR RENBERG in Köln, Mechtildisstr. 20 Schräg zur Schiffaxe umlaufender Schaufelradpropeller
GB2027132A (en) * 1978-08-01 1980-02-13 Harbord H R Propeller
DE4437924A1 (de) * 1994-10-24 1996-04-25 Buechler Dirk Mit Oberflächenpropeller ausgerüstetes Wasserfahrzeug
WO1999039973A1 (fr) * 1998-02-07 1999-08-12 Futuretech Technologies Limited Systeme de propulsion

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Partially submerged propellers drive surface effect ship", MACHINE DESIGN, no. 903, 22 July 1971 (1971-07-22), pages 18, XP002145410 *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007016804A1 (fr) * 2005-08-05 2007-02-15 Mueller Peter A Propulseur de bateau
US8323063B2 (en) 2005-08-05 2012-12-04 Mueller Peter A Watercraft drive
EP1803643A1 (fr) 2005-12-30 2007-07-04 Flexitab S.r.l. Système de propulseur de surface pour des embarcations de déplacement et de semi-déplacement
EP1900636A1 (fr) * 2006-09-15 2008-03-19 Yellowfin Limited Propulsion pour bateaux et ses détails de construction
EP1900634A1 (fr) * 2006-09-15 2008-03-19 Yellowfin Limited Propulsion pour bateau et ses détails de construction
WO2008032121A3 (fr) * 2006-09-15 2009-05-22 Yellowfin Ltd Propulsion marine et ses détails de construction
WO2008032120A3 (fr) * 2006-09-15 2009-06-04 Yellowfin Ltd Propulsion marine et détails de sa construction
WO2009002265A1 (fr) * 2007-06-26 2008-12-31 Stormfågeln Ab Hélice de surface pour bateau équipée de pales ajustables
RU2614444C2 (ru) * 2015-09-03 2017-03-28 Федеральное государственное бюджетное учреждение науки Институт машиноведения им. А.А. Благонравова Российской академии наук (ИМАШ РАН) Способ работы безвихревого гребного винта и устройство движителя для жидких сред на его основе
RU2735474C2 (ru) * 2019-02-26 2020-11-02 Федеральное государственное казенное военное образовательное учреждение высшего образования "Военный учебно-научный центр Военно-Морского Флота "Военно-морская академия им. Адмирала Флота Советского Союза Н.Г. Кузнецова" Способ снижения ходовой вибрации корпуса корабля, вызванной работой гребного винта, и устройство для его реализации
RU2710142C1 (ru) * 2019-05-31 2019-12-24 Российская Федерация, От Имени Которой Выступает Министерство Промышленности И Торговли Российской Федерации Малошумный гребной винт

Also Published As

Publication number Publication date
AU3068100A (en) 2001-07-09

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