EP0059345A1 - Planche à voile pour haute vitesse - Google Patents

Planche à voile pour haute vitesse Download PDF

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Publication number
EP0059345A1
EP0059345A1 EP82100959A EP82100959A EP0059345A1 EP 0059345 A1 EP0059345 A1 EP 0059345A1 EP 82100959 A EP82100959 A EP 82100959A EP 82100959 A EP82100959 A EP 82100959A EP 0059345 A1 EP0059345 A1 EP 0059345A1
Authority
EP
European Patent Office
Prior art keywords
surfboard
underside
displacement body
buoyancy
board
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.)
Withdrawn
Application number
EP82100959A
Other languages
German (de)
English (en)
Inventor
Karl Höfler
Ernst-Dieter Dipl.-Ing. Kilian
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.)
Airbus Defence and Space GmbH
Original Assignee
Messerschmitt Bolkow Blohm AG
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 Messerschmitt Bolkow Blohm AG filed Critical Messerschmitt Bolkow Blohm AG
Publication of EP0059345A1 publication Critical patent/EP0059345A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B32/00—Water sports boards; Accessories therefor
    • B63B32/60—Board appendages, e.g. fins, hydrofoils or centre boards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B32/00—Water sports boards; Accessories therefor
    • B63B32/50—Boards characterised by their constructional features

Definitions

  • the invention relates to a high-speed surfboard for the strong wind range.
  • Such windsurf boards are known in various embodiments and are generally considered to be slide boards with a flat underwater ship, predominantly in the rear board area. These surfboards are preferably used for high-speed trips in strong winds from 3 to 4 Beaufort. Due to the flat rear section, they can be brought into the drag-resistant sliding phase at an appropriate angle of attack around the transverse axis and at a corresponding speed, which in turn enables a higher overall speed of the vehicle.
  • the surfboards for the low wind range have a strongly rounded underwater hull, which results in lower resistance values in the much slower displacement process and thus in the low wind range provides better speeds than a so-called gliding board.
  • gliding board can never be brought into the optimal sliding phase for high speeds.
  • the present invention is based on the optimization of the underwater part of a surfboard for the sliding phase, with the purpose of reducing the harmful hydrodynamic drag while maximizing the buoyancy achieved.
  • the general idea of the invention provides for the surfboard, which is optimized for the sliding phase, to be changed by optionally attaching one or more buoyancy displacement bodies with a fixed and / or variable volume in such a way that it has a largely small wetted surface even in the event of light winds, i.e. i.e., provides the lowest possible hydrodynamic resistance and thus optimal speeds in the so-called displacement phase.
  • the rear of the surfboard 10 is provided with a concave profile 11 in the longitudinal direction, which is directed towards the water surface 15 on the underside of the board.
  • An increase in buoyancy compared to that of the flat plate with the same hydrodynamic resistance can be achieved on the one hand by a corresponding negative curvature 12 or keel 12a in the transverse axis of the board 10 on its underside 10b and on the other hand by attaching tear-off edges 13 to the board sides 10a . In this case, these tear-off edges 13 must extend over the entire length of the underwater area of the stern part immersed in the sliding state.
  • the concave profile 11 in the longitudinal direction of the surfboard 10 together with a negative curvature (concave) 12 or a keel 12a in the transverse axis and arrangement of tear-off edges 13 and one or more buoyancy displacement bodies 14 with a fixed and / or variable volume, the maximum achievable optimum for one High-speed surfboard for use in the so-called "low wind" area - that is, at wind speeds of 1 to 3 Beaufort - achieved.
  • buoyancy displacement body 14 By attaching one or more hydrodynamically shaped buoyancy displacement body 14 with constant or variable volume, the board body 10 is so far out of the When the wind is weak and the speeds that can only be reached are low, only the above-mentioned buoyancy displacers provide the buoyancy required for the surfboard to swim. In this state, the underside of the board 10b is to remain largely unwetted mix resistance value and at the same time the maximum possible speed reached. Depending on the wind strength and body weight of the driver, these buoyancy bodies can be variably installed either in number or in volume.
  • FIG. 2 to 2b show examples of the design of the underside of the board in the rear part, the dashed line representing the underside of the sliding surfboards which have hitherto been prior art.
  • a nagative keel is shown in cross section, while in Fig. 2a a concave curvature is shown.
  • the underside of the board is held parallel to the surface in the middle piece, while the side pieces are provided with a concave curvature which open into tear-off edges 13.
  • FIGS. 3 to 4a Various exemplary embodiments of the arrangement of the displacement body or bodies are given in FIGS. 3 to 4a.
  • FIG. 3 shows a surfboard 10 with a buoyancy displacement body 14 with a fixed volume attached to the underside 10b in the longitudinal central axis, the underside according to FIG. 1 being provided with a concave curvature or keel 11 in the longitudinal direction.
  • Fig. 3a it is shown how the tail board part 10 and its keel 11 on the side surfaces of the underside 10b are equipped with buoyancy displacement bodies 14, which have a fixed volume and are designed to be streamlined.
  • FIG. 3b shows an embodiment like FIG. 3a, only a buoyancy displacement body 14 is also arranged here in the longitudinal axis in the front region of the surfboard 10.
  • FIG. 4 shows a further embodiment in which an elastic, inflatable buoyancy displacement body 14a is attached centrally to the underside 10b of the board.
  • buoyancy displacement body 14 consists of a fixed volume 14b and a variable, inflatable volume 14a.
  • the buoyancy displacement bodies 14 are selected according to their volume so that the water weight displaced by them is about 70% more than the total weight of board and driver. This ensures that the board used in displacement travel can be brought into a sliding phase even at wind speeds of more than 3 Beaufort. While this sliding movement does not yet represent the optimum in the case of the buoyant displacement bodies with a fixed volume, this is achieved by the embodiment according to FIGS. 4 and 4a.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Wind Motors (AREA)
EP82100959A 1981-02-27 1982-02-10 Planche à voile pour haute vitesse Withdrawn EP0059345A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3107401 1981-02-27
DE19813107401 DE3107401A1 (de) 1981-02-27 1981-02-27 Hochgeschwindigkeits-surfbrett

Publications (1)

Publication Number Publication Date
EP0059345A1 true EP0059345A1 (fr) 1982-09-08

Family

ID=6125900

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82100959A Withdrawn EP0059345A1 (fr) 1981-02-27 1982-02-10 Planche à voile pour haute vitesse

Country Status (2)

Country Link
EP (1) EP0059345A1 (fr)
DE (1) DE3107401A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2614868A1 (fr) * 1987-04-25 1988-11-10 Mistral Windsurfing Ag Planche de surf ou planche a voile
WO1991015395A1 (fr) * 1990-04-10 1991-10-17 Posi Trak Channel Systems Ailerons de commande pour planche de surf
FR2744093A1 (fr) * 1996-01-31 1997-08-01 Largilliere Remy Flotteur destine a une utilisation de loisir et sportive
FR2785864A1 (fr) * 1998-11-18 2000-05-19 Gerard Villard Coque pour engin de navigation destine a glisser sur l'eau
DE10145806A1 (de) * 2001-09-17 2003-04-10 Boards & More Ag Zuerich Surfboard
US6935909B2 (en) * 2003-03-03 2005-08-30 Larry Wayne Mann Apparatus and method for a gliding board for fluid riding sports
WO2010033579A2 (fr) 2008-09-17 2010-03-25 Keller John H Conception d'emplanture de planche à voile avec une diminution de la ventilation et une augmentation de la vitesse
WO2014058730A1 (fr) 2012-10-08 2014-04-17 K2 Keller Consulting, Llc Coque de bateau à portance et à plage de vitesse de planage améliorées, et à rendement quasi maximum
DE102016110761A1 (de) 2016-06-10 2017-12-14 Waterrebels Ug (Haftungsbeschränkt) Surfbrett
US10647385B2 (en) 2017-08-29 2020-05-12 John H. Keller Advances in watercraft hull lift, efficiency, and reduced hump drag with increased stability
US20230028303A1 (en) * 2021-07-20 2023-01-26 William Aldis Wurts Three Piece Blank for Forming a Surf Craft

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2512928A1 (de) * 1975-03-24 1976-08-05 Werner Kunz Segelbrett
DE2519224A1 (de) * 1975-04-30 1976-11-18 Pertramer Segelbrett

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2512928A1 (de) * 1975-03-24 1976-08-05 Werner Kunz Segelbrett
DE2519224A1 (de) * 1975-04-30 1976-11-18 Pertramer Segelbrett

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2614868A1 (fr) * 1987-04-25 1988-11-10 Mistral Windsurfing Ag Planche de surf ou planche a voile
WO1991015395A1 (fr) * 1990-04-10 1991-10-17 Posi Trak Channel Systems Ailerons de commande pour planche de surf
FR2744093A1 (fr) * 1996-01-31 1997-08-01 Largilliere Remy Flotteur destine a une utilisation de loisir et sportive
FR2785864A1 (fr) * 1998-11-18 2000-05-19 Gerard Villard Coque pour engin de navigation destine a glisser sur l'eau
EP1002714A1 (fr) 1998-11-18 2000-05-24 Gérard Villard Coque pour engin de navigation destiné à glisser sur l'eau
DE10145806A1 (de) * 2001-09-17 2003-04-10 Boards & More Ag Zuerich Surfboard
US6935909B2 (en) * 2003-03-03 2005-08-30 Larry Wayne Mann Apparatus and method for a gliding board for fluid riding sports
WO2010033579A2 (fr) 2008-09-17 2010-03-25 Keller John H Conception d'emplanture de planche à voile avec une diminution de la ventilation et une augmentation de la vitesse
EP2337732A2 (fr) * 2008-09-17 2011-06-29 John H. Keller Conception d'emplanture de planche à voile avec une diminution de la ventilation et une augmentation de la vitesse
EP2337732A4 (fr) * 2008-09-17 2013-08-14 John H Keller Conception d'emplanture de planche à voile avec une diminution de la ventilation et une augmentation de la vitesse
US8622013B2 (en) 2008-09-17 2014-01-07 John H. Keller Sailboard step design with less ventilation and increased speed
WO2014058730A1 (fr) 2012-10-08 2014-04-17 K2 Keller Consulting, Llc Coque de bateau à portance et à plage de vitesse de planage améliorées, et à rendement quasi maximum
US9242699B2 (en) 2012-10-08 2016-01-26 K2 Keller Consulting, Llc Watercraft hull with improved lift, planing speed range, and near maximum efficiency
DE102016110761A1 (de) 2016-06-10 2017-12-14 Waterrebels Ug (Haftungsbeschränkt) Surfbrett
WO2017212041A1 (fr) 2016-06-10 2017-12-14 Waterrebels Ug (Haftungsbeschränkt) Planche de surf
US10647385B2 (en) 2017-08-29 2020-05-12 John H. Keller Advances in watercraft hull lift, efficiency, and reduced hump drag with increased stability
US20230028303A1 (en) * 2021-07-20 2023-01-26 William Aldis Wurts Three Piece Blank for Forming a Surf Craft
US11649013B2 (en) * 2021-07-20 2023-05-16 William Aldis Wurts Three piece blank for forming a surf craft

Also Published As

Publication number Publication date
DE3107401A1 (de) 1982-09-23

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH FR GB IT LI NL

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19830814

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KILIAN, ERNST-DIETER, DIPL.-ING.

Inventor name: HOEFLER, KARL