EP0709286B1 - Vorrichtung zur Verbesserung der Richtungsstabilität von Wasserfahrzeugen - Google Patents

Vorrichtung zur Verbesserung der Richtungsstabilität von Wasserfahrzeugen Download PDF

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Publication number
EP0709286B1
EP0709286B1 EP19950202909 EP95202909A EP0709286B1 EP 0709286 B1 EP0709286 B1 EP 0709286B1 EP 19950202909 EP19950202909 EP 19950202909 EP 95202909 A EP95202909 A EP 95202909A EP 0709286 B1 EP0709286 B1 EP 0709286B1
Authority
EP
European Patent Office
Prior art keywords
rudder
boat
trailing edge
directional stability
turned
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.)
Expired - Lifetime
Application number
EP19950202909
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English (en)
French (fr)
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EP0709286A1 (de
Inventor
John Elmes
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.)
Individual
Original Assignee
Individual
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
Priority claimed from GB9421869A external-priority patent/GB9421869D0/en
Application filed by Individual filed Critical Individual
Publication of EP0709286A1 publication Critical patent/EP0709286A1/de
Application granted granted Critical
Publication of EP0709286B1 publication Critical patent/EP0709286B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • This invention provides for a non transom hung boat's rudder to be turned to any desired angle and will involve the temporary retraction of the usual stops if fitted. It may be turned to 180° ⁇ the required steering angle when the boat reverses, or across the boat's centre-line thus inhibiting fore and aft movement of the boat while facilitating sideways movement, eg while docking.
  • the rotation of the rudder stock is achieved by replacing the normal quadrantwith suitable linkages, eg a pulley or large sector of a pulley, a chain drive or a system of levers or gears, or an electric or hydraulic drive.
  • suitable linkages eg a pulley or large sector of a pulley, a chain drive or a system of levers or gears, or an electric or hydraulic drive.
  • a horizontal pivot atop the stock would allow the tiller to be rotated in the vertical plane during rotation of the rudder to enable the rudder to be reversed and the tiller to settle in its
  • Fig 1 shows the boat in forward motion with the rudder (with or without stops which nominally restrict movement to 35-40°) subjected to normal fluid flow, eg from its leading edge towards its trailing edge.
  • the rudder stock is positioned as usual at the leading edge or, in the case of a balanced rudder as shown, nearer the leading edge that the trailing edge. The rudder will thus tend to "feather".
  • the rudder may be turned through a nominal 180° in order to maintain the above flow while the boat is moving a stern as in fig 2,
  • the rudder is tending to "feather" and not oversteer, as is normally the case, resulting in unwanted forces being applied.It is also more efficient since the fluid flow is maintained, especially in thecase of a streamlined teardrop section, from the leading towards the trailing edge.
  • the rudder may be set nominally across the direction of normal flow as in fig 3. This position may be adopted to reduce boat speed when necessary, the effect being slightly similar to the tail parachute on an aircraft. It also facilitates a rotational movement in azimuth of the bow and/or stern of a boat around the keel when desired, as when manoeuvering near a quay under warps or using the "propellor walk” effect when it also inhibits the sometimes unwanted forward or aft movement which tends to accompany the "prop walk”.
  • the protection rendered by the 90° selection when the rudder is not in normal use allows the rudder to be positioned, when under way, such that its trailing edge extends aft of the boat's stern or transom.
  • balance, anti-balance and or trim tabs may be employed on the rudder's trailing edge and connected when normally under way to a simple, external and disconnectable linkage (fig 1) directly to a small hand control, any remote control, windvane (fig 1), autopilot or even the ship's normal wheel, by which control may be achieved with a dramatic reduction in rudder torque loads.

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

Claims (2)

  1. Ein Wasserfahrzeug bestehend aus Schiffskörper, Antriebssystem und einem Ruder am Heck des Schiffskörpers, wobei das Ruderlager sich vor dem Spiegel befindet und das Ruder derart daran befestigt ist, dass es um 360Grad gedreht werden kann, dadurch gekennzeichnet, dass eventuell eingebaute Anschläge zurückziehbar sind, wodurch das Ruder in jeden gewünschten Winkel eingestellt werden kann, wobei die Ruderlager näher an der Führungskante als an der Abrisskante des Ruders liegt und die Abrisskante 80 plaziert ist, dass sie bei Vorwärtsbewegung des Bootes achtern über das Bootsheck oder den Spiegel hinausragt.
  2. Ein Wasserfahrzeug mit Anspruch wie unter 1, indem das Steuerruder mit Stiften an der Abrisskante ausgestattet ist, die durch eine außen entlanggeführte Verbindung mit einem Verstellmechanismus verbunden sind.
EP19950202909 1994-10-31 1995-10-27 Vorrichtung zur Verbesserung der Richtungsstabilität von Wasserfahrzeugen Expired - Lifetime EP0709286B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB9421869 1994-10-31
GB9421869A GB9421869D0 (en) 1994-10-31 1994-10-31 System to facilitate increased directional control of waterborne craft
GB9502731A GB2289248B (en) 1994-10-31 1995-02-13 System to enhance directional stability and control of waterborne vessels
GB9502731 1995-02-13

Publications (2)

Publication Number Publication Date
EP0709286A1 EP0709286A1 (de) 1996-05-01
EP0709286B1 true EP0709286B1 (de) 1998-12-30

Family

ID=26305893

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950202909 Expired - Lifetime EP0709286B1 (de) 1994-10-31 1995-10-27 Vorrichtung zur Verbesserung der Richtungsstabilität von Wasserfahrzeugen

Country Status (2)

Country Link
EP (1) EP0709286B1 (de)
DE (1) DE69506995T2 (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1033080B (de) * 1956-11-21 1958-06-26 L Kort Dipl Ing Frei tragendes Schiffsruder, insbesondere Duesenruder
FR2105724A5 (de) * 1970-09-18 1972-04-28 Clement Philippe
SE388398B (sv) * 1975-11-10 1976-10-04 Rosen C D Vindroder for yachter

Also Published As

Publication number Publication date
EP0709286A1 (de) 1996-05-01
DE69506995T2 (de) 1999-08-26
DE69506995D1 (de) 1999-02-11

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