EP4615747A1 - Embarcation - Google Patents
EmbarcationInfo
- Publication number
- EP4615747A1 EP4615747A1 EP23798957.9A EP23798957A EP4615747A1 EP 4615747 A1 EP4615747 A1 EP 4615747A1 EP 23798957 A EP23798957 A EP 23798957A EP 4615747 A1 EP4615747 A1 EP 4615747A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- corridor
- rail
- hull
- bow
- symmetrical
- 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.)
- Pending
Links
Classifications
-
- 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
- B63B1/18—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type
- B63B1/20—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type having more than one planing surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
- B63H5/14—Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in non-rotating ducts or rings, e.g. adjustable for steering purpose
-
- 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
- B63B1/18—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type
- B63B1/20—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type having more than one planing surface
- B63B2001/201—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type having more than one planing surface divided by longitudinal chines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H11/00—Marine propulsion by water jets
- B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
- B63H11/04—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps
- B63H11/08—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type
- B63H2011/081—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type with axial flow, i.e. the axis of rotation being parallel to the flow direction
Definitions
- the present invention relates to the field of boats. Its application is particularly advantageous in the field of hull design and in particular hull design with a view to optimizing the hydrodynamic performance of the hull.
- An object of the present invention is therefore to propose a boat making it possible to overcome at least partly the disadvantages mentioned.
- a boat comprising a hull comprising:
- the boat further comprising a propeller housed, at the level of the stern, in a housing centered on the longitudinal axis of the hull, the bow being followed towards the stern by a recessed area in the hull forming the housing and, between the bow and the housing, a water intake conduit towards the housing, the boat being characterized in that that the hull comprises recesses, extending in the direction of the longitudinal axis, respectively forming a first rail, a second rail, a first corridor and a second corridor, the second corridor being positioned between the first corridor and the the longitudinal axis, and the second rail and the first rail being respectively positioned between the first corridor and the second corridor and in contact with the first corridor opposite the second rail relative to the first corridor, the hull further comprising recesses, by extending in the direction of the longitudinal axis, respectively forming a first symmetrical rail, a second symmetrical rail
- the presence of recesses at the level of the hull makes it possible to create zones between the surface of the water and the hull in which a mixture of water and air has the role of creating cushioning when moving forward. of the boat resulting in an increase in comfort for users who will feel less shock, particularly when the boat enters the water.
- the mixture in question is due to the presence of a layer of air trapped between the surface of the water and the hull as well as that of waves on which the boat advances.
- these recesses due to the accumulation of the resulting air-water mixture, make it possible to limit the formation of water splashes upstream and downstream of the boat and on each side of the boat (this regardless of the condition of the surface of the water).
- the present invention also makes it possible to simplify the geometry as well as the driving of the boat, in particular by eliminating the need to position sponsons (on the jet ski in particular), fins (on surfing in particular), foils (especially when surfing, which required a significant height of water and could constitute a danger for swimmers and marine fauna) and anchors or to make adjustments (when driving).
- the configuration of the hull according to the invention allows scooters in particular to make tight turns and cause less drag (compared to what sponsons allow), therefore making the use of sponsons on scooters superfluous. .
- the corridors act as hull stiffeners, thus having the effect of simplifying the areas occupied by heavy elements such as the engine, the fuel tank or batteries.
- the screen protects the propeller from friction and pressure forces coming from below the propeller, which has the effect of optimizing the operation of the propeller and therefore creating better propulsion. All of these characteristics therefore make it possible to control, in a more important and simplified manner, the physical hydrodynamic phenomena so that they have less impact on the propulsion of the boat as well as the comfort of the users.
- the invention relates to a boat in which the first corridor and the second corridor are respectively with the first symmetrical corridor and the second symmetrical corridor, carried, respectively, by a first V and by a second V.
- the invention relates to a boat in which the first rail and the second rail form circular arcs and the first corridor and the second corridor form flat surfaces.
- Figure 1 represents electric surfing from a view facing the stern.
- Figure 2 represents a cross section of the electric surfboard hull highlighting the shapes and inclinations of the corridors and rails.
- the water intake conduit 7 has a rectilinear shape and the bow 4 forms with the water intake conduit 7 an angle less than or equal to 20° and preferably greater than or equal to 5° .
- the rectilinear shape of the water inlet conduit 7 makes it possible to constitute a progressive flow zone of the water having an inclination substantially parallel to the directions of the flow of the water subject to reaching the inlet conduit of water 7.
- This configuration makes it possible to reduce obstacles to the passage of water and therefore friction, which results in a limitation of the expenditure of energy to move forward.
- this inclination has the function of limiting the pressure and friction forces acting on the areas located between the screen 9 and the bow 4.
- the screen 9 presents, at the level of the water intake mouth 16a, a concavity oriented towards the bow 4.
- This concavity makes it possible to limit the pressure force of the water acting on the surface of the screen 9 presenting the concavity. Indeed, thanks to the concavity, the pressure applied will be distributed over the concave surface so that the same pressure is applied over a longer time than if the screen 9 did not present this concave surface, this resulting from a pressure felt per lesser unit of time.
- the screen 9 is joined to the hull 3, by a third rail 18a and by a third symmetrical rail 18b, extending in the direction of the longitudinal axis 6, of the water outlet mouth 16b at bow 4.
- the boat comprises a motor and the propeller 5 is connected to the motor by a shaft 17, the motor being positioned, in contact with a part of the hull 0 not exposed to water, at the level of the junction between the bow 4 and the water intake conduit 7.
- the bow 2 has a hollow zone 19 at the level of the hull 3. This configuration makes it possible to form a water blocking zone to limit the rise of water which could have reached with significant pressure the top of the the bow 2.
- the rising water in question has the effect of slowing down the boat for the same power generated.
- the first corridor 12a and the second corridor 13a have a width, defined at the water inlet mouth 16a in a direction orthogonal to the direction along the longitudinal axis 6, having a value greater than twice a width, defined at the water inlet mouth 16a in a direction orthogonal to the direction along the longitudinal axis 6, of the first rail 10a and the second rail 11a and preferably, having a value less than ten times the width of the first rail 10a and the second rail 11a and preferably the width of the second corridor 13a is greater than that of the first corridor 12a.
- the relative choice of the width of the corridors compared to that of the rails has an influence on the stability of the hull. Indeed, a small width of corridors leads, for the same width of hull, to rails having a greater radius, which accentuates the stability due to the V shape of the hull, by creating larger hollows in the hull. .
- the width of the second corridor 13a is greater than that of the first corridor 12a makes it possible to create accumulation zones of the air-water mixture close to the hull exposed to the air, which makes it possible to channel a maximum of this mixture before it creates friction forces on the hull.
- the second corridor 13a has a depth less than 8 cm and preferably greater than 0 cm and in which the first corridor 12a has a depth less than 8 cm and preferably greater than 0 cm.
- the overall angle is formed by the line joining the first rail 10a and the screen 9 with the line joining the first symmetrical rail 10b and the screen 9.
- the boat developed due to the characteristics that limit friction, makes it possible to obtain a propulsion system that limits the power generated.
- the expression “carried by a V” relating to two planes means that the two planes are intersecting and that their intersection forms an angle different from 180° and 0°.
- boat designates a sailing, rowing or motor boat of the “electric surf” type, jet-ski, boat, pleasure boat or fire boat or for fishing.
- the term “bow” designates the projecting part forming at least partly the bow of a boat.
- the bow extends along the lowest part of the hull towards the stern.
- the bow may have a V shape carried by an angle which may in particular be less than 140°.
- the term "low” must be taken into account by considering the usual direction of use of a water craft, the bottom being opposite the top.
- the boat comprises a hull 0 comprising a stern 1, a bow 2, and a hull 3.
- the hull 3 has a bow 4 which extends along a longitudinal axis 6 of the hull 3 being positioned between the bow 2 and the stern 1.
- the boat further comprises a propeller 5 inserted, at the level of the stern 1, in a housing 8 positioned in the center of the longitudinal axis 6 of the hull 3.
- the bow 4 is followed towards the stern 1 by a recessed area in the hull 3 forming the housing 8 and, between the bow 4 and the housing 8 , a water intake conduit 7 towards housing 8.
- the hull 3 comprises recesses 14a, 14b, 14c, 14d, extending in the direction of the longitudinal axis 6, respectively forming a first rail 10a, a second rail 11a, a first corridor 12a and a second corridor 13a .
- the second corridor 13a is linked to the first corridor 12a and to the longitudinal axis 6.
- the second rail 11a is linked to the first corridor 12a and to the second corridor 13a.
- the first rail 10a is linked to the first corridor 12a opposite the second rail 11a with respect to the first corridor 12a.
- the hull 3 further comprises recesses 14e, 14f, 14g, 14h, extending in the direction of the longitudinal axis 6, respectively forming a first symmetrical rail 10b, a second symmetrical rail 11b, a first symmetrical corridor 12b and a second symmetrical corridor 13b.
- the first symmetrical rail 10b, the second symmetrical rail 11b, the first symmetrical corridor 12b and the second symmetrical corridor 13b being respectively symmetrical with respect to a plane, passing through the longitudinal axis 6, separating the hull 3 into two equal parts, of the first rail 10a, of the second rail 11a, of the first corridor 12a and of the second corridor 13a.
- the hull 3 comprises a screen 9 enclosing the housing 8, on one side, between a water inlet mouth 16a into the housing 8 from the water inlet conduit 7 and a water outlet mouth 16b outside of housing 8.
- propeller 5 in housing 8 allows the boat to be used as a rescue boat that can navigate in shallow waters, unlike current boats used by firefighters during floods.
- the size of the screen 9 can be set to create a gap between the propeller 5 and the screen of 1 mm.
- the length of the water intake conduit 7 can be between 20% to 35% of the total length of the boat.
- the propeller 5 can be a specific propeller (but different from a turbine propeller which operates with a compression cone) which can operate while being housed in a hollow space of cylindrical shape. Its flow must be straightened by a flow rectifier.
- the inlet of the water intake conduit 7 may be equipped with a grid to prevent various objects from passing through the water intake conduit 7 to reach the propeller 5.
- the recesses 14a, 14b, 14c, 14d, 14e, 14f, 14g, 14h are separated from each other by a border having a width of at least 2 mm (for example 7 mm).
- the first rail 10a and the second rail 11a define a rounded contour corresponding to arcs of a circle.
- This rounded contour can be configured so that the hollow zone defined by this contour is in contact with the water.
- the first rail 10a and the second rail 11a each define a rounded (or convex) contour forming an arcuate concavity.
- element forming a concavity is meant an element having a convex or rounded shape towards the inside.
- the first rail 10a and the second rail 11a can describe quarter circles with a variation of 20% to 60% of the length of the bow.
- the first corridor 12a and the second corridor 13a describe flattened surfaces.
- the water intake conduit 7 has an elongated shape extending along the longitudinal axis 6.
- the bow 4 is oriented relative to the water intake conduit 7 so that the bow 4 and the water intake conduit 7 form an angle less than or equal to 20° and preferably greater than or equal to 5°.
- the screen 9 projects relative to the bow 4.
- the screen 9 protrudes relative to the bow 4 by a value less than or equal to 10 cm and preferably greater than or equal to 3 cm.
- the screen 9 is flat.
- the second part 9b has, at the level of the water intake mouth 16a, a concavity oriented towards the bow 4.
- the screen 9 is secured to the hull 3, by a third rail 18a and by a third symmetrical rail 18b, extending in the direction of the longitudinal axis 6, of the outlet mouth of water 16b at the bow 4.
- the propeller 5 is secured to a motor by a shaft 17.
- the motor is located, in a space formed by a part of the hull 0 not exposed to water, at the junction between the bow 4 and the water intake conduit 7.
- the water flow is oriented substantially in the same direction as the shaft 17, this in order to allow optimal operation of the propeller 5 due to the orientation of its blades.
- the motor can be an electric motor and can be supplied with energy by an electric battery equipped with a variator allowing the power of the motor and the direction of rotation to be varied.
- the propulsion system of the boat may be a hydrojet system.
- the electric motor has the advantage of limiting starting problems.
- the propulsion system allows the boat to circulate in very little water and to perform automatic and secure forward and reverse movements.
- the electric motor can turn in both directions to simplify maneuvering.
- the motor can operate at a power of 10 KW or more (for example 120 KW) so that the boat reaches a speed of 20 km/h or more (for example 70 km/h) with a autonomy of approximately 2 hours , and this in forward and reverse.
- the shaft can consist of a system passing through the hull in a sealed manner and allowing its rotation.
- the boat may include at the exit of the propulsion tube, that is to say at the level of the stern, a system for steering the boat, such as a rudder or a steerable tube positioned behind the propeller 5 so as to direct the flow of water (in this case, straightening the flow is not necessary).
- a system for steering the boat such as a rudder or a steerable tube positioned behind the propeller 5 so as to direct the flow of water (in this case, straightening the flow is not necessary).
- the bow 2 has a hollow zone 19 at the level of the hull 3.
- the hollow zone 19 can have a depth of 3 to 8 cm, the depth being defined in one direction along the longitudinal axis 6.
- the boat can include a towing ring 20.
- the first corridor 12a and the second corridor 13a have a width, defined at the level of the water inlet mouth 16a in a direction orthogonal to the direction along the longitudinal axis 6, having a value greater than twice a width, defined at the water inlet mouth 16a in a direction orthogonal to the direction along the longitudinal axis 6, of the first rail 10a and the second rail 11a.
- the width of the first corridor 12a and the second corridor 13a is less than ten times the width of the first rail 10a and the second rail 11a.
- the second corridor 13a is wider than the first corridor 12a.
- the width of the second symmetrical rail 11 b and the second rail 11 a decreases as it approaches the bow 2.
- the second symmetrical rail 1 1 b and the second rail 11 a extend along the longitudinal axis 6 to a point located at a distance between 20 cm and 35 cm from the bow 2.
- the first corridor 12a and the first symmetrical corridor 12b have a width which decreases as it approaches the bow 2 following the curvature of the hull 0 at the level of the bow 2.
- the second corridor 13a and the second symmetrical corridor 13b have a constant width from the stern 1 to the bow 2.
- the first rail 10a and the first symmetrical rail 10b have a width which decreases as they approach the bow 2 following the curvature of the hull 0 at the level of the bow 2.
- the first rail 10a and the first symmetrical rail 10b start at a distance between 60 cm and 120 cm from the bow.
- the first rail 10a and the first symmetrical rail 10b have a depth which increases from the bow 2 to the stern 1 and which is between 0 and 8 cm.
- the total width of this boat can be between 60 cm and 75 cm. Its length can be between 150 cm and 300 cm. Its thickness at the front can be between 5 cm and 15 cm and at the back between 15 cm and 30 cm.
- the total width of this boat can be between 90 cm and 130 cm.
- the width between the second rail 11a and the second symmetrical rail 11b can be between 40 cm and 60 cm.
- the width of the screen 9 can be between 15 cm and 40 cm, in particular to ensure the modification of the orientation of the water flow.
- the boat may include a removable tow bar.
- the boat can also include wheels, with a diameter of 40 to 60 cm, allowing movement at a wide range of speeds, so as to reduce the time of access and launching of the boat and in particular in situations of great emergency. These wheels can be retractable when entering the water.
- the shell 0 can have hollowed out areas allowing the wheels to be hidden.
- the bars connecting the wheels can be equipped with a spring shock absorber system.
- the boat may also include road traffic lights. This type of configuration can also consist of a fishing boat, equipped accordingly, so as to avoid towing problems in particular.
- the rescue boat may have a length of between 300 cm and 500 cm and a width of between 150 cm and 250 cm with a freeboard of 45 to 70 cm.
- the boat may include a traction bar, for towing, connected to the hull 0 by a pin that can be removed.
- the shell material can be composite or polymers.
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2211710A FR3141925A1 (fr) | 2022-11-10 | 2022-11-10 | Embarcation |
| PCT/EP2023/080543 WO2024099864A1 (fr) | 2022-11-10 | 2023-11-02 | Embarcation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4615747A1 true EP4615747A1 (fr) | 2025-09-17 |
Family
ID=85122019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23798957.9A Pending EP4615747A1 (fr) | 2022-11-10 | 2023-11-02 | Embarcation |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4615747A1 (fr) |
| FR (1) | FR3141925A1 (fr) |
| WO (1) | WO2024099864A1 (fr) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4584959A (en) * | 1984-05-25 | 1986-04-29 | Allison Darris E | Planing boat hull |
| FR2664229B1 (fr) * | 1990-07-06 | 1995-07-07 | Zodiac Int | Embarcation, notamment a propulsion par jet d'eau, equipee d'une carene rigide profilee a l'arriere. |
| US6168481B1 (en) * | 1998-08-20 | 2001-01-02 | Golden Mardikian Llc | Jet boat with improved hull design and engine placement |
| US6213824B1 (en) * | 2000-02-11 | 2001-04-10 | Power Vent Technologies, Inc. | Method for reducing vessel draft |
| TW200844002A (en) | 2007-05-09 | 2008-11-16 | Solas Science & Engineering Co Ltd | Propulsion system for a powered boat |
-
2022
- 2022-11-10 FR FR2211710A patent/FR3141925A1/fr not_active Withdrawn
-
2023
- 2023-11-02 EP EP23798957.9A patent/EP4615747A1/fr active Pending
- 2023-11-02 WO PCT/EP2023/080543 patent/WO2024099864A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| FR3141925A1 (fr) | 2024-05-17 |
| WO2024099864A1 (fr) | 2024-05-16 |
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Legal Events
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 17P | Request for examination filed |
Effective date: 20250505 |
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| AK | Designated contracting states |
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| DAX | Request for extension of the european patent (deleted) | ||
| R17P | Request for examination filed (corrected) |
Effective date: 20250605 |