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WO2008136669A1 - Ensemble mât et vaisseau à voiles équipé d'un tel mât - Google Patents

Ensemble mât et vaisseau à voiles équipé d'un tel mât Download PDF

Info

Publication number
WO2008136669A1
WO2008136669A1 PCT/NL2008/050268 NL2008050268W WO2008136669A1 WO 2008136669 A1 WO2008136669 A1 WO 2008136669A1 NL 2008050268 W NL2008050268 W NL 2008050268W WO 2008136669 A1 WO2008136669 A1 WO 2008136669A1
Authority
WO
WIPO (PCT)
Prior art keywords
mast
mainsail
boom
mast assembly
assembly according
Prior art date
Application number
PCT/NL2008/050268
Other languages
English (en)
Inventor
Wubbo Johannes Ockels
Jeroen Meijer
Original Assignee
Wubbo Ockels B.V.
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 Wubbo Ockels B.V. filed Critical Wubbo Ockels B.V.
Publication of WO2008136669A1 publication Critical patent/WO2008136669A1/fr

Links

Classifications

    • 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
    • B63H9/08—Connections of sails to masts, spars, or the like
    • B63H9/10—Running rigging, e.g. reefing equipment
    • B63H9/1021—Reefing
    • B63H9/1042—Reefing by furling around or inside the boom
    • 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
    • B63H9/08—Connections of sails to masts, spars, or the like
    • 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
    • B63H9/08—Connections of sails to masts, spars, or the like
    • B63H2009/086—Connections of sails to masts, spars, or the like by sliders, i.e. by shoes sliding in, or guided by channels, tracks or rails; for connecting luffs, leeches, battens, or the like to masts, spars or booms

Definitions

  • This invention relates to a mast assembly for a sailing vessel, provided with a mast, a boom and a mainsail, with at least a number of battens included in the mainsail, and the mainsail being provided with a foreleech extending along the mast in hoisted condition of the sail and with a foot extending along the boom in hoisted condition of the sail, while connections are provided by means of which the foreleech of the sail is connected with the mast.
  • carriages provided with ball bearings.
  • Such carriages are marketed, for instance, by Harken®.
  • Such carriages are costly and moreover cannot be combined with so-called rolling booms. This is because the carriages are arranged on a profiled section from which they cannot be taken off and moreover they are far too large to be wound around a mandrel of a rolling boom.
  • so-called slides are known for connecting the foreleech of a mainsail with the mast. Such slides are mostly connected with the sail cloth and are certainly not suitable for use in a roached mainsail having battens extending across the full width of the mainsail and exerting pressure on the mast.
  • the known slides have the drawback that they may assume a skewed position relative to the guide section in the mast and may jam as a result. Accordingly, slides also entail the danger that the mainsail cannot be struck fast and smoothly when there is a need for that in case of rapidly rising wind.
  • the invention contemplates a solution to the above-outlined problems and to that end provides a mast assembly of the type described in the opening paragraph which, according to the invention, is characterized in that the connections are designed as spherical sliding bodies, while the mast is provided with a guide channel in which the spherical sliding bodies are included in hoisted condition of the sail.
  • the spherical sliding bodies can swivel in all directions, so that the battens can swivel freely relative to the mast both in horizontal and in vertical direction, substantially without this entailing an increase of the frictional resistance between the sliding bodies and the mast during the up and down movement relative to each other.
  • the boom is a rolling boom, provided with a mandrel around which the mainsail is windable.
  • the spherical sliding bodies can have relatively small dimensions in all directions, the spherical sliding bodies can be moved out of the guide channel during furling of the mainsail around the mandrel. Around the mandrel there is sufficient space to take up the respective spherical sliding bodies.
  • the spherical sliding bodies By virtue of the spherical sliding bodies, it is therefore possible to combine the particular advantages of a roached mainsail with the particular advantages of a rolling boom. Thus, a greater sailing efficiency is combined with a mainsail convenience. Hoisting and striking the mainsail can be done in a fully automated manner. During hoisting, the spherical sliding bodies automatically find their way to the guide channel in the mast, and during striking the spherical sliding bodies automatically find a position around the mandrel of the rolling boom.
  • the mainsail is therefore a roached mainsail, with at least a number of battens extending from the foreleech as far as the aft leech.
  • the spherical sliding bodies are connected with a batten, so that the pressure force prevailing in the batten is transmitted directly onto the mast via the spherical sliding bodies.
  • a connecting piece may be present, which can optionally include a vertical hinge pivot.
  • the distance between each spherical sliding body and the foreleech is equal for all spherical sliding bodies. This enhances the ease with which the sail can be hoisted and struck.
  • the mainsail is provided, for the purpose of a batten, with a batten sleeve with a batten tension strap provision by means of which the tension of the sail with respect to the batten contained in the batten sleeve is settable, the tension being settable in that the distance between the aft leech of the mainsail and the end of the batten remote from the mast is settable using the batten tension strap provision.
  • the rolling boom is provided with a hollow boom spar in which the rotatable mandrel is included, with the sail in a stowed condition being wound around the mandrel and situated in the boom spar.
  • the boom can be hingedly connected with the mast.
  • the hinge joint can comprise both a horizontal and a vertical pivot.
  • the boom comprises a boom spar which is fixedly connected with the mast, while the mast is rotatable relative to a hull of the vessel.
  • Such an exemplary embodiment affords ease of operation, certainly when also the jib is provided with a jib spar which is fixedly connected to the mast.
  • Such a mast assembly known in practice under the name of Aerorig®, provides great ease of operation and, by virtue of the connections designed as spherical sliding bodies, can be combined with a roached mainsail and a hollow boom spar in which a rotatable mandrel is accommodated.
  • the spherical sliding bodies enable complete stowage of the mainsail in the hollow boom spar.
  • the guide channel in the mast is provided at the lower end thereof with a lead-in which, seen from the top down, widens gradually.
  • a lead-in promotes trouble-free guidance of the spherical sliding bodies into the guide channel of the mast when hoisting the mainsail.
  • the lead-in can have a lower end terminating in the interior space of a hollow boom spar of the mast assembly. From the interior space in the hollow boom spar, the spherical sliding bodies can thus be guided to the guide channel in a trouble-free manner.
  • the invention further relates to a sailing vessel provided with at least one mast assembly as described above.
  • Fig. 1 shows a side elevational view of a conventionally rigged mast assembly
  • Fig. 2 shows a similar side elevational view to Fig. 1, with a roached mainsail;
  • Fig. 3 shows a similar side elevational view to Fig. 1, with a roached mainsail and a pre-bent mast;
  • Fig. 4 shows a side elevational view of a first exemplary embodiment
  • Fig. 5 shows a sectional view along line V-V from Fig. 4;
  • Fig. 6 shows a perspective view of a second exemplary embodiment
  • Fig. 7 shows an elevational view from line VII-VII in Fig. 6
  • Fig. 8 shows a schematic side elevational view with disassembled parts of the connection between the mainsail and the mast.
  • Fig. 1 shows a side elevation of a mast assembly provided with a mast 1, a boom 2 and a mainsail 3.
  • the mainsail 3 is provided with a number of, relatively short, battens 4.
  • a standard mainsail runs from the clew 5 in a substantially straight line to the head 6.
  • the mainsail 3 is provided with a so-called fore leech or luff 7 which extends along the mast 1.
  • the aft leech 8 is the free edge extending between the clew 5 and the head 6.
  • the foot 9 of the mainsail extends along the boom 2.
  • Fig. 2 shows a mast assembly with a so-called roached mainsail.
  • the aft leech 8 is provided with a curvature.
  • the surface area of the mainsail is enlarged considerably, which renders the mainsail many times more effective than a conventional rig as shown in Fig. 1.
  • battens 4 extending in horizontal direction. During sailing, these battens 4 exert a pressure force on the mast 1.
  • Fig. 3 shows an exemplary embodiment where the mainsail has an extreme roach and where the mast 1 is pre-bent.
  • the surface area of the sail with respect to the length of the circumferential edges of the sail is as large as possible.
  • This ratio called aspect ratio in the sailing world, leads to a more efficient sail being obtained because the positions where turbulence can arise, i.e. near the free edges, which turbulence leads to resistance, are limited to a minimum with respect to the surface of the sail.
  • the battens 4 of a roached mainsail 3 exert a pressure force on the mast during sailing.
  • the frictional resistance that needs to be overcome to lower the mainsail 3 along the mast 2 should be as small as possible.
  • the exemplary embodiment represented in Fig. 4 shows a new solution for the connection of a mainsail 3 to the mast 1.
  • the battens 4 at an end proximal to the mast 1 are provided with spherical sliding bodies 10.
  • the mast 1 is provided with a guide channel 11 in which the spherical sliding bodies 10 are included in hoisted condition of the sail 3.
  • the guide channel 11 is provided with a passage slot 12.
  • the passage slot 12 has a width that is smaller than the diameter of the spherical sliding bodies 10. All this is properly shown in the cross-sectional view V-V represented in Fig. 5.
  • the width B of the passage slot 12 is as large as possible, so that a batten 4 can be swiveled relative to the mast 1 through a largest possible angle ⁇ . It is also possible, however, to arrange in the connection between the spherical sliding body 10 and the batten 4 a hinge pivot extending substantially in vertical direction, so that the batten 4 can be swiveled between two extreme positions through an angle of 180° or even more.
  • the mast assembly is provided with a so-called rolling boom, which is the case in the exemplary embodiment of Fig. 4, the connection between the mainsail 3 and the mast 1 using the spherical sliding bodies 10 comes out well, certainly so when a roached mainsail 3 is involved.
  • the spherical sliding bodies 10, as is clearly visible in Fig. 4, take up little space when the mainsail is wound around the rotatable boom 2.
  • the boom 2 comprises a rotatable mandrel 13 which is connected with the mast 1 so as to be rotatable about its longitudinal axis via a rotation shaft 14.
  • the mandrel 13 is additionally connected with the mast 1 for swiveling motion about a horizontal axis 16 and a vertical axis 17.
  • the horizontal axis 16 affords optimum trimming possibilities and the vertical axis 17 affords the possibility of swiveling the mainsail 3 relative to the mast, allowing it to assume a proper position relative to the direction of the wind.
  • a hollow boom spar may be provided, in which the sail is received when it has been wound around the mandrel 13.
  • the sliding bodies 10 are spherical, the chance of their getting stuck in the guide channel 11 due to racking or skewing is minimized.
  • the battens 4 can swivel up, down, to starboard and to port, without the spherical sliding bodies 10 experiencing any extra frictional resistance while moving up or down in the guide channel 11.
  • the diameter of the guide channel 11 is approximately 4 mm greater than the diameter of a spherical sliding body 10. With such a clearance, an optimum connection is obtained, while during striking and hoisting a minimal frictional resistance between the spherical sliding bodies and the mast 1 arises. Rapid lowering of the sail, for instance for the purpose of reefing, is possible with the exemplary embodiment shown, even when the wind is strong and so the battens 4 exert a great pressure force on the mast 1.
  • the spherical sliding bodies 10 are preferably manufactured from a plastic having a low coefficient of friction.
  • the plastic should be resistant to water and hence should not take up any, or hardly any, water.
  • Delrin® polyoxymethylene or POM
  • Plastic moreover has a low specific weight. This is of importance because the weight on the mast should be minimized as far as possible.
  • Fig. 6 shows a variant where the boom 2 is not capable of swiveling relative to the mast 1.
  • a mast assembly is known in practice under the brand name Aerorig®.
  • the mast assembly is provided with a hollow boom spar 18 having a rotatable mandrel 13 accommodated therein.
  • battens 4 which at the ends proximal to the mast 1 are provided with spherical sliding bodies 10.
  • the sliding bodies 10 are situated in a guide channel 11.
  • Fig. 6 shows the mainsail in partly struck condition. It is clearly visible that the sail 3 has been wound around the mandrel 13.
  • Fig. 8 shows the manner in which the spherical sliding body 10 may be connected with a batten 4 and further shows the manner in which the batten 4 may be included in the mainsail 3.
  • the mainsail 3 is provided with a batten sleeve 21 in which a batten 4 can be received.
  • the batten sleeve is provided with a strap 22 at the foreleech 7.
  • the batten 4 is provided with a connecting piece comprising a sleeve 23, a threaded end 24 and side pins 25.
  • the threaded end 24 serves to connect the spherical sliding body 10 provided with internal thread 26 to the batten 4.
  • the side pins 25 are engaged by the strap 22, while the threaded end 24 reaches through the opening 27 in the strap 22.
  • the distance between the spherical sliding body 10 and the foreleech 7 is equal for all spherical sliding bodies 10, which is of importance with a view to smooth hoisting and striking of the mainsail 3.
  • the batten sleeve 21 is provided, adjacent the aft leech 8, with a batten tension strap provision 28.
  • this batten tension strap provision 28 the tension of the sail 3 with respect to the batten 4 can be set.
  • the tension strap 28 engages the free end 29 of the batten 4.
  • the free end 29 may be provided with a kind of notch which prevents the tension strap 28 from sliding off the end of the batten 4.
  • the batten 4 projects more or less from the aft leech 8 of the mainsail 3.
  • a vertical hinge may be arranged to realize a larger pivoting angle of the battens 4 relative to the mast 1.
  • Such a hinge could for instance be included in the connecting piece between the spherical body 10 and the batten 4.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Jib Cranes (AREA)

Abstract

La présente invention concerne un ensemble mât pour vaisseau à voiles comportant un mât, une bôme et une grand-voile dans laquelle sont inclues plusieurs lattes, ladite grand-voile étant pourvue d'une chute avant s'étendant le long du mât lorsque la voile se trouve hissée, et des parties de couplage au moyen desquels la chute avant de la voile est reliée au mât. Les éléments de couplage sont conçus sous forme de corps coulissants sphériques et le mât est quant à lui doté d'une glissière de guidage dans laquelle les corps coulissants sphériques sont logés lorsque la voile se trouve hissée. La présente invention concerne également un vaisseau à voiles équipé d'un tel ensemble mât.
PCT/NL2008/050268 2007-05-02 2008-04-29 Ensemble mât et vaisseau à voiles équipé d'un tel mât WO2008136669A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1033790A NL1033790C2 (nl) 2007-05-02 2007-05-02 Mastsamenstel alsmede een zeilboot voorzien van een dergelijk mastsamenstel.
NL1033790 2007-05-02

Publications (1)

Publication Number Publication Date
WO2008136669A1 true WO2008136669A1 (fr) 2008-11-13

Family

ID=38834514

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2008/050268 WO2008136669A1 (fr) 2007-05-02 2008-04-29 Ensemble mât et vaisseau à voiles équipé d'un tel mât

Country Status (2)

Country Link
NL (1) NL1033790C2 (fr)
WO (1) WO2008136669A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011110178A1 (fr) 2010-03-10 2011-09-15 Tpk Holding Aps Association d'un mât et d'une voile
WO2012130914A1 (fr) 2011-03-28 2012-10-04 Lorima Systeme de greement pour voilier
EP4177148A1 (fr) * 2021-11-09 2023-05-10 Chantiers de l'Atlantique Navire a voile pourvu d'une piece de transit pour l'affalement et le hissage de ladite voile

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB185964A (en) * 1921-09-22 1922-09-21 John Theodore Cuthbert Moore B Improvements in and connected with sails for vessels
FR2168744A5 (fr) * 1972-01-20 1973-08-31 Lagerquist Rolf
DE3109574A1 (de) * 1981-03-13 1982-12-09 Ludwig, geb. Rinker, Anita, 7402 Kirchentellinsfurt Segel-mast-verbindung, insbesondere fuer windgetriebene wasserfahrzeuge
FR2690893A1 (fr) * 1992-05-07 1993-11-12 Despres Jean Michel Dispositif de liaison à curseur entre la ralingue d'une voile et un mât.
EP0614803A1 (fr) * 1993-03-10 1994-09-14 Société Anonyme dite JP MARECHAL SA Dispositif de guidage de ralingue de guindant notamment d'une voile enroulable sur bôme
WO2001000483A1 (fr) * 1999-06-28 2001-01-04 Polymer Kompositer I Göteborg Ab Voilier

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB185964A (en) * 1921-09-22 1922-09-21 John Theodore Cuthbert Moore B Improvements in and connected with sails for vessels
FR2168744A5 (fr) * 1972-01-20 1973-08-31 Lagerquist Rolf
DE3109574A1 (de) * 1981-03-13 1982-12-09 Ludwig, geb. Rinker, Anita, 7402 Kirchentellinsfurt Segel-mast-verbindung, insbesondere fuer windgetriebene wasserfahrzeuge
FR2690893A1 (fr) * 1992-05-07 1993-11-12 Despres Jean Michel Dispositif de liaison à curseur entre la ralingue d'une voile et un mât.
EP0614803A1 (fr) * 1993-03-10 1994-09-14 Société Anonyme dite JP MARECHAL SA Dispositif de guidage de ralingue de guindant notamment d'une voile enroulable sur bôme
WO2001000483A1 (fr) * 1999-06-28 2001-01-04 Polymer Kompositer I Göteborg Ab Voilier

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011110178A1 (fr) 2010-03-10 2011-09-15 Tpk Holding Aps Association d'un mât et d'une voile
EP2544945A1 (fr) * 2010-03-10 2013-01-16 Watercraft Innovation APS Association d'un mât et d'une voile
WO2012130914A1 (fr) 2011-03-28 2012-10-04 Lorima Systeme de greement pour voilier
EP4177148A1 (fr) * 2021-11-09 2023-05-10 Chantiers de l'Atlantique Navire a voile pourvu d'une piece de transit pour l'affalement et le hissage de ladite voile
FR3128937A1 (fr) * 2021-11-09 2023-05-12 Chantiers De L'atlantique Navire a voile pourvu d'une piece de transit pour l'affalement et le hissage de ladite voile

Also Published As

Publication number Publication date
NL1033790C2 (nl) 2008-11-04

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