WO2013014232A1 - Procédé d'entraînement et de guidage pour propulsion marine comportant des ailettes sur un trajet sans fin - Google Patents

Procédé d'entraînement et de guidage pour propulsion marine comportant des ailettes sur un trajet sans fin Download PDF

Info

Publication number
WO2013014232A1
WO2013014232A1 PCT/EP2012/064693 EP2012064693W WO2013014232A1 WO 2013014232 A1 WO2013014232 A1 WO 2013014232A1 EP 2012064693 W EP2012064693 W EP 2012064693W WO 2013014232 A1 WO2013014232 A1 WO 2013014232A1
Authority
WO
WIPO (PCT)
Prior art keywords
endless
chain
path
segments
propulsive
Prior art date
Application number
PCT/EP2012/064693
Other languages
English (en)
Inventor
Jacob Govert Vermeiden
Original Assignee
A.P. Møller-Mærsk A/S
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 A.P. Møller-Mærsk A/S filed Critical A.P. Møller-Mærsk A/S
Publication of WO2013014232A1 publication Critical patent/WO2013014232A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/30—Propulsive elements directly acting on water of non-rotary type
    • B63H1/34—Propulsive elements directly acting on water of non-rotary type of endless-track type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/30—Propulsive elements directly acting on water of non-rotary type
    • B63H1/34—Propulsive elements directly acting on water of non-rotary type of endless-track type
    • B63H2001/348—Propulsive elements directly acting on water of non-rotary type of endless-track type with tracks oriented transverse to propulsive direction

Definitions

  • the present invention relates to a propulsion system for a marine vessel wherein the employed means for propulsion include rotatable fins with their axis held substantially normal to the hull surface, and wherein those fins translate in a mostly submerged, not purely circular, endless path along the surface of the hull.
  • the employed means for propulsion include rotatable fins with their axis held substantially normal to the hull surface, and wherein those fins translate in a mostly submerged, not purely circular, endless path along the surface of the hull.
  • a significant part of the path lies substantially perpendicular to the direction of the flow of water that surrounds the vessel, and the rotation axes of the fins are also substantially perpendicular to the endless path.
  • the propulsion system to could resemble a large, actuated, transversal, endless chain held flush with the hull across a barge stern, chain-wheels laying flat and flush with the hull, with fins articulated on the hinges of the chain segments; the atwartships movement of the fins held at the proper rotation angle creates the propulsive force, with one row of fins moving to port, and one row of fins moving to starboard.
  • the invention relates to a maritime vessel comprising a hull having an opening though which a propulsion system extends at least partially.
  • the propulsive system may include at least one set of linked elements in the form of an endless chain.
  • This endless chain may be guided in the hull along an endless path comprising at least two substantially straight atwartships parts and at least two curved parts connecting the said straight parts of the path in order to form an endless path.
  • the endless chain may be driven on the straight parts of the path by electromagnetic or mechanical means.
  • the guides of the endless chain on the curved parts of the endless path may translate substantially atwartships to accommodate any unavoidable and minute changes in chain length caused either by chain segments transitioning from the straight parts of the path to the curved parts of the path, or by elasticity, or by thermal expansion, or by wear.
  • propulsive means such as fins or foils are driven smoothly substantially from port to starboard and substantially from starboard to port over a part of the width of the ship in two longitudinally spaced apart rows, with their rotation axis substantially perpendicular to one or both of the hull surface and/or the flow direction, and where propulsive forces occur due to a proper rotation angle of the propulsive means along the cycle, and where all parts except the propulsive means are present in the hull without adding any bulges that would affect the flow and would cause increased hull drag.
  • the boundary layer of a ship constitutes a layer of water of increasing speed when nearing the hull as seen from an observer immobile in the water, and that the thickness of that boundary layer increases from the fore-sections towards the aft-sections of the ship.
  • an optimal marine propulsor makes maximum use of the speed gradient in the boundary layer, that is to say, it should exert the largest possible proportion of its propelling force in the part of the flow that has highest speed as seen from an immobile observer, or that has the lowest speed as seen from the ship.
  • This is akin to a jogger running with low exertion on a band with forward speed in an airport who has the same total speed as another jogger running at higher exertion in the same direction on an immobile floor.
  • this effect is called 'wake fraction' in the art, and is part of a larger concept called 'hull efficiency' that reflects the interaction between a propeller and the hull it propels.
  • propellers make maximum use of the energy of the boundary layer ('high hull efficiency') by being put in the wake of a central skeg in the aft of the ship that directs the boundary layer towards the propeller.
  • Some double-screw propellers utilise the same approach in wide ships. This approach is well proven. It is also well known that the attainable propulsive efficiency with this approach is limited in practice.
  • a very good propeller typically has open water efficiency in the vicinity of 67%, with a hull efficiency of about 108%, resulting in a total propulsive efficiency of about 73%. This percentage provides a picture that improvements of the order of 27% would be possible with an ideal propulsor.
  • the present invention relates to a propulsion system for a marine vessel that operates propulsive means within the boundary layer of the ship.
  • the employed means for propulsion include rotatable fins with their axis held substantially normal to the hull surface, and those fins translate in a mostly submerged, not purely circular, endless path along the sur- face of the hull.
  • the invention relates to a propulsion system for a maritime vessel comprising a hull having an opening through which the said propulsion system extends at least partially.
  • the said propulsive system comprises at least a set of rotatably linked elements in the form of an endless chain that drive and at least partially guide the propulsive means.
  • a guiding system guides this said endless chain in the hull along an endless path comprising at least two substantially straight atwartships parts and at least two curved parts connecting the said straight parts of the path in order to form an endless path.
  • This guiding system transmits a part of the driving forces and moments of the source of mechanical power, a part of the hydrodynamic forces and moments of the propulsive means and a part of the propulsion forces and moments to the hull, and allows the source of mechanical power to deliver mechanical power to the propulsive means through the said endless chain.
  • the invention “driving and guiding method for marine propulsion with fins on an endless-path”, described in this document solves a series of problems, the first being how to drive and guide the rotatable propulsive means along a path composed of substantially straight and composed of curved parts.
  • the difficulty is that no mechanical structures in addition to the propulsive foils are desirable in the water-flow that could disrupt this flow for reasons of hydrody- namic efficiency on one hand, and that on the other hand propulsive means, which are actuated by one or several sources of mechanical power, are subjected to mechanical and hydrodynamic forces of varying intensity, direction and origin, and this at large linear speed with respect to the vessel, resulting in large forces and large moments of varying direction and intensity on the mechanical structure at high translation speed in the path.
  • the invention provides a solution to the outlined problem by guiding and driving the propulsive means through the intermediary of a chain composed of rigid segments that are rotatably connected to each other in an endless manner, without adding any bulges on the hull or wheels in the water that would affect the flow.
  • the invention “driving and guiding method for marine propulsion with fins on an endless-path”, described in this document, solves three additional connected problems, the first being how to drive the chain that in turn drives the propulsive foils of such a system while using common sources of power in a ship such as electricity or the torque and rotation of a marine diesel, the second problem being how to avoid large dynamic and large average loading in the said chain, and the third problem being how to accommodate for the unavoidable changes in cumulative length of the said chain.
  • this invention relates to, the requirements of the chain that drives the propulsive foils are very different from the requirements of a common mechanical endless chain as described previously because:
  • the propulsive means such as foils, driven by the chain, cause substantial moments and forces on the chain segments along all three axes, which in turn requires much improved guiding, and that at all locations of the chain-segments
  • the herein described invention provides a solution to drive the chain: ⁇ while using commonly accepted prime-mover solutions in a marine environment such as electromagnetic forces or diesels with near horizontal shafts. This is made clear from drawings and associated explanations.
  • Propulsion by means of translating and rotating fins on an endless path with a substantial part of their path being substantially perpendicular to the flow around the ship possesses attractive features such as a higher efficiency than a rotating propeller and inherent steering, which eliminates the need for a separate rudder with the associated costs and the associated reliability issues; in addition it frees volume inside the hull for increased cargo accommodation.
  • the higher efficiency is achieved through better utilisation of the boundary layer which reduces impulse losses, lowers hydrodynamic friction losses, lowers induced drag losses and lowers the drag of the hull itself.
  • the higher efficiency either results in lower fuel consumption and lower installed power for the prime-movers or results in a higher service speed with the same installed propulsion power and fuel consumption.
  • This US 6435827 patent does not utilise a chain composed of rigid articulated segments, nor does it solve how to avoid putting structural elements of the propulsion system in the water-flow which would in turn generate drag and which would be susceptible of being damaged over time by the hostile sea-water environment, nor does it solve how to guide and bear the belt driving the propulsive means or the propulsive means themselves if the end-wheels are not submerged.
  • This US 6435827 patent also includes the necessity of coaxial pairs of independently rotating propulsive means which is not utilised in the presented invention.
  • DE 398832 A discloses a drive mechanism for a ship.
  • the mechanism includes propulsive means configured for moving along an endless path transverse to the longitudinal axis of the ship.
  • the said propulsive means include rotatable foils; these operate in the water-flow at a varying rotation angle and at a varying translation direction to generate the propulsive force.
  • a guiding and driving system in the propulsive system actuates these propulsive means in the hull along an endless path comprising at least two substantially straight parts oriented substantially perpendicular to the flow around the hull in the vicinity of the said opening, and the said endless path comprising at least two curved parts connecting the said straight parts of the path in order to form an endless path.
  • a further object of the present invention is to set forth a propulsive mechanism utilising fins or foils on an endless path as disclosed above, however further including an operable system introducing distinct contributions and advantages over prior art.
  • the said propulsive system comprises at least a set of rotatably linked elements in the manner of an endless chain that drives the propulsive means, and at least partially guides the propulsive means.
  • the choice of a segmented structure of rigid elements offers the possibility to simultaneously drive the said foils and guide the said foils in three translations and three rota- tions all directions, while keeping a low part-count and while avoiding material fatigue that would be caused by bending in a flexible structure such as a belt.
  • the structure of the endless chain also may, at least partially, guide the propulsive means such that the system may be further simplified by utilising the foil-stems as part of the hinge between the segments of the said endless chain.
  • the endless driving chain that may also at least partially guide the propulsive means is itself driven specifically on one or more of the substantially straight parts of the path through electromagnetic forces or through mechanical means.
  • Driving the chain on a straight part also allows the utilisation of an electrical drive with coils placed in the frame and magnets placed in the chain- segments without introducing complex loads at the end-wheels; it also allows driving the chain with a spindle the rotation axis of which would be parallel to the path of the chain.
  • the said spindle would in turn be driven by a conventional marine engine which can have a horizontal axis, which may be placed close to the centerline of the ship, and which would drive the said endless chain with very low cyclical acceleration/deceleration.
  • Driving the said endless chain on the substantially straight part of the path would therefore lead to increased operational safety and lower component weight compared to an endless chain driven conventionally by an end-wheel.
  • the endless chain may be driven on all straight parts of the path; this concentrates the cyclical acceleration/deceleration to the chain-elements at the turns and results in the lowest possible average cyclical fatigue loading throughout the endless chain.
  • a driving spindle is driving a segmented nut divided in conformal surfaces each mounted with elasticity on a segment of the endless chain. This elasticity serves to self-align optimally and to spread the load optimally between the available transmission surfaces.
  • two curved parts of the path of the endless chain translate atwartships to accommodate cumulative changes in length of the endless chain due to polygoning, due to elasticity of the chain-segments or due to thermal expansion, and to accommodate manufacturing tolerances.
  • the endless chain is driven on two straight parts of the path, and two curved parts of the path of the endless chain translate freely atwartships to accommodate cumulative changes in length of the endless chain due to polygoning, due to elasticity of the chain-segments or due to thermal expansion, and to accommodate manufacturing tolerances.
  • one or more complete systems are rotated substantially 90 degrees around the centreline of the vessel and are mounted in a large at least partially submerged vertical surface of the hull, with the propulsive means extending from the said vertical surface.
  • the atwartships movement of the fins becomes a vertical movement with the same propulsive results while reducing manoeuvring capabilities.
  • one or more complete systems are rotated substantially 90 degrees around the centreline of the vessel and are mounted in a large at least partially submerged rudder, with the propulsive means ex- tending from the rudder.
  • the atwartships movement of the fins becomes a vertical movement with the same propulsive results while adding further manoeuvring capabilities
  • the sliding connection of the segments of the endless chain with the guiding system may be realised in several ways according to common knowledge in the art with hydrodynamic bearings, with hydrostatic bearings or with wheels.
  • the spindle-drive would also be either hydrodynamic or hydrostatic for good efficiency.
  • Fig 1 is a global side-view of a vessel equipped with one propulsion system according to the invention.
  • Fig 2 is a general bottom view of a part of a vessel equipped with a propulsion system according to the present invention. It illustrates the rotatable propulsive foils, their path, and the segments of the chain partial vessel.
  • Fig 3a, 3b, 3c and 3d are bottom-views of embodiments of the part of the propulsion system according to the presented invention that is generally placed inside the submerged volume, and these views illustrate important principles of the guiding and transmission system for the propulsive foils
  • Fig 3a and 3b illustrate two embodiments of the mountings necessary to guide the endless guiding and transmission chain of the propulsive means in case wheels are utilised for the curved parts of the endless path of the propulsive means.
  • the propulsive system allows for translation of both curved-parts of the path to accommodate for changes in length of the chain; this is done by allowing the end-wheels to translate radially in the direction of the straight parts of the path. In Fig 3a only one curved part of the path can translate.
  • Fig 3c and 3d illustrate two embodiments of the mountings necessary to guide the endless guiding and transmission chain of the propulsive means in case sliding curvilinear guides are utilised for the curved parts of the endless path of the propulsive means.
  • the propulsive system allows for translation of both guides to accommodate for changes in length of the chain; this is done by allowing the curved-path guides to translate radially in the di- rection of the straight parts of the path.
  • Fig 3c only one curved part of the path can translate.
  • Fig 4a and 4b are a bottom view of an embodiment of electromagnetic drive of the transmission- and guiding chain of the propulsion system.
  • Fig 4a is a global view where the coils are visible in some straight-parts of the path to drive the chain.
  • Fig 4b is a detailed view and an enlarged detailed view of a segment of the chain with its permanent magnets; the alternating orientation of the magnets is symbolised by alternating colours in the body of the said chain segment.
  • Fig 5a, 5b, 5c, and 5d are bottom and side-views of embodiments of rack and pinion drive of the endless transmission- and guiding-chain of the said propulsion system.
  • Fig 5a and 5c are embodiments where the said endless chain is driven on the straight part by a single pinion, either with near-vertical shaft drive (fig 5a) or with near horizontal shaft drive (Fig 5c)
  • Fig 5b and 5d are embodiments where two rack and pinion connections drive the chain on the two straight parts, and where these two pinions are driven and possibly synchronised by a gear-box driven by a single near-horizontal shaft as is usual in a merchant ship.
  • Fig 6a and 6b are bottom and side-views of embodiments of spindle-drive of the endless transmission- and guiding-chain of the said propulsion system.
  • Fig 6a is an embodiment where the said endless chain is driven on the straight part by a single spindle.
  • Fig 6b shows an embodiment with one spindle on each straight part of the path, driven by a single near-horizontal shaft.
  • Fig 7a and Fig 7b are details of the embodiments described by figures 6a and 6b.
  • Fig 7a shows how the spindle connects to the endless chain
  • fig 7b shows how the nut on the chain segments (7) is constituted of elastically connected conformal surfaces
  • Fig 8a, 8b and 8c are partial views of a detailed realisation of the invention according to embodiments of drawings 1 , 2, 3d, 6b, 7a, 7b, in various levels of detail through varying the distance at which the view is taken.
  • Fig 8b and 8c show an embodiment where moments along a transversal direction of the marine vessel, stemming from longitudinal propulsion forces exerted by the propulsive means (4) outside the hull, may be borne by two sets of vertically spaced wheels, each set of wheels following parallel, vertically spaced, identical endless paths.
  • Figure 8c also shows how chain- segments (7) may be linked in order for moments in the longitudinal direction, caused by transversal actuation forces, to be subtractive, and lead to low average vertical guiding forces on the immobile structure.
  • Fig 8c also shows some details of an embodiment of a system for angular control of the propulsive means based on a spindle with a nut that follows the vertical displacement of a substantially immobile grove through a hydrostati- cally lubricated grove-follower; the said grove not being visible in the figure.
  • FIG 1 a side view of a marine vessel equipped with the invention shows that, according to the present invention, a marine vessel (1 ) accommodates a propulsion system in a part of a hull (2) that is substantially submerged.
  • the propulsion system includes translating rotatable propulsion means (4) that extend through an opening (3) of a substantially submerged part of the hull (2).
  • the rudder is also seen as part of the hull and the rudder could accommodate a said propulsion system as well.
  • Figure 2 a bottom view of the propulsor, shows that in the present invention, the said rotatable propulsion means (4) are guided in an endless path (6) characterised by substantially curved parts (12) and by complementing substantially straight parts (9) to make the said path (6) endless.
  • the endless path (6) could contain more than two said substantially straight parts (9), but at least two of the said substantially straight parts (9) of the endless path must be substantially perpendicular to the local flow of water; in the embodiment of Figure 2, this means that the straight parts of the said endless path (6) must be atwartships.
  • Figure 2 also shows the common feature of all embodiments of the presented invention: an endless segmented chain (8) that drives and at least partially guides the said propulsive means (4) in the said endless path (6).
  • the rigid segments (7) of said endless chain (8) are designated in Figures 3, but are also visible in Figure 2, which shows that each propulsive means (4) of the said propulsion system is immobilised in translation compared to at least one segment of the said endless chain (8).
  • the rotation angle of the said propulsive means (4) co-determines the direction and intensity of the thrust of the propulsive system; setting the rotation angle is not the subject of the present invention, but can be done in several manners including a system, fixed on the said chain segment (7) that immobi- lises in translation a given propulsive means (4), based on following the vertical displacement of a substantially immobile grove during the cycle with a rack and pinion connection, or a nut and spindle connection or a rod and arm connection with the grove follower.
  • Another method to set the rotation angle would be to utilise an angular amplitude limiter in combination with a well chosen chord-wise position of the rotation axis of the foils, and yet another method could be the utilisation of a controllable mechanical actuator for each said propulsive means (4).
  • Figure 3a, 3b, 3c and 3d are all bottom views of various embodiments of the guiding system of the said endless chain (8) along the said endless path (6) of the presented invention.
  • the said propulsive system has a fixed frame (20) which supports mountings (1 1 ) and (5) which guide and bear the said endless chain (8) along the said straight respectively said curved part of said endless path (6).
  • These figures also display the segmented nature of the said endless chain (8) in segments (7).
  • the said propulsive means (4), if present on a given segment (7) can be placed on any location including the hinges.
  • Friction reduction during translation of said endless chain (8) along said path (6) is done by usual means in the form of wheels or lubricated sliding of confor- mal surfaces between the said segments (7) and said mountings (1 1 ) and (5), and the means for friction reduction are seen as either part of the said mountings (1 1 ) and (5) or part of the said segments (7) according to their translating nature or not.
  • Figure 3a and 3c are two embodiments of the propulsive system where said mountings (5) of both said curved parts (12) of the said endless chain (8) translate independently in the direction of the straight part (9) of the said endless path (6).
  • This said translation of the said curved parts (12) of the endless path (6) accommodates cumulative changes in length of the said chain (8), the function and importance of which has been described previously.
  • a wheel is utilised to realise the guiding function of the said chain (8) in the curved parts (12) of said endless path (6).
  • Figure 3c a linear sliding system is utilised to realise the guiding function of the said chain (8) in the curved parts (12) of said endless path (6).
  • Figure 3b and 3d are the equivalents of Figure 3a and figure 3c in case only one curved part (12) of the endless path (6) translates.
  • Figure 4a and 4b are partial bottom views of an embodiment of the invention that show how actuation of the said endless chain (8) is done on two said straight parts (9) of the said endless path (6) by electromagnetic means.
  • the function and importance of driving the said endless chain (8) on the straight part of the said endless path (6) has been explained earlier in the text, and includes reduction of dynamic loading of the chain and reduction of forces at the end-turns.
  • Figure 4a specifically shows coils (17) that create the necessary variable magnetic field to actuate magnets (16) fixed as seen in figure 4b on the said segments (7) of the said endless chain (8).
  • the permanent magnets (16) fixed on said segments (7) have alternating orientation as symbolised by the alternating black and white colours.
  • Figures 5a, 5b, 5c, 5d are partial bottom views of an embodiment of the invention that show how actuation of the said endless chain (8) is done on one or two said straight parts (9) of the said endless path (6) by means of a rack and pinion connection from a near vertical or near horizontal shaft.
  • the function and importance of driving the said endless chain (8) on the straight part of the said endless path (6) has been explained earlier in the text, and includes reduction of dynamic loading of the chain and reduction of forces at the end-turns.
  • Figures 5a and 5c show embodiments where a single pinion (18) engages the racks (19) connected to the said segments (7) of the said endless chain that drives and at least partially guides the said propulsive means.
  • Fig 5a also outlines where and how adequate guiding by common means in the art could be positioned to achieve the desired positioning accuracy in any embodiment containing a rack and pinion transmission between a main source of mechanical power and the said endless chain.
  • Fig 5a illustrates an embodiment where the driving shaft would be vertical.
  • Fig 5c specifically shows an embodiment where the driving shaft is near- horizontal as in common in a marine environment.
  • Fig 5b and 5d show embodiments where two single pinions (18) engage the racks (19) connected to the said segments (7) of the said endless chain at two different straight parts of the said endless path (6), and where these pinions connect to a single near horizontal shaft through a gear-box.
  • the connection between the said pinions (18) to the said single input shaft is without substantial angular elasticity or play
  • the position of most said segments (7) of the said endless chain (8) are de- termined, and rigidly connected mountings (5) to guide the segments (7) on the curved parts of the said path (6) could be left to translate freely in the direction of the straight part of the path.
  • Figures 6 a and 6b are partial bottom views of an embodiment of the invention that show how actuation of the said endless chain (8) is done on one or two said straight parts (9) of the said endless path (6) by means of a spindle drive connecting a near horizontal driving shaft to a spindle (13) that drives open nuts (14) connected to the said segments (7) of the said endless chain.
  • the function and importance of driving the said endless chain (8) on the straight part of the said endless path (6) has been explained earlier in the text, and includes reduction of dynamic loading of the chain and reduction of forces at the end-turns.
  • Fig 6b shows an embodiment where two spindles (13) engage the said open nuts (14) connected to the said segments (7) of the said endless chain on two different straight parts of the said path (6), and where these said spindles (13) connect to a single near horizontal shaft through a gear-box.
  • the connection between the said spindles (13) to the said single input shaft is without substantial angular elasticity or play
  • the position of most said segments (7) of the endless said chain (8) are deter- mined on the said path (6), and rigidly connected mountings (5) to guide the said segments (7) on the curved parts of the said path (6) could be left to translate freely in the direction of the straight part of the said path (6).
  • Fig 7a and 7b show a front view of the spindle-nut connection of some embodiments according to figs 6a and 6b, where a said spindle (13) engages the nut (14) composed of conformal surfaces (15) flexibly connected to the said chain segments (7).
  • This arrangement offers the advantage of requiring much lower positioning precision between the said spindle (13) and the nut (14).
  • the conformal surfaces (15) adjust their orientation as needed and share the load through elasticity, thereby providing reliable operation.
  • Fig 8a, 8b, and 8c are partial detailed perspective views of an embodiment of the invention according to drawings 1 , 2, 3d, 6b, 7a, 7b.
  • Fig 8a shows a complete view of the said propulsive system excluding the outside covers and excluding part of the system of rotational control of the said propulsive means (4).
  • the said endless chain (8) that drives and in case completely guides the propulsive foils (4) is visible, as are the two spindles (13) that drive the chain.
  • Fig 8b shows a partial view where two said chain elements (7) guiding and driving propulsive means (4) are present and rotatably connected on the said endless path.
  • the said mountings (5) and (1 1 ) that guide the said chain along the said endless path are visible, as are the means the reduce friction, in this case the dark wheels.
  • the elements of said nut (14), fixed on the said segment (7) that engages the said spindles (13) are visible.
  • Fig 8c shows a partial view of a single said chain element (7) and the said propulsive foil (4) connected to it.
  • the said conformal flexibly mounted sur- faces (15) of the said nut are visible as are many details of the structure and mountings of the chain segment in that embodiment, including the spindle control of the rotational angle of the propulsive foil (4), and means to avoid friction between the said chain segment and the said endless path.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

La présente invention concerne un système de propulsion pour un bateau de mer dans lequel les moyens employés pour la propulsion comprennent des ailettes rotatives dont l'axe est maintenu sensiblement normal à la surface de la coque, et dans lequel ces ailettes circulent dans un trajet sans fin, immergé en majeure partie, qui n'est pas purement circulaire, le long de la surface de la coque. Comme caractéristiques additionnelles, une partie significative du trajet est sensiblement perpendiculaire à la direction de l'écoulement de l'eau qui entoure le bateau, et les axes de rotation des ailettes sont aussi sensiblement perpendiculaires au trajet sans fin.
PCT/EP2012/064693 2011-07-27 2012-07-26 Procédé d'entraînement et de guidage pour propulsion marine comportant des ailettes sur un trajet sans fin WO2013014232A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201161512249P 2011-07-27 2011-07-27
DKPA201170409 2011-07-27
DKPA201170409 2011-07-27
US61/512,249 2011-07-27

Publications (1)

Publication Number Publication Date
WO2013014232A1 true WO2013014232A1 (fr) 2013-01-31

Family

ID=47600538

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/064693 WO2013014232A1 (fr) 2011-07-27 2012-07-26 Procédé d'entraînement et de guidage pour propulsion marine comportant des ailettes sur un trajet sans fin

Country Status (1)

Country Link
WO (1) WO2013014232A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018073493A1 (fr) * 2016-10-17 2018-04-26 Teknologian Tutkimuskeskus Vtt Oy Dispositif de transformation d'énergie et procédé de transformation d'énergie

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE398832C (de) 1922-12-02 1924-07-21 Lloyd Propulsion Ltd Schiffsantrieb mit quer zur Fahrtrichtung bewegten, am Heck angeordneten Schaufelreihen
WO1988010207A1 (fr) 1987-06-26 1988-12-29 Avan Marine Limited Helices
US5401196A (en) 1993-11-18 1995-03-28 Massachusetts Institute Of Technology Propulsion mechanism employing flapping foils
US6435827B1 (en) 2000-10-27 2002-08-20 James Steiner Apparatus for generating a fluid flow
FR2898580A1 (fr) 2006-03-14 2007-09-21 Alain Pyre Propulsion de vehicules evoluant sur l'eau et/ou dans l'eau, au moyen d'une ou plusieurs ailes immergees, animees de mouvements transversaux par rapport a la trajectoire du vehicule.
US20100291814A1 (en) 2007-12-10 2010-11-18 Jacob Govert Vermeiden fin propulsion apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE398832C (de) 1922-12-02 1924-07-21 Lloyd Propulsion Ltd Schiffsantrieb mit quer zur Fahrtrichtung bewegten, am Heck angeordneten Schaufelreihen
WO1988010207A1 (fr) 1987-06-26 1988-12-29 Avan Marine Limited Helices
US5401196A (en) 1993-11-18 1995-03-28 Massachusetts Institute Of Technology Propulsion mechanism employing flapping foils
US6435827B1 (en) 2000-10-27 2002-08-20 James Steiner Apparatus for generating a fluid flow
FR2898580A1 (fr) 2006-03-14 2007-09-21 Alain Pyre Propulsion de vehicules evoluant sur l'eau et/ou dans l'eau, au moyen d'une ou plusieurs ailes immergees, animees de mouvements transversaux par rapport a la trajectoire du vehicule.
FR2898580B1 (fr) 2006-03-14 2009-01-09 Alain Pyre Propulsion de vehicules evoluant sur l'eau et/ou dans l'eau, au moyen d'une ou plusieurs ailes immergees, animees de mouvements transversaux par rapport a la trajectoire du vehicule.
US20100291814A1 (en) 2007-12-10 2010-11-18 Jacob Govert Vermeiden fin propulsion apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018073493A1 (fr) * 2016-10-17 2018-04-26 Teknologian Tutkimuskeskus Vtt Oy Dispositif de transformation d'énergie et procédé de transformation d'énergie
US11479330B2 (en) 2016-10-17 2022-10-25 Teknologian Tutkimuskeskus Vtt Oy Energy transforming device and method of transforming energy

Similar Documents

Publication Publication Date Title
US10308335B2 (en) Fin-based watercraft propulsion system
FI96757B (fi) Peräsin- ja potkurijärjestelmä
US7418912B2 (en) Steering system and an associated vessel
CN102256868A (zh) 用于船舶的横向推进器
CN100348458C (zh) 仿鱼形吊舱推进器
EP2944558A1 (fr) Système de propulsion à aile oscillante et procédé pour commander un mouvement d'une feuille mobile oscillante
CN105143033A (zh) 用于船舶的推进系统
CN109017181A (zh) 一种小型水下航行器空中运载、布放及回收系统
EP2225149B1 (fr) Element d'etancheite pour propulsion a ailerons
KR101225179B1 (ko) 추진장치 및 이를 포함하는 선박
WO2013014232A1 (fr) Procédé d'entraînement et de guidage pour propulsion marine comportant des ailettes sur un trajet sans fin
US7316194B1 (en) Rudders for high-speed ships
KR101335256B1 (ko) 터널식 스러스터 및 이를 갖춘 선박
KR20120050839A (ko) 이중반전 아지무스 추진장치 및 이를 구비한 선박
CN209142367U (zh) 一种新型船舶直翼舵
WO2013014061A1 (fr) Étanchéité pour une propulsion au moyen d'ailettes suivant un trajet sans fin
KR20120105848A (ko) 선박용 추진 장치 및 이를 포함하는 선박
CN101909983A (zh) 用于鳍状物推进器的平移托架
CN205221065U (zh) 一种带直线电机的环形平板叶片船舶
CN205221064U (zh) 一种双推环形平板桨叶机动船
IT202100016952A1 (it) Sistema di comando di una imbarcazione
KR101323797B1 (ko) 선박
Saboo et al. Study of advancement in Marine Vessel Propulsion Systems leading to progress of Steerable Control Unit
CN117585131A (zh) 一种基于电机换向更改推进系统工作模态的单向减速装置
KR101335257B1 (ko) 선박용 타, 그 구동방법 및 이를 갖춘 선박

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12740587

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12740587

Country of ref document: EP

Kind code of ref document: A1