WO1988001587A1 - Nautical craft with hybrid carrying structure - Google Patents

Nautical craft with hybrid carrying structure Download PDF

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Publication number
WO1988001587A1
WO1988001587A1 PCT/FR1987/000330 FR8700330W WO8801587A1 WO 1988001587 A1 WO1988001587 A1 WO 1988001587A1 FR 8700330 W FR8700330 W FR 8700330W WO 8801587 A1 WO8801587 A1 WO 8801587A1
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WO
WIPO (PCT)
Prior art keywords
nautical
nautical craft
craft according
floats
float
Prior art date
Application number
PCT/FR1987/000330
Other languages
French (fr)
Inventor
Evelyne Eischen
Original Assignee
Societe Plastirem Sarl
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Filing date
Publication date
Application filed by Societe Plastirem Sarl filed Critical Societe Plastirem Sarl
Publication of WO1988001587A1 publication Critical patent/WO1988001587A1/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 
    • B63B34/00—Vessels specially adapted for water sports or leisure; Body-supporting devices specially adapted for water sports or leisure
    • B63B34/10—Power-driven personal watercraft, e.g. water scooters; Accessories therefor

Definitions

  • the present invention relates to a nautical vehicle with a hybrid bearing structure.
  • Patent application FR.A.2439603 and certificate of addition FR.A.2474434 propose an improvement in the form of a front monohull and two rear skis, the whole being powered by an engine or, incidentally, by a sail.
  • the engine is either in the front position relative to the user, which prevents any gauging and requires flat navigation, or in the rear position vis-à-vis the user, which causes, in the absence of any rib correctly positioned with respect to the gauging point and of an adequate length, directional instability and a large bearing surface which causes the depression in the turns by the friction which it generates.
  • the nautical craft according to the invention aims to remedy these drawbacks.
  • This invention as characterized in the claims, solves the problem of creating a nautical device with a raised cockpit, similar to that of a motorcycle, capable of reaching high speeds and evolving quickly with very short radii of gyration, while offering good stability and good swell resistance.
  • the hybrid nautical craft is mainly characterized in that it comprises a carrying structure, consisting of a monohull extended towards the rear by two floats located on either side of the transom engine carrier .
  • the cockpit is articulated longitudinally with respect to the supporting structure, with limitation of the amplitude by shock absorbers.
  • the monocoque part of the supporting structure has a V-shaped section, extended on the sides by a concave curvature in a seagull wing, and the profile of this section flattens as it approaches the fictitious transverse plane, passing through the point of die gauging.
  • the submerged part of the supporting structure is, from a section located at a distance from the front corresponding to 1/3 of the total length of the supporting structure, offset inwards and outwards to form four longitudinal steps, delimiting two parallel pads extending over the entire length of the floats.
  • the length of the floats represents 1/3 of the total length of the supporting structure, or half the length of the monocoque part.
  • Each skate has a water ski structure having, on the one hand, a portion curved longitudinally rearward and downward, and, on the other hand, a width corresponding to approximately half that of the floats.
  • each pad is positioned directly above the inner edge of the corresponding float.
  • the floats are raised on each side from the step delimiting externally each skate and thinned longitudinally towards the rear.
  • This thinned part has, on its upper face, a longitudinal reinforcing rib.
  • the engine carrier transom (5) is located a very short distance from the planing point
  • Each float is surmounted, on the front, by a watertight trunk which can, according to a particular embodiment, support a passenger seat.
  • the advantages obtained thanks to this invention consist essentially in that it makes it possible to obtain, in particular with a machine of the water motorcycle type, good penetration in the swell, taking into account the monocoque shape of its front part. , and very high speeds, also taking into account the particular shape of its rear part, while allowing very short turns to be obtained, given the position of the propeller shaft relative to the center of gravity of the assembly . This in acceptable comfort conditions, taking into account the cushioned joint from the cockpit to the hull.
  • FIG. 1 shows a side view of the water bike according to the invention.
  • FIG. 2 shows a top view of the water bike, according to the invention.
  • FIG. 3 shows a bottom view, in perspective, of the supporting structure according to the invention.
  • FIG. 4 shows a front view of the supporting structure according to the invention.
  • FIG. 5 shows a cross-sectional view along BB of the supporting structure.
  • FIG. 6 shows a cross-sectional view along CC of the supporting structure.
  • FIG. 7 shows a perspective view of the rear of the water bike, according to the invention.
  • the figures represent a nautical machine of the water motorcycle type, provided with a propulsion engine, essentially comprising a waterproof bearing structure of the hybrid type consisting of a monohull 1 extended rearwards by two floats 2a and 2b located on either side of the engine carrier rear panel 5.
  • This bearing structure supports a cockpit 3 and has, on its submerged part, two pads spaced 1g and 1h, intended to obtain a nautical vehicle with low draft and at high speed.
  • the waterproof supporting structure supports a cockpit 3, consisting of a handlebar and a single or two-seater seat, housed behind a streamlined fairing, which protects the pilot from wind and spray.
  • the propulsion motor 9 is fixed, at the rear of the engine carrier plate 5, between the two floats 2a and 2b, so that the pivot axis of the propeller is located approximately 1/3 from the rear .
  • the aim of this position of the engine is to bring the axis of the engine pivot closer to the center of gravity of the assembly and to the planing point (A), which allows short turns to be taken at high speed.
  • the cockpit 3 is, by means of a journal 4, articulated longitudinally with respect to the bearing structure, with limitation of the amplitude by shock absorbers 6 mounted at the front.
  • Each float 2a and 2b thinned longitudinally towards the rear, comprises, on its upper face, a longitudinal reinforcing rib 7, so that this flexible part does not break under the effect of alternating bending.
  • each float 2a and 2b is surmounted, on the front, by a sealed trunk 8, which can serve as a tool box and / or a fuel tank, and support a passenger seat.
  • the bow of monohull 1 has a bow to break the waves.
  • This monohull part has a V-shaped section 1a, extended on the sides by a concave curvature in a seagull wing 1b, and the profile of this section flattens when approaching the fictitious transverse plane passing through the planing point A parallel to the transverse sectional plane along BB.
  • the monohull is, on its submerged part, offset laterally inwards and outwards to form four longitudinal steps 1c, 1d, 1e, 1f delimiting two parallel skates 1g and 1h.
  • These pads, 1g and 1h extend over the entire length of the floats by presenting a water ski structure, having a bearing surface of sufficient width to give the vehicle good lateral stability combined with a very low hull resistance.
  • the longitudinal reinforcing rib 7, molded on the upper part of the floats, is in the form of a fuse.
  • the waterproof trunk 8 can support a passenger seat.
  • the supporting structure is made of molded material (glass fibers, resins ).
  • the bearing surface, located at the front of the monocoque 1, can be lifted by hydrodynamic effect to facilitate planing.
  • the bearing structure, or hull At equilibrium, the bearing structure, or hull, is immersed in water, and, at the first accelerations, it tilts backwards by lifting the bow, relative to its center of gravity, to hover over the water over a little over a third of the length of the skates 1g and 1h, as soon as a speed minimum limit is reached, as if it were applied on water skis.
  • the width of the surface of the skids 1g and 1h is sufficient to give the machine good lift and good lateral stability.
  • the nautical craft according to the invention can evolve on rough water, because the waves are broken by the bow of the bow of the monohull 1, and the shocks are absorbed by the shock absorbers 6.
  • the nautical device according to the invention finds its main application in water motorcycles, but it can also be used in the field of motor or sailing boats in general, subject to some specific adaptations.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Motorcycle And Bicycle Frame (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

The nautical craft with hybrid carrying structure comprises a water-tight carrying structure consisting of a single hull (1) prolonged rearwardly by two floats (2a) situated on either side of the engine carrier plate (5), supporting a piloting station (3) which is longitudinally hinged with respect to the single hull (1) with limitation of the amplitude by means of a damper (6).

Description

Engin nautique à structure portante hybride Nautical craft with hybrid bearing structure
La présente invention concerne un engin nautique à structure portante hybride.The present invention relates to a nautical vehicle with a hybrid bearing structure.
On connaît déjà, dans les domaines des loisirs, du sauvetage ou de la surveillance des plages, des engins nautiques à moteur hors-bord 5 ou in- bord capables d'atteindre rapidement un lieu quelconque d'un plan d'eau. Il s'agit généralement d'engins à monocoque légère, à l'arrière de laquelle est monté le système de propulsion.We already know, in the fields of leisure, rescue or beach surveillance, nautical devices with outboard motor 5 or inboard capable of quickly reaching any place of a body of water. They are generally light monohull craft, at the rear of which is mounted the propulsion system.
On connaît aussi des engins nautiques à moteurs, dont le poste de pilotage s'apparente à celui d'une motocyclette. Ces engins sont généralement constitués d'une structure flottante, monocoque ou bi-coque, supportant un poste de pilotage et d'un moteur, situé à l'arrière, commandé depuis le poste de pilotage par l'intermédiaire d'un guidon.There are also known motorized nautical devices, the cockpit of which is similar to that of a motorcycle. These machines generally consist of a floating structure, monohull or twin-hull, supporting a cockpit and an engine, located at the rear, controlled from the cockpit by means of a handlebar.
Ainsi on a connaissance d'un engin nautique à moteur, décrit dans l e brevet FR . A1.2549005 comprenant une coque, un poste de pilotage et un moyen de propulsion situé à l'arrière de la coque. Il s'agit là du même principe que le bateau, la coque est monolithique et ne fait pas appel à des flotteurs latéraux avec patins. Un tel engin est relativement long à dé jauger, à puissance égale, le rayon de giration est légèrement diminué car les dimensions hors tout par rapport à un bateau sont réduites, mais il reste comparable. De plus, lors de virages à grande vitesse, il y a dérive latérale, perte de stabilité et enfoncement par perte de portance arrière. Un tel engin illustre les inconvénients de l'art antérieur, auquel il faut rajouter celui introduit par la présence de nervures extérieures qui conduisent à une surface d'appui de grande largeur.Thus we are aware of a motorized nautical vehicle, described in the patent FR. A1.2549005 comprising a hull, a cockpit and a means of propulsion situated aft of the hull. This is the same principle as the boat, the hull is monolithic and does not use lateral floats with skids. Such a device is relatively long to gauge, at equal power, the turning radius is slightly reduced because the overall dimensions compared to a boat are reduced, but it remains comparable. In addition, when cornering at high speed, there is lateral drift, loss of stability and depression by loss of rear lift. Such a machine illustrates the drawbacks of the prior art, to which must be added that introduced by the presence of external ribs which lead to a very wide bearing surface.
La demande de brevet FR.A.2439603 et le certificat d'addition FR.A.2474434 proposent une amélioration sous la forme d'une monocoque avant et deux skis arrières, l'ensemble étant propulsé par un moteur ou, accessoirement, par une voile. Dans la variante motorisée, le moteur est soit en position avant par rapport à l'utilisateur, ce qui empêche tout dé jaugeage et impose une navigation à plat, soit en position arrière vis-à-vis de l'utilisateur, ce qui provoque, en l'absence de toute nervure correctement disposée par rapport au point de dé jaugeage et d'une longueur adéquate, une instabilité directionnelle et une surface d'appui importante qui provoque l'enfoncement dans les virages par le frottement qu'elle engendre.Patent application FR.A.2439603 and certificate of addition FR.A.2474434 propose an improvement in the form of a front monohull and two rear skis, the whole being powered by an engine or, incidentally, by a sail. In the motorized variant, the engine is either in the front position relative to the user, which prevents any gauging and requires flat navigation, or in the rear position vis-à-vis the user, which causes, in the absence of any rib correctly positioned with respect to the gauging point and of an adequate length, directional instability and a large bearing surface which causes the depression in the turns by the friction which it generates.
Un tel dispositif ne permet pas des performances intéressantes et, en tout état de cause, qui se démarquent de celles de l'art antérieur.Such a device does not allow interesting performances and, in any event, which differ from those of the prior art.
On comprend cela d'autant mieux que ce dispositif est prévu pour être motorisé ou être mû par une voile ; or, ces deux modes de propulsion n'ont pas recours aux mêmes profils de carènes.This is all the better understood since this device is designed to be motorized or to be driven by a sail; however, these two modes of propulsion do not use the same hull profiles.
L'engin nautique, selon l'invention, vise à remédier à ces inconvénients. Cette invention, telle qu'elle est caractérisée dans les revendications, résout le problème consistant à créer un engin nautique à poste de pilotage surélevé, analogue à celui d'une moto, capable d'atteindre de grandes vitesses et d'évoluer rapidement avec des rayons de giration très courts, tout en offrant une bonne stabilité et une bonne tenue à la houle.The nautical craft according to the invention aims to remedy these drawbacks. This invention, as characterized in the claims, solves the problem of creating a nautical device with a raised cockpit, similar to that of a motorcycle, capable of reaching high speeds and evolving quickly with very short radii of gyration, while offering good stability and good swell resistance.
L'engin nautique hybride, selon l'invention, se caractérise principalement en ce qu'il comporte une structure portante, constituée d'une monocoque prolongée vers l'arrière par deux flotteurs situés de part et d'autre du tableau arrière porte-moteur. Le poste de pilotage est articulé longitudinalement par rapport à la structure portante, avec limitation de l'amplitude par amortisseurs.The hybrid nautical craft, according to the invention, is mainly characterized in that it comprises a carrying structure, consisting of a monohull extended towards the rear by two floats located on either side of the transom engine carrier . The cockpit is articulated longitudinally with respect to the supporting structure, with limitation of the amplitude by shock absorbers.
La partie monocoque de la structure portante a une section en V, prolongée sur les côtés par une courbure concave en aile de mouette, et le profil de cette section s'aplanit à l'approche du plan transversal fictif, passant par le point de dé jaugeage.The monocoque part of the supporting structure has a V-shaped section, extended on the sides by a concave curvature in a seagull wing, and the profile of this section flattens as it approaches the fictitious transverse plane, passing through the point of die gauging.
La partie immergée de la structure portante est, à partir d'une section située à une distance de l'avant correspondant à 1/3 de la l o n g u e u r totale de la structure portante, décalée vers l'intérieur et vers l'extérieur pour former quatre redans longitudinaux, délimitant deux patins parallèles se prolongeant sur toute la longueur des flotteurs.The submerged part of the supporting structure is, from a section located at a distance from the front corresponding to 1/3 of the total length of the supporting structure, offset inwards and outwards to form four longitudinal steps, delimiting two parallel pads extending over the entire length of the floats.
La longueur des flotteurs représente le 1/3 de la longueur totale de la structure portante, ou la moitié de la longueur de la partie monocoque. Chaque patin présente une structure de ski nautique ayant, d'une part, une partie incurvée longitudinalement vers l'arrière et vers le bas, et, d'autre part, une largeur correspondant environ à la moitié de celle des flotteurs.The length of the floats represents 1/3 of the total length of the supporting structure, or half the length of the monocoque part. Each skate has a water ski structure having, on the one hand, a portion curved longitudinally rearward and downward, and, on the other hand, a width corresponding to approximately half that of the floats.
Le bord intérieur de chaque patin est disposé à l'aplomb du bord intérieur du flotteur lui correspondant .The inner edge of each pad is positioned directly above the inner edge of the corresponding float.
Les flotteurs sont relevés de chaque côté à partir du redan délimitant extérieurement chaque patin et amincis longitudinalement vers l'arrière. Cette partie amincie comporte, sur sa face supérieure, une nervure longitudinale de renfort.The floats are raised on each side from the step delimiting externally each skate and thinned longitudinally towards the rear. This thinned part has, on its upper face, a longitudinal reinforcing rib.
Le tableau arrière porte moteur (5) est situé à une distance très courte du point de déjaugeageThe engine carrier transom (5) is located a very short distance from the planing point
(A).(AT).
Chaque flotteur est surmonté, sur l'avant, d'un coffre étanche qui peut, selon un mode de réalisation particulier, supporter un siège pour passager. Les avantages obtenus grâce à cette invention consistent essentiellement en ce qu'elle permet d'obtenir, en particulier avec un engin du type moto d'eau, une bonne pénétration dans la houle, compte-tenu de la-forme monocoque de sa partie avant, et des vitesses très élevées, compte tenu également de la forme particulière de sa partie arrière, tout en permettant l'obtention de virages très courts, étant donné la position du puits de l'hélice par rapport au centre de gravité de l'ensemble. Ceci dans des conditions de confort acceptables, compte-tenu de l'articulation amortie du poste de pilotage par rapport à la coque.Each float is surmounted, on the front, by a watertight trunk which can, according to a particular embodiment, support a passenger seat. The advantages obtained thanks to this invention consist essentially in that it makes it possible to obtain, in particular with a machine of the water motorcycle type, good penetration in the swell, taking into account the monocoque shape of its front part. , and very high speeds, also taking into account the particular shape of its rear part, while allowing very short turns to be obtained, given the position of the propeller shaft relative to the center of gravity of the assembly . This in acceptable comfort conditions, taking into account the cushioned joint from the cockpit to the hull.
D'autres caractéristiques et avantages apparaitront dans la description qui va suivre d'un mode de réalisation d'un engin nautique de type moto d'eau, selon l'invention, donné à titre d'exemple non limitatif au regard des dessins annexés sur lesquels:Other characteristics and advantages will appear in the following description of an embodiment of a nautical machine of the water motorcycle type, according to the invention, given by way of nonlimiting example with regard to the drawings appended to which:
- la figure 1 représente une vue de côté de la moto d'eau selon l'invention.- Figure 1 shows a side view of the water bike according to the invention.
- la figure 2 représente une vue de dessus de la moto d'eau, selon l'invention.- Figure 2 shows a top view of the water bike, according to the invention.
- la figure 3 représente une vue de dessous, en perspective, de la structure portante selon l'invention.- Figure 3 shows a bottom view, in perspective, of the supporting structure according to the invention.
- la figure 4 représente une vue de devant de la structure portante selon l'invention.- Figure 4 shows a front view of the supporting structure according to the invention.
- la figure 5 représente une vue en coupe transversale selon BB de la structure portante.- Figure 5 shows a cross-sectional view along BB of the supporting structure.
- la figure 6 représente une vue en coupe transversale selon CC de la structure portante.- Figure 6 shows a cross-sectional view along CC of the supporting structure.
- la figure 7 représente une vue en perspective de l'arrière de la moto d'eau, selon l'invention.- Figure 7 shows a perspective view of the rear of the water bike, according to the invention.
Les figures représentent un engin nautique de type moto d'eau, muni d'un moteur de propulsion, comprenant essentiellement une structure portante étanche de type hybride constituée d'une monocoque 1 prolongée vers l'arrière par deux flotteurs 2a et 2b situés de part et d'autre du tableau arrière porte-moteur 5.The figures represent a nautical machine of the water motorcycle type, provided with a propulsion engine, essentially comprising a waterproof bearing structure of the hybrid type consisting of a monohull 1 extended rearwards by two floats 2a and 2b located on either side of the engine carrier rear panel 5.
Cette structure portante soutient un poste de pilotage 3 et présente, sur sa partie immergée, deux patins espacés 1g et 1h, destinés à obtenir un véhicule nautique à faible tirant d'eau et à grande vitesse.This bearing structure supports a cockpit 3 and has, on its submerged part, two pads spaced 1g and 1h, intended to obtain a nautical vehicle with low draft and at high speed.
Conformément aux figures 1 et 2, la structure portante étanche soutient un poste de pilotage 3, constitué d'un guidon et d'un siège monoplace ou bi-place, logé derrière un carénage profilé, qui protège le pilote du vent et des embruns. Le moteur de propulsion 9 est fixé, à l'arrière du plateau porte-moteur 5, entre les deux flotteurs 2a et 2b, de façon que l'axe de pivot de l'hélice se situe à environ 1/3 de l'arrière. Cette position du moteur a pour but de rapprocher l'axe du pivot du moteur du centre de gravité de l'ensemble et du point de déjaugeage (A), ce qui permet la prise de virages courts à grande vitesse.In accordance with FIGS. 1 and 2, the waterproof supporting structure supports a cockpit 3, consisting of a handlebar and a single or two-seater seat, housed behind a streamlined fairing, which protects the pilot from wind and spray. The propulsion motor 9 is fixed, at the rear of the engine carrier plate 5, between the two floats 2a and 2b, so that the pivot axis of the propeller is located approximately 1/3 from the rear . The aim of this position of the engine is to bring the axis of the engine pivot closer to the center of gravity of the assembly and to the planing point (A), which allows short turns to be taken at high speed.
La mise en service et la commande de la moto d'eau, en cours de fonctionnement, sont assurées par des moyens connus de l'état actuel de la technique, de sorte que le pilote conduit l'engin nautique comme une moto terrestre, à partir du poste de pilotage 3.The putting into service and the control of the water motorbike, during operation, are ensured by means known from the current state of the art, so that the pilot drives the water craft like a land motorbike, from the cockpit 3.
Le poste de pilotage 3 est, par l'intermédiaire d'un tourillon 4, articulé longitudinalement par rapport à la structure portante, avec limitation de l'amplitude par des amortisseurs 6 montés à l ' a v a n t .The cockpit 3 is, by means of a journal 4, articulated longitudinally with respect to the bearing structure, with limitation of the amplitude by shock absorbers 6 mounted at the front.
Les effets de la houle sont donc, en grande partie, absorbés par cet ensemble constitué des amortisseurs 6 et du tourillon 4, ce qui offre ainsi un certain confort au pilote. Chaque flotteur 2a et 2b, aminci longitudinalement vers l'arrière, comporte, sur sa face supérieure, une nervure longitudinale de renfort 7, de façon que cette partie souple ne se rompe pas sous l'effet de flexions alternées.The effects of the swell are therefore, for the most part, absorbed by this assembly made up of the shock absorbers 6 and the journal 4, which thus offers a certain comfort to the pilot. Each float 2a and 2b, thinned longitudinally towards the rear, comprises, on its upper face, a longitudinal reinforcing rib 7, so that this flexible part does not break under the effect of alternating bending.
Selon un mode de réalisation, chaque flotteur 2a et 2b est surmonté, sur l'avant, d'un coffre étanche 8, pouvant servir de caisse à outils ou/et de réservoir d'essence, et supporter un siège pour passager.According to one embodiment, each float 2a and 2b is surmounted, on the front, by a sealed trunk 8, which can serve as a tool box and / or a fuel tank, and support a passenger seat.
Examinons les figures 3, 4, 5 et 6, concernant plus particulièrement la structure portante.Let us examine Figures 3, 4, 5 and 6, concerning more particularly the bearing structure.
On remarque que la proue de la monocoque 1 présente une étrave permettant de briser les vagues. Cette partie monocoque a une section en V 1a, prolongée sur les côtés par une courbure concave en aile de mouette 1b, et le profil de cette section s'aplanit à l'approche du plan transversal fictif passant par le point de déjaugeage A parallèlement au plan de coupe transversale suivant BB. Un peu à l'avant du point de dé jaugeage A, à une section située à une distance de l'avant correspondant à 1/3 de la structure portante, la monocoque est, sur sa partie immergée, décalée latéralement vers l'intérieur et vers l'extérieur pour former quatre redans longitudinaux 1c, 1d, 1e, 1f délimitant leux patins parallèles 1g et 1h. Ces patins, 1g et 1h, se prolongent sur toute la longueur des flotteurs en présentant une structure de ski nautique, ayant une surface portante de largeur suffisante pour conférer au véhicule une bonne stabilité latérale combinée à une très faible résistance de carène.Note that the bow of monohull 1 has a bow to break the waves. This monohull part has a V-shaped section 1a, extended on the sides by a concave curvature in a seagull wing 1b, and the profile of this section flattens when approaching the fictitious transverse plane passing through the planing point A parallel to the transverse sectional plane along BB. A little at the front of the gauging point A, at a section located at a distance from the front corresponding to 1/3 of the supporting structure, the monohull is, on its submerged part, offset laterally inwards and outwards to form four longitudinal steps 1c, 1d, 1e, 1f delimiting two parallel skates 1g and 1h. These pads, 1g and 1h, extend over the entire length of the floats by presenting a water ski structure, having a bearing surface of sufficient width to give the vehicle good lateral stability combined with a very low hull resistance.
En examinant la figure 7, on remarque que l'arrière des flotteurs 2a et 2b, aminci longitudinalement vers l'arrière, est relevé de chaque côté à partir du redan 1c ou 1e, délimitant chaque patin 1g et 1h dont le bord se trouve à l'aplomb du bord intérieur du flotteur.By examining FIG. 7, it can be seen that the rear of the floats 2a and 2b, thinned longitudinally towards the rear, is raised on each side from the step 1c or 1e, delimiting each shoe 1g and 1h whose edge is at plumb with the inside edge of the float.
La nervure longitudinale de renfort 7, moulée sur la partie supérieure des flotteurs, est en forme de fuse au. Selon un mode de réalisation, le coffre étanche 8 peut supporter un siège pour passager.The longitudinal reinforcing rib 7, molded on the upper part of the floats, is in the form of a fuse. According to one embodiment, the waterproof trunk 8 can support a passenger seat.
La structure portante est réalisée en matière moulée (fibres de verre, résines...).The supporting structure is made of molded material (glass fibers, resins ...).
La conception de la structure portante et la position du moteur de propulsion 9, placé à l'arrière du plateau porte moteur 5 à une distance très courte du point de déjaugeage A, expliquent le fait que le véhicule nautique, selon l'invention, soit rapide et évolutif. La surface portante, située à l'avant de la monocoque 1, peut être soulevée par effet hydrodynamique pour faciliter le déjaugeage. A l'équilibre, la structure portante, ou coque, est plongée dans l'eau, et, aux premières accélérations, elle s'incline sur l'arrière en soulevant la proue, par rapport à son centre de gravité, pour venir planer sur l'eau sur un peu plus d'un tiers de la longueur des patins 1g et 1h, dès qu'une vitesse limite minimale est atteinte, comme si elle était mbntée sur des skis nautiques. La largeur de la surface des patins 1g et 1h est suffisante pour conférer à l'engin une bonne portance et une bonne stabilité latérale.The design of the carrying structure and the position of the propulsion motor 9, placed at the rear of the engine carrier plate 5 at a very short distance from the planing point A, explain the fact that the nautical vehicle according to the invention is fast and scalable. The bearing surface, located at the front of the monocoque 1, can be lifted by hydrodynamic effect to facilitate planing. At equilibrium, the bearing structure, or hull, is immersed in water, and, at the first accelerations, it tilts backwards by lifting the bow, relative to its center of gravity, to hover over the water over a little over a third of the length of the skates 1g and 1h, as soon as a speed minimum limit is reached, as if it were applied on water skis. The width of the surface of the skids 1g and 1h is sufficient to give the machine good lift and good lateral stability.
Compte-tenu du faible volume de carène, et de la courte distance, séparant l'axe de pivotement de l'hélice du centre de gravité de l'ensemble, il est possible de prendre, à hautes vitesses, des virages de court rayon, avec une dérive limitée par les redans 1c, 1d, 1e et 1f, délimitant les patins 1g et 1h. Les flotteurs 2a et 2b limitent le tirant d'eau, au profit de la forcé de poussée, ce qui permet l'obtention de vitesse élevée.Given the small volume of the hull, and the short distance separating the pivot axis of the propeller from the center of gravity of the assembly, it is possible to take short radius turns at high speeds, with a drift limited by steps 1c, 1d, 1e and 1f, delimiting pads 1g and 1h. The floats 2a and 2b limit the draft, in favor of the forced thrust, which makes it possible to obtain high speed.
L'engin nautique selon l'invention, peut évoluer sur des plans d'eau houleux, car les vagues sont brisées par l'étrave de la proue de la monocoque 1, et les chocs sont absorbés par les amortisseurs 6.The nautical craft according to the invention can evolve on rough water, because the waves are broken by the bow of the bow of the monohull 1, and the shocks are absorbed by the shock absorbers 6.
L'engin nautique selon l'invention, trouve sa principale application dans les motos d'eau, mais il peut être utilisé aussi dans le domaine des embarcations à moteur ou à voile en général, sous réserve, de quelques adaptations spécifiques. The nautical device according to the invention finds its main application in water motorcycles, but it can also be used in the field of motor or sailing boats in general, subject to some specific adaptations.

Claims

R e ve n d i c a t i o n s R e ve ndications
1. Engin nautique hybride comportant une structure portante constituée d'une monocoque (1) à section en V (1a) prolongée sur les côtés par une courbure concave en aile de mouette (1b), cette monocoque se prolongeant à l'arrière par deux flotteurs1. Hybrid nautical craft comprising a carrying structure constituted by a monohull (1) with V section (1a) extended on the sides by a concave curvature in seagull wing (1b), this monohull extending at the rear by two floats
(2a et 2b), un poste de pilotage (3) et un moteur de propulsion (9), caractérisé en ce que la longueur des flotteurs (2a et 2b) représente le 1/3 de la longueur totale de la structure protante et en ce que la partie immergée de la structure portante est, à partir d'une section située à une distance de l'avant correspondant à 1/3 de la longueur de la structure portante, décalée verticalement vers l'intérieur et vers l'extérieur pour former quatre redans longitudinaux (1c, 1d, 1e, If) délimitant deux patins (1g, 1h) paralle les, se prolongeant sur toute la longueur des flotteurs.(2a and 2b), a cockpit (3) and a propulsion engine (9), characterized in that the length of the floats (2a and 2b) represents 1/3 of the total length of the protective structure and in what the submerged part of the supporting structure is, from a section located at a distance from the front corresponding to 1/3 of the length of the supporting structure, shifted vertically inwards and outwards to form four longitudinal steps (1c, 1d, 1e, If) delimiting two pads (1g, 1h) parallel to them, extending over the entire length of the floats.
2. Engin nautique selon la revendication 1, caractérisé en ce que le profil à section en V (1a) prolongé sur les côtés par la courbure concave en aile de mouette (1b), s'aplanit à l'approche du plan transversal fictif passant par le point de déjaugeage (A).2. Nautical craft according to claim 1, characterized in that the V-section profile (1a) extended on the sides by the concave curvature in seagull wing (1b), flattens when approaching the passing imaginary transverse plane by the planing point (A).
3. Engin nautique selon l'une quelconque des revendications 1 et 2, caractérisé en ce que le poste de pilotage3. Nautical craft according to any one of claims 1 and 2, characterized in that the cockpit
(3) est articulé longitudinalement par rapport à la structure portante avec limitation de l'amplitude par amortisseurs (6). (3) is articulated longitudinally with respect to the supporting structure with limitation of the amplitude by shock absorbers (6).
4. Engin nautique selon la revendication 1, caractérisé en ce que chaque patin (1g, 1h) présente une structure de ski nautique, ayant d'une part, une partie incurvée longitudinalement vers l'arrière et vers le bas, et d'autre part, une largeur correspondant à la moitié de celle du flotteur (2a, 2b).4. Nautical machine according to claim 1, characterized in that each skate (1g, 1h) has a water skiing structure, having on the one hand, a part curved longitudinally rearward and downward, and on the other share, a width corresponding to half that of the float (2a, 2b).
5. Engin nautique selon la revendication 1, caractérisé en ce que le bord intérieur d'un patin (1g, 1h) se trouve à l'aplomb du bord intérieur du flotteur (2a ou 2b) lui correspondant.5. Nautical craft according to claim 1, characterized in that the inner edge of a pad (1g, 1h) is plumb with the inner edge of the float (2a or 2b) corresponding to it.
ό. Engin nautique selon la revendication 1, caractérisé en ce que les flotteurs (2a et 2b) sont amincis longitudinalement vers l'arrière et relevés de chaque côté, vers l'extérieur, à partir du redan (1c ou 1e) délimitant chaque patin (1g, 1h).ό. Nautical craft according to claim 1, characterized in that the floats (2a and 2b) are thinned longitudinally towards the rear and raised on each side, towards the outside, from the step (1c or 1e) delimiting each skate (1g , 1h).
7. Engin nautique selon la revendication 1, caractérisé en ce que chaque flotteur (2a, 2b) comporte, à sa partie supérieure, une nervure longitudinale de renfort 7.7. Nautical craft according to claim 1, characterized in that each float (2a, 2b) comprises, at its upper part, a longitudinal reinforcing rib 7.
8. Engin nautique selon la revendication 1, caractérisé en ce que chaque flotteur (2a, 2b) est surmonté, sur l'avant, d'un coffre étanche (8).8. Nautical craft according to claim 1, characterized in that each float (2a, 2b) is surmounted, on the front, by a sealed trunk (8).
9. Engin nautique selon la revendication 8, caractérisé en ce que chaque coffre (8) supporte un siège pour passager.9. Nautical craft according to claim 8, characterized in that each trunk (8) supports a passenger seat.
10. Engin nautique selon la revendication 1, caractérisé en ce que le tableau arrière porte moteur (5) est situé à une distance tr è s courte du point de déjaugeage (A). 10. Nautical craft according to claim 1, characterized in that the transom engine door (5) is located at a very short distance from the planing point (A).
PCT/FR1987/000330 1986-08-25 1987-08-25 Nautical craft with hybrid carrying structure WO1988001587A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8612104A FR2603015B1 (en) 1986-08-25 1986-08-25 HYBRID CARRIER NAUTICAL VEHICLE
FR86/12104 1986-08-25

Publications (1)

Publication Number Publication Date
WO1988001587A1 true WO1988001587A1 (en) 1988-03-10

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AU (1) AU7851987A (en)
FR (1) FR2603015B1 (en)
WO (1) WO1988001587A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002000494A1 (en) * 2000-06-26 2002-01-03 Yamaha Hatsudoki Kabushiki Kaisha Sporting water vehicle
FR2906216A1 (en) * 2006-09-25 2008-03-28 Frederic Vellutini Impact damping device for personal watercraft with articulated arm, has sliding systems sliding for provoking compression and releasing of spring and damper during navigation so as to absorb impact at handle bar of personal watercraft
US8555801B1 (en) 2011-01-31 2013-10-15 Bombardier Recreational Products Inc. Watercraft helm support structure and deck

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1794898A (en) * 1928-06-19 1931-03-03 Hillmann Hermann Float for hydroplanes, flying boats, and the like
US3036544A (en) * 1961-03-08 1962-05-29 Salvatore J Magri Water-craft
FR2439603A1 (en) * 1978-10-23 1980-05-23 Sanchez Ludovic Ski boat with motor - has extended skis towards back with outboard motor between them at front
FR2474434A2 (en) * 1978-10-23 1981-07-31 Sanchez Ludovic Lightweight one-man pleasure craft - has hollow shell ahead of two parallel surf board and converts to sailing or motor boat
FR2549005A1 (en) * 1983-07-01 1985-01-18 Sery Henri Nautical craft with engine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1794898A (en) * 1928-06-19 1931-03-03 Hillmann Hermann Float for hydroplanes, flying boats, and the like
US3036544A (en) * 1961-03-08 1962-05-29 Salvatore J Magri Water-craft
FR2439603A1 (en) * 1978-10-23 1980-05-23 Sanchez Ludovic Ski boat with motor - has extended skis towards back with outboard motor between them at front
FR2474434A2 (en) * 1978-10-23 1981-07-31 Sanchez Ludovic Lightweight one-man pleasure craft - has hollow shell ahead of two parallel surf board and converts to sailing or motor boat
FR2549005A1 (en) * 1983-07-01 1985-01-18 Sery Henri Nautical craft with engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002000494A1 (en) * 2000-06-26 2002-01-03 Yamaha Hatsudoki Kabushiki Kaisha Sporting water vehicle
US6422168B1 (en) * 2000-06-26 2002-07-23 Yamaha Hatsudoki Kabushiki Kaisha Sporting water vehicle
FR2906216A1 (en) * 2006-09-25 2008-03-28 Frederic Vellutini Impact damping device for personal watercraft with articulated arm, has sliding systems sliding for provoking compression and releasing of spring and damper during navigation so as to absorb impact at handle bar of personal watercraft
US8555801B1 (en) 2011-01-31 2013-10-15 Bombardier Recreational Products Inc. Watercraft helm support structure and deck

Also Published As

Publication number Publication date
FR2603015A1 (en) 1988-02-26
AU7851987A (en) 1988-03-24
FR2603015B1 (en) 1991-05-10

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