EP3475164B1 - Segelantriebselement mit einem aufblasbaren segel mit einem symmetrischen profil - Google Patents

Segelantriebselement mit einem aufblasbaren segel mit einem symmetrischen profil Download PDF

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Publication number
EP3475164B1
EP3475164B1 EP17743078.2A EP17743078A EP3475164B1 EP 3475164 B1 EP3475164 B1 EP 3475164B1 EP 17743078 A EP17743078 A EP 17743078A EP 3475164 B1 EP3475164 B1 EP 3475164B1
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EP
European Patent Office
Prior art keywords
sail
cavity
mast
inflatable
profile
Prior art date
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Active
Application number
EP17743078.2A
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English (en)
French (fr)
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EP3475164A1 (de
Inventor
Laurent De Kalbermatten
Edouard Kessi
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Next Technologies Sarl
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Individual
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Classifications

    • 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
    • B63H9/08—Connections of sails to masts, spars, or the like
    • 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
    • B63H9/061—Rigid sails; Aerofoil sails
    • B63H9/0615—Inflatable aerofoil sails

Definitions

  • the present invention lies in the field of velic propulsion.
  • an inflatable boat comprising a self-supporting inflatable sail made of flexible plastic material.
  • the sail comprises a first outer shell having, when inflated, the shape of a geometric solid of substantially constant cross section.
  • FR 2 432 431 A1 describes a device for propelling, by the force of the wind, boats of all sizes or land vehicles comprising at least one wing in inflatable structure.
  • Publication No. FR 1 464 877 A describes a vehicle propelled by natural wind comprising a canopy inflated by the total pressure of the relative wind thanks to an air sock placed at the top of the mast.
  • the inflatable sails of the state of the art have several drawbacks.
  • the canopy is only inflated initially. In this configuration, it is not possible to compensate for any air leaks inside the sail.
  • the sail is passively inflated, by continuously introducing air (wind) into the sail.
  • this configuration has the drawback of not having a sufficiently inflated sail at the start, especially when the wind is weak, or even nonexistent.
  • the velic propulsion element according to the present invention overcomes the aforementioned problems.
  • It comprises an inflatable sail consisting essentially of two adjacent surfaces which are substantially sealed and interconnected around their periphery, thereby forming at least one cavity between them; the element further comprising a duct disposed between the interior and the exterior of the cavity and means for injecting air into the latter; the element characterized by the fact that the sail, once inflated, has a profile which remains permanently symmetrical, regardless of the displacement of the element, the direction or the intensity of the wind.
  • the element also comprises means for withdrawing air from the cavity, thus making it possible to regulate the pressure inside the latter.
  • These means also make it possible to empty the air which is in the cavity, prior to stowing the sail or if it is desired to reduce the surface of the sail.
  • the surfaces are rigid.
  • the air injection means (eg a turbine) operate continuously, so as to continuously inject an air flow through at least one orifice between the 2 adjacent surfaces in order to separate them from the one from the other by inflation and to put them in tension between multiple transverse connecting elements giving the airfoil once inflated its final plan shape with in its thickness the shape of a supporting aerodynamic profile.
  • the pressure managed by the air injection means can be very low, typically a few 100 Pa. It therefore requires very little energy to operate.
  • the profile thus obtained is substantially symmetrical, which allows the airfoil to operate indifferently in both directions of advance with respect to the wind.
  • the pressure generated by the air injection means can be regulated so as to always be sufficient for the airfoil to acquire and maintain its shape in plan and in thickness in no wind and / or strong and turbulent.
  • the invention also relates to a velic propulsion vehicle, eg a sailboat, comprising a base and one or more velic propulsion elements as described above.
  • a velic propulsion vehicle eg a sailboat
  • Each element of velic propulsion is associated with a mast which passes through the cavity of the element.
  • aerodynamic forces produced by the air flow around the profile are taken up along the rig, at a place located at the level of the transverse elements, not on the front of the profile, but substantially at the center of thrust. aerodynamic which is located on the axis of symmetry of the profile, substantially towards 25% of its front end, thus giving the airfoil a substantially neutral behavior at all operating speeds.
  • the sail is flexible, but it can also be rigid, as indicated above.
  • any air injection system suitable for the intended use can be used. It may, for example, be a turbine powered by a battery.
  • the mast can retract along its length (telescopic mast), which allows the vehicle to cross obstacles such as bridges or reduce the surface area in strong winds.
  • FIG. 1 shows a sailboat 1 mainly comprising a hull 3, a mast 4 and a sail 2 made up of a plurality of cells 5 interconnected by orifices (not shown), the set of cells 5 forming a single cavity 8.
  • a partial boom 12 connects the mast 4 to the sail 2. Its dimensions are small and it is not necessary for it to be rigid because, unlike the booms of the state of the art which also serve to tension the sail, its The only function is to make it easier to rotate the sail 2 around the mast 4. In fact, in the context of the present invention, it is not necessary to provide the sailboat with a boom (partial or normal).
  • the sail 2 is permanently inflated by means of a turbine 6 placed in the lower part of the sail 2.
  • a duct 11 connects the turbine with the interior of the cavity 8.
  • the figure 2 represents the sailboat of the figure 1 but with sail 2 deflated. This configuration is obtained after stopping the turbine 6. The deflation can be accentuated if the operation of the turbine is reversed to induce a vacuum inside the cavity 8.
  • the figure 3 represents a front view of the sailboat from the figure 1 .
  • the figure 4 particularly emphasizes the symmetry of the profile of the sail 2.
  • the wind is behind the hull.
  • the sail 2 is oriented so as to benefit from a pushing force.
  • Sail 2 shown on figure 7 to a reduced surface. More precisely, its lower part is deflated.
  • the length of the mast 4 can be fixed or variable. It can, for example, be reduced by means of a telescopic mast.
  • the sail in all the aforementioned positions, the sail always has a symmetrical profile. This configuration offers in particular the advantage of reducing the energy to be expended to maintain the sail in the desired orientation.
  • the pressure inside the cavity can be continuously regulated.
  • the sail By increasing it, the sail is tighter and stronger. This configuration can be very useful during strong swell movements or controlling the twist of the sail. By reducing it, the volume of the cavity and the surface of the sail can be reduced.
  • the air inlet can be located anywhere, eg through the mast when the latter passes through the cavity. In this case, the filling and emptying are carried out through the mast.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Wind Motors (AREA)

Claims (5)

  1. Segelantriebselement mit einem aufblasbaren Segel (2), das im Wesentlichen aus zwei benachbarten Flächen (9, 10) gebildet ist, die im Wesentlichen dicht und um ihren Umfang miteinander verbunden sind, so dass sie zwischen sich mindestens einen geschlossenen Hohlraum (8) bilden; wobei das Element ferner einen zwischen dem Inneren und dem Äußeren des Hohlraums (8) angeordneten Kanal (11) und Mittel (6) zum kontinuierlichen Injizieren von Luft in den Hohlraum (8) umfasst;
    so dass das Segel (2) nach dem Aufblasen ein Profil aufweist, das unabhängig von der Bewegung des Elements, der Richtung oder der Windstärke stets symmetrisch bleibt.
  2. Element nach Anspruch 1, das Mittel zum Abziehen von Luft aus dem Hohlraum (8) umfasst.
  3. Element nach Anspruch 1 oder 2, wobei die benachbarten Flächen (9, 10) starr sind.
  4. Fahrzeug (1) mit Segelantrieb, das ein Element nach einem der vorhergehenden Ansprüche, eine Basis (3) und einen fest mit der Basis (3) verbundenen Mast (4) umfasst, dadurch gekennzeichnet, dass der Mast (4) in dem Hohlraum (4) angeordnet ist.
  5. Fahrzeug (1) mit Segelantrieb nach Anspruch 4, wobei sich der Mast (4) bei ca. 25% von seinem Vorderende auf der Symmetrieachse des Profils (7) befindet.
EP17743078.2A 2016-06-22 2017-06-16 Segelantriebselement mit einem aufblasbaren segel mit einem symmetrischen profil Active EP3475164B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IB2016053713 2016-06-22
PCT/IB2017/053588 WO2017221117A1 (fr) 2016-06-22 2017-06-16 Element de propulsion velique comprenant une voile gonflable a profil symetrique

Publications (2)

Publication Number Publication Date
EP3475164A1 EP3475164A1 (de) 2019-05-01
EP3475164B1 true EP3475164B1 (de) 2021-06-02

Family

ID=59388108

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17743078.2A Active EP3475164B1 (de) 2016-06-22 2017-06-16 Segelantriebselement mit einem aufblasbaren segel mit einem symmetrischen profil

Country Status (4)

Country Link
EP (1) EP3475164B1 (de)
DK (1) DK3475164T3 (de)
ES (1) ES2885864T3 (de)
WO (1) WO2017221117A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3123310A1 (fr) 2021-05-28 2022-12-02 Compagnie Generale Des Etablissements Michelin Elément de propulsion vélique, Véhicule à propulsion vélique
FR3123308A1 (fr) 2021-05-28 2022-12-02 Compagnie Generale Des Etablissements Michelin Elément de propulsion vélique, Véhicule à propulsion vélique
FR3123307A1 (fr) 2021-05-28 2022-12-02 Compagnie Generale Des Etablissements Michelin Véhicule à propulsion vélique
FR3123309A1 (fr) 2021-05-28 2022-12-02 Compagnie Generale Des Etablissements Michelin Elément de propulsion vélique, Véhicule à propulsion vélique
FR3136446A1 (fr) 2022-06-14 2023-12-15 Hugues De Turckheim Navire porte-conteneurs équipé d’un système de transbordement
BE1031105A1 (fr) 2022-12-05 2024-06-27 Antoine Rubbers Voile gonflable rigide

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE463701C (de) * 1928-08-02 Otto Freistadt Profilsegel
FR1464877A (fr) * 1965-11-23 1967-01-06 Conservatoire Nat Arts Perfectionnements apportés aux véhicules propulsés par le vent naturel
FR2432431A1 (fr) * 1978-08-02 1980-02-29 Soulie Wanceslas Systeme de voilure gonflable pour la propulsion par la force du vent
US5671690A (en) 1995-12-08 1997-09-30 Trost; Michael D. Variable camber inflatable airfoil
US5775249A (en) 1996-04-08 1998-07-07 Samuel; David B. Adjustable camber inflatable sail
ITVI960109A1 (it) * 1996-07-01 1998-01-01 Francesco Miotto Natante pneumatico per lo sport ed il tempo libero.
US5931109A (en) 1997-06-17 1999-08-03 Altosail Limited Sail
ITTO20040102A1 (it) * 2004-02-20 2004-05-20 Navis S R L Impianto velico perfezionato
ES2311399B1 (es) 2007-04-27 2009-12-04 Ignacio Bermudez Sanchez Vela rigida de perfil configurable.
FR3008381A1 (fr) 2013-07-12 2015-01-16 Jean Luc Hauser Profil aerodynamique gonflable, pour tout dispositif a portance ou propulsion velique

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3475164A1 (de) 2019-05-01
WO2017221117A1 (fr) 2017-12-28
DK3475164T3 (da) 2021-08-30
ES2885864T3 (es) 2021-12-15

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