WO2010116277A1 - Navire avec voile rigide pivotante - Google Patents

Navire avec voile rigide pivotante Download PDF

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Publication number
WO2010116277A1
WO2010116277A1 PCT/IB2010/051204 IB2010051204W WO2010116277A1 WO 2010116277 A1 WO2010116277 A1 WO 2010116277A1 IB 2010051204 W IB2010051204 W IB 2010051204W WO 2010116277 A1 WO2010116277 A1 WO 2010116277A1
Authority
WO
WIPO (PCT)
Prior art keywords
axis
around
watercraft
sail
manoeuvre
Prior art date
Application number
PCT/IB2010/051204
Other languages
English (en)
Inventor
Marcello Gandini
Original Assignee
Clamadue S.R.L.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Clamadue S.R.L. filed Critical Clamadue S.R.L.
Publication of WO2010116277A1 publication Critical patent/WO2010116277A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H8/00—Sail or rigging arrangements specially adapted for water sports boards, e.g. for windsurfing or kitesurfing
    • B63H8/20—Rigging arrangements involving masts, e.g. for windsurfing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/02—Initiating means for steering, for slowing down, otherwise than by use of propulsive elements, or for dynamic anchoring
    • 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
    • B63H9/06—Types of sail; Constructional features of sails; Arrangements thereof on vessels
    • B63H9/068—Sails pivotally mounted at mast tip

Definitions

  • the present invention relates to a sailing watercraft.
  • the present invention relates to a sailing watercraft preferably intended for sports and/or recreational use.
  • the sailboard, or windsurf, and the kitesurf are known examples of watercrafts used for these purposes.
  • the windsurf comprises a board on which a mast is mounted which is fastened to the board by a flexible joint, referred to as mast heel, that in turn carries the sail.
  • the mast is internal to the sail and is positioned in the mast hole on the leading edge of the sail.
  • the sail is held and controlled by the sailor with the only aid of the boom which is secured to the mast and extends perpendicular thereto.
  • kitesurf is practised using a suitable board and a kite (also referred to as wing) driven by a control bar connected thereto by two, four or a greater number of long and thin cables.
  • document DE19964118 shows the hull of a water bike provided with a sail, or kite, connected to the hull by long cables, in the same manner as a kitesurf.
  • the technical task underlying the present invention is to propose a sailing watercraft overcoming the above mentioned drawbacks of the known art.
  • Another aim of the present invention is to propose a sailing watercraft that is able to keep the hull substantially aligned with the sailing direction due to the balance of the forces generated. It is a further . aim of the present invention to propose a watercraft having a sail structure capable of compensating for the tendency to capsizing.
  • FIG. 1 is a perspective view of a sailing watercraft according to the present invention
  • FIG. 2 shows the watercraft seen in Fig. 1 with some parts in phantom for a better view of others;
  • FIG. 3 is an enlarged portion of some components of the watercraft seen in Fig. 2 in a first operating position;
  • Fig. 4 shows the components in Fig. 3 from a different angular condition
  • FIG. 5 is an enlarged view of Fig. 4;
  • FIG. 6 shows the components seen in Fig. 4 in a second operating position
  • - Fig. 6a is an enlarged view of Fig. 6;
  • FIG. 7 is a front view of the watercraft seen in the preceding figures in a third operating position symmetric to the second one;
  • Fig. 8 shows the components in Fig. 4 in a fourth operating position
  • FIG. 9 shows an element belonging to the watercraft ' s sail referred to in the preceding figures.
  • Fig. 10 shows the element seen in Fig. 9 in a different operating configuration.
  • a sailing watercraft manufactured in accordance with the present invention has been generally identified with reference numeral 1.
  • the sailing watercraft 1 comprises a hull 2 which in the embodiment shown is similar to the hull of a water bike, i.e. has a saddle 3 on which the user sits.
  • a mainmast 4 Mounted on a front portion of hull 2 is a mainmast 4.
  • a base 5 of the mainmast 4 is integrally secured to a cylindrical body 6 mounted on hull 2 in such a manner that it can rotate about a longitudinal axis thereof which is coincident with a longitudinal axis of the watercraft 1 and disposed in a mid-line plane "P" of same.
  • the longitudinal axis of the cylindrical body 6 is therefore coincident with a first articulation axis "X-X", around which the mainmast 4 moves and describes a manoeuvring arc, as explained in greater detail in the following.
  • a reinforcing rod 7 connects the cylindrical body 6 to one end 8 of the mainmast 4 opposite to base 5.
  • a pulley 9 is hinged on said end 8 around a second articulation axis " ⁇ - ⁇ " parallel to the first articulation axis "X-X” .
  • Pulley 9 is secured through a hinge 10 to a sail 11 which is disposed between the mainmast 4 and the stern of the watercraft 1.
  • Hinge 10 is disposed at a leading edge 13 of sail 11 and is centred on pulley 9, i.e. is positioned on the second articulation axis "Y-Y”. Due to said hinge 10, sail 1 is movable around a third articulation axis "Z-Z" perpendicular to the second articulation axis " ⁇ - ⁇ ” .
  • Two cables 12 connect pulley 9 to hull 2.
  • a first cable 12 has a first end thereof secured to a peripheral portion of pulley 9 and a second end, opposite to the first one, fastened to hull 2 sideways relative to the mainmast 4.
  • a second cable 12 is disposed symmetrically on the other side of the watercraft 1.
  • Pulley 9 and cables 12 define connecting means between the mainmast 4 and sail 11, of such a nature that to each angular position of the mainmast 4 around the first articulation axis "X-X", a unique angular position of sail 11 around the second articulation axis " ⁇ - ⁇ " corresponds.
  • the inclination of the mainmast 4 relative to the mid-line plane "P" of hull 2 is always opposite to the inclination of sail 11.
  • the watercraft 1 further comprises a keel 14 positioned under the hull 2 and movable around a fourth articulation axis "K-K" lying in the mid-line plane
  • the watercraft 1 comprises suitable manoeuvring means.
  • said manoeuvring means comprises a handlebar 15 enabling all the above mentioned elements to be controlled and being positioned to the front of saddle 3.
  • the handlebar 15 is mounted on a propeller shaft 16 in turn mounted on hull 2 in a rotatable manner around a first manoeuvre axis "A-A” that is coincident with the longitudinal axis of the propeller shaft 16 (Figs. 3-6 and 8) .
  • the first manoeuvre axis "A-A” lies in the midline plane “P” and is parallel to the first articulation axis "X-X”.
  • the propeller shaft 16 has a first end 16a on which a first support 17 is integrally secured.
  • a second support 18 is rotatably mounted on the first support 17 around a second manoeuvre axis "B-B" which intersects the first manoeuvre axis "A-A”, is inclined towards saddle 3 and forms an angle of about 60° therewith (Figs. 3 and 5) .
  • the handlebar 15 is rotatably mounted on the second support 18 around a third manoeuvre axis "C-C” perpendicular to the second manoeuvre axis "B-B" (Figs. 3 and 5) .
  • a second end 16b of the propeller shaft 16 is mechanically connected to the cylindrical body 6 by means of a rotation-reversing mechanism 19.
  • This mechanism 19 comprises a fork 20 integral with the propeller shaft 16 and in engagement with a pin 21 parallel to the first manoeuvre axis "A-A” and the first articulation axis "X-X” and disposed on a flange 22 integral with the cylindrical body 6.
  • the second support 18 comprises a first lever 23 integral therewith that, in a central position of the handlebar 15, extends substantially orthogonal to the propeller shaft 16 (Fig. 5) .
  • a spindle 24 is inserted through a central portion of the propeller shaft 16 and is susceptible of rotation in the propeller shaft 16 around a longitudinal axis 11 I-I" of its own, perpendicular to the first manoeuvre axis "A-A” .
  • Opposite ends 24a, 24b of spindle 24 emerge from the propeller shaft 16.
  • a first end 24a of spindle 24 is integrally secured to a second lever 25 that, in a central position of the handlebar 15, extends substantially orthogonal to the propeller shaft 16.
  • a rod 26 has its opposite ends 26a, 26b hinged to the first and second levers 23, 25, respectively. Rod 26 is substantially parallel to the propeller shaft 16.
  • a second end 24b of the spindle 24 (Fig. 6a) is integrally secured to a third lever 27 that, in a central position of the handlebar 15, extends substantially parallel to the propeller shaft 16.
  • the third lever 27 is disposed above the keel 14.
  • the third lever 27 has a first end secured to spindle 24 and a second end opposite to the first one.
  • the keel 14 is integrally connected to a pivot pin 28 rotatably mounted in the hull 2 around the fourth articulation axis "K-K" that is coincident with the longitudinal axis of the pin 28 itself.
  • a final end of pin 28 of keel 14 is rotatably coupled, around an axis orthogonal to the fourth articulation axis "K-K", to a fourth lever 29.
  • a first end of the fourth lever 29 is hinged to pin 28 and a second end of said fourth lever 29 is secured, through a double articulation 30, to the second end of the third lever 27.
  • the double articulation 30 comprises a first hinge 31 coupled to the second end of the fourth lever 29 around an axis perpendicular to the longitudinal extension of said fourth lever 29.
  • the double articulation 30 comprises a second hinge 32 integral with the first one 31 and coupled to the second end of the third lever 27 around an axis parallel to the longitudinal extension of said second lever 27.
  • the first, second, third and fourth levers 23, 25, 27, 29 together with rod 26 define a kinematic transmission mechanism connecting the second support 18 to the keel 14.
  • the third and fourth levers 27, 29 are disposed parallel to each other and to the propeller shaft 16 and the third lever 17 lies in an interposed position between the propeller shaft 16 and the fourth lever 29.
  • the rotation axis 11 I-I" of spindle 24 is coincident with the fourth articulation axis "K-K” .
  • Rotation of the handlebar 15 only around the second manoeuvre axis "B-B" (Fig. 8) in a predetermined direction and through a predetermined angle involves rotation of the keel in the same direction and through a corresponding angle.
  • the propeller shaft 16 does not rotate, the rotation axis 11 I-I" of spindle 24 remains coincident with the fourth articulation axis "K-K” and the third 27 and fourth 29 levers rotate together around the common axes "I-I", "K-K".
  • Rotation of the handlebar 15 only around the first manoeuvre axis "A-A" (Figs. 6, 6a and 7), or rotation of the propeller shaft 16 involves, together with movement of the mainmast 4 and sail 11, rotation of the first, second and third levers 23, 25, 27 that move integrally with shaft 16. Displacement of the second end of the third lever 27 drags along, with the double articulation 30, the second end of the fourth lever 29, said fourth lever 29 becoming inclined to the third lever 27 and rotating around the fourth articulation axis "K-K" together with keel 14.
  • the movement of the handlebar 15 around the first manoeuvre axis "A-A" to one side of the watercraft 1 causes partial rotation of keel 14 around the fourth articulation axis "K-K" in a direction capable of orienting the leading edge 14a of said keel 14 towards the same side.
  • Rotation of the handlebar 15 both about the second manoeuvre axis "B-B” and about the first manoeuvre axis "A-A” causes a combined movement of keel 14.
  • the handlebar 15 further comprises fastening means 33 for a line 34 connected to sail 11 at a trailing edge of same (Figs. 1, 5, 8) .
  • the fastening means 33 is mounted between the two half handlebars 15a and comprises two mutually facing jaws, each of which is hinged to the handlebar 15. The jaws allow line 34 interposed therebetween to be locked and unlocked.
  • Line 34 locked between the jaws is guided by idler rollers 35, 36, 37, 38 mounted on the handlebar 15, passes through a channel 39 formed in or under the saddle 3, comes out at a rear portion of the watercraft 1, behind the user, and has one final end secured to the trailing edge of sail 11.
  • line 34 passes around a first idler roller 35 rotatably installed on a portion of the second support 18 disposed before the handlebar 15, i.e. on the opposite side relative to saddle 3, around a second idler roller 36 rotatably installed on the handlebar 15 under the jaws, around a third idler roller 37 mounted alongside relative to the second one 36 (Figs. 3 and 5).
  • the idler roller arrangement 35, 36, 37, 38 is of such a nature that line 34 is pulled by moving the handlebar close to saddle 3, i.e. to the user.
  • Sail 11 is shaped like a wing and is symmetric to a second articulation axis "Y-Y" (Figs. 1, 2, 7, 9, 10) .
  • Sail 11 in fact comprises a portion of leading edge 41 and a portion of trailing edge 42 that are substantially stiff.
  • a plurality of ribs 43 (three in number in the accompanying figures) connects the leading edge portion 41 to the trailing edge portion
  • a flexible cover 44 is disposed around the ribs
  • each of the ribs 43 (Figs. 9 and 10) is of the flexible type, which means that it can become deformed in a plane transverse to the wing under the action of the apparent wind, so as to vary its centre line "M" .
  • each rib 43 comprises a plurality of sectors, preferably of plastic material, that are consecutively- hinged along the centre line "M".
  • Each sector 45 is preferably defined by a portion of an extruded and cut tube.
  • Each sector on a wall 46 thereof for coupling to an adjacent sector 45 has a cylindrical seat 47 for a cylindrical body 48 integral with a coupling wall 46 of the adjacent sector 45.
  • the cylindrical seat 47 and cylindrical body 48 have an articulation axis perpendicular to the transverse plane in which rib 43 lies.
  • the cylindrical body 48 is rotatably in engagement in seat 47 and is free to rotate through a maximum angle determined by the interference between the coupling walls 46.
  • each wall 46 is concave and is formed with two flat portions angled to each other having their vertex on the centre line "M". Two consecutive sectors 45 rotate until the facing flat portions of the respective walls 46 comes into contact. Only the leading edge sector and the trailing edge sector have one coupling wall 46. The remaining sectors 45 have two coupling walls.
  • One or more of ribs 43 further comprises a device 49 for presetting the maximum deformation of the centre line "M", so as to limit the mutual rotation between adjacent sectors 45 to an angle smaller than that corresponding to the interference between the coupling walls 46.
  • Device 49 comprises a cable 50 passing through sectors 45 in openings formed along the centre line "M".
  • Cable 50 is anchored in the vicinity of the leading edge and the trailing edge.
  • cable 50 has a first end secured to the inside of the leading edge sector and a second end secured to the inside of the trailing edge sector.
  • the second end is joined to a first threaded body 51 in engagement with a second threaded body 52 locked along a direction coincident with the centre line "M" at that point.
  • An adjustment wheel 53 accessible from the outside through openings formed in the trailing edge sector, allows rotation of the second threaded body 52 to move the first threaded body 51 along the direction coincident with the centre line "M".
  • the first threaded body 51 together with the second threaded body 52 and the wheel 53 define means for adjusting tensioning of cable 50 between the anchorage points.
  • sail 11 can be used on a windsurf, a sailing boat or others.
  • the sailing craft 1 in accordance with the present invention preferably comprises an anchoring device, not shown, adapted to bite the sea floor, so as to retain the watercraft to which it is connected by a rope.
  • this device is inserted into the cylindrical body 6 and is automatically ejected through suitable throwing means (of the spring type, for example) when the user loses control and falls into the water.
  • suitable throwing means of the spring type, for example
  • a line is tied to a user's ankle and is connected to said throwing means.
  • the wrench given to the line triggers the throwing means and the anchoring device prevents the watercraft from going away without any control.
  • the mainmast 4 In use, in the absence of external forces due to the user's and/or wind's action, the mainmast 4 is in a vertical and centred position on hull 2 (Figs. 1-5). This position is preferably ensured by an elastic centring mechanism 54 that, in the non-limiting embodiment shown, comprises two arms 55 hinged to the hull 2 around axes parallel to the first articulation axis "X-X" .
  • the two arms 55 elastically close on a pin 56 integral with mast 4, preferably by means of rubber bands 57 wound around the ends of arms 55.
  • the present invention reaches the intended purposes and achieves important advantages.
  • the watercraft according to the present invention can be easily managed in an intuitive manner due to the commands gathered in the handlebar alone.
  • the watercraft in reference therefore enables an easy- approach to an inexperienced user but at the same time, if skilled hands drive it, allows high speeds to be reached and acrobatics to be done.
  • use of the sail as a wing allows important vertical aerodynamic forces to be generated, capable of compensating for the watercraft weight until raising it out of the water.
  • the vertical component (relative to the free surface of the water) of these forces balances the moment generated by the horizontal component thus reducing or eliminating the tendency to capsizing, as compared with known watercrafts.
  • the capsizing moment is also compensated for by the user's weight that is obliged to bend with the handlebar in the opposite side relative to the sail, so as to generate, by his/her weight, a moment opposing the moment generated by the horizontal component of the aerodynamic forces.
  • the sail structure enables the maximum set or maximum deformation of the sail to be adjusted based on the wind conditions and the user's ability.

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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)
  • Steering Devices For Bicycles And Motorcycles (AREA)
  • Toys (AREA)

Abstract

Navire à voile qui comprend une coque (2), un grand-mât (4) monté sur la coque (2) et mobile sur un arc de cercle prédéterminé autour d'un premier axe d'articulation (X–X) parallèle à l'axe longitudinal de la coque (2), une voile (11) articulée sur une extrémité (8) du grand-mât (4) autour d'un second axe d'articulation (Y–Y) parallèle au premier axe d'articulation (X–X), des moyens de manœuvre (15, 16, 17, 18, 19, 23, 25, 26, 27, 29) reliés dans leur fonctionnement au grand-mât (4) pour le déplacer autour du premier axe d'articulation (X–X), des moyens de liaison (9, 12) entre le grand-mât (4) et la voile (11) de nature telle que pour chaque position angulaire du grand-mât (4) autour du premier axe d'articulation (X–X) il n'y a qu'une position angulaire de la voile (11) autour du second axe d'articulation (Y–Y) et que l'inclinaison du grand-mât (4) par rapport au plan médian (P) de la coque (2) est toujours du côté opposé à l'inclinaison de la voile (11).
PCT/IB2010/051204 2009-04-07 2010-03-19 Navire avec voile rigide pivotante WO2010116277A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI2009A000554A IT1393553B1 (it) 2009-04-07 2009-04-07 Natante a vela
ITMI2009A000554 2009-04-07

Publications (1)

Publication Number Publication Date
WO2010116277A1 true WO2010116277A1 (fr) 2010-10-14

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PCT/IB2010/051204 WO2010116277A1 (fr) 2009-04-07 2010-03-19 Navire avec voile rigide pivotante

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IT (1) IT1393553B1 (fr)
WO (1) WO2010116277A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012150291A1 (fr) * 2011-05-05 2012-11-08 Magnard Innovation Voilier comportant une structure à flotteur munie d'un mât
IT201800004279A1 (it) * 2018-04-06 2019-10-06 Natante a vela

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2487776A1 (fr) * 1980-08-04 1982-02-05 Branca Gerard Perfectionnements apportes aux embarcations du type a voilure libre
FR2636298A1 (fr) * 1988-09-09 1990-03-16 Orso Michel D Engin a voilure en aile fixee articulee au sommet d'un mat
US4936236A (en) * 1989-03-20 1990-06-26 Sinden Frank W Symmetrical sailboat with moment balancing rig
DE19528796A1 (de) * 1995-08-04 1997-02-06 Klaus Ketterer Verfahren zum Betreiben eines Segelschiffes und Segelschiff
DE19724665A1 (de) * 1997-06-11 1999-05-12 Boris Kaplan Rigg für feste Segel
DE19964118A1 (de) 1999-12-30 2001-07-05 Masberg Jens Jumping Jet-Ski

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2487776A1 (fr) * 1980-08-04 1982-02-05 Branca Gerard Perfectionnements apportes aux embarcations du type a voilure libre
FR2636298A1 (fr) * 1988-09-09 1990-03-16 Orso Michel D Engin a voilure en aile fixee articulee au sommet d'un mat
US4936236A (en) * 1989-03-20 1990-06-26 Sinden Frank W Symmetrical sailboat with moment balancing rig
DE19528796A1 (de) * 1995-08-04 1997-02-06 Klaus Ketterer Verfahren zum Betreiben eines Segelschiffes und Segelschiff
US5934214A (en) 1995-08-04 1999-08-10 Ketterer; Klaus Method of sailing a boat, and sailing vessel
DE19724665A1 (de) * 1997-06-11 1999-05-12 Boris Kaplan Rigg für feste Segel
DE19964118A1 (de) 1999-12-30 2001-07-05 Masberg Jens Jumping Jet-Ski

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012150291A1 (fr) * 2011-05-05 2012-11-08 Magnard Innovation Voilier comportant une structure à flotteur munie d'un mât
FR2974784A1 (fr) * 2011-05-05 2012-11-09 Magnard Innovation Voilier comportant une structure a flotteur munie d'un mat
IT201800004279A1 (it) * 2018-04-06 2019-10-06 Natante a vela

Also Published As

Publication number Publication date
ITMI20090554A1 (it) 2010-10-08
IT1393553B1 (it) 2012-04-27

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