WO2019048745A1 - Rear supporting hydrodynamic assembly of an outboard motor for a lowered motor position - Google Patents

Rear supporting hydrodynamic assembly of an outboard motor for a lowered motor position Download PDF

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Publication number
WO2019048745A1
WO2019048745A1 PCT/FR2018/000210 FR2018000210W WO2019048745A1 WO 2019048745 A1 WO2019048745 A1 WO 2019048745A1 FR 2018000210 W FR2018000210 W FR 2018000210W WO 2019048745 A1 WO2019048745 A1 WO 2019048745A1
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WO
WIPO (PCT)
Prior art keywords
hull
motor
engine
outboard
deflection
Prior art date
Application number
PCT/FR2018/000210
Other languages
French (fr)
Inventor
David Raison
Benoît LEQUIN
Original Assignee
Seair
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
Priority claimed from FR1770947A external-priority patent/FR3070962B1/en
Priority claimed from FR1701178A external-priority patent/FR3073489B1/en
Application filed by Seair filed Critical Seair
Priority to AU2018330620A priority Critical patent/AU2018330620A1/en
Priority to CA3075500A priority patent/CA3075500A1/en
Priority to EP18779737.8A priority patent/EP3681790B1/en
Publication of WO2019048745A1 publication Critical patent/WO2019048745A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
    • B63B1/24—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type
    • B63B1/246—Arrangements of propulsion elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
    • B63H20/32—Housings
    • B63H20/34—Housings comprising stabilising fins, foils, anticavitation plates, splash plates, or rudders

Definitions

  • the present invention relates to a hydrodynamic assembly carrying outboard outboard.
  • the invention is particularly adapted to the class of outboard motor boat, and in particular to that called semi-rigid boat.
  • Semi rigid boats include a rigid hull and inflatable side protection floats. These boats are not today equipped with a load-bearing wing in the water, also called foil. Indeed, the recent foil technology has been adopted by different types of sailing and motor boats but has not yet been adopted for semi-rigid motor boats. It is described in a previous patent of the present applicant a front bearing system of semi-rigid boat by means of wings called foils. The wings are arranged according to the invention approximately in the middle of the boat and on each side. The invention provides a rear bearing assembly which cooperates with the front bearing system to provide optimum lift and navigation.
  • the invention aims to use existing solutions to bring a new lift.
  • This second solution solver requires modifying key navigation parameters, such as that of the underwater engine position, which is typically lowered, as will be readily understood, to respond optimally to the fact that the boat is lifted. In short, the boat being raised, it must be possible to lower the position of the engine under water.
  • the invention proposes a system which makes it possible to dress the outboard motor in lowered position in order to Maximum response to the constraints of using an outboard boat. It is understood that in some aspects of use, the engine can be lowered or raised underwater during navigation. It is therefore necessary to provide the engine block enhancement that improves navigation characteristics when the engine is lowered but does not interfere with navigation when the engine is positioned in its traditional position.
  • a main object of the invention is to provide a rear carrying assembly that fits the complete rear assembly of the boat ie its engine and its hull and its engine hull.
  • An object of the invention is to provide a rear bearing system which is easily industrializable and which is adaptable in original equipment or aftermarket on a boat.
  • An object of the invention is to provide a rear carrying system that is robust and economical.
  • An object of the invention is to maximize the lift and lift the boat out of the water.
  • the invention provides a rear bearing system which includes the cooperation of a new airfoil and new deflector plates.
  • the invention provides a load-bearing wing which is installed on the housing of the propeller shaft. It was not easy to position the wing at this level because naturally the reflex is to think that this position harms the quality of traction of the propeller sees an additional obstacle added before it.
  • the invention proposes the addition of baffle deflector plates and water dynamic penetration profiles particularly cleverly arranged water.
  • FIG. 1 represents a view from above, according to the invention, of the distribution of the bearing surfaces
  • FIG. 3 represents a bottom profile view of the motorization according to the invention
  • FIG. 5 shows the position of the underwater engine not equipped with the invention and not lowered.
  • FIG. 6 represents the position of the underwater engine equipped with the invention and lowered underwater
  • FIGS. 7a, 7b and 8a, 8b show a front and side view of hydro dynamic return plates according to the present invention
  • FIG. 1 represents a view from above, according to the invention, of the distribution of the airfoils with two front wings (11a, 11b), a port forward wing (11a) and a starboard front wing (11b).
  • a rear wing (10) positioned on the central longitudinal axis at the rear of the boat, typically secured to the hull of the engine assembly.
  • Figure 2 shows a profile view of the bottom of traditional motorization. Which comprises a propeller (20) propelled by a direct drive shaft (23) horizontal.
  • the direct drive shaft (23) is substantially horizontal and is driven by a vertical indirect drive shaft (24) at 90 ° relative to the direct drive shaft (23).
  • the indirect drive shaft (24) joins the engine block positioned above the water.
  • the direct motor shaft (23) is streamlined in a generally ogive-shaped bodywork.
  • the vertical indirect drive shaft is streamlined in a substantially tubular oblong body.
  • the hull of the indirect drive shaft includes grooves called anti cavitation plate (22) and anti stacking plate (21). These plates have the function of channeling the air and liquid flows to optimize the operation of the propeller under water.
  • the engine is mounted in its lowest possible position under water, and for the purpose of being able to raise the boat as much as possible over the water. It is understood that in this case the relative position of anti cavitation plates and anti stacking plates are lower relative to the hull of the boat. In short, all the hydrodynamics of the boat is totally modified compared to the standard operation of the engine. In view of this, it appeared necessary to design and create new
  • the invention proposes to position the airfoil at the front of the direct drive shaft keel (23) of the propeller. After multiple calculations, tests, it was found that the hydrodynamic operation of the boat was improved by positioning a motor deflection ring (70) positioned at the front of the indirect drive shaft hull, above the anti-stacking plates ( 21) and anti cavitation (22).
  • This deflection ring (70) can cooperate substantially on the same horizontal plane with a substantially aligned boat hull deflection plate (90) which is fixed below the hull of the boat.
  • FIGS. 4a, 4b, 4c respectively represent top views, of the front deflection ring (80), of the baffle plate (90), and of the airfoil (10) which is fixed by a complementary interlocking (43) on the direct drive shaft keel (23).
  • the supporting wing adopting a symmetrical shape giving way to a left wing and a symmetrical right wing of the left wing.
  • the invention realizes a combination of three innovations, namely, firstly lowering the position of the propeller under the boat, secondly, positioning the airfoil on the plane of the direct drive shaft of the propeller, third, add a deflection crown and possibly a deflection plate on the top and the front of the hull of the indirect drive shaft and in the extension under the hull of the boat.
  • the deflection ring (80) may be a ring which comprises a set of superimposed double grooves in order to combine, for example, deflection forces on the air flows and on the water flows.
  • FIGS. 5 shows how, according to a traditional position, in the normal position under water, anti-cavitation and anti-stacking plates fulfill their hydro dynamic function, and how by lowering the position of the motor in the water, the invention proposes the combination of a deflection ring (80) which can be above a hydrodynamic section penetration (70) which comes to dress the hull of the engine to increase the characteristics of penetration into the water of the engine hull which prior to the invention was not profiled to work under water.
  • the deflection crown is positioned at the water level and by means of the combination of two deflection plates positioned one under water and the other above the water participates in a return of the flows of air and water to optimize the operation of the engine and therefore the boat.
  • FIG. 7a, 7b and 8a, 8b show a front and profile view of hydro dynamic return plates according to the present invention, with the penetration profile plate (70) which, in front view, presents an elliptical profile for concentrating the flow of water at the internal structure, a leading edge (73) which maximizes the penetration into the water, and in profile view in FIG. 8b, a deflection ring (80) which presents which has front view an elliptical profile for concentrating the flow of water at the internal structure, and in profile a middle section which has a penetrating attack profile (83) penetrating so as to optimize the hydrodynamic return.
  • the penetration profile plate (70) which, in front view, presents an elliptical profile for concentrating the flow of water at the internal structure, a leading edge (73) which maximizes the penetration into the water, and in profile view in FIG. 8b
  • a deflection ring (80) which presents which has front view an elliptical profile for concentrating the flow of water at the internal structure, and
  • deflection ring (80) and the penetration profile (70) present in profile on their rear unhooked cuts (74, 84) complementary to the shape of the engine hull so as to fit together solidly on the engine hull to support the various efforts that will be applied to it.
  • the present invention therefore relates to a hydrodynamic assembly carrying outboard outboard sailing on a hull cooperating with a set of front fenders (l ia, 11b), the outboard is driven by a propeller power unit propelled underwater by a direct drive shaft (23) actuated by an indirect drive shaft (24), on an engine propulsion hull comprising anti-stacking (21) and anti-cavitation plates (22) positioned above the propeller (24) intended to position at the water level characterized in that the engine manufacturer position is lowered under water, the hull engine is dressed with a load-bearing wing (10) attached to the front on the hull of the hull direct shaft (23), a deflection ring (80) attached above the anti-stack (21) and anti-cavitation (22) plates and at the front and the hull of the indirect drive shaft (24) , a hydrodynamic penetration profile attached fitted to the front of the hull of the drive shaft in direct (24), occupying the space at the front of the engine between the top of the stacking

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention relates to a rear supporting hydrodynamic assembly of an outboard boat motor on a hull engaging with a set of front foils, the outboard motor being driven by an underwater propeller motor assembly driven by a direct motor shaft actuated by an indirect motor shaft, on a motor propulsion fairing comprising anti-stacking and anti-cavitation plates positioned above the propeller intended for being positioned at the water level, characterised in that the motor fairing is covered by a hydrofoil (10) added at the front onto the direct shaft fairing cone, a deflection crown (80) added above the anti-stacking and anti-cavitation plates and in front of the indirect motor shaft fairing, an added hydrodynamic permeability profile (70) inserted in front of the indirect motor shaft fairing, occupying the space in front of the motor between the top of the anti-stacking and anti-cavitation plates and the bottom of the deflection crown (80), the rear of the hull is provided at the level of the placement of the deflection crown with a deflection plate (90).

Description

Ensemble hydrodynamique portant arrière de hors-bord pour position moteur abaissé.  Hydrodynamic outboard rear outboard assembly for lowered engine position.
La présente invention concerne un ensemble hydrodynamique portant arrière de hors-bord. L'invention est particulièrement adaptée à la classe de bateau motorisé de type hors-bord, et notamment à celle dite de bateau semi rigide. The present invention relates to a hydrodynamic assembly carrying outboard outboard. The invention is particularly adapted to the class of outboard motor boat, and in particular to that called semi-rigid boat.
Les bateaux semi rigides comprennent une coque rigide et des flotteurs de protection latéraux gonflables. Ces bateaux ne sont pas aujourd'hui équipés d'aile portante dans l'eau, aussi dénommées foil. En effet, la technologie du foil qui est récente a été adoptée par différents type de bateaux à voile et à moteur mais n'a pas encore été adoptée pour les bateaux à moteur semi-rigides. Il est décrit dans un brevet précédent du présent déposant un système portant avant de bateau semi-rigide au moyen d'ailes dénommées foils. Les ailes sont disposées selon l'invention environ au milieu du bateau et de chaque côté. L'invention propose un ensemble portant arrière qui coopère avec le système portant avant afin d'assurer une portance et une navigation optimum.  Semi rigid boats include a rigid hull and inflatable side protection floats. These boats are not today equipped with a load-bearing wing in the water, also called foil. Indeed, the recent foil technology has been adopted by different types of sailing and motor boats but has not yet been adopted for semi-rigid motor boats. It is described in a previous patent of the present applicant a front bearing system of semi-rigid boat by means of wings called foils. The wings are arranged according to the invention approximately in the middle of the boat and on each side. The invention provides a rear bearing assembly which cooperates with the front bearing system to provide optimum lift and navigation.
Il existe actuellement des systèmes portants arrière qui sont conçus pour apporter un léger déjaugeage, sans portance avant associée. Ces systèmes ont une efficacité très relative et sont en fait assez décriés, voir jugés inefficaces. Ils consistent en l'ajout de surface portante au niveau de la plaque anti-cavitation du moteur positionnée sur la carène d'arbre moteur positionnée. En bref, l'art antérieur décrit des appendices rapportés qui apportent une légère amélioration de portance arrière. L'effet est très limité dans la mesure où la portance avant n'est pas améliorée. L'invention a un objet bien plus large qui est de proposer une portance arrière qui coopère avec une portance avant. Comme il sera compris à la lecture de la présente description, l'invention se doit de résoudre une série de problèmes difficiles qui consistent en A - proposer un système portant arrière avec des performances nouvelles jamais atteintes B - Ne pas nuire aux performances traditionnelles, lorsque le bateau est utilisé non porté en condition de navigation traditionnelle. En bref, l'invention vise à proposer un système portant arrière hybride qui fonctionne à la fois en condition portante, mais aussi en condition non portante. There are currently rear-mounted systems that are designed to provide a slight lift without associated forward lift. These systems have a very relative efficiency and are in fact quite discredited or even considered ineffective. They consist of the addition of bearing surface at the level of the anti-cavitation plate of the motor positioned on the motor shaft hull positioned. In short, the prior art describes reported appendages which provide a slight improvement in rear lift. The effect is very limited as forward lift is not improved. The invention has a much broader object which is to provide a rear lift which cooperates with forward lift. As will be understood from the present description, the invention is to solve a series of difficult problems which consist in A - proposing a rear bearing system with new performances never achieved B - Do not harm the traditional performance, when the boat is used unworn in traditional sailing conditions. In short, the invention aims to provide a hybrid rear bearing system that operates both in bearing condition, but also in non-bearing condition.
Il est entendu que l'invention vise à utiliser des solutions existantes pour y apporter une portance nouvelle. Cette seconde monte de solution nécessite de modifier des paramètres clés de navigation, comme celui de la position du moteur sous l'eau, qui est typiquement abaissé, comme il sera facilement compris, pour répondre de façon optimum au fait que le bateau soit soulevé. En bref, le bateau étant soulevé, il faut pouvoir abaisser la position du moteur sous l'eau. L'invention propose un système qui permette d'habiller le moteur hors-bord en position abaissée afin de répondre au maximum aux contraintes d'utilisation d'un bateau hors-bord. Etant compris que dans certains aspects de l'utilisation, le moteur peut être abaissé ou remonté sous l'eau pendant la navigation. Il convient donc d'apporter au bloc moteur un perfectionnement qui améliore les caractéristiques de navigation lorsque le moteur est abaissé mais qui ne nuise pas à la navigation lorsque le moteur est positionné dans sa position traditionnelle. It is understood that the invention aims to use existing solutions to bring a new lift. This second solution solver requires modifying key navigation parameters, such as that of the underwater engine position, which is typically lowered, as will be readily understood, to respond optimally to the fact that the boat is lifted. In short, the boat being raised, it must be possible to lower the position of the engine under water. The invention proposes a system which makes it possible to dress the outboard motor in lowered position in order to Maximum response to the constraints of using an outboard boat. It is understood that in some aspects of use, the engine can be lowered or raised underwater during navigation. It is therefore necessary to provide the engine block enhancement that improves navigation characteristics when the engine is lowered but does not interfere with navigation when the engine is positioned in its traditional position.
Un objet principal de l'invention est de proposer un ensemble portant arrière qui s'adapte à l'ensemble arrière complet du bateau à savoir à son moteur et à sa coque et à sa carène de moteur.  A main object of the invention is to provide a rear carrying assembly that fits the complete rear assembly of the boat ie its engine and its hull and its engine hull.
Un objet de l'invention est de proposer un système portant arrière qui soit facilement industrialisable et qui soit adaptable en première monte ou en seconde monte sur un bateau.  An object of the invention is to provide a rear bearing system which is easily industrializable and which is adaptable in original equipment or aftermarket on a boat.
Un objet de l'invention est de proposer un système portant arrière qui soit robuste et économique.  An object of the invention is to provide a rear carrying system that is robust and economical.
Un objet de l'invention est de maximiser la portance et de soulever au maximum le bateau hors de l'eau.  An object of the invention is to maximize the lift and lift the boat out of the water.
Dans un aspect principal, l'invention propose un système portant arrière qui comprend la coopération d'une aile portante nouvelle et de plaques déflectrices nouvelles. Dans un aspect l'invention propose une aile portante qui se pose sur le carter de l'arbre moteur d'hélice. Il n'était pas évident de positionner l'aile portant à ce niveau car naturellement le réflexe est de penser que cette position nuit à la qualité de traction de l'hélice qui voit un obstacle supplémentaire rajouté devant elle. In a main aspect, the invention provides a rear bearing system which includes the cooperation of a new airfoil and new deflector plates. In one aspect the invention provides a load-bearing wing which is installed on the housing of the propeller shaft. It was not easy to position the wing at this level because naturally the reflex is to think that this position harms the quality of traction of the propeller sees an additional obstacle added before it.
Dans un aspect l'invention propose l'ajout de plaques de renvois déflectrices et de profils de pénétration hydro dynamiques dans l'eau particulièrement astucieusement disposés.  In one aspect the invention proposes the addition of baffle deflector plates and water dynamic penetration profiles particularly cleverly arranged water.
L'invention sera mieux comprise à la lecture des figures annexées sur lesquelles qui représentent un mode particulier de l'invention sur lesquelles :  The invention will be better understood on reading the appended figures, which show a particular embodiment of the invention in which:
- La figure 1 représente une vue de dessus, selon l'invention, de la répartition des surfaces portantes  FIG. 1 represents a view from above, according to the invention, of the distribution of the bearing surfaces
- La figure 2 représente une vue de profil du bas de motorisation traditionnelle  - Figure 2 shows a profile view of the bottom of traditional motorization
- La figure 3 représente une vue de profil de bas de motorisation selon l'invention  FIG. 3 represents a bottom profile view of the motorization according to the invention
- Les figures 4a, 4b, 4c représentent respectivement des vues de dessus, d'une plaque déflectrice de moteur, d'une plaque déflectrice de bateau, et de l'aile portante selon l'invention. - La figure 5 représente la position du moteur sous l'eau non équipé de l'invention et non abaissé - Figures 4a, 4b, 4c respectively show top views of an engine baffle plate, a baffle plate of the boat, and the load-bearing wing according to the invention. FIG. 5 shows the position of the underwater engine not equipped with the invention and not lowered.
- La figure 6 représente la position du moteur sous l'eau équipé de l'invention et abaissé sous l'eau  FIG. 6 represents the position of the underwater engine equipped with the invention and lowered underwater
- Les figures 7a, 7b et 8a, 8b représentent une vue de face et de profil de plaques de renvoi hydro dynamiques selon la présente invention  FIGS. 7a, 7b and 8a, 8b show a front and side view of hydro dynamic return plates according to the present invention
La figure 1 représente une vue de dessus, selon l'invention, de la répartition des surfaces portantes avec deux ailes avant (l ia, 11b), une aile avant bâbord (l ia) et une aile avant tribord (11b). Une aile arrière (10) positionnée sur l'axe longitudinal central, à l'arrière du bateau, typiquement solidarisée à la carène de l'ensemble moteur. La figure 2 représente une vue de profil du bas de motorisation traditionnelle. Qui comprend une hélice (20) propulsée par un arbre moteur direct (23) horizontal. L'arbre moteur direct (23) étant sensiblement horizontal et est entraîné par un renvoi arbre moteur indirect (24) vertical, à 90° par rapport à l'arbre moteur direct (23). L'arbre moteur indirect (24) rejoint le bloc moteur positionné au-dessus de l'eau. L'arbre moteur direct (23) est caréné dans une carrosserie en forme générale d'ogive. L'arbre moteur indirect vertical est caréné dans une carrosserie oblongue sensiblement tubulaire. Traditionnellement la carène de l'arbre moteur indirect comprend des rainures dénommées plaque anti cavitation (22) et plaque anti gerbage (21). Ces plaques ont pour fonction de canaliser les flux d'air et de liquide pour optimiser le fonctionnement de l'hélice sous l'eau. Dans le cadre de la présente invention, le moteur est monté dans sa position la plus basse possible sous l'eau, et ce dans le but de pouvoir surélever au maximum le bateau au-dessus de l'eau. Il est entendu que dans ce cas la position relative des plaques anti cavitation et plaques anti gerbage sont plus basses par rapport la coque du bateau. En bref, toute l'hydrodynamique du bateau est totalement modifiée par rapport au fonctionnement standard du moteur. Au vu de quoi il a apparu nécessaire de concevoir et de créer de nouvelles r FIG. 1 represents a view from above, according to the invention, of the distribution of the airfoils with two front wings (11a, 11b), a port forward wing (11a) and a starboard front wing (11b). A rear wing (10) positioned on the central longitudinal axis at the rear of the boat, typically secured to the hull of the engine assembly. Figure 2 shows a profile view of the bottom of traditional motorization. Which comprises a propeller (20) propelled by a direct drive shaft (23) horizontal. The direct drive shaft (23) is substantially horizontal and is driven by a vertical indirect drive shaft (24) at 90 ° relative to the direct drive shaft (23). The indirect drive shaft (24) joins the engine block positioned above the water. The direct motor shaft (23) is streamlined in a generally ogive-shaped bodywork. The vertical indirect drive shaft is streamlined in a substantially tubular oblong body. Traditionally the hull of the indirect drive shaft includes grooves called anti cavitation plate (22) and anti stacking plate (21). These plates have the function of channeling the air and liquid flows to optimize the operation of the propeller under water. In the context of the present invention, the engine is mounted in its lowest possible position under water, and for the purpose of being able to raise the boat as much as possible over the water. It is understood that in this case the relative position of anti cavitation plates and anti stacking plates are lower relative to the hull of the boat. In short, all the hydrodynamics of the boat is totally modified compared to the standard operation of the engine. In view of this, it appeared necessary to design and create new
plaques de déflection, positionnées à des endroits nouveaux. L'invention doit donc habiller une partie du moteur qui traditionnellement n'était pas immergée pour la rendre hydrodynamique lorsqu'elle devient immergée. La partie carène moteur au-dessus des plaques cavitation Comme représenté en figure 3, l'invention propose de positionner l'aile portante à l'avant de l'ogive de carène d'arbre moteur direct (23) d'hélice. Après multiples calcul, essais, il a été trouvé que le fonctionnement hydrodynamique du bateau était amélioré en positionnant une couronne de déflection moteur (70) positionnée à l'avant de la carène d'arbre moteur indirect, au-dessus des plaques anti gerbage (21) et anti cavitation (22). Cette couronne de déflection (70) peut coopérer sensiblement sur le même plan horizontal avec une plaque de déflection de coque (90) de bateau sensiblement alignée qui est-elle fixée sous la coque du bateau. Les figures 4a, 4b, 4c représentent respectivement des vues de dessus, de la couronne de déflection avant (80), de la plaque déflectrice de coque (90), et de l'aile portante (10) qui se fixe par un emboîtement complémentaire (43) sur l'ogive de carène d'arbre moteur direct (23). L'aile portante adoptant une forme symétrique faisant place à une aile gauche et une aile droite symétrique de l'aile gauche. En bref, l'invention réalise une combinaison de trois innovations, à savoir, premièrement abaisser la position de l'hélice sous le bateau, secondement, positionner ne aile portante sur le plan de l'arbre moteur direct de l'hélice, troisièmement, ajouter une couronne de déflection et possiblement une plaque de déflection sur le haut et sur l'avant de la carène de l'arbre moteur indirect et dans le prolongement sous la coque du bateau. La couronne de déflection (80) peut être une couronne qui comporte un jeu de doubles rainures superposées afin de conjuguer par exemple des efforts de déflection sur les flux d'air et sur les flux d'eau. La figure 5 représente comment selon une position traditionnelle, en position normale sous l'eau, plaques anti cavitation et anti gerbage remplissent leur fonction hydro dynamique, et comment en abaissant la position du moteur dans l'eau, l'invention propose la combinaison d'une couronne de déflection (80) qui peut se trouver au-dessus d'un profilé hydrodynamique de pénétration (70) qui vient habiller la carène du moteur afin d'augmenter les caractéristiques de pénétration dans l'eau de la carène de moteur qui préalablement à l'invention n'était pas profilée pour travailler sous l'eau. La couronne de déflection est positionné au niveau de l'eau et au moyen de la combinaison de deux plaques de déflection positionnées l'une sous l'eau et l'autre au-dessus de l'eau participe à un renvoi des flux d'air et d'eau pour optimiser le fonctionnement du moteur et donc du bateau. Les figures 7a, 7b et 8a, 8b représentent une vue de face et de profil de plaques de renvoi hydro dynamiques selon la présente invention, avec la plaque de profil de pénétration (70) qui présente en vue de face un profil elliptique pour concentrer le flux d'eau au niveau de la structure interne, un bord d'attaque (73) qui maximise la pénétration dans l'eau, et en vue de profil en figure 8b, une couronne de de déflection (80) qui présente qui présente en vue de face un profil elliptique pour concentrer le flux d'eau au niveau de la structure interne, et en vue de profil une section médiane qui présente un profil d'attaque (83) acéré pénétrant de façon à optimiser le renvoi hydrodynamique. Etant également entendu que la couronne de déflection (80) et le profil de pénétration (70) présentent en vue de profil sur leur arrière des découpes en décrochés (74, 84) complémentaires de la forme de la carène moteur de façon à s 'emboîter solidement sur la carène moteur afin de supporter les différents efforts qui lui seront appliqués. La présente invention concerne donc un ensemble hydrodynamique portant arrière de hors-bord naviguant sur une coque coopérant avec un jeu d'ailes avant (l ia, 11b), le hors-bord est mu par un ensemble moteur à hélice sous l'eau propulsée par un arbre moteur direct (23) actionné par un arbre moteur indirect (24), sur une carène de propulsion moteur comprenant des plaques anti gerbage (21) et anti cavitation (22) positionnées au-dessus de l'hélice (24) destinées à se positionner au niveau de l'eau caractérisé en ce que la position moteur constructeur est abaissée sous l'eau, la carène moteur est habillé d'une aile portante (10) rapportée à l'avant sur l'ogive de carène d'arbre direct (23), d'une couronne de déflection (80) rapportée au-dessus des plaques anti gerbage (21) et anti cavitation (22) et à l'avant et de la carène de l'arbre moteur indirect (24), d'un profil de pénétration hydrodynamique rapporté emboîté à l'avant de la carène de l'arbre moteur indirect (24), occupant l'espace à l'avant du moteur entre le haut des plaques anti gerbage (21) et anti cavitation (22) et le bas de la couronne de déflection (80), l'arrière de la coque est équipé à hauteur du placement de la couronne de déflection (80) d'une plaque de déflection (90). On voit bien que de nombreuses variantes éventuellement susceptibles de se combiner peuvent ici être apportées sans jamais sortir du cadre de l'invention tel qu'il est défini ci-après. deflection plates, positioned in new places. The invention must therefore dress part of the engine which has traditionally not been immersed to make it hydrodynamic when it becomes submerged. The motor hull portion above the cavitation plates As shown in FIG. 3, the invention proposes to position the airfoil at the front of the direct drive shaft keel (23) of the propeller. After multiple calculations, tests, it was found that the hydrodynamic operation of the boat was improved by positioning a motor deflection ring (70) positioned at the front of the indirect drive shaft hull, above the anti-stacking plates ( 21) and anti cavitation (22). This deflection ring (70) can cooperate substantially on the same horizontal plane with a substantially aligned boat hull deflection plate (90) which is fixed below the hull of the boat. FIGS. 4a, 4b, 4c respectively represent top views, of the front deflection ring (80), of the baffle plate (90), and of the airfoil (10) which is fixed by a complementary interlocking (43) on the direct drive shaft keel (23). The supporting wing adopting a symmetrical shape giving way to a left wing and a symmetrical right wing of the left wing. In short, the invention realizes a combination of three innovations, namely, firstly lowering the position of the propeller under the boat, secondly, positioning the airfoil on the plane of the direct drive shaft of the propeller, third, add a deflection crown and possibly a deflection plate on the top and the front of the hull of the indirect drive shaft and in the extension under the hull of the boat. The deflection ring (80) may be a ring which comprises a set of superimposed double grooves in order to combine, for example, deflection forces on the air flows and on the water flows. FIG. 5 shows how, according to a traditional position, in the normal position under water, anti-cavitation and anti-stacking plates fulfill their hydro dynamic function, and how by lowering the position of the motor in the water, the invention proposes the combination of a deflection ring (80) which can be above a hydrodynamic section penetration (70) which comes to dress the hull of the engine to increase the characteristics of penetration into the water of the engine hull which prior to the invention was not profiled to work under water. The deflection crown is positioned at the water level and by means of the combination of two deflection plates positioned one under water and the other above the water participates in a return of the flows of air and water to optimize the operation of the engine and therefore the boat. FIGS. 7a, 7b and 8a, 8b show a front and profile view of hydro dynamic return plates according to the present invention, with the penetration profile plate (70) which, in front view, presents an elliptical profile for concentrating the flow of water at the internal structure, a leading edge (73) which maximizes the penetration into the water, and in profile view in FIG. 8b, a deflection ring (80) which presents which has front view an elliptical profile for concentrating the flow of water at the internal structure, and in profile a middle section which has a penetrating attack profile (83) penetrating so as to optimize the hydrodynamic return. Also being understood that the deflection ring (80) and the penetration profile (70) present in profile on their rear unhooked cuts (74, 84) complementary to the shape of the engine hull so as to fit together solidly on the engine hull to support the various efforts that will be applied to it. The present invention therefore relates to a hydrodynamic assembly carrying outboard outboard sailing on a hull cooperating with a set of front fenders (l ia, 11b), the outboard is driven by a propeller power unit propelled underwater by a direct drive shaft (23) actuated by an indirect drive shaft (24), on an engine propulsion hull comprising anti-stacking (21) and anti-cavitation plates (22) positioned above the propeller (24) intended to position at the water level characterized in that the engine manufacturer position is lowered under water, the hull engine is dressed with a load-bearing wing (10) attached to the front on the hull of the hull direct shaft (23), a deflection ring (80) attached above the anti-stack (21) and anti-cavitation (22) plates and at the front and the hull of the indirect drive shaft (24) , a hydrodynamic penetration profile attached fitted to the front of the hull of the drive shaft in direct (24), occupying the space at the front of the engine between the top of the stacking plates (21) and anti cavitation (22) and the bottom of the deflection ring (80), the rear of the hull is equipped to the height of the placement of the deflection ring (80) of a deflection plate (90). It is clear that many variants may possibly be combined here can be made without ever departing from the scope of the invention as defined below.

Claims

REVENDICATIONS
1 - Ensemble hydrodynamique portant arrière de hors-bord naviguant sur une coque coopérant avec un jeu d'ailes avant (l ia, 11b), le hors-bord est mu par un ensemble moteur à hélice sous l'eau propulsée par un arbre moteur direct (23) actionné par un arbre moteur indirect (24), sur une carène de propulsion moteur comprenant des plaques anti gerbage (21) et anti cavitation (22) positionnées au-dessus de l'hélice (20) destinées à se positionner au niveau de l'eau caractérisé en ce que la position moteur constructeur est abaissée sous l'eau, la carène moteur est habillé d'une aile portante (10) rapportée à l'avant sur l'ogive de carène d'arbre direct (23), d'une couronne de déflection (80) rapportée au-dessus des plaques anti gerbage (21) et anti cavitation (22) et à l'avant et de la carène de l'arbre moteur indirect (24), d'un profil de pénétration hydrodynamique rapporté emboîté à l'avant de la carène de l'arbre moteur indirect (24), occupant l'espace à l'avant du moteur entre le haut des plaques anti gerbage (21) et anti cavitation (22) et le bas de la couronne de déflection (80), l'arrière de la coque est équipé à hauteur du placement de la couronne de déflection (80) d'une plaque de déflection (90). 1 - Hydrodynamic assembly carrying outboard outboard sailing on a hull cooperating with a set of front fenders (l ia, 11b), the outboard is driven by a propeller underwater propeller powered by a motor shaft direct (23) actuated by an indirect drive shaft (24), on a motor propulsion hull comprising anti-stacking plates (21) and anti-cavitation (22) positioned above the propeller (20) intended to be positioned at the water level characterized in that the engine manufacturer position is lowered under water, the engine hull is dressed with a load-bearing wing (10) attached to the front on the direct shaft hull ogive (23). ), a deflection ring (80) attached above the anti-stack (21) and anti-cavitation plates (22) and at the front and the hull of the indirect drive shaft (24), a fitted hydrodynamic penetration profile fitted at the front of the hull of the indirect drive shaft (24), occupying the space at the front of the engine between the top of the stacking plates (21) and anti cavitation (22) and the bottom of the deflection ring (80), the rear of the hull is equipped to the height of the deflection ring (80) ) a deflection plate (90).
PCT/FR2018/000210 2017-09-11 2018-09-04 Rear supporting hydrodynamic assembly of an outboard motor for a lowered motor position WO2019048745A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU2018330620A AU2018330620A1 (en) 2017-09-11 2018-09-04 Rear supporting hydrodynamic assembly of an outboard motor for a lowered motor position
CA3075500A CA3075500A1 (en) 2017-09-11 2018-09-04 Rear supporting hydrodynamic assembly of an outboard motor for a lowered motor position
EP18779737.8A EP3681790B1 (en) 2017-09-11 2018-09-04 Rear supporting hydrodynamic assembly of an outboard motor for a lowered motor position

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR17/70947 2017-09-11
FR1770947A FR3070962B1 (en) 2017-09-11 2017-09-11 OUTBOARD REAR BEARING HYDRODYNAMIC ASSEMBLY
FR17/01178 2017-11-15
FR1701178A FR3073489B1 (en) 2017-11-15 2017-11-15 HYDRODYNAMIC ASSEMBLY REAR OUTBOARD FOR SLOW MOTOR POSITION

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AU (1) AU2018330620A1 (en)
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Citations (4)

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US3804048A (en) * 1972-03-17 1974-04-16 Dynafoil Hydrofoil watercraft
GB2091646A (en) * 1981-01-27 1982-08-04 Eurovinil Ind Spa Hydrofoil Craft
US20090104825A1 (en) * 2005-08-22 2009-04-23 Honda Motor Co., Ltd. Boat propulsion engine
WO2016009409A1 (en) * 2014-07-17 2016-01-21 Hydros Innovation Sa Motor boat with retractable foils

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GB981977A (en) * 1963-05-31 1965-02-03 Floyd Pickens Ellzey Improvements relating to water craft and propulsion units therefor
US3199483A (en) * 1963-06-03 1965-08-10 Floyd P Ellzey Multi-use for hydrofoil supported displacement vessel
US4744779A (en) * 1986-12-04 1988-05-17 Ferrero & Wepfer Outboard motor cavitation plate extension
US4875882A (en) * 1988-08-30 1989-10-24 Plitt Cheryl A Splash guard for outboard motor

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
US3804048A (en) * 1972-03-17 1974-04-16 Dynafoil Hydrofoil watercraft
GB2091646A (en) * 1981-01-27 1982-08-04 Eurovinil Ind Spa Hydrofoil Craft
US20090104825A1 (en) * 2005-08-22 2009-04-23 Honda Motor Co., Ltd. Boat propulsion engine
WO2016009409A1 (en) * 2014-07-17 2016-01-21 Hydros Innovation Sa Motor boat with retractable foils

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EP3681790A1 (en) 2020-07-22
EP3681790B1 (en) 2023-04-05
AU2018330620A1 (en) 2020-04-30
CA3075500A1 (en) 2019-03-14

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