FR2651743A1 - Multi-hulled sports sailing boat of the "PROA" type, with a dismantleable main hull - Google Patents

Multi-hulled sports sailing boat of the "PROA" type, with a dismantleable main hull Download PDF

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Publication number
FR2651743A1
FR2651743A1 FR8911951A FR8911951A FR2651743A1 FR 2651743 A1 FR2651743 A1 FR 2651743A1 FR 8911951 A FR8911951 A FR 8911951A FR 8911951 A FR8911951 A FR 8911951A FR 2651743 A1 FR2651743 A1 FR 2651743A1
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France
Prior art keywords
main hull
prao
sheath
shells
shell
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Granted
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FR8911951A
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French (fr)
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FR2651743B1 (en
Inventor
Peyrot Des Gachons Arnaud
Jean-Baptiste
Paul
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PEYROT DES GACHONS ARNAUD
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PEYROT DES GACHONS ARNAUD
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Priority to FR8911951A priority Critical patent/FR2651743B1/en
Publication of FR2651743A1 publication Critical patent/FR2651743A1/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
    • B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/10—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
    • B63B1/12—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H9/00—Marine propulsion provided directly by wind power
    • B63H9/04—Marine propulsion provided directly by wind power using sails or like wind-catching surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B7/00—Collapsible, foldable, inflatable or like vessels
    • B63B7/02—Collapsible, foldable, inflatable or like vessels comprising only rigid parts
    • B63B7/04—Collapsible, foldable, inflatable or like vessels comprising only rigid parts sectionalised
    • 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
    • B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/10—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
    • B63B2001/102—Proas, or similar twin-hull vessels with one main hull and one smaller hull or floater, interconnected by one or more outrigger beams or the like
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Tents Or Canopies (AREA)

Abstract

Proa including, in particular, a main hull (1), a single float (2) located, when operating under sail, into the wind of the main hull (1), a structure (3) for connection between the said main hull (1) and the said float (2), characterised in that the main hull (1) consists of a sleeve (11) located at its longitudinal centre, and of two half-hulls (12) fitting together and aligning in the said sleeve (11) which are held, by any mechanical means whatsoever, symmetrically with respect to the longitudinal centre of the said main hull (1).

Description

La présente invention se rapporte, d'une manière générale, aux "Prao", ctest-à-dire aux voiliers à sens de marche réversible, globalement, hormis leurs voilures, symétriques par rapport à leurs centres longitudinaux, comportant une coque principale et un seul flotteur situé, lors de la marche desdits voiliers, au vent de ladite coque principale, avec une structure de liaison entre ledit flotteur et ladite coque principale. The present invention relates, in general, to "Prao", that is to say to sailboats with reversible direction of travel, generally, apart from their wings, symmetrical with respect to their longitudinal centers, comprising a main hull and a single float located, during the operation of said sailboats, upwind from said main hull, with a connecting structure between said float and said main hull.

Elle concerne plus particulièrement ceux de ces praos, qui, très légers, sont conçus pour une utilisation de loisir en bordure des rivages, exigeant de la part de leurs usagers une bonne aptitude aux sports marins et un attrait certain pour la vitesse à la voile. It relates more particularly to those of these praos, which, very light, are designed for leisure use along the shores, requiring on the part of their users a good aptitude for marine sports and a certain attraction for sailing speed.

Il est probable qu'un certain nombre d'amateurs de voile sportive et rapide, qui voudraient, notamment, naviguer en équipage, se contentent de la planche à voile qui, outre son faible coût, n'a pas les contraintes rebutantes, pour ces amateurs, de manutention et de transport, inhérentes à la majorité des voiliers multicoques de sport. It is likely that a certain number of lovers of sporty and fast sailing, who would like, in particular, to sail with a crew, are content with windsurfing which, in addition to its low cost, does not have the daunting constraints, for these amateurs, handling and transport, inherent in the majority of multihull sport sailboats.

La présente invention concerne, d'une manière générale, un prao qui, grâce à sa grande légèreté, lui assurant de hautes performances, et son extrème simplicité de réalisation lui permettant, outre d'être construit à faible coût, d'être démonté en un temps très court et d'avoir, après son démontage, des dimensions réduites, est précisément le bateau qui correspond à ce que recherchent ces amateurs de voile sportive et rapide. The present invention relates, in general, to a prao which, thanks to its great lightness, ensuring high performance, and its extreme simplicity of construction allowing it, in addition to being built at low cost, to be dismantled in a very short time and having, after disassembly, reduced dimensions, is precisely the boat that corresponds to what these lovers of sporty and fast sailing are looking for.

Ce prao qui est donc du genre comportant, notamment, une coque principale et un seul flotteur situé, lors de sa marche sous voile, au vent de ladite coque principale, avec une structure de liaison entre ledit flotteur et ladite coque principale, est caractérisé en ce que la coque principale est constituée de trois pièces dont l'une, située en son centre longitudinal, faisant fonction de fourreau, est creuse et ouverte à chacune de ses deux extrémités pour recevoir deux demi-coques identiques, constituant les deux autres pièces, qui s'emboitent, en s'alignant, dans ledit fourreau et sont maintenues, par un quelconque moyen mécanique, symétriquement par rapport au centre longitudinal de ladite coque principale.  This prao, which is therefore of the type comprising, in particular, a main hull and a single float situated, when under sail, in the wind of said main hull, with a connecting structure between said float and said main hull, is characterized in that the main hull consists of three parts, one of which, located at its longitudinal center, acting as a sheath, is hollow and open at each of its two ends to receive two identical half-shells, constituting the other two parts, which fit together, while aligning, in said sheath and are held, by any mechanical means, symmetrically with respect to the longitudinal center of said main hull.

Ainsi, en démontant une coque dont la longueur, indispensable pour la vitesse recherchée, dépasse largement celles des voitures automobiles et de leurs boxes, on obtient des objets légers et peu encombrants qui, associés aux autres éléments du prao suivant l'invention, forment un ensemble facile à poser et à fixer sur le toit d'une voiture par, notamment, les moyens usuels employés pour le transport des planches à voile. Thus, by dismantling a hull whose length, essential for the desired speed, greatly exceeds that of motor cars and their boxes, we obtain light and space-saving objects which, associated with the other elements of the prao according to the invention, form a assembly easy to install and fix on the roof of a car by, in particular, the usual means used for the transport of windsurfers.

En pratique et selon un mode préférentiel d'exécution de l'invention, les deux demi-coques sont maintenues en appui l'une contre l'autre par une corde, les reliant, munie d'un système de tension, et comportent un repère de positionnement par rapport au fourreau. Ceci permet un montage, ainsi qu'un démontage, rapide et facile de la coque principale, ne nécessitant aucun outillage. In practice and according to a preferred embodiment of the invention, the two half-shells are held in abutment against one another by a rope, connecting them, provided with a tension system, and have a mark positioning relative to the sheath. This allows a quick and easy assembly and disassembly of the main hull, requiring no tools.

Il est à noter, qu'en théorie, le prao suivant l'invention étant en marche sous voile, ladite corde est inutile puisque les deux demi-coques sont maintenues l'une contre l'autre par les poussées égales et de sens opposés de l'eau et de la voilure, agissant respectivement sur la demi-coque avant suivant le sens de la marche et, par l'intermédiaire d'un étai, sur la demi-coque arrière suivant ce même sens. It should be noted that, in theory, the prao according to the invention being in operation under sail, said rope is useless since the two half-shells are held against one another by the equal thrusts and opposite directions of the water and the wing, acting respectively on the front half-shell in the direction of travel and, by means of a forestay, on the rear half-shell in the same direction.

Quoi qu'il en soit, ladite corde facilite la manutention à terre du prao suivant l'invention et constitue un élément de sécurité en cas d'arrêt sur l'eau dudit prao. Anyway, said rope facilitates handling on land of the prao according to the invention and constitutes a safety element in the event of stopping on the water of said prao.

Les caractéristiques et avantages de l'invention ressortiront de la description qui va suivre, à titre d'exemple, en référence aux dessins schématiques annexés dont
la figure 1 est une vue en perspective d'un prao suivant l'invention ;
la figure 2 est une vue en élévation de la coque principale qui est, ici, volontairement déformée pour une meilleure clarté du dessin
la figure 3 est une vue en perspective du fourreau
la figure 4 est, à une échelle inférieure à celle de la figure 3, une vue en perspective d'une demi-coque
la figure 5 est une vue en perspective de la structure de liaison entre la coque principale et le flotteur
la figure 6 reprend, à échelle supérieure, un détail de la figure 1, qui, répéré par un encart I sur celle-ci, est caractéristique de la voilure du prao suivant l'invention
la figure 7 est une vue en perspective illustrant le transport sur le toit d'une voiture, du prao suivant l'invention.The characteristics and advantages of the invention will emerge from the description which follows, by way of example, with reference to the appended schematic drawings, of which
Figure 1 is a perspective view of a prao according to the invention;
Figure 2 is an elevational view of the main hull which is here intentionally deformed for better clarity of the drawing
Figure 3 is a perspective view of the sheath
Figure 4 is, on a smaller scale than that of Figure 3, a perspective view of a half-shell
Figure 5 is a perspective view of the connecting structure between the main hull and the float
Figure 6 shows, on a larger scale, a detail of Figure 1, which, identified by an insert I thereon, is characteristic of the wing of the prao according to the invention
Figure 7 is a perspective view illustrating the transport on the roof of a car, of the prao according to the invention.

Tel qu'illustré, sur ces figures, le prao suivant l'invention comporte, de manière usuelle, une coque principale 1, un seul flotteur ? situé, lors de sa marche sous voile, au vent de ladite coque principale 1, une structure de liaison 3 entre ledit flotteur 2 et ladite coque principale 1 et une voilure, maintenue en position fonctionnelle par deux étais 4 et un hauban 9, composée d'une voile 5 entourant dans sa partie avant un mât 6 et d'un "wishbone" 7. As illustrated, in these figures, the prao according to the invention usually comprises a main hull 1, a single float? located, when under sail, in the wind of said main hull 1, a connecting structure 3 between said float 2 and said main hull 1 and a wing, maintained in functional position by two struts 4 and a shroud 9, composed of 'a sail 5 surrounding in its front part a mast 6 and a "wishbone" 7.

Ce prao ne sera pas décrit dans tous ses détails ici. Seuls en seront plus spécifiquement décrits les éléments nécessaires à la compréhension de l'invention. This prao will not be described in full detail here. Only the elements necessary for understanding the invention will be more specifically described therein.

Suivant l'invention, le fourreau 11 (figure 3) s'apparente à une pièce tubulaire, de faible épaisseur et de section, de préférence mais non obligatoirement, approximativement triangulaire, dont la paroi interne a une rugosité permettant le libre mouvement des demi-coques 12, tout en réalisant avec elles une étanchéité suffisante vis à vis de l'eau, et qui comprend à sa partie supérieure les attaches 14 de la structure de liaison 3 et un réceptacle 10 pour le mât 6. According to the invention, the sheath 11 (FIG. 3) is similar to a tubular part, of small thickness and of section, preferably but not necessarily, approximately triangular, the internal wall of which has a roughness allowing the free movement of the half shells 12, while achieving with them a sufficient seal against water, and which comprises at its upper part the fasteners 14 of the connecting structure 3 and a receptacle 10 for the mast 6.

De même, suivant l'invention, une demi-coque 12 (figure 4), parfaitement étanche par construction, a une section maîtresse telle qu'elle permette son emboitement, avec un faible jeu mais sans coincement, dans le fourreau il et comporte, nécessairement, une face d'appui 17 ainsi qu'un moyen d'ancrage 18 pour l'attache démontable 13 la liant à l'autre demi-coque 12. Likewise, according to the invention, a half-shell 12 (FIG. 4), perfectly sealed by construction, has a master section such that it allows its interlocking, with little play but without jamming, in the sleeve it and comprises, necessarily, a bearing face 17 as well as an anchoring means 18 for the removable fastener 13 linking it to the other half-shell 12.

La structure de liaison 3 (figure 5) est brièvement décrite comme suit : elle est constituée, de préférence mais pas obligatoirement, de deux tubes d'aluminium 19, qui s'emboitent dans le fourreau 11 et dans le flotteur 2, et d'une toile 20, solidaire desdits tubes 19, sur laquelle s'assied l'équipage. The connecting structure 3 (FIG. 5) is briefly described as follows: it preferably, but not necessarily, consists of two aluminum tubes 19, which fit into the sleeve 11 and into the float 2, and a canvas 20, integral with said tubes 19, on which the crew sits.

Le flotteur 2, en revanche, dont les formes sont symétriques par rapport à son centre longitudinal, et qui doit recevoir les deux tubes 19 précédemment cités, sera avantageusement réalisé par moulage d'une matière synthétique. The float 2, on the other hand, whose shapes are symmetrical with respect to its longitudinal center, and which must receive the two previously mentioned tubes 19, will advantageously be made by molding a synthetic material.

Et enfin la voilure, comprenant, outre une voile 5 et son wishbone 7, un mât 6, en deux parties dont celle du haut est munie d'une attache 15, recevant les deux étais 4 et le hauban 9, qui nécessite une ouverture 16 dans la partie avant de la voile 5 (figure 6), qui est relié, de façon amovible, au fourreau 11 par une articulation permettant son pivotement en tout sens, est manoeuvrée par les étais 4 et une "écoute" 8. And finally the wing, comprising, in addition to a sail 5 and its wishbone 7, a mast 6, in two parts, the upper one of which is provided with a fastener 15, receiving the two struts 4 and the stay cable 9, which requires an opening 16 in the front part of the sail 5 (FIG. 6), which is detachably connected to the sheath 11 by an articulation allowing it to pivot in any direction, is maneuvered by the struts 4 and a "sheet" 8.

Le changement de cap est obtenu, en effet, sur le prao suivant l'invention, par pivotement longitudinal de la voilure, à la manière des planches à voile, ctest-à-dire sans gouvernail. The change of course is obtained, in fact, on the prao according to the invention, by longitudinal pivoting of the airfoil, in the manner of sailboards, that is to say without rudder.

Le prao suivant l'invention et selon la description précédente, n'a donc pas de gouvernail, mais également ni dérive ni aileron, cependant, il est bien évident que l'usage de ces appendices, fixes ou amovibles, est inclu dans la présente invention.  The prao according to the invention and according to the preceding description, therefore has no rudder, but also neither fin nor fin, however, it is obvious that the use of these appendages, fixed or removable, is included in the present invention.

Claims (4)

REVENDICATIONS 1. Prao comportant, notamment, une coque principale (1), un seul flotteur (2) situé, lors de sa marche sous voile, au vent de la coque principale (1), une structure de liaison (3) entre ladite coque principale (1) et ledit flotteur (2), caractérisé en ce que la coque principale (1) est constituée d'un fourreau (11), situé en son centre longitudinal, et de deux demi-coques (12), s'emboitant et s'alignant dans ledit fourreau (11), qui sont maintenues, par un quelconque moyen mécanique, symétriquement par rapport au centre longitudinal de la dite coque principale (1). 1. Prao comprising, in particular, a main hull (1), a single float (2) located, when under sail, in the wind of the main hull (1), a connecting structure (3) between said main hull (1) and said float (2), characterized in that the main hull (1) consists of a sheath (11), located in its longitudinal center, and two half-shells (12), which fit together and aligning in said sheath (11), which are held, by any mechanical means, symmetrically with respect to the longitudinal center of said main shell (1). 2. Prao suivant la revendication 1, caractérisé en ce que le fourreau (11) s'apparente à une pièce tubulaire, de faible épaisseur, dont la paroi interne a une rugosité permettant le libre mouvement des demi-coques (12), tout en réalisant avec elles, une étanchéité suffisante vis-à-vis de l'eau, et qui comprend à sa partie supérieure, les attaches (14) de la structure de liaison (3) et un réceptacle (10) pour le mât (6). 2. Prao according to claim 1, characterized in that the sheath (11) is similar to a tubular piece, of small thickness, the internal wall of which has a roughness allowing the free movement of the half-shells (12), while achieving with them a sufficient seal against water, and which comprises at its upper part, the fasteners (14) of the connecting structure (3) and a receptacle (10) for the mast (6) . 3. Prao suivant les revendications i et 2, caractérisé en ce qu'une demi-coque (12), parfaitement étanche par construction, a une section maîtresse telle qu'elle permette son emboitement, avec un très faible jeu mais sans coincement, dans le fourreau (11) et comporte, nécessairement, une face d'appui (17) ainsi qu'un moyen d'ancrage (18) pour l'attache démontable (13) la liant à l'autre demi-coque (12). 3. Prao according to claims i and 2, characterized in that a half-shell (12), perfectly sealed by construction, has a master section such that it allows its interlocking, with very little play but without jamming, in the sheath (11) and necessarily includes a bearing face (17) as well as an anchoring means (18) for the removable fastener (13) linking it to the other half-shell (12). 4. Prao suivant les revendications 1, 2 et 3, caractérisé en ce que le fourreau (11) et les demi-coques (12) puissent être équipés, de façon fixe ou amovible, de gouvernail, dérive ou aileron.  4. Prao according to claims 1, 2 and 3, characterized in that the sheath (11) and the half-shells (12) can be fitted, fixedly or removably, with a rudder, fin or fin.
FR8911951A 1989-09-13 1989-09-13 MULTIHULL SPORTS SAILBOAT OF THE "PRAO" TYPE, WITH REMOVABLE MAIN HULL. Expired - Fee Related FR2651743B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8911951A FR2651743B1 (en) 1989-09-13 1989-09-13 MULTIHULL SPORTS SAILBOAT OF THE "PRAO" TYPE, WITH REMOVABLE MAIN HULL.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8911951A FR2651743B1 (en) 1989-09-13 1989-09-13 MULTIHULL SPORTS SAILBOAT OF THE "PRAO" TYPE, WITH REMOVABLE MAIN HULL.

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FR2651743A1 true FR2651743A1 (en) 1991-03-15
FR2651743B1 FR2651743B1 (en) 1991-12-27

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FR8911951A Expired - Fee Related FR2651743B1 (en) 1989-09-13 1989-09-13 MULTIHULL SPORTS SAILBOAT OF THE "PRAO" TYPE, WITH REMOVABLE MAIN HULL.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2707945A1 (en) * 1993-07-19 1995-01-27 Rossignol Jean Pierre Floating craft, the splittable and modulable floats of which serve as a means of transport, on land, using rolling

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988008804A1 (en) * 1987-05-13 1988-11-17 Mcmillen Winton P Twin-hulled sailing vessel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988008804A1 (en) * 1987-05-13 1988-11-17 Mcmillen Winton P Twin-hulled sailing vessel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2707945A1 (en) * 1993-07-19 1995-01-27 Rossignol Jean Pierre Floating craft, the splittable and modulable floats of which serve as a means of transport, on land, using rolling

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FR2651743B1 (en) 1991-12-27

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