EP3475164A1 - Element de propulsion velique comprenant une voile gonflable a profil symetrique - Google Patents
Element de propulsion velique comprenant une voile gonflable a profil symetriqueInfo
- Publication number
- EP3475164A1 EP3475164A1 EP17743078.2A EP17743078A EP3475164A1 EP 3475164 A1 EP3475164 A1 EP 3475164A1 EP 17743078 A EP17743078 A EP 17743078A EP 3475164 A1 EP3475164 A1 EP 3475164A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sail
- cavity
- mast
- profile
- inflatable
- 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.)
- Granted
Links
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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 is in the field of vane propulsion.
- Inflatable sails of the state of the art have several disadvantages.
- the sail is only inflated initially. In this configuration it is not possible to compensate for any air leaks inside the sail.
- the sail is inflated passively, by introducing air (wind) permanently in the sail. This configuration, however, has the disadvantage of not having initially a sufficiently inflated sail, especially when the wind is weak or nonexistent.
- the vane propulsion element according to the present invention overcomes the aforementioned problems.
- the element comprises an inflatable sail consisting essentially of two adjacent surfaces substantially sealed and interconnected on their periphery, forming in this way at least one cavity; the element further comprising a conduit disposed between the interior and exterior of the cavity and means for injecting air therein; the element being characterized in that the sail, once inflated, has a profile that remains permanently symmetrical, regardless of the displacement of the element, the direction or 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 cavity. These means also make it possible to empty the air which is in the cavity, prior to the storage of 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 a flow of air through at least one orifice between the two adjacent surfaces in order to move away from one another by inflation and put them in tension between multiple transverse connecting elements giving the wing once inflated its final plane shape with in its thickness the shape of a carrier aerodynamic profile.
- the pressure managed by the air injection means can be very low, typically of a few 100 Pa. It therefore requires very little energy to operate.
- the profile thus obtained is substantially symmetrical, which allows the wing to operate indifferently in both directions of advancement with respect to the wind.
- the pressure generated by the air injection means can be regulated so as to be always sufficient for the wing to acquire and maintain its shape in plan and in thickness in zero wind and or strong and turbulent.
- the invention also relates to a vane propulsion vehicle, e.g. ex. a sailboat, comprising a base and one or more propulsion propulsion elements as described above.
- a vane propulsion vehicle e.g. ex. a sailboat
- Each vane propulsion element is associated with a mast which passes through the cavity of the element.
- the aerodynamic forces produced by the flow of air around the profile are resumed along the rigging, at a location at the level of the transverse elements, not on the front of the profile, but substantially in the center of thrust aerodynamic which is located on the axis of symmetry of the profile, substantially to 25% of its front end, thus giving the wing 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 purpose can be used. He can p. ex. 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 sail area in strong wind.
- Figure 1 shows a vane propulsion element according to the invention, in the operating position.
- Figure 2 shows the element of Figure 1, but in the rest position.
- Figure 3 shows a front view of the element of Figure 1.
- Figure 4 shows a top view of the element of Figure 1.
- Figures 5A to 5D show different operating situations with respect to wind direction.
- Figure 6 illustrates a distribution of the resulting forces acting on the sail for a given wind angle which corresponds to the position of Figure 5B
- Figure 7 shows a vane propulsion element according to the invention, with a reduced surface.
- FIG. 1 represents a sailboat 1 mainly comprising a hull 3, a mast 4 and a sail 2 consisting 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 that it is rigid because unlike the terminals of the state of the art which are also used to put the sail in tension, its only function is to make easier the rotation of the sail 2 around the mast 4. In fact, in the context of the present invention, it is not necessary to equip the boat with a boom ( partial or normal).
- the sail 2 is preferably permanently inflated by means of a turbine 6 disposed in the lower part of the sail 2.
- a duct 1 1 connects the turbine with the interior of the cavity 8.
- Figure 2 shows the sailboat of Figure 1 but with the sail 2 deflated. This configuration is obtained following the stopping of the turbine 6. The deflation can be accentuated if the operation of the turbine is reversed to induce a vacuum inside the cavity 8.
- FIG. 3 represents a front view of the sailboat of FIG. 1.
- FIG. 5 the direction of the wind is represented by an arrow.
- FIG. 5A the wind is in front, with respect to the hull and the sail, the boat is stopped.
- FIG 5 D the wind is back from the hull.
- the sail 2 is oriented so as to benefit from a thrust force.
- the sail 2 illustrated in Figure 7 to a reduced area. More precisely, its lower part is deflated.
- the length of the mast 4 can be fixed or variable. She can p. ex. be reduced by means of a telescopic mast.
- the sail in all the aforementioned positions, the sail always has a symmetrical profile. This configuration has the particular advantage of reducing the energy to spend to maintain the sail in the desired orientation.
- the pressure inside the cavity can be regulated continuously.
- the sail By increasing it, the sail is more tense and solid. This configuration can be very useful during strong wave movements or control of the sail's twist. By decreasing it, the volume of the cavity and the surface of the sail can be reduced.
- the air inlet can be located in any place, p. ex. through the mast when the latter passes through the cavity. In this case, filling and emptying are done 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)
Abstract
Description
Claims
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 true EP3475164A1 (fr) | 2019-05-01 |
EP3475164B1 EP3475164B1 (fr) | 2021-06-02 |
Family
ID=59388108
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17743078.2A Active EP3475164B1 (fr) | 2016-06-22 | 2017-06-16 | Element de propulsion velique comprenant une voile gonflable a profil symetrique |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3475164B1 (fr) |
DK (1) | DK3475164T3 (fr) |
ES (1) | ES2885864T3 (fr) |
WO (1) | WO2017221117A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3136446A1 (fr) | 2022-06-14 | 2023-12-15 | Hugues De Turckheim | Navire porte-conteneurs équipé d’un système de transbordement |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
FR3123310A1 (fr) | 2021-05-28 | 2022-12-02 | Compagnie Generale Des Etablissements Michelin | Elément de propulsion vélique, Véhicule à propulsion vélique |
BE1031105B1 (fr) | 2022-12-05 | 2024-07-01 | Antoine Rubbers | Voile gonflable rigide |
Family Cites Families (10)
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 |
-
2017
- 2017-06-16 EP EP17743078.2A patent/EP3475164B1/fr active Active
- 2017-06-16 WO PCT/IB2017/053588 patent/WO2017221117A1/fr unknown
- 2017-06-16 DK DK17743078.2T patent/DK3475164T3/da active
- 2017-06-16 ES ES17743078T patent/ES2885864T3/es active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3136446A1 (fr) | 2022-06-14 | 2023-12-15 | Hugues De Turckheim | Navire porte-conteneurs équipé d’un système de transbordement |
WO2023242513A1 (fr) | 2022-06-14 | 2023-12-21 | MARCOVICH, Philippe | Navire porte-conteneurs équipé d'un système de transbordement |
Also Published As
Publication number | Publication date |
---|---|
DK3475164T3 (da) | 2021-08-30 |
WO2017221117A1 (fr) | 2017-12-28 |
EP3475164B1 (fr) | 2021-06-02 |
ES2885864T3 (es) | 2021-12-15 |
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