WO1983001934A1 - Navires pourvus d'une timonerie - Google Patents

Navires pourvus d'une timonerie Download PDF

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Publication number
WO1983001934A1
WO1983001934A1 PCT/AU1982/000191 AU8200191W WO8301934A1 WO 1983001934 A1 WO1983001934 A1 WO 1983001934A1 AU 8200191 W AU8200191 W AU 8200191W WO 8301934 A1 WO8301934 A1 WO 8301934A1
Authority
WO
WIPO (PCT)
Prior art keywords
rudder
keel
vessel
vessel according
hull
Prior art date
Application number
PCT/AU1982/000191
Other languages
English (en)
Inventor
Donald George Daw
Original Assignee
Donald George Daw
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 Donald George Daw filed Critical Donald George Daw
Priority to AU91207/82A priority Critical patent/AU9120782A/en
Publication of WO1983001934A1 publication Critical patent/WO1983001934A1/fr

Links

Classifications

    • 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
    • B63H25/06—Steering by rudders
    • B63H25/38—Rudders
    • 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
    • B63H25/06—Steering by rudders

Definitions

  • This invention relates to means for steering vessels and in particular it relates to the steering of vessels of the sail driven type but the invention is not necessarily limited thereto.
  • OMPI barge can be controlled during towing from a bank to urge the barge away from the bank.
  • vessels particularly sailing vessels, of the type having a keel at or adjacent the medial part of the hull and normally steered by a rudder at the rear of the hull.
  • One of the problems with vessels, particularly sailing vessels, is to achieve effective control of direction with a minimum of water drag, and with the conventional type of control where a rudder is positioned at the rear of the vessel, generally in line with but to the rear of the keel, the rudder operates in disturbed water due to movement of the hull and keel through the water ahead of the rudder.
  • One of the objects of the present invention is to reduce rudder drag as it exists with the assemblies used at the present time. Being more efficient the surface area of the rudder blade can be reduced.
  • the rudder instead of being placed at the rear of the vessel is moved forwardly to a position where it operates in relatively undisturbed water, and thus the rudder is placed forward of the keel and preferably in line therewith unless multiple forward rudders are used, so that water flow is first over the surfaces of the rudder and then over the keel.
  • Having the rudder placed forward of the keel increases the manoeuvrability of the vessel, including the ability of the vessel to tack through the wind.
  • Such a vessel can be constructed much as hereto ⁇ fore but with a forward rudder or rudders, and it will be realised that for instance in racing yachts the use of a forward rudder or rudders with a trailing keel will give substantially less drag than at the present time by maintaining a better water flow along the keel.
  • Such a vessel comprises a hull having a depending keel intermediate the bow and stern characterised by rudder means forward of the central part of the keel.
  • FIG. 1 is a side elevation of a yacht showing the invention applied by use of a rudder forward of the keel,
  • FIG. 2 is a plan view of the outline of the hull of the yacht to show the position of the rudder and the keel,
  • FIG. 3 shows how the rudder can be angled or raked in relation to the vertical to give different lift and steering effects, the dotted lines indicating opposite angling of the rudder.
  • a vertical rudder could be used but with means to angle it to either position.
  • FIG. 4 is a side elevation showing a forward and a rear rudder which could be oppositely steered or independently operated.
  • FIG. 5 is a plan view of FIG. 4 showing the forward and rear rudder in relation to the keel
  • FIGS. 6 and 7 show in side elevation and plan how forward twin rudders can be arranged, these figures showing also a rear rudder which can be steered oppositely to the forward rudder to assist turning the vessel about the.keel or it can be used as a stabiliser or can be omitted.
  • FIGS.. 8 and 9 show the invention applied to a catamaran.
  • the hull 1 of the vessel has the usual keel 2 and mast 3 together with its rigging, and has near the bow 4 a rudder 5 projecting downwardly from a stem 6 to which steering torque is applied.
  • the rudder is positioned forwardly of the keel 2 to be in relatively undisturbed water and in that position gives a steering effect with the keel 2 acting as a stabiliser about which the steering is generally effected.
  • the rudder 7 is shown as being displaced from a vertical position to a rearwardly sloping position, or it may be forwardly angled as shown in the dotted lines at 8, the angle of the rudder being either permanent or adjustable between the two positions shown.
  • the steering stem 9 of the rudder may be at the same angle as the rudder or may be normal to the longitudinal centre line of the vessel, the steering stem 9 being journaled in bearings in the hull in any conventional manner.
  • the rudder 11 is forward of the keel 2 and is rotatable about the axis of a steering stem 12 journaled in bearings in the hull so that the the rudder can be angled, but in this embodiment a rear rudder 13 is used and these two rudders 11 and 13 can be angled oppositely to both give a turning moment about the keel 2,
  • the two rudders 11 and 13 can be interconnected for simultaneous opposite movement but need not necessarily move in the same ratio or be of similar dimensions, and generally the rudders can be smaller because of the compound steering action.
  • a rear rudder 17 is shown in dotted lines this rear rudder 17 allowing further control of steering about the keel 2 by opposite angling of the forward and rear rudders respectively, or the rear rudder 17 may be a fixed or variable angle vane for the purposes of stabilisation.
  • FIGS. 8 and 9 In FIGS. 8 and 9 is shown how the invention can be applied to a catamaran, the two hulls 20 and 21 being joined by a platform 22 as usual which can extend longitudinally any required distance.
  • a pair of centre-boards 23 and 24 form keels and steering' is by forward rudders 25 and 26 rotationally supported from a strut 27 joining the two hulls 20 and 21.
  • the rudders 25 and 26 could project downwardly directly from the hulls 20 and 21 but are preferably mounted as shown to allow them to fold back in shallow water as is usual in catamarans.
  • the centre-boards 23 and 24 can be drawn upwards in shallow water.
  • Assisting rear rudders could also be used in the manner described with reference to FIGS. 4 and 5 or 6 and 7.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Toys (AREA)

Abstract

Navire possédant au moins une coque (1) avec une quille (2) intermédiaire entre la proue (4) et la poupe, possédant son gouvernail (5) ou ses gouvernails à proximité de la proue (4) disposés en avant et espacés de la quille (2), avec ou sans aube ou gouvernail dans la poupe.
PCT/AU1982/000191 1981-11-30 1982-11-19 Navires pourvus d'une timonerie WO1983001934A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU91207/82A AU9120782A (en) 1981-11-30 1982-11-19 Steering vessels

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPF1753811130 1981-11-30
AUPF175381 1981-11-30

Publications (1)

Publication Number Publication Date
WO1983001934A1 true WO1983001934A1 (fr) 1983-06-09

Family

ID=3769282

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1982/000191 WO1983001934A1 (fr) 1981-11-30 1982-11-19 Navires pourvus d'une timonerie

Country Status (4)

Country Link
EP (1) EP0094944A4 (fr)
JP (1) JPS58501989A (fr)
IT (1) IT8268392A0 (fr)
WO (1) WO1983001934A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2238766A (en) * 1988-12-15 1991-06-12 Ernest Thomas Ashman Reducing leeward drift in sailing vessels
FR2725686A1 (fr) * 1994-10-13 1996-04-19 Duvaux Philippe Systeme anti-derive pour navire eolien

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB174020A (en) * 1920-07-07 1922-01-09 Anton Flettner Improved steering device for ships and the like
DE450590C (de) * 1926-07-03 1927-10-07 Friedrich Feldmann In der Hoehenrichtung einstellbares Bugruder fuer auf flachen Gewaessern fahrende Boote, beispielsweise Torfschiffe
US1682815A (en) * 1924-12-03 1928-09-04 Packard Motor Car Co Boat
GB327385A (en) * 1928-12-01 1930-04-01 Hubert Scott Paine Improvements in or relating to steering ships and the like
GB395336A (en) * 1930-11-06 1933-07-13 Naamlooze Vennootschap Electro Improvements in shipgoverning
AU1529366A (en) * 1966-12-14 1968-06-20 Anglian Development Limited Improvements in and relating to watercraft ofthe hydroplane type
US3397670A (en) * 1966-03-01 1968-08-20 Timothy J. Bedford Water craft
AU6299073A (en) * 1972-12-06 1975-05-29 Boeing Company, The Automatic landing system
AU6536074A (en) * 1974-02-08 1975-08-14 Dynafoil, Inc Hydrofoil watercraft

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB107330A (en) * 1916-11-14 1917-06-28 Niels Jantzen Improvements in or connected with Ships' Rudders.
US1356300A (en) * 1920-05-25 1920-10-19 Mcintyre Malcolm Sailing-craft
FR682956A (fr) * 1929-10-09 1930-06-04 Levaux Bateau à deux gouvernails
US4082053A (en) * 1976-09-30 1978-04-04 Woodward William R Multirudder steering system for multihull boats

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB174020A (en) * 1920-07-07 1922-01-09 Anton Flettner Improved steering device for ships and the like
US1682815A (en) * 1924-12-03 1928-09-04 Packard Motor Car Co Boat
DE450590C (de) * 1926-07-03 1927-10-07 Friedrich Feldmann In der Hoehenrichtung einstellbares Bugruder fuer auf flachen Gewaessern fahrende Boote, beispielsweise Torfschiffe
GB327385A (en) * 1928-12-01 1930-04-01 Hubert Scott Paine Improvements in or relating to steering ships and the like
GB395336A (en) * 1930-11-06 1933-07-13 Naamlooze Vennootschap Electro Improvements in shipgoverning
US3397670A (en) * 1966-03-01 1968-08-20 Timothy J. Bedford Water craft
AU1529366A (en) * 1966-12-14 1968-06-20 Anglian Development Limited Improvements in and relating to watercraft ofthe hydroplane type
AU6299073A (en) * 1972-12-06 1975-05-29 Boeing Company, The Automatic landing system
AU6536074A (en) * 1974-02-08 1975-08-14 Dynafoil, Inc Hydrofoil watercraft

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2238766A (en) * 1988-12-15 1991-06-12 Ernest Thomas Ashman Reducing leeward drift in sailing vessels
GB2238766B (en) * 1988-12-15 1993-12-15 Ernest Thomas Ashman Improvements in the performance of yachts and dinghies
FR2725686A1 (fr) * 1994-10-13 1996-04-19 Duvaux Philippe Systeme anti-derive pour navire eolien

Also Published As

Publication number Publication date
JPS58501989A (ja) 1983-11-24
EP0094944A1 (fr) 1983-11-30
EP0094944A4 (fr) 1985-02-28
IT8268392A0 (it) 1982-11-29

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