[go: up one dir, main page]

WO1989011994A1 - Bateaux a voile - Google Patents

Bateaux a voile Download PDF

Info

Publication number
WO1989011994A1
WO1989011994A1 PCT/AU1989/000240 AU8900240W WO8911994A1 WO 1989011994 A1 WO1989011994 A1 WO 1989011994A1 AU 8900240 W AU8900240 W AU 8900240W WO 8911994 A1 WO8911994 A1 WO 8911994A1
Authority
WO
WIPO (PCT)
Prior art keywords
sail
mast
hull
supported
proa
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/AU1989/000240
Other languages
English (en)
Inventor
John Kingston Pizzey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sarrinen Pty Ltd
Original Assignee
Sarrinen Pty Ltd
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 Sarrinen Pty Ltd filed Critical Sarrinen Pty Ltd
Publication of WO1989011994A1 publication Critical patent/WO1989011994A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B15/00—Superstructures, deckhouses, wheelhouses or the like; Arrangements or adaptations of masts or spars, e.g. bowsprits
    • B63B15/02—Staying of masts or of other superstructures
    • 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
    • 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
    • B63B1/121—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly comprising two hulls
    • 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 
    • 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
    • B63B1/14—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected resiliently or having means for actively varying hull shape or configuration
    • B63B2001/145—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected resiliently or having means for actively varying hull shape or configuration having means for actively varying hull shape or configuration

Definitions

  • This invention relates to improvements to proas of the general type illustrated in PCT/AU 86/00159 and adapted to sail with either a light hull or heavy hull to windward.
  • the proas illustrated in the abovementioned application utilised a sail supporting arrangement which imparted a high bending moment to the cross beams or deck assembly interconnecting the main hull to the float. While they have proved satisfactory and capable in use, the necessity of manufacturing such strong decks increases the weight of the vessel and their complexity of construction. It is also difficult to form effective end connections for such decks where they are to be dismantled or folded for trailing purposes.
  • this invention in one aspect resides broadly in a proa including:- decking supported by a pair of spaced hulls comprising a windward hull and a leeward hull, each of the latter having respective underwater sections which are substantially symmetrical about a transverse centreline; a mast assembly including a mast fixed to a base beam having a sail outhaul whereby a sail supported by or attached to sail mast may be maintained in an selected tensioned configuration; upper supporting means for supporting the upper end portion of said mast substantially within a vertical projection of said windward hull; lower supporting means disposed substantially within a vertical projection of said leeward hull for supporting said base beam for pivotal movement about an inclined axis extending between said lower supporting means and said upper supporting means whereby said base beam may be pivoted about said inclined axis; elevated sail
  • the sail assembly may be adjustably inclined and preferably between twenty and forty-five degrees to the vertical.
  • the masthead or the mast or sail base could be outside the extremities of the vessel if desired.
  • the line or axis interconnecting the sail attachment points preferably lies between the front and rear edges of the sail which may constitute an assembly of sails comprising a fore sail and a main sail.
  • this axis lies in the front one third of the sail such that the latter in use is substantially balanced or balanced to a significant extent whereby loads on the control means are significantly reduced. This is particularly advantageous when pivoting the sail between windward tacks when the proa is substantially stationary, as the pivoting of the tensioned sail causes opposed pivoting of the proa from the old heading to the new heading.
  • the mast may be secured to a base beam which projects forwardly therefrom to support a headstay or sail and rearwardly to support the outhaul for the clew of the sail set from the mast.
  • Back stays for tensioning the luff or headstay may also extend from the mast to the rear of the base beam. In this manner sail tension stresses are accommodated internally within the mast and base beam and as a consequence, the decking between the hulls may be relatively light.
  • the upper end portion of the mast is supported by prop means which connects pivotally to the front of the mast, and above the forestay connection if a forestay is used.
  • the prop means may be stayed to enable controlled fore and aft movement of the upper end of the mast and it may be extendible or otherwise mounted to enable the inclination of the mast to be varied.
  • this invention resides broadly in a method of building a boat hull, the method comprising forming hull side panels having mating end parts formed with a curve extending between the upper and lower edges of the hull side panels and having a longitudinally outermost point medially therebetween; arranging said panels congruently; securing the mating front end parts together, and moving the upper edges of the side panels apart so as to induce transverse bowing of the side panels.
  • the bottom edges of the side panels may be connected together or a bottom panel may be interposed therebetween.
  • the hull side panels may be symmetrical about a transverse centreline or one end of the side panes may be interconnected through a transom panel.
  • the side panels are formed of plywood, but of course the side panels may be formed of any suitable material such as fiberglass reinforced plastics material or the like.
  • FIG. 1 is a perspective view of a typical proa according to this invention
  • FIG. 2 and 3 are front and plan views illustrating a further embodiment of this invention
  • FIG 4 is a perspective view illustrating the configuration of each rudder of the proa illustrated in FIG 2
  • FIG. 5 is a perspective view of the hull panels for the main hull illustrated in FIGS. 2 and 3
  • FIG 6 illustrates a typical building jig.
  • the proa 10 illustrated in Fig 10 utilises an internally stressed sail assembly 11 whereby mast stay tensions are reacted against the mast 12 and the base beam 13 and thus do not induce high bending moments in the cross beams or deck 14.
  • a relatively light proa can therefore be given a relatively wide beam and a relatively large sail assembly 11.
  • the mast 12 is supported by rigging which includes a prop 15 stayed by stays 16 which may be fixed or running to enable the prop 15 and the mast 12 to be pivoted fore and aft.
  • the mast 12 is supported rotatably on the base beam 13 which is connected universally at 17 to the float deck 18.
  • a forestay 19 and opposed side stays 20 secure the mast to the base beam 15.
  • the prop 15 connects to the front of the mast 12 above the stays 19 and 20 by a universal mounting 22.
  • the prop 15 is a telescopic strut which may be selectively extended or retracted to vary the inclination of the sails and thus maintain them at maximum driving inclination.
  • the float 23 is tubular and the end sections 24 are supported on central tubular stub axles 25 which pass through bearing tubes 26 fixed to the float 23 so that they may be rotated about a longitudinal axis 28 to pivot the end sections 24 and thus the steerable foils 27 about the axis 26, as required.
  • the rudders 27 are steered through right angle drive gearboxes 31 by steering controls 32 which pass through the hollow stub axles 25 and the cross beams 14 to the main hull 35. Further control cables pass around the exposed end portions 37 of the stub-axles 25 and through the cross arms 14 to the cockpit to enable rotation of the end portions 24 and thus the inclination of the rudders 27 and their projected vertical area to be selectively varied.
  • the centre of pressure of the sails will be behind the centreline of the vessel. Accordingly, the centre of lateral resistance can be varied fore and aft by varying the relative athwartship inclinations of the rudders.
  • the leading rudder can be inclined at 45 degrees while the trailing rudder remains vertical. The latter can be used for steering and the leading rudder trimmed to create lift to counteract sail forces which tend to depress the leading end of the proa 10.
  • the sail assembly 11 can also be trimmed fore and aft so that both leading and trailing rudders are operated to provide lift to windward.
  • the sail assembly 11 with the base beam 13 is pivoted about the axis extending between the deck mounting 17 and the prop mounting 22 to position the sail assembly 11 for use in either direction and to turn the proa from one windward heading to the other.
  • Front and rear control lines 41 and 42 are provided for this purpose.
  • the sails 43 and 44 may be adjusted in conventional manner.
  • a solid wing can also provide such benefits.
  • the latter is pivoted from a base point aft of its leading edge so that the sail will be partially balanced to reduce control forces.
  • the sail assemblies described above can be pivoted so as to be overbalanced if desired.
  • the proa 50 illustrated in Figs. 2 to 5 differs from the previous embodiment principally in that the deck assembly 51 includes folding cross beams 52 whereby the overall width of the proa 50 may be reduced and in that the mast 53 is mounted at the front of the base beam 54 whereby a single working sail 55 is utilized.
  • This arrangement permits the mast to be swung to a position adjacent the vessels cockpit to provide ready access to the mast for sail hoisting or reefing purposes.
  • Off wind sails such as spinnakers and reachers may be set, preferably from a halyard 56 exiting the mast 53 below the connection 57 between the mast 53 and the supporting prop 58. This arrangement permits the off wind sails to remain hoisted during a jibe when the off wind sails may pass beneath the prop 58.
  • a pole 59 for the off wind sails may be supported on the mast as illustrated.
  • connection between the mast 53 and the base beam 54 includes a pair of struts 60 which extend from connections at opposite sides of the base beam 54 to respective connections at opposite sides of the mast 53.
  • the mast may be rotatably connected to the front end of the base beam 54 and to the upper ends of the struts 60 to enable the mast to rotate about a longitudinal axis independent of the base beam 54.
  • a compression strut 62 and associated stay 63 may be used to spread the strut loads along the mast.
  • the sail 55 is hoisted along a mast groove 61 by a halyard 63 and its tack is secured to the base mounting 64.
  • the base beam 54 is hollow to form a receptacle for the lowered sail 55.
  • the base beam is illustrated in its athwartship position. It can be pivoted by respective control lines 65 to a selected fore and aft attitude at either side of the position illustrated.
  • the float 70 is connected to the main hull 71 by the cross beams 52. The latter are bolted at 73 to the side walls 74 of an integral pod 75 which extends centrally from the main hull 71.
  • the outer ends of the beams 52 carry vertically disposed tubular sockets 76 which engage rotatably about posts 77.
  • Guide frames 78 nest between the upper and lower members 79 of the beams 52. Their outer ends 80 connect pivotally to members 79 while their inner ends connect pivotally at 81 to the side walls 74.
  • the guide frames 78 may pivot about their respective side wall mountings 81 from a stowed position within the cross beams 52 when the latter are extended as shown, to a folded position at which their outer ends 80 support the cross arms 52 in a retracted position as illustrated in dotted outline.
  • Each dagger assembly 80 includes a symmetrical flat sided foil 81 supporting a rudder stock 82 which extends rotatably therethrough.
  • the rudder stock supports a conventional spade rudder 83 and carries a steering wheel 84 at its upper end.
  • the wheel 84 is connected by cables 85 to respective tillers 86 mounted pivotally at 87, intermediate the cable connections, to the pod 75.
  • the arrangement is such that either or both the front and/or back rudder may be used. Each will automatically align itself in a trailing attitude.
  • the centre of lateral resistance will be biassed to the rear to balance sail forces.
  • the cables 85 are adjusted so that the front tiller is pivoted away from the pod 75 when the front rudder is in a trailing position.
  • the rudder profile is such that it may fit within the confines of a dagger case adapted to accommodate the dagger foil 81 and of course if desired only one foil may be fitted with a rudder if desired.
  • the main hull 71 is constructed by forming the flat side panels 90, loosely connecting their lower edges 91 to the intermediate side edges of the bottom panel 95 (shown dotted) and their curved front edges 96 together. The top edges are then pulled apart to the desired extent such as is illustrated by the dashed lines 97 and the joins made fast in conventional manner such as by forming with glass tape.
  • the curved ends 96 induce significant lateral curvature in the side panels 90 which is otherwise difficult to achieve.
  • This curvature forms a desirable underwater shape in the lower portion of the hull and greatly rigidifies the side panels.
  • a relatively lightweight structure can be formed.
  • the hull side panels 90 can be assembled to the bottom panel 95 in an inverted attitude with the bottom panel supported in an elevated position on a central jig and with the side panels supported on opposed pairs of arms pivotally connected to the jig. The side panels are pulled apart by pulling the arms apart.
  • Fig. 6 illustrates a suitable jig for this purpose.
  • windward hull or the leeward hull may constitute the heavy hull or the accommodation hull, as desired, depending upon the desired application.

Landscapes

  • 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)
  • Wind Motors (AREA)

Abstract

Le bateau à voile décrit (10) comprend une ou plusieurs voiles (43, 44) dont chacune est soutenue par un mât (12), qui est fixé au bateau, pivotant autour d'un axe (43) s'étendant entre un support de pivotement inférieur (17) situé sur le flotteur sous le vent (23) et un support de pivotement supérieur formé par une épontille ou un étai haubanné (15) soutenu par la coque au vent (35). Chaque voile (43, 44) est maintenue étarquée entre le mât (12) et un support correspondant (13) qui tourne avec le mât. On oriente les voiles en faisant tourner les voiles avec le mât (12) et le support (13).
PCT/AU1989/000240 1988-05-31 1989-05-31 Bateaux a voile Ceased WO1989011994A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPI854888 1988-05-31
AUPI8548 1988-05-31

Publications (1)

Publication Number Publication Date
WO1989011994A1 true WO1989011994A1 (fr) 1989-12-14

Family

ID=3773122

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1989/000240 Ceased WO1989011994A1 (fr) 1988-05-31 1989-05-31 Bateaux a voile

Country Status (1)

Country Link
WO (1) WO1989011994A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2657323A1 (fr) * 1990-01-22 1991-07-26 Moulin Olivier Perfectionnement a un greement inclinable.
FR2675461A1 (fr) * 1991-04-17 1992-10-23 Julien Pierre Dispositif aerodynamique a voile pour la propulsion par le vent.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3802366A (en) * 1971-06-15 1974-04-09 J Mankawich Hydrofoil sailboat
AU5858280A (en) * 1979-05-28 1980-12-04 Williams, A.M. Sailing rig
AU2181783A (en) * 1982-12-03 1984-06-07 Deratz, Stephen Francis Sail mounting and control
US4503795A (en) * 1980-09-30 1985-03-12 Richard Krans Sailing craft
AU3770885A (en) * 1984-01-16 1985-07-25 Worldly Innovations Multi-hull sailing vessel with variable lift
WO1986007325A1 (fr) * 1985-06-03 1986-12-18 Sarrinen Pty. Ltd. Voiliers

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3802366A (en) * 1971-06-15 1974-04-09 J Mankawich Hydrofoil sailboat
AU5858280A (en) * 1979-05-28 1980-12-04 Williams, A.M. Sailing rig
US4503795A (en) * 1980-09-30 1985-03-12 Richard Krans Sailing craft
AU2181783A (en) * 1982-12-03 1984-06-07 Deratz, Stephen Francis Sail mounting and control
AU3770885A (en) * 1984-01-16 1985-07-25 Worldly Innovations Multi-hull sailing vessel with variable lift
WO1986007325A1 (fr) * 1985-06-03 1986-12-18 Sarrinen Pty. Ltd. Voiliers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2657323A1 (fr) * 1990-01-22 1991-07-26 Moulin Olivier Perfectionnement a un greement inclinable.
FR2675461A1 (fr) * 1991-04-17 1992-10-23 Julien Pierre Dispositif aerodynamique a voile pour la propulsion par le vent.

Similar Documents

Publication Publication Date Title
US4685410A (en) Wing sail
US3802366A (en) Hydrofoil sailboat
US4610212A (en) Fast self righting catamaran
US6499419B1 (en) Hydrofoil wing system for monohull keel boat
WO1986002330A1 (fr) Vehicule volant/naviguant a aile pivotante
US6341571B1 (en) Wind-powered air/water interface craft having various wing angles and configurations
US5410977A (en) Rudderless sailboat
JPH0788199B2 (ja) 帆艇および帆船の推進装置
CA1127911A (fr) Greement de bateau a voile
US5076186A (en) Sailboat provided with an anti-heeling and support device
US3788257A (en) Fin-keel catamaran
US5088431A (en) Sailing vessels
JPS58118494A (ja) 帆走装置推進用の帆
US6116177A (en) Mast with top boom
US5392726A (en) Sailboat
EP0070673B1 (fr) Embarcation propulsée par le vent
US5816180A (en) Rotating rig
US5724905A (en) Sailboats
WO1989011994A1 (fr) Bateaux a voile
US4604959A (en) Wind-propelled craft
US6662738B2 (en) Lifting-sail boat apparatus and method
US4478164A (en) Wind-propelled craft
GB2122561A (en) Sailboard
US4796554A (en) Sailboat
US4911093A (en) Rigging and sail system for sailboat

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LU NL SE