FR2563177A1 - Retractable and articulated foil profiles intended for reducing the drag of a float - Google Patents

Retractable and articulated foil profiles intended for reducing the drag of a float Download PDF

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Publication number
FR2563177A1
FR2563177A1 FR8406119A FR8406119A FR2563177A1 FR 2563177 A1 FR2563177 A1 FR 2563177A1 FR 8406119 A FR8406119 A FR 8406119A FR 8406119 A FR8406119 A FR 8406119A FR 2563177 A1 FR2563177 A1 FR 2563177A1
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France
Prior art keywords
foil
drag
lift
float
hydro
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FR8406119A
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French (fr)
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FR2563177B1 (en
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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 
    • B63B41/00—Drop keels, e.g. centre boards or side boards ; Collapsible keels, or the like, e.g. telescopically; Longitudinally split hinged keels
    • 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
    • B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
    • B63B1/24—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type
    • B63B1/28—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type with movable hydrofoils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
    • B63B39/06—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water
    • B63B2039/065—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water the foils being pivotal about an axis substantially parallel to the longitudinal axis of the vessel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B41/00—Drop keels, e.g. centre boards or side boards ; Collapsible keels, or the like, e.g. telescopically; Longitudinally split hinged keels
    • B63B2041/003—Collapsible keels, or the like, e.g. telescopically; Longitudinally split hinged keels

Abstract

Retractable and articulated plane foil device making possible complete retraction, or complete folding up or the modification of its lift by variation of its projected surface area. This device makes it possible to: - on the one hand reduce until completely eliminated the drag of the foil, - on the other hand, vary the lift of a foil via a simple command. This type of foil is applicable to all types of floats.

Description

PROFILS HYDROPORTSURS ESCAMOTABLES & BR<
ARTICULES DESTINES A DIMINUER LA TRAINEE
D'UN FLOTTEUR.RETRACTABLE HYDROPORTER PROFILES & BR <
ARTICLES FOR REDUCING TRAIL
OF A FLOAT.

L'usage de plans hydroporteurs (foïls) est de plus en plus répandu pour tous les flotteurs à propulsion vélique comme pour ceux à propulsion mécanique. The use of hydroportor planes (foils) is more and more widespread for all floats with vélique propulsion as for those with mechanical propulsion.

L'avantage de l'adjonction de plans hydroporteurs est de diminuer la résistance à l'avancement (tratnée) du flotteur à partir d'une certaine vitesse. The advantage of adding hydroportor planes is to reduce the resistance to the advancement (trowel) of the float from a certain speed.

Les "foïls" sont de deux types: 1. Type foïl partiellement immergé donc facilement escamotable mais
ayant une traînée assez forte 2. Type foïl complètement immergé donc difficilement escamotable mais
ayant une traînée plus faible.There are two types of foils: 1. Partially submerged foil type, therefore easily retractable, but
having a fairly strong drag 2. Type foil completely submerged so difficult to retract but
having a lower drag.

L'intérêt de l'escamotage est de diminuer partiellement ou complètement la traînée du fofl dans le cas où le bateau ayant une vitesse trop faible le foïl augmente la traînée au lieu de la diminuer. The advantage of retraction is to reduce partially or completely the drag of the fofl in the case where the boat having a too low speed the foil increases the drag instead of decreasing it.

De plus, la portance d'un foïl fixe ne peut p s être modulée indépendamment de la vitesse du bateau. In addition, the lift of a fixed line cannot be adjusted independently of the speed of the boat.

BUT.GOAL.

Le but de la présente invention est de diminuer la traînée d'un flotteur à l'aide d'un profil hydroporteur (foïl) relié à ce flotteur, dent la portance pourra varier de la portance maximum jusqu'd une portance nulle, par des modifications de sa géométrie et par la modification de sa position par rapport au flotteur. The object of the present invention is to reduce the drag of a float using a hydroportor profile (foil) connected to this float, tooth the lift may vary from the maximum lift to zero lift, by modifications to its geometry and by modification of its position relative to the float.

De plus, dans le cas où le flotteur est propulsé par le vent, il comportera alors un plan antidérive qui supportera les fons, ce qui évitera la tratnée du support de fon .  In addition, in the case where the float is propelled by the wind, it will then include an anti-drift plane which will support the funnels, which will avoid the tratnea of the fon support.

De plus, dans le cas a la vitesse atteinte par le flotteur ne nécessite pas dc fofl, celui-ci s'escamote complètement dans le flotteur pour éviter une tratnée parasite. In addition, in the case at the speed reached by the float does not require dc fofl, it retracts completely in the float to avoid parasitic tratnea.

De plus, l'ensemble foïl et son support, peut pivoter autour d'un axe horizontal pour faire varier l'angle d'incidence du foll, ce qui donne une deuxième possibilité de variation de portance.  In addition, the foil assembly and its support can pivot around a horizontal axis to vary the angle of incidence of the foll, which gives a second possibility of variation in lift.

GEOMETRIE DE REPLIAGE ET D'ESCAMOTAGE.FOLDING AND ESCAMOTAGE GEOMETRY.

- Mouvement du foïl en vertical (figure 1)s
Le foïl est placé sous le flotteur, il est composé de deux ailes repliables et escamotables de manière continue. Le foïl va passer de la position 1 à la position 2 pour finir à la position 3.- Vertical movement of the foil (Figure 1) s
The foil is placed under the float, it is made up of two continuously folding and retractable wings. The wire will move from position 1 to position 2 to finish at position 3.

(La portance du foïl étant, toutes choses égales par ailleurs proportionnelle à la surface projetée sur un plan horizontal (projection verticale)). (The lift of the foil being, all other things being equal proportional to the surface projected on a horizontal plane (vertical projection)).

En passant de la position 1 à la position 2, la portance diminue et devient nulle lorsque les deux ailes sont verticales. En passant de la position 2 à la position 3, la portance devient nulle et de plus la traînée propre du foïl diminue jusqu'à s'annuler complètement lorsque le tofl est complètement rentré dans le flotteur. Passing from position 1 to position 2, the lift decreases and becomes zero when the two wings are vertical. By passing from position 2 to position 3, the lift becomes zero and moreover the proper drag of the foil decreases until it is completely canceled when the tofl is fully retracted into the float.

- Cinématique de chaque aile du foïl (ou de l'aile) dans le cas d'un
foïl à une seule aile (figure 2 et figure 3)s
Figure 2: Chaque aile du foïl (1) est montée sur un axe approximativement horizontal et est terminée en forme de secteur denté.- Kinematics of each wing of the foil (or of the wing) in the case of a
single wing foil (Figure 2 and Figure 3) s
Figure 2: Each wing of the foil (1) is mounted on an approximately horizontal axis and is finished in the form of a toothed sector.

Entre ces deux secteurs dentés se place un doigt annelé (2) qui coulisse dans un guide (3). Between these two toothed sectors is placed a ringed finger (2) which slides in a guide (3).

Le déplacement vers le haut ou vers le bas du doigt va fermer ou ouvrir les deux ailes du foïl. Moving the finger up or down will close or open both wings of the foil.

Une batée peut être placée sur chaque aile pour soulager les contraintes sur le doigt dans une position prédéterminée. A pan can be placed on each wing to relieve stress on the finger in a predetermined position.

Figure 38 Les deux ailes du foa (1) sont montées sur le même axe approximetivenent horizontal. Figure 38 The two wings of the foa (1) are mounted on the same approximately horizontal axis.

Deux biellettes (4) montées à une de leur extréMité sur un axe solidaire du doigt de commande (2). A leur autre extrêmité, elles sont montées sur deux axes décentrés solidaires dc chaque aile. Le doigt coulisse dans un guide (3). Two rods (4) mounted at one of their ends on an axis secured to the control finger (2). At their other end, they are mounted on two off-center axes integral with each wing. The finger slides in a guide (3).

Le déplacement du doigt (2) vers le haut ou vers le bas, va ouvrir ou fermer les deux ailes du foïl. Moving the finger (2) up or down, will open or close the two wings of the foil.

VARIATION D'INCIDENCE DE L'ENSEMBLE POUR FAIRE VARIER LA PORTANCE. DU
FOIL.VARIATION IN THE INCIDENCE OF THE ASSEMBLY TO VARY THE LIFT. OF
FOIL.

Figure 4t Le guide (1) qui supporte & la fois le doigt de commande et li portée du (ou des) axe qui permet aux deux ailes de s'ouvrir, est lui-même pourvu de deux portées (3) qui lui permettent d'avoir un mouvement oscillant. Ce mouvement oscillant va faire varier en plus ou en moins, l'angle d'incidence du fofl par rapport au plan horizontal dans lequel il se déplace. Figure 4t The guide (1) which supports & both the control finger and the range of the axis (s) which allows the two wings to open, is itself provided with two ranges (3) which allow it to 'have an oscillating movement. This oscillating movement will vary more or less, the angle of incidence of the fofl relative to the horizontal plane in which it moves.

ELIMINATION DE LA TRAINEE DU SUPPORT DES FOILS DANS LE CAS D'UN FLOTTEUR
A PROPULSION VELIQUE EQUIPE D'UN PLAN ANTIDERIVE.ELIMINATION OF THE TRAIL OF THE HAIR SUPPORT IN THE CASE OF A FLOAT
WITH VELIC PROPULSION EQUIPPED WITH AN ANTIDEIVE PLAN.

Figure 5s Le foïl (3) et son système de commande d'ouverture ou de fermeture (2) est placé à l'extréMité du plan antidérive mobile ou fixe. Figure 5s The wire (3) and its opening or closing control system (2) is placed at the end of the mobile or fixed anti-drift plane.

- cas du plan fixe: le Zon se replie et rentre dans le plan antidérive, - cas du plan mobile: le foR se replie et l'ensemble plan antidérive (1)
et foïl entre dans le puits de dérive (4).- case of the fixed plane: the Zon folds back and enters the anti-drift plane, - case of the mobile plane: the foR folds up and the anti-drift plane assembly (1)
and foil enters the drift well (4).

Ce système évite d'introduire une tratnée supplèmentaire de au support du foïl qui contient le doigt de commande et son guide lequel support est alors placé entièrement dans le plan antidérive.  This system avoids introducing an additional tratnea to the support of the foil which contains the control finger and its guide which support is then placed entirely in the anti-drift plane.

Claims (5)

REVENDICATIONS 1/ Un profil hydroporteur (foïl) totalement immergé placé sous un flotteur ou & proximité de celui-ci qui s'excamote totalement par replie- ment et escamotage ver le haut par translation ou pivotement pour en annuler la tratnée propre aux vitesses de déplacement où cela s'avère nécessaire. 1 / A completely submerged hydro-carrier profile (foil) placed under or near a float which is completely retracted by folding and retracting upwards by translation or pivoting to cancel its own tratnea at travel speeds where this is necessary. 2/ Un profil hydroporteur (foïl) dont la surface projetée verticalement sur un plan horizontal est variable par en modifier la portance.  2 / A hydro-carrier profile (foil) whose surface projected vertically on a horizontal plane is variable by modifying its lift. 3/ Un profil hydroporteur (foïl) ayant une géométrie de fermeture et d'ouverture (dépliement et repliement) à partir d'un guide (support) de faible épaisseur pour en diminuer la traînée. Cette commande pouvant être actionnée par un vérin hydraulique cu mécanique ou tout autre dispositif adapté. 3 / A hydro-carrier profile (foil) having a closing and opening geometry (unfolding and folding) from a thin guide (support) to reduce its drag. This control can be actuated by a hydraulic cu mechanical cylinder or any other suitable device. 4/ Un profil hydroporteur (foïl) repliable sans escamotage vertical peur diminuer la traînée et la surface monillée. La surface mouillée étant approximativement divisée par deux, et la portance étant annulée, la traînée dûe à cette portance étant considérablement réduite lorsque les deux parties du foïl passent d'un plan approximativement horizontal à un plan approximativement vertical. 4 / A foldable hydro-carrier profile (foil) without vertical retraction to reduce the drag and the surface area. The wetted surface being approximately divided by two, and the lift being canceled, the drag due to this lift being considerably reduced when the two parts of the foil pass from an approximately horizontal plane to an approximately vertical plane. 5/ Un profil hydroporteur (foïl) placé à l'extrêmité d'un plan antidérive pour suppromer la traînée dûe au support de ce profil hydroperteur.  5 / A hydroportor profile (foil) placed at the end of an anti-drift plane to suppress the drag due to the support of this hydropertor profile.
FR8406119A 1984-04-18 1984-04-18 RETRACTABLE HYDROPORTER PROFILES AND ARTICLES FOR REDUCING THE TRAIL OF A FLOAT Expired - Lifetime FR2563177B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8406119A FR2563177B1 (en) 1984-04-18 1984-04-18 RETRACTABLE HYDROPORTER PROFILES AND ARTICLES FOR REDUCING THE TRAIL OF A FLOAT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8406119A FR2563177B1 (en) 1984-04-18 1984-04-18 RETRACTABLE HYDROPORTER PROFILES AND ARTICLES FOR REDUCING THE TRAIL OF A FLOAT

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FR2563177A1 true FR2563177A1 (en) 1985-10-25
FR2563177B1 FR2563177B1 (en) 1990-07-06

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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9418686U1 (en) * 1994-11-22 1995-01-26 Tz Tech Zentrum Entwicklungs & Finn especially for surfboards
WO1998007615A3 (en) * 1996-08-19 1998-07-30 Aldis Eglais Hydrofoil assisted trimaran
US5809926A (en) * 1995-07-12 1998-09-22 Kelsey; Kevin Lifting fin
US6019059A (en) * 1997-04-21 2000-02-01 Kelsey; Kevin R Overlap lifting fin
EP0901957A3 (en) * 1997-09-10 2000-08-16 INTERMARINE S.p.A. Fast multiple hull vessel with variable relative hull position
US6397771B1 (en) * 2000-06-26 2002-06-04 Clark Levi Retractable wing keel for sailboats
WO2004009435A1 (en) * 2002-07-16 2004-01-29 Josef Bergmeister Sailing ship, keel and sailing method
EP1464572A1 (en) * 2003-04-04 2004-10-06 Gianfranco Bianchi Finkeel for boats, with movable lee-boards
CN100439197C (en) * 2005-12-30 2008-12-03 上海长森船务有限公司 Large-tonnage Hai-river direct service ship
WO2009080259A2 (en) * 2007-12-21 2009-07-02 Paolo Chiaves Centreboard unit for a sail boat
GB2464768A (en) * 2008-10-31 2010-05-05 Gareth Roberts Boat with a pivoting hydrofoil arrangement
FR2940781A1 (en) * 2009-01-07 2010-07-09 Georges Cascarino Automatic heel correcting device for craft i.e. monohull sail boat, has connection units constituting torque reduction unit for reducing resistive torque between upper and lower ends, where connection units connect upper and lower ends
EP2580114A1 (en) * 2010-06-14 2013-04-17 Oliver Kormann Watercraft with at least one supporting surface
CN103935481A (en) * 2014-04-15 2014-07-23 大连理工大学 Variable attack angle type T-type wing
JP2014169045A (en) * 2013-03-05 2014-09-18 Kotaro Horiuchi Hydrofoil ship
WO2018229211A1 (en) * 2017-06-16 2018-12-20 Wavefoil As Retractable foil mechanism
WO2020046131A3 (en) * 2018-08-30 2020-04-09 Ronald Van Dijk Beheer B.V. A wall with a splittable and moveable construction, and a vessel comprising such a wall
CN115258107A (en) * 2022-07-21 2022-11-01 江苏科技大学 Folding T-shaped wing with wing body integrated with underwater glider and working method of folding T-shaped wing

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4164909A (en) * 1975-11-19 1979-08-21 Ballard James S Wind driven hydrofoil watercraft
DE2833783A1 (en) * 1978-08-02 1980-04-24 Zuehlke Ernst W Ing Grad Divided folding keel for sailing boat - gives servo driven splayed setting to sit boat upright on mud
GB1581627A (en) * 1977-03-22 1980-12-17 Walker J G Device to reduce the lowering and retraction resistance of hydrofoils
US4378748A (en) * 1982-01-18 1983-04-05 Joel Kurtz Sailboat keel apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4164909A (en) * 1975-11-19 1979-08-21 Ballard James S Wind driven hydrofoil watercraft
GB1581627A (en) * 1977-03-22 1980-12-17 Walker J G Device to reduce the lowering and retraction resistance of hydrofoils
DE2833783A1 (en) * 1978-08-02 1980-04-24 Zuehlke Ernst W Ing Grad Divided folding keel for sailing boat - gives servo driven splayed setting to sit boat upright on mud
US4378748A (en) * 1982-01-18 1983-04-05 Joel Kurtz Sailboat keel apparatus

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9418686U1 (en) * 1994-11-22 1995-01-26 Tz Tech Zentrum Entwicklungs & Finn especially for surfboards
US5809926A (en) * 1995-07-12 1998-09-22 Kelsey; Kevin Lifting fin
WO1998007615A3 (en) * 1996-08-19 1998-07-30 Aldis Eglais Hydrofoil assisted trimaran
US6024041A (en) * 1996-08-19 2000-02-15 Eglais; Aldis Hydrofoil assisted trimaran
US6019059A (en) * 1997-04-21 2000-02-01 Kelsey; Kevin R Overlap lifting fin
EP0901957A3 (en) * 1997-09-10 2000-08-16 INTERMARINE S.p.A. Fast multiple hull vessel with variable relative hull position
US6397771B1 (en) * 2000-06-26 2002-06-04 Clark Levi Retractable wing keel for sailboats
WO2004009435A1 (en) * 2002-07-16 2004-01-29 Josef Bergmeister Sailing ship, keel and sailing method
EP1464572A1 (en) * 2003-04-04 2004-10-06 Gianfranco Bianchi Finkeel for boats, with movable lee-boards
CN100439197C (en) * 2005-12-30 2008-12-03 上海长森船务有限公司 Large-tonnage Hai-river direct service ship
WO2009080259A2 (en) * 2007-12-21 2009-07-02 Paolo Chiaves Centreboard unit for a sail boat
WO2009080259A3 (en) * 2007-12-21 2010-10-28 Paolo Chiaves Centreboard unit for a sail boat
GB2464768A (en) * 2008-10-31 2010-05-05 Gareth Roberts Boat with a pivoting hydrofoil arrangement
FR2940781A1 (en) * 2009-01-07 2010-07-09 Georges Cascarino Automatic heel correcting device for craft i.e. monohull sail boat, has connection units constituting torque reduction unit for reducing resistive torque between upper and lower ends, where connection units connect upper and lower ends
EP2580114A1 (en) * 2010-06-14 2013-04-17 Oliver Kormann Watercraft with at least one supporting surface
US20140109820A1 (en) * 2010-06-14 2014-04-24 Oliver Kormann Watercraft with at least one supporting surface
JP2014169045A (en) * 2013-03-05 2014-09-18 Kotaro Horiuchi Hydrofoil ship
CN103935481A (en) * 2014-04-15 2014-07-23 大连理工大学 Variable attack angle type T-type wing
CN103935481B (en) * 2014-04-15 2016-07-06 大连理工大学 The variable T-shaped wing of angle of attack formula
WO2018229211A1 (en) * 2017-06-16 2018-12-20 Wavefoil As Retractable foil mechanism
CN110753657A (en) * 2017-06-16 2020-02-04 卫夫奥公司 Telescopic wing mechanism
US11014631B2 (en) * 2017-06-16 2021-05-25 Wavefoil As Retractable foil mechanism
WO2020046131A3 (en) * 2018-08-30 2020-04-09 Ronald Van Dijk Beheer B.V. A wall with a splittable and moveable construction, and a vessel comprising such a wall
CN115258107A (en) * 2022-07-21 2022-11-01 江苏科技大学 Folding T-shaped wing with wing body integrated with underwater glider and working method of folding T-shaped wing
CN115258107B (en) * 2022-07-21 2023-11-21 江苏科技大学 Folding T-shaped wing for wing body fusion underwater glider and working method thereof

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