EP0270544B1 - Fluid propulsion device with conditioned inertia - Google Patents

Fluid propulsion device with conditioned inertia Download PDF

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Publication number
EP0270544B1
EP0270544B1 EP19860905309 EP86905309A EP0270544B1 EP 0270544 B1 EP0270544 B1 EP 0270544B1 EP 19860905309 EP19860905309 EP 19860905309 EP 86905309 A EP86905309 A EP 86905309A EP 0270544 B1 EP0270544 B1 EP 0270544B1
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Prior art keywords
fluid
accelerator member
order
jets
fitted
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German (de)
French (fr)
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EP0270544A1 (en
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Jean-Bernard Chas
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Priority claimed from FR8513312A external-priority patent/FR2586645B1/en
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    • 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
    • B63H11/10—Marine propulsion by water jets the propulsive medium being ambient water having means for deflecting jet or influencing cross-section thereof
    • B63H11/103—Marine propulsion by water jets the propulsive medium being ambient water having means for deflecting jet or influencing cross-section thereof having means to increase efficiency of propulsive fluid, e.g. discharge pipe provided with means to improve the fluid flow

Definitions

  • the device, object of the invention entitled: "Device for Conditioned Inertia of the Fluid Fluid", is intended to accelerate a flow of fluid passing through it, to produce a thrust and a jet which is not very penalizing by friction, capable of producing the special effects described later.
  • Fully faired thrusters are severely penalized by the friction caused by fairings, a centrifuged and stirred fluid. If the mixing of water can make one think of the pressurization of a gas, of a favorable state to create a jet, it is in fact a waste of friction of molecules between them and on the fairings. To avoid at the rear of the propellers, this depression which occassione the resistance of the base, such a jet can not bypass the hubs, borrow a conduit which tightens, only at the cost of significant friction.
  • Document GB-A-1 011 203 relates to a jet propellant illustrated by this state of the art and in which it is proposed to restrict the jets to increase their speed, with a corollary an increase in internal pressure in line with the central section which is very penalizing.
  • the present invention aims to reverse this situation of the existing technique, which is not entirely satisfactory. This consists of putting centrifugal force on its side, to create the conditions for a more gradual acceleration of the fluid, dodging significant friction by accompanying the surfaces. Of the streamlined propellant type, the device largely gives up creating an immediate thrust effect.
  • This first phase which consists in transforming the work of one or more driving couples into kinetic energy of the fluid, is characterized by the fact that it increases this kinetic energy.
  • the second essential phase of the process being carried out by the meeting with the organ called "Wing", of this relay energy which is the accelerated fluid, thus producing the desired effect.
  • the airfoil is characterized by the fact that its surfaces, subjected on the part of the fluid under pressure, depression, react, deviating the trajectory to finally make it tend towards a preferred direction. Generally subjected to several jets from the previous organ, the airfoil produces several elementary jets tending to be decentrifuged, linear, homogeneous.
  • the fluid acceleration member essentially consists of one or more hollow bodies of revolution, containing the fluid drive members, these elements being set in rotational movement by the action of one or more driving couples.
  • this unit exerts a mainly centrifugal acceleration effect.
  • the centrifugal force is essential to this spiral path of the molecules, and used to advantage to order them against the walls which accompany them as much as possible in their movement.
  • the vacuum left in the center of the acceleration member by centrifugation, the increase in internal diameters, the longitudinal acceleration of the fluid tends to create a return of fluid from the rear in the acceleration members, generally not desirable.
  • This space is careened taking into account the parameters that determine it, or pressurized by giving itself the means.
  • a conduit is arranged through the center of the hubs or passing through the airfoil or the jet. Engine exhaust can be exhausted in this way.
  • the wing by its ability to make the trajectories tend towards the privileged direction which characterizes it, adapts its forms to the desired goal: reverse wing, lateral thrust, pumping wing.
  • the use of hollow bodies of revolution carrying wings is desirable for the elements intended to be driven in a rotational movement.
  • the wing can be partially fixed or entirely fixed. If it admits an axis of symmetry, the jet of annular section is of frustoconical shape open or closed, or cylindrical (Fig. 2). Becoming asymmetrical to facilitate installation on board, the airfoil allows the jet to be deflected or offset.
  • a jet of annular section highlights the ability of such a curtain to maintain the difference in pressures exerted on either side by fluids.
  • the molecules meeting this curtain are entrained and evacuated.
  • the center is put in depression if it is not caré or pressurized in the same way as for the previous organ.
  • the jet produced is an open frusto-conical film.
  • the device Directed against a wall, it delimits a space in depression, the fluid being sucked in the center and evacuated by the jet. Within a certain distance from the wall, the suction becomes preponderant over the thrust, the device forms a suction cup.
  • An underwater diver using a device according to the invention the suction of which is in the opposite direction to the thrust and which advantageously produces an open frusto-conical jet, made up of sufficiently numerous elementary jets, can direct it against a wall, attach to it with this hydrodynamic suction cup. Overflowing members preventing the device from coming into contact with the wall, causing the interruption of the phenomenon.
  • Jets forming waterproof curtains directed against solid or liquid surfaces, or other curtains, make it possible to participate in the partitioning of pressurized volumes, to bring the unalterable flexibility that may be necessary.
  • a succession of curtains makes it possible to add tolerable pressure differences for each of the waters.
  • the surface of the water, the deck, the two hulls, as well as a front and aft partitioning supplemented by such curtains constitutes a pressurizable volume, making it possible to lighten the ship of all or part of its weight, to better propel it.
  • the jets having played this role if they meet to be diverted, profiled surfaces integral with the ship, can still participate in the propulsion. These surfaces may belong to pads with a hydrodynamic effect.
  • the jets forming such curtains have not necessarily been accelerated in accordance with the invention, whether for a part of them, or in whole.
  • sirle device allows by its principle to dodge significant friction, there are unnecessary, inevitable, penalizing.
  • the care taken in drawing the profiles of hollow bodies, blades and their distribution the care taken in polishing the surfaces, in the use of lubricated or self-lubricating materials for the surfaces concerned has an impact on the yield.
  • the best way to make the device according to the invention consists of a marine jet propellant of the hydro-jet type, fixed inside the ship.
  • the accelerator consists of a hollow body of revolution with a flared profile, offering an increasing internal diameter (1), carrying eight profiled axial blades (2), and a propeller with two adjustable blades (3). .
  • the vacuum which would be created in the center is careened, a shutter plate (5) closing this fairing (4).
  • the closure plate has its periphery secured to the hollow body, and fitted with orifices through which the fluid passes.
  • the acceleration member forms an integral assembly, the transmission axis coming to be centered in a bearing (6) integral with the airfoil.
  • This member is surrounded by a fixed fairing (7), crossed by the shaft at (8), the seal being ensured by a cable gland.
  • This fairing open in the direction of the supply forms a fixed nozzle at (9), at the entrance to the acceleration member.
  • Semi-tight seals (10) and (10a) delimit a gap provided with vents (11), allowing the water to be evacuated by centrifugation.
  • An air inlet (12) allowing the replacement of the evacuated water by air reducing friction.
  • the airfoil consists of a hollow body of revolution (13) centered on the same axis, made integral with the previous fairing, and fixed to the ship.
  • the hollow body carries twelve decentrifuge fins (14) connected to the centering bearing.
  • a conduit (15) passing behind a fin makes it possible to act on the pressure in the center. Evacuation takes place aft of the ship, preferably in semi-immersion, allowing priming without requiring other arrangements.
  • the adjustable jet or directed on orientable surfaces provides the steering.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

In order to make it possible to accelerate a fluid traversing the present device while avoiding important frictions and efficiency losses, the device according to the invention is essentially comprised of a combination of two main members: The acceleration member comprised of hollow revolution bodies (1) containing the blades (2) and (3) for driving the fluid, is an assembly having rotation speeds and intended, while renouncing to a large extent to produce an immediate thrust effect, to use the centrifugal force in order to substantially increase the kinetic energy of the fluid. The sail outfit (13) and (14) having its surfaces subjected to the accelerated fluid, reacts, deviates the trajectories, makes them tend towards a privileged direction in the form of elementary jets which tend to be decentrifugated, linear, homogeneous, docile in order to pass round the hubs, gather through an evacuation conduit, or produce special hydrodynamic effects.

Description

Le dispositif, objet de l'invention, intitulé: "Dispositif de Propulsion a Inertie Conditionnee du Fluide", est destiné à accélérer un débit de fluide le traversant, pour produire une poussée et un jet peu pénalisant par les frottements, apte à produire les effets spéciaux décrits ultérieurement. Les propulseurs entièrement carénés sont lourdement pénalisés par les frottements qu'occasionne sur les carénages, un fluide centrifugé et brassé. Si le brassage de l'eau peut faire penser à la pressurisation d'un gaz, à un état favorable pour créer un jet, c'est en fait un gaspillage de frottements de molécules entre elles et sur les carénages. Pour éviter à l'arrière des hélices, cette dépression qui occassione la résistance de culot, un tel jet ne peut contourner les moyeux, emprunter un conduit qui se resserre, qu'au prix de frottements importants.The device, object of the invention, entitled: "Device for Conditioned Inertia of the Fluid Fluid", is intended to accelerate a flow of fluid passing through it, to produce a thrust and a jet which is not very penalizing by friction, capable of producing the special effects described later. Fully faired thrusters are severely penalized by the friction caused by fairings, a centrifuged and stirred fluid. If the mixing of water can make one think of the pressurization of a gas, of a favorable state to create a jet, it is in fact a waste of friction of molecules between them and on the fairings. To avoid at the rear of the propellers, this depression which occassione the resistance of the base, such a jet can not bypass the hubs, borrow a conduit which tightens, only at the cost of significant friction.

Le document GB-A-1 011 203 concerne un propulseur à jet qu'illustre cet état de la technique et dans lequel on propose de restreindre les jets pour en augmenter la vitesse, avec en corollaire une augmentation de la pression interne au droit de la section centrale qui est très pénalisante.Document GB-A-1 011 203 relates to a jet propellant illustrated by this state of the art and in which it is proposed to restrict the jets to increase their speed, with a corollary an increase in internal pressure in line with the central section which is very penalizing.

Pour remédier plus avantageusement à cette résistance de culot, certains constructeurs ont recours au gaz d'échappement du moteur, qu'ils évacuent par un conduit aménagé au centre des moyeux. Quelles que soient les améliorations réalisées ou à venir, le savoir faire que représente l'hélice, ces procédés, par leur principe même, sont d'un rendement limité. La force centrifuge qui leur est inhérente, les pénalise lourdement.To remedy this advantage more advantageously, certain manufacturers have recourse to the engine exhaust gas, which they evacuate by a conduit arranged in the center of the hubs. Whatever improvements made or to come, the know-how represented by the propeller, these processes, by their very principle, are of limited yield. The inherent centrifugal force penalizes them heavily.

Aller dans le sens de conditions idéales d'accélération d'un fluide consiste à faire en sorte que:

  • -bien que le travail soit fourni par un couple moteur, la force centrifuge ne soit pas pénalisante,
  • -les molécules soumises à de mêmes contraintes, répondant par de mêmes trajectoires, il n'y ait plus brassage, mais fluide homogène,
  • -l'inertie communiquée à toutes les molécules soit utilisée à l'effet recherché, sans évasion possible,
  • -les frottements soient évités ou atténués,
  • -l'action successive d'aubages sur un fluide progressivement accéléré soit possible.
To go in the direction of ideal conditions of acceleration of a fluid consists in ensuring that:
  • - although the work is provided by a motor torque, the centrifugal force is not penalizing,
  • - molecules subject to the same constraints, responding by the same trajectories, there is no longer mixing, but homogeneous fluid,
  • -the inertia communicated to all the molecules is used for the desired effect, without possible escape,
  • - friction is avoided or reduced,
  • -the successive action of blasting on a gradually accelerated fluid is possible.

La présente invention vise à retourner cette situation de la technique existante, qui n'est pas entièrement satisfaisante. Cela consiste à mettre de son côté la force centrifuge, pour créer les conditions d'une accélération plus progressive du fluide, esquiver des frottements importants par accompagnement des surfaces. Du type propulseur caréné, le dispositif renonce pour une bonne part à créer un effet immédiat de poussée.The present invention aims to reverse this situation of the existing technique, which is not entirely satisfactory. This consists of putting centrifugal force on its side, to create the conditions for a more gradual acceleration of the fluid, dodging significant friction by accompanying the surfaces. Of the streamlined propellant type, the device largely gives up creating an immediate thrust effect.

Il choisit délitérément, s'alliant la force centrifuge, d'accélérer sur plusieurs tours. Cette première phase quie consiste à transformer le travail d'un ou plusieurs couples moteurs en énergie cinétique du fluide, se caractérise par le fait qu'elle accroit cette énergie cinétique. La seconde phase essentielle au procédé étant réalisée par la rencontre avec l'organe appelé "Voilure", de cette énergie relais qu'est le fluide accéléré, produisant ainsi l'effet recherché. La voilure se caractérisé par le fait que ses surfaces, soumises de la part du fluide à pression, dépression, réagissent, déviant la trajectoire pour finalement la faire tendre vers une direction privilégiée. Soumise généralement à plusieurs jets issus de l'organe précédent, la voilure produit plusieurs jets élémentaires tendant à être décentrifugés, linéaires, homogènes.He selects in concert, combining the centrifugal force, to accelerate over several laps. This first phase which consists in transforming the work of one or more driving couples into kinetic energy of the fluid, is characterized by the fact that it increases this kinetic energy. The second essential phase of the process being carried out by the meeting with the organ called "Wing", of this relay energy which is the accelerated fluid, thus producing the desired effect. The airfoil is characterized by the fact that its surfaces, subjected on the part of the fluid under pressure, depression, react, deviating the trajectory to finally make it tend towards a preferred direction. Generally subjected to several jets from the previous organ, the airfoil produces several elementary jets tending to be decentrifuged, linear, homogeneous.

L'organe d'accélération du fluide est essentiellement constitué d'un ou plusieurs corps creux de révolution, contenant les organes d'entrainement du fluide, ces éléments étant mis en mouvement de rotation par l'action d'un ou plusieurs couples moteurs. Par le jeu des vitesses de rotation et des diamètres croissants, cet ensemble exerce un effet d'accélération principalement centrifuge. Au lieu d'être pénalisante, la force centrifuge est essentielle à ce parcours en spirale des molécules, et mise à profit pour avantageusement les ordonnancer contre les parois qui les accompagnent autant que possible dans leur mouvement. Le vide laissé au centre de l'organe d'accélération par la centrifugation, l'accroissement des diamètres intérieurs, l'accélération longitudinale du fluide, tend à créer un retour de fluide par l'arrière dans les organes d'accélération, généralement pas souhaitable. Cet espace est carèné en tenant compte des paramètres qui le déterminent, ou pressurisé en s'en donnant les moyens. On aménage pour ce faire un conduit par le centre des moyeux ou traversant la voilure ou le jet. Les gaz d'échappement du moteur peuvent être évacués de cette manière.The fluid acceleration member essentially consists of one or more hollow bodies of revolution, containing the fluid drive members, these elements being set in rotational movement by the action of one or more driving couples. By the play of the speeds of rotation and the increasing diameters, this unit exerts a mainly centrifugal acceleration effect. Instead of being penalizing, the centrifugal force is essential to this spiral path of the molecules, and used to advantage to order them against the walls which accompany them as much as possible in their movement. The vacuum left in the center of the acceleration member by centrifugation, the increase in internal diameters, the longitudinal acceleration of the fluid, tends to create a return of fluid from the rear in the acceleration members, generally not desirable. This space is careened taking into account the parameters that determine it, or pressurized by giving itself the means. To do this, a conduit is arranged through the center of the hubs or passing through the airfoil or the jet. Engine exhaust can be exhausted in this way.

La voilure, par sa faculté de faire tendre les trajectoires vers la direction privilégiée qui la caractérisé, adapte ses formes au but recherché: voilure de marche arrière, de poussée latérale, de pompage. Un même dispositif ayant plusieurs voilures, la distribution se fait de l'une à l'autre par translation des organes par exemple. L'emploi de corps creux de révolution porteurs d'aile- tees est souhaitable pour les éléments destinés à être animés d'un mouvement de rotation. La voilure peut être partiellement fixe ou entièrement fixe. Si elle admet un axe de symétrié, le jet de section annulaire est de forme troncônique ouverte ou fermée, ou cylindrique (Fig. 2). Devenant dissymétrique pour faciliter l'installation à bord, la voilure permet de dévier le jet ou de l'excentrer. On peut aussi lui demander un ou plusieurs alignements de jets élémentaires adjacents pour former un rideau destiné à être étanche. A l'arrière de la voilure, un jet de section annulaire met en évidence la faculté d'un tel rideau de maintenir la différence de pressions exercées de part et d'autre par des fluides. Les molécules rencontrant ce rideau sont entraînées et évacuées. La centre est mis en dépression s'il n'est pas carèné ou pressurisé de la même manière que pour l'organe précédent. Dans un cas rudimentaire de réalisation d'un dispositif suivant l'invention, constitué d'un cône en rotation autour de son axe, totalement ou partiellement immergé, sa surface interne constituant à la fois et en combinaison l'organe d'accélération et la voilure, le jet produit est un film troncônique ouvert. Dirigé contre une paroi, il délimite un espace en dépression, le fluide étant aspiré au centre et évacué par le jet. A moins d'une certaine distance de la paroi, l'aspiration devient prépondérante sur la poussée, le dispositif forme ventouse. Un plongeur sous-marin qui utilise un dispositif conforme à l'invention dont l'aspiration se fait en sens inverse de la poussée et qui produit avantageusement un jet troncônique ouvert, constitué de jets élémentaires suffisamment nombreux, peut, le dirigeant contre une paroi, s'y fixer, grâce à cette ventouse hydrodynamique. Des organes débordeurs évitant que la dispositif ne vienne en contact avec la paroi, provoquer, l'interruption du phénomène. Des jets formant rideaux étanches, dirigés contre des surfaces solides, ou liquides, ou d'autres rideaux, permettent de participer au cloisonnement de volumes pressurisés, d'apporter la souplesse inaltérable pouvant être nécessaire. Comme pour les jupes de coussins d'air, une succession de rideaux permet d'ajouter des différences de pression tolérables pour chacun d'aux. Dans le cas d'un navire catamaran, par exempla, la surface de l'eau, le pont, les deux coques, ainsi qu'un cloisonnement avant et arrière complèté par de tels rideaux, constitue un volume pressurisable, permettant d'allèger le navire de tout ou partie de son poids, pour mieux le propulser. Las jets ayant joué ca rôle, s'ils rencontrant pour y être déviés, des surfaces profilées solidaires du navire, peuvent encore participer à la propulsion. Ces surfaces peuvent appartenir à des patins à effet hydrodynamique. Les jets formant de tels rideaux n'ont pas nécessairement été accélérés conformément à l'invention, que ce soit pour une partie d'entre eux, ou en totalité.The wing, by its ability to make the trajectories tend towards the privileged direction which characterizes it, adapts its forms to the desired goal: reverse wing, lateral thrust, pumping wing. The same device having several wings, the distribution is made from one to the other by translation of the members for example. The use of hollow bodies of revolution carrying wings is desirable for the elements intended to be driven in a rotational movement. The wing can be partially fixed or entirely fixed. If it admits an axis of symmetry, the jet of annular section is of frustoconical shape open or closed, or cylindrical (Fig. 2). Becoming asymmetrical to facilitate installation on board, the airfoil allows the jet to be deflected or offset. It can also be asked for one or more alignments of adjacent elementary jets to form a curtain intended to be waterproof. At the rear of the wing, a jet of annular section highlights the ability of such a curtain to maintain the difference in pressures exerted on either side by fluids. The molecules meeting this curtain are entrained and evacuated. The center is put in depression if it is not caré or pressurized in the same way as for the previous organ. In a rudimentary embodiment of a device according to the invention, consisting of a cone in rotation around its axis, totally or partially ment submerged, its internal surface constituting both and in combination the accelerator and the wing, the jet produced is an open frusto-conical film. Directed against a wall, it delimits a space in depression, the fluid being sucked in the center and evacuated by the jet. Within a certain distance from the wall, the suction becomes preponderant over the thrust, the device forms a suction cup. An underwater diver using a device according to the invention, the suction of which is in the opposite direction to the thrust and which advantageously produces an open frusto-conical jet, made up of sufficiently numerous elementary jets, can direct it against a wall, attach to it with this hydrodynamic suction cup. Overflowing members preventing the device from coming into contact with the wall, causing the interruption of the phenomenon. Jets forming waterproof curtains, directed against solid or liquid surfaces, or other curtains, make it possible to participate in the partitioning of pressurized volumes, to bring the unalterable flexibility that may be necessary. As with the air cushion skirts, a succession of curtains makes it possible to add tolerable pressure differences for each of the waters. In the case of a catamaran ship, for example, the surface of the water, the deck, the two hulls, as well as a front and aft partitioning supplemented by such curtains, constitutes a pressurizable volume, making it possible to lighten the ship of all or part of its weight, to better propel it. The jets having played this role, if they meet to be diverted, profiled surfaces integral with the ship, can still participate in the propulsion. These surfaces may belong to pads with a hydrodynamic effect. The jets forming such curtains have not necessarily been accelerated in accordance with the invention, whether for a part of them, or in whole.

Même sirle dispositif suivant l'invention permet par son principe d'esquiver des frottements importants, il en subsiste d'inutiles, inévitables, pénalisantes. De même que le soin apporté au dessin des profils des corps creux, d'aubages et à leur répartition, le soin apporté au polissage des surfaces, à l'emploi de matériaux lubrifiés ou autolubrifiants pour les surfaces concernées a une incidence sur le rendement.Even sirle device according to the invention allows by its principle to dodge significant friction, there are unnecessary, inevitable, penalizing. As with the care taken in drawing the profiles of hollow bodies, blades and their distribution, the care taken in polishing the surfaces, in the use of lubricated or self-lubricating materials for the surfaces concerned has an impact on the yield.

La meilleure manière de réaliser le dispositif suivant l'invention, représenté Fig. 1, consiste en un propulseur carèné marin de type hydro-jet, fixé à l'intérieur du navire. L'organe d'accélération est constitué d'un corps creux de révolution au profil évasé, offrant un diamètre intérieur croissant (1), porteur de huit aubages axiaux profilés (2), et d'une hélice à deux pales orientables (3). Le vide qui serait crée au centre est carèné, une plaque d'obturation (5) fermant ce carénage (4). La plaque d'obturation a sa périphérie solidaire du corps creux, et aménagée d'orifices où passe le fluide. L'organe d'accélération forme un ensemble solidaire, de l'axe de transmission venant se centrer dans un palier (6) solidaire de la voilure. Cet organe est enveloppé d'un carénage fixe (7), traversé par l'arbre en (8), l'étanchéité étant assurée par presse étoupe. Ce carénage ouvert en direction de l'alimentation forme tuyère fixe en (9), à l'entrée de l'organe d'accélération. Des joints semi-étanches (10) et (10 bis) délimitent un interstice muni d'évents (11), permettant à l'eau de s'évacuer par centrifugation. Une arrivée d'air (12) permettant le remplacement de l'eau évacuée par de l'air réduisant les frottements. La voilure est constituée d'un corps creux de révolution (13) centré sur le même axe, rendu solidaire du carénage précédent, et fixé au navire. Le corps creux est porteur de douze ailettes de décentrifugation (14) reliées au palier de centrage. Un conduit (15) passant derrière une ailette permet d'agir sur la pression au centre. L'évacuation se fait à l'arrière du navire, de préférence en semi-immersion, permettant l'amorçage sans nécessiter d'autres dispositions. Le jet orientable ou dirigé sur des surfaces orientables assure la gouverne.The best way to make the device according to the invention, shown in FIG. 1, consists of a marine jet propellant of the hydro-jet type, fixed inside the ship. The accelerator consists of a hollow body of revolution with a flared profile, offering an increasing internal diameter (1), carrying eight profiled axial blades (2), and a propeller with two adjustable blades (3). . The vacuum which would be created in the center is careened, a shutter plate (5) closing this fairing (4). The closure plate has its periphery secured to the hollow body, and fitted with orifices through which the fluid passes. The acceleration member forms an integral assembly, the transmission axis coming to be centered in a bearing (6) integral with the airfoil. This member is surrounded by a fixed fairing (7), crossed by the shaft at (8), the seal being ensured by a cable gland. This fairing open in the direction of the supply forms a fixed nozzle at (9), at the entrance to the acceleration member. Semi-tight seals (10) and (10a) delimit a gap provided with vents (11), allowing the water to be evacuated by centrifugation. An air inlet (12) allowing the replacement of the evacuated water by air reducing friction. The airfoil consists of a hollow body of revolution (13) centered on the same axis, made integral with the previous fairing, and fixed to the ship. The hollow body carries twelve decentrifuge fins (14) connected to the centering bearing. A conduit (15) passing behind a fin makes it possible to act on the pressure in the center. Evacuation takes place aft of the ship, preferably in semi-immersion, allowing priming without requiring other arrangements. The adjustable jet or directed on orientable surfaces provides the steering.

Claims (4)

1. A device for producing thrust from a flow of accelerated fluid, the device comprising:
a largely centrifugal fluid accelerator member (1, 4) comprising a hollow body of revolution (1) through which the fluid flow passes, the body being fitted with drive vanes (2, 3), said member being driven in rotation about its axis (8); and
a stationary deflector (13) constituted by a hollow body of revolution (13) centered on the axis (8) of the accelerator member and fitted with a plurality of fins (14) which are shaped to straighten out the trajectory of the fluid delivered by the accelerator member so as to form a set of elementary jets which are linear and uniform;
the device being characterized in that it includes at least one means (15) for putting the space inside the hollow jet into communication with an external source of pressure.
2. A device according to claim 1, characterized in that it includes removable means (17) for altering the thrust direction of the jets.
3. A device according to claim 1, characterized in that the accelerator member comprises two concentric bodies (1, 4) defining a flared annular channel through which the fluid flow passes.
4. A device according to claim 3, characterized in that the accelerator member (1, 4) is mounted to rotate inside a stationary fairing (7) fitted with means (11, 12) for replacing water with air in the space delimited inside said fairing by the accelerator member.
EP19860905309 1985-09-05 1986-09-02 Fluid propulsion device with conditioned inertia Expired - Lifetime EP0270544B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86905309T ATE60018T1 (en) 1985-09-05 1986-09-02 PROPULSION DEVICE WITH DIRECTIONAL FLUID INERTIA.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8513312 1985-09-05
FR8513312A FR2586645B1 (en) 1985-09-05 1985-09-05 FLUID CONDITIONED INERTIA PROPULSION DEVICE
FR8600831A FR2593138B2 (en) 1985-09-05 1986-01-20 FLUID CONDITIONED INERTIA PROPULSION DEVICE.
FR8600831 1986-01-20

Publications (2)

Publication Number Publication Date
EP0270544A1 EP0270544A1 (en) 1988-06-15
EP0270544B1 true EP0270544B1 (en) 1991-01-16

Family

ID=26224708

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860905309 Expired - Lifetime EP0270544B1 (en) 1985-09-05 1986-09-02 Fluid propulsion device with conditioned inertia

Country Status (4)

Country Link
EP (1) EP0270544B1 (en)
DE (1) DE3677021D1 (en)
FR (1) FR2593138B2 (en)
WO (1) WO1987001353A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6527520B2 (en) 1999-07-29 2003-03-04 Jonathan B. Rosefsky Ribbon drive pumping with centrifugal contaminant removal
US6626638B2 (en) 1999-07-29 2003-09-30 Jonathan B. Rosefsky Ribbon drive power generation for variable flow conditions
CA2380440A1 (en) 1999-07-29 2001-02-08 Jonathan B. Rosefsky Ribbon drive pumping apparatus and method
ES2407904B1 (en) * 2010-10-13 2014-09-02 Fº JAVIER PORRAS VILA SUBMARINE-PLANE

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Publication number Priority date Publication date Assignee Title
US1498919A (en) * 1923-06-19 1924-06-24 Jensen Harald Hydraulic propulsion arrangement for ships
GB1011203A (en) * 1961-08-09 1965-11-24 F E Parsons Corp Marine craft propelling device
FR1408168A (en) * 1963-10-08 1965-08-13 Hydrodynamic propeller with helical wheel and radial translation, allowing the reversal of the direction of propulsion
US3405526A (en) * 1967-03-01 1968-10-15 Twin Disc Inc Multiple stage, hydraulic jet propulsion apparatus for water craft
DE1901374A1 (en) * 1969-01-13 1970-10-01 Hermann Ebner Water jet propulsion for watercraft
US3678689A (en) * 1970-09-04 1972-07-25 Samford P Ishiwata Submerged multistage pump usable as propulsion unit
GB1319044A (en) * 1972-02-25 1973-05-31 Hodgson D Pneumatic turbine propulsion unit for vessels
IT987301B (en) * 1973-01-25 1975-02-20 Generali Vittorio JET PUMP FOR SMALL BOATS
US3970030A (en) * 1975-09-25 1976-07-20 Rockwell International Corporation Internal thrust reverser
DE2625818A1 (en) * 1976-06-09 1977-12-22 Rockwell International Corp Axial flow conical hub pump impeller in housing - has relative flow direction at plus or minus 0.5 degrees to suction side of leading blade tip edge

Also Published As

Publication number Publication date
FR2593138A2 (en) 1987-07-24
WO1987001353A1 (en) 1987-03-12
EP0270544A1 (en) 1988-06-15
FR2593138B2 (en) 1988-03-18
DE3677021D1 (en) 1991-02-21

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