Controlling and regulating shut-off device for a hydrojet maintains sufficient water pressure when a reduced driving power is produced thus giving a pushing force in random two-dimensional directions

Controlling and regulating shut-off device maintains sufficient water pressure when a reduced driving power is produced thus giving a pushing force in random two-dimensional directions.

Wasserfahrzeug

WATER JET PROPULSION APPARATUS FOR MARINE CRAFT

... 1314976 Water jet propulsion HYDROCUSHION CONSULTANTS Ltd and C VIN. TEN 25 Aug 1970 [26 Aug 1969] 42395/69 Heading B7V A water jet propulsion unit comprises a mixed flow impeller 4 rotatable in a circular duct 1, the cross-section of which decreases smoothly from inlet to outlet. The unit is also provided with a rudder 20 and a pair of wide bottom doors (24) 25 which can be closed over the outlet to reverse the thrust. The water inlet (not shown) is flush with the bottom of the boat.

Hydrovain marine turbo air injection for marine & ships

Jet engine powered boats

VARIABLE VENTURI

The invention relates to a variable venturi for a watercraft vehicle or similarly powered vehicle which allows the operator of the vehicle to selectively choose to operate a watercraft vehicle for achieving maximum acceleration or, alternatively, maximum top end speed. The venturi is comprised of a collar surrounding the venturi adjacent to a distal end of the venturi. At such time as the collar is activated, exposing the water flow exiting the venturi to atmospheric pressure, the diameter of the water flow exiting the venturi is reduced by approximately 1.0 mm. to 1.5 mm. in radius. This slight change in the surface area of the water flow provides a lower mass flow of the exiting water with an increased velocity of the water and top speed of the vehicle. Alternatively, a larger diameter venturi provides a higher mass flow with a decreased velocity and maximum acceleration. In a preferred embodiment, the vehicle comprises a means for allowing the rotation of the engine or the pressure of the water flow to activate an actuator means for altering the surface area of the water exiting the venturi. The preferred embodiment is comparable to automatic shifting of a transmissions for a conventional land vehicle. In an alternative embodiment, the collar may be manually controlled by an operator of the vehicle to modify the surface area of the water flow exiting the venturi, thereby allowing the vehicle to achieve maximum acceleration.

Water jet system.

The turbine with counter-rotating propeller drive recuperative.

Die Erfindung umfasst ein Verfahren und eine Vorrichtung zur Steigerung der Effizienz von Strahlantrieben durch Rekuperation von Nutzleistung aus der Propulsionsströmung. Ein von einer Antriebsmaschine über eine Antriebswelle (1) angetriebener Mantel-Propeller (4) im Propellergehäuse fördert das Fluid für den Strahlantrieb aus dem Innenraum V i einer Radialturbine (6). Das Fluid wird axial beschleunigt und nach hinten gegen die Fahrtrichtung ausgestossen. Dadurch entsteht Schub. Weil der Druck im Innenraum der Turbine sinkt, strömt neues Fluid aus der Umgebung direkt über die Schaufeln der rotierenden Radialturbine (6) von aussen nach innen und treibt sie dadurch an. Ein Leitapparat fehlt. Die Leistung der Radialturbine (6) wird über ein Getriebe (2) an die Antriebswelle (1) des Propellers (4) übertragen, was die Antriebsmaschine entlastet und die Effizienz des Strahlantriebs erhöht. Die Erfindung ist besonders gut geeignet für elektrische Antriebe.

Marine propulsor

Device for propulsion with conditioned inertia of fluid

PROPULSION SYSTEM FOR SHIPS

Propulsion system (1) for ships, comprising: at least one water intake opening (2), said at least one intake opening (2) being positioned near a stem (3) of a ship; at least one water feed duct (4), said feed duct (4) collecting the water at said at least one intake opening (2) and feeding the water to a propulsion circuit (5); characterized in that said propulsion circuit (5) comprises a first module (6) positioned hydraulically upstream of an electricity generator (7) using the force of the water as motive power source for producing electricity, said first module (6) comprising: a first conical nozzle (8) with a closed base (9) and a vertex (10) connected hydraulically to said electricity generator (7), said first conical nozzle (8) being positioned coaxially with respect to an axis of rotation (11) of the moving rotating parts of the electricity generator (7); at least one electric water pump (12) connected hydraulically via a pipe (13) to said feed duct (4), said water pump (12) being ...

VARIABLE MARINE JET PROPULSION

A variable marine jet propulsion system incorporates a motor (21), variable pitch propeller pump (50) in a spherical housing (62), a variable housing and a variable inlet duct, and a microcontroller (140). The pump, nozzle, and inlet are controlled by the microcontroller, which is programmed to control the pump as a continuously variable power transmission for maintaining efficient motor operation, the nozzle for maintaining efficient pump operation, and the inlet for maintaining efficient recovery of the total dynamic head of the incoming water. The spherical pump housing maintains close fits to the propeller vane tips for more efficient operation at all pitches, including zero and reverse pitches. Zero pitch results in no effective pumping action, effectively a true neutral in fluid power transmission. Reverse pitch in combination with the large variable nozzle provide reverse flow and consequently reverse thrust, which eliminates the need for a backing bucket.

HYDRAULIC PROPELLER ENHANCEMENT METHOD

The present invention relates to a hydraulic propeller enhancement method for enhancing the propelling force of a hydraulic propeller. The present invention uses a gas release outlet in the propeller at the area where the high-speed axial flow of water passes for guiding in a gas by means of a negative pressure subject to Bernoulli's principle. Thus, subject to Bernoulli's principle, gas compressible characteristic and Boyle's law and the arrangement of the contracted end piece of the nozzle to work as an air compressor for compressing air bubbles, the invention uses one single gas guide device and a negative pressure suction force to guide in air bubbles to enhance the propelling force of the hydraulic propeller.

Propulsion for water vehicles

Vortex raster scanning cone

Water prepulsion system outlet channel end section and main channel modifications for marine and commercial vessels

Marine jet drive outlet with pressurised air injection

An outlet channel A of a marine water jet drive has pressurised air injected into the stream of water exiting said outlet channel. The air is injected from a number of air injection ports D3, mounted on and equally spaced around the circumference of said outlet channel. The air injection ports may be connected to a source of pressurised or compressed air by pressure air lines C1. Cowl plates 1A may be fitted to the jet drive outlets to protect them from damage.

WATER JET DRIVE UNIT

Ducted channel wing, high-lift devices and vehicles therefor

Water jet propulsion unit for use in water borne craft

Marine propulsor

WATER JET PROPULSION APPARATUS

To sufficiently reduce a rotation component of a water stream very close to the external face of a cap 34 of a bearing, reduce the size of the cap 34, and make positioning between the cap 34 and another stationary vane 31c1 unnecessary. In a water jet propulsion apparatus having a duct 31 forming a channel, an impeller 32 disposed in the duct 31, a bearing 33 of the impeller 32 provided in the duct 31, and a cap 34 closing the rear end of the bearing 33, stream straightening grooves 34a are formed in the external face of the cap 34. In a portion facing the cap 34, in the internal face of the duct 31, a stationary vane 31c1 is formed toward the cap 34.

UNDERWATER TWO PHASE RAMJET ENGINE

An underwater two-phase ramjet propulsion unit includes an inlet (104) for receiving a flow of water, a compressed gas injector (132, 134) for injecting compressed gas into the flow of water, a mixing chamber (106) for mixing the compressed gas with the water to provide a two-phase flow of working fluid, and a nozzle (108) for accelerating the two-phase working fluid to generate a two-phase jet. The propulsion unit can be implemented with fixed geometry or variable geometry. The propulsion unit includes a supersonic gas injector (132) as well as a subsonic gas injector (134). The propulsion unit includes a control system (110) for controlling the compressor (122), supersonic gas injector (132), subsonic gas injector (134), the geometry of the unit, and the direction of the thrust vector.

Improvements with the devices of propulsion of the ships by reaction

Propulsion system for e.g. pleasure boat, has aspiration pump driven by electrical motor and including variable high pressure outlet adapted for pushing boat, where pump draws water to outlet according to size of boat

... 1. Système de propulsion pour bateau comprenant une pompe d'aspiration (POM AS) qui est entraînée par un moteur électrique et qui comprend une sortie haute pression (HP) adaptée pour pousser le bateau. Ce système comporte une électrovanne proportionnelle ...

MARINE PROPULSOR

The invention describes a marine propulsor that has a rotor (46) that is, at least in its majority, enclosed by structure (54) where said rotor receives water over at least a majority of its lower portions and gas over at least part of its upper portions. It is possible to delete the gas flow by a valve (48) which also directs water to the rotor vanes (52) and preferably has a curvilinear water contacting surface so that water will adhere to and follow that surface. The strength of the rotor can be increased by a rotor ring (47) that can be inset into a recess (53) in the adjacent housing to minimize drag of the rotor ring. A steering and reversing system for the marine propulsor is also proposed. It includes a steering rudder (45) that is in mechanic communication with reversing guide vanes (44) such that movement of the steering rudder causes a common movement of the discharge flow when in reverse. A water deflecting flap (51) is optionally provided to deflect water from hitting the reversing ...

Design of a flush inlet as integrated with a ship hull for waterjet propulsion

The present invention's methodology for designing a fluid propulsion intake configuration of a marine vessel considers the integral geometry of the inlet together with a portion of the hull, with respect to which the inlet's entrance opening is flush. The inventive methodology typically includes definition of an inlet reference line (an axial description, straight and/or curved, of the inlet), cross-planes (each of which perpendicularly intersects the inlet reference line), a footprint (a planar outline of the inlet's entrance opening), an inlet shaping line (a projection of the footprint onto the hull portion), inlet flow lines (angularly spaced about the circumference of the inlet shaping line, each connecting the cross-planes), two fairing reference curves (one at the inlet's entrance opening and the other on the hull portion, thereby demarcating a fairing therebetween that is consistent with the inlet flow lines), and a lip nose (at the inlet's entrance opening).

COMPACT WATER-JET PROPULSION AND STEERING SYSTEM

Die Erfindung bezieht sich auf das Gebiet des Schiffbaus und ist zum Einsatz auf schnellgangigen Verdrängungsbooten, Kuttern und Motorbooten vorgesehen. Sie löst die Aufgabe der Schaffung eines Kleinwasserstrahlantriebs mit verminderten Kennwerten für Gewicht und Abmessungen. Außerdem werden gemäß dieser Erfindung die Aufgaben bezüglich der Erhöhung des Antriebswirkungsgrads, der Fertigungsgerechtheit der Antriebsherstellung sowie Aufgaben des Umweltschutzes gelöst. Zur Verwirklichung der vorgeschlagenen Vorrichtung wird ein Wasserstrahlantriebs- und Steueraggregat vorgeschlagen, das eine Wasserleitung, eine hydraulische Druckvorrichtung mit einer Strömungshaube in der Nabe, die an einer in Lagern gelagerte Welle angebracht ist, einen Entdrallapparat mit Profilständern, die die Strömungshaube der Nabe des Laufrads an der Düse befestigen, und eine Umsteuerrudereinrichtung umfasst, die einen Schwenkdeflektor besitzt. Das Wasserstrahlantriebs-- und Steueraggregat gewährleistet eine Bewegung ...

WATER JET PROPULSION UNIT FOR USE IN WATER BORNE CRAFT

A water jet propulsion unit for water borne craft including two contra rotating impellers (5, 6), located in an upstream pump housing and a downstream pump housing respectively, and mounted on coaxial shafts (2, 3). A pressure control priming device (10) in the form of a spring loaded collapsible skirt is located between the impellers (5, 6). The pressure in the downstream pump housing can be maintained at atmospheric pressure by the controlled admission of air through air inlets (11).

Эжекторный двухконтурный водометный движитель для подводных аппаратов

FIELD: ship building. SUBSTANCE: invention relates to shipbuilding, in particular to construction of water jet propeller for underwater vehicles. Ejector two-circuit water jet propeller for underwater vehicles contains a main ring-shaped body with annular inner contour for water streams movement. In the main ring-shaped body, water intake with aerodynamic guide vanes, propeller, straightening profiled blades and jet nozzle are successively located. Water jet propeller is equipped with additional ring-shaped body with annular outer contour for water streams movement. Additional annular body is rigidly connected to outer surface of main annular body by aerodynamic profile divider ribs and is installed coaxially with main ring-shaped body with displacement of additional annular body introduced into water inlet device with respect to water intake of the main annular body with formation after propeller of jet nozzle common cut of main annular body and additional ring-shaped body introduced into jet nozzle device. Before introducing rectified profiled blades into device, iris diaphragm is installed in nozzle critical section, and teardrop fairing is fixed along axis of symmetry at outlet of adjustable jet nozzle. EFFECT: increase in thrust is achieved while maintaining energy costs on propeller and increasing propulsive characteristics of the propulsion device. 1 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 647 406 C1 (51) МПК B63H 11/103 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК B63H 11/103 (2018.01) (21)(22) Заявка: 2016140306, 12.10.2016 (24) Дата начала отсчета срока действия патента: Дата регистрации: 15.03.2018 (45) Опубликовано: 15.03.2018 Бюл. № 8 2 6 4 7 4 0 6 R U (56) Список документов, цитированных в отчете о поиске: SU 956351 A, 07.09.1982. RU 2213677 C2, 10.10.2003. RU 2057684 C1, 10.04.1996. DE 2921580 A1, 11.12.1980. (54) Эжекторный двухконтурный водометный движитель для подводных ...

Marine jet drive outlet with pressurised air injection

FAST, BY AT LEAST ONE WATERJET PROPELLING, SHIP WITHOUT WASTE GAS PLUME

DRIVE FOR FAST SHIPS

SHIP WITH A DRIVE BY INTERIOR ON-BOARD ENGINES AND WATERJETS

Waterjet propulsion unit

Underwater two phase ramjet engine

WATER JET PROPULSION APPARATUS

ENTERED OF MOBILE SLOPE FOR SHIPS REACTION HAS

SHIP DRIVEN BY INBOARD ENGINES AND WATER JETS

A ship which is driven by inboard engines with propellers (3) and by water jets (1) producing jets of water (7). The inboard engines (2) are embodied in the form of electric motors and the water jets (1) are used underneath the bottom of the ship. The electric inboard engines are accommodated in skegs (10) on the underside of the ship. A flow channel is formed between the skegs (10) for the jets of water (7) emitted by the water jets (1).

WATER JET PROPULSION UNIT FOR USE IN WATER BORNE CRAFT

La présente invention concerne une unité de propulsion par jet d'eau pour bateau, fonctionnant au moyen de deux turbines contrarotatives (5,6) montées sur des arbres coaxiaux (2,3) et disposées respectivement dans des logements amont et aval. Un dispositif d'amorçage de commande de pression (10), sous la forme d'une chemise à ressort déformable, est placé entre les turbines (5,6). Il est possible de maintenir la pression atmosphérique dans le logement de pompe aval à l'aide d'une admission d'air régulée via des entrées (11).

HIGH PERFORMANCE MARINE PROPULSION SYSTEM

The invention describes a marine propulsor (31) that has a rotor (46) that is, at least in its marjority, enclosed by structure where the rotor receives water over at least part of its upper portions. It is possible to delete the gas flow by use of one or more valves (48) so that an approximate doubling of water flow rate occurs which is valuable as a thrust enhancer for low and mid-range vehicle speed operation. It is also possible to operate the rotor with water directed mainly to its lower portions but with little partial vacuum over the upper portions of the rotor vanes. When used, a water directing valve (48) that directs water to the rotor vanes preferably has a curvilinear water contacting surface so that water will adhere to and follow that structure. A simple steering and reversing system for marine propulsors is also proposed. It includes a steering rudder (45) that is in mechanical communication with reversing guide vanes or nozzles (44) such that movement of the steering rudder ...

Marine propulsor

The instant invention describes an advanced marine propulsor that has a rotor that is, at least in its majority, enclosed by structure where the rotor, in its preferred embodiment, receives water over at least a majority of its lower portions and gas over at least part of its upper portions. It is possible to delete the gas flow by use of a valve or structure so that an approximate doubling of water flow rate occurs which is valuable as a thrust enhancer for low and mid-range marine vehicle speed operation. It is also possible to operate the rotor with water directed mainly to its lower portions but with little or no gas directed to its upper portions thus forming a partial vacuum over the upper portions of the rotor vanes. When used, a water directing valve that directs water to the rotor vanes preferably has a curvilinear water contacting surface so that water will adhere to and follow that surface. The inherent structural strength of the rotor can be increased by a rotor ring that can ...

СПОСОБ СНИЖЕНИЯ ГИДРОДИНАМИЧЕСКОГО СОПРОТИВЛЕНИЯ КОРПУСА СУДНА И СКОРОСТНОЕ СУДНО С ИСПОЛЬЗОВАНИЕМ ДАННОГО СПОСОБА

FIELD: vessels and other watercrafts. SUBSTANCE: invention relates to shipbuilding, namely to high-speed displacement vessels moving on water surface and under water. Disclosed is a method of reducing hydrodynamic resistance of hull of ship by creating along longitudinal surfaces of ship hull active water flow by means of flowing jets from power jet propulsion plant by means of exhaust nozzles, arranged in the form of two-dimensional array on wetted surface of ship hull depending on hydrodynamic resistance of ship hull sections, at that, along the ship hull longitudinal recesses of the concaved section pairs located symmetrically to the diametral plane are made in the form of the oval surfaces articulated with the oval, wherein active water flow generated by flowing jets from exhaust nozzles from power jet unit inside longitudinal recesses of concave section, are swirled by tangentially escaping jets in direction of flow rotation or by means of helical blades installed in active water flow section. Disclosed also is a vessel using said method of reducing hydrodynamic resistance of housing. EFFECT: technical result consists in minimizing hydrodynamic resistance of moving ship and, as a result, increasing ship speed. 2 cl, 24 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 739 626 C1 (51) МПК B63B 1/34 (2006.01) B63B 1/32 (2006.01) B63H 11/02 (2006.01) B63H 11/103 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ На основании пункта 1 статьи 1366 части четвертой Гражданского кодекса Российской Федерации патентообладатель обязуется заключить договор об отчуждении патента на условиях, соответствующих установившейся практике, с любым гражданином Российской Федерации или российским юридическим лицом, кто первым изъявил такое желание и уведомил об этом патентообладателя и федеральный орган исполнительной власти по интеллектуальной собственности. (52) СПК (21)(22) Заявка: 2020111884, 23.03.2020 (24) Дата начала отсчета срока ...

Propellerpumpe fuer eine Wasserstrahl-Antriebsvorrichtung fuer Wasserfahrzeuge

WATER JET DRIVE EQUIPMENT.

Water Jet Propulsion System

Bei einem Wasserstrahlantrieb (1) für ein Wasserfahrzeug, mit einem Ansaugbereich (2), einem an den Ansaugbereich (2) anschließenden Impellerbereich (3), in welchem ein einstufiger Impeller (4) angeordnet ist, und einer, an den lmpellerbereich (3) anschließenden Austrittsdüse (5), wobei der Wasserstrahlantrieb ( 1) einen Antriebsmotor ( 6) aufweist, welcher wenigstens mittelbar mit einer lmpellerantriebswelle (7) des lmpellers (4) verbunden ist, wird vorgeschlagen, dass der lmpeller (4) lediglich ein einziges Schaufelblatt (8) aufweist.

VARIABLE MARINE JET PROPULSION

A variable marine jet propulsion system incorporates a motor (21), variable pitch propeller pump (50) in a spherical housing (62), a variable housing and a variable inlet duct, and a microcontroller (140). The pump, nozzle, and inlet are controlled by the microcontroller, which is programmed to control the pump as a continuously variable power transmission for maintaining efficient motor operation, the nozzle for maintaining efficient pump operation, and the inlet for maintaining efficient recovery of the total dynamic head of the incoming water. The spherical pump housing maintains close fits to the propeller vane tips for more efficient operation at all pitches, including zero and reverse pitches. Zero pitch results in no effective pumping action, effectively a true neutral in fluid power transmission. Reverse pitch in combination with the large variable nozzle provide reverse flow and consequently reverse thrust, which eliminates the need for a backing bucket.

WATER JET PROPULSION UNIT WITH COUNTER-ROTATING IMPELLERS

A water jet apparatus with counter-rotating impellers for propelling a boat. The impellers are coupled by an assembly comprising an impeller shaft secured to a first impeller and a gear train coupling the impeller shaft to a second impeller for counter-rotation. Preferably the gear train comprises one beveled gear secured to the impeller shaft, another beveled gear secured to the second impeller, and a beveled pinion meshed with the first and second beveled gears. The counter-rotating impellers can be driven by a drive shaft coupled to the first impeller for boats having an inboard motor or by a drive shaft coupled to the pinion for boats having an outboard motor.

ENTERED OF MOBILE SLOPE FOR SHIPS REACTION HAS

SYSTEM OF PROPULSION FOR SHIPS

Système de propulsion (1) pour navires comportant : - au moins une ouverture d'aspiration (2) de l'eau, ladite au moins une ouverture d'aspiration (2) étant agencée à proximité d'une étrave (3) d'un navire ; - au moins une conduite d'alimentation (4) en eau, ladite conduite d'alimentation (4) captant l'eau au niveau de ladite au moins une ouverture d'aspiration (2) et alimentant en eau un circuit propulseur (5) ; caractérisé en ce que ledit circuit propulseur (5) comporte un premier module (6) agencé hydrauliquement en amont d'un générateur d'électricité (7) utilisant la force de l'eau comme énergie motrice pour produire de l'électricité, ledit premier module (6) comportant : - une première tubulure conique (8) de base (9) fermée et de sommet (10) connecté hydrauliquement audit générateur d'électricité (7), ladite première tubulure conique (8) étant agencée coaxialement par rapport à un axe de rotation (11) des parties mobiles en rotation du générateur d'électricité (7) ; - au moins une ...

APPARATUS OF WATER SPURT

Un aparato de chorro de agua para impulsar vehículos en el agua que presenta una mayor eficiencia y un mejor mando. El sistema de chorro de aguautiliza barras voladizas para una rejilla de entrada, a los efectos de evitar el bloqueo. Elapa rato de chorro de agua también utiliza una carcaza del ejede propulsor elíptica para reducir la turbulencia y la obstruccion de desechos por el eje del propulsor en rotacion. El aparato de chorro de aguautiliza paletas de propulsor conun c orte transversal curvo, que se curva hacia la direccion de la rotacion delantera. El aparato de chorro de agua utilizapestanas con forma de U montadas a la salida del chorro de agua para proporcionar el mando.

Jet pump system for a water jet propelled boat

A jet pump system for a water jet propelled boat is disclosed that provides for the adjustment of the area of the water intake opening or the water entry angle as a function of the speed of the boat. During low speed operation, the water inlet opening is adjusted to a maximum area, or the water entry angle is adjusted to a maximum angle to enable sufficient water to enter the water duct and permit efficient impeller operation. As the boat speed increases beyond a predetermined speed, the water inlet area is reduced, or the water inlet angle is reduced to prevent excess water from entering the water duct, thereby reducing the drag on the boat.

Axial flow pump or marine propulsion device

A multistage axial-flow pumping or marine propulsion device having fixed or variable pitch stators between rotors. Stator vanes are designed to lower internal fluid speed without sacrificing total pressure as working fluid travels toward the discharge nozzle. A variable pitch stator controls the amount of energy, i.e., torque, imparted to the working fluid at successive rotor sections. A variable inlet guide vane provides throttling of mass flow rate independently of rotor speed. An exit guide vane provides flow straightening and pressure maintenance at the discharge nozzle. A variable area throat at the discharge nozzle controls the exit velocity of the water jet according to boat speed and/or desired propulsive efficiency. Advantageously, the device enables a shipmaster to set performance characteristics of a vessel at any desired speed, loading, horsepower setting, or operating characteristic of the power plant.

WATERJET PROPULSION UNIT

The invention aims to increase the efficiency of a waterjet propulsion unit with a jet tube, open at its upper and lower end and accommodating a rotating water propulsion means, and with in its outflow opening a rotatable grid of essentially mutual parallel guide plates which cross the axis of the propulsion means under an acute angle, in which a great power can be handled, in that the jet tube is surrounded at the outside of the inlet end by a guide surface having a spherically curved cross-section, and ends at the inlet end in a converging chamber of which two opposite walls an acute angle include with the axis of the propulsion means, said chamber carrying at the outflow end the grid of guide plates of which the plates are parallel with the horizontal end edges of said walls, the whole being rotable together with this grid around the axis of the propulsion means.

Sea going barge train

In the external electric drive propulsion module arrangement (10) described in the specification, two parallel propulsion units (26,28) are mounted in a housing (14) affixed beneath the stern (16) of a ship and having a surface contour conforming to the contour of the adjacent surface portions of the ship's hull. Each propulsion unit (26,28) is disposed substantially horizontally to provide maximum propulsion efficiency and has a rotating blade section (22) for driving water rearwardly from an inlet and a fixed blade section (24) following the rotating blade section. The inlet receives water from a wraparound array of screened intake openings (18) near the forward end of the module housing which draws in the surface boundary layer of the ship's hull. In addition, vertical vanes (30) are affixed to the stern of the ship to straighten the flow of water from the propulsion units.

ВОДОМЕТНЫЙ ДВИЖИТЕЛЬНО-РУЛЕВОЙ КОМПЛЕКС

FIELD: shipbuilding; development of water-jet propulsors with reverse steering complex. SUBSTANCE: proposed complex includes water duct, impeller with hub fairing mounted on shaft with bearings, straightening set and reverse steering unit with swivel deflector mounted after nozzle. Cross sections of nozzle have shape elongated in horizontal direction after inlet circular section of nozzle. Ratio of width to height is equal to 2:10. Profile of cross sections of impeller hub copies profile of cross sections of inner loop of nozzle. Straightening set is formed by nozzle walls, fairing and profiled struts. Reversible steering unit is provided with limiting plate and two drive rudders. Side walls of cross section of nozzle have form of part of circle after inlet circular section and upper and lower walls are limited by chords of segments. Circular shape of nozzle section changes to outlet section elongated horizontally. Profile of impeller fairing is transformed into horizontal line at nozzle outlet. Impeller hub fairing is secured to nozzle walls by means of four streamlined profiled struts. Side walls of deflector have through holes. Rudders have profile of straight-cheek wedges. One bearing of tail section of impeller shaft is made in form of supporting bearing and other bearing is made in form of thrust bearing; bearings are lubricated with water. EFFECT: reduced sizes of propulsor; enhanced efficiency; minimization of loads; facilitated procedure and enhanced ecological safety. 9 cl, 2 dwg 7119 0сс ПЧ ГЭ РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) ВИ” 2 205 774‘ 13) СЛ 5 М’ В 63 Н 11/08, 11/40, 11/103, 11/11 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 2002112283/28, 06.05.2002 (24) Дата начала действия патента: 06.05.2002 (46) Дата публикации: 10.06.2003 (56) Ссылки: ЗЦ 157611 А, 14.09.1963. $Ц 69683 А, 30.11.1947. КЦ 2178368 СЛ, 20.01.2002. СВ 1332187 А, 03.10.1973. 4$ 5871381 А, 16.02.1999. (98) Адрес для переписки: ...

Способ использования внутренней энергии тепловой струи воздушно-реактивного двигателя

FIELD: machine building.SUBSTANCE: invention relates to use of air-jet engines. Operation of air-jet engine is accompanied with powerful sucked-in air flow and powerful high-speed flow of high-temperature exhaust gas, having high internal energy. Incandescent exhaust gases from the nozzle have often not used internal energy due to high temperature, and this energy can be used for additional useful work. Proposed technical solution envisages use of these properties of air-jet engine for additional useful work, heating and for impact on external objects.EFFECT: technical result consists in using energy of heat jet of air-jet engine for additional useful work.3 cl, 11 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 728 937 C1 (51) МПК B63H 11/14 (2006.01) B63H 11/103 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК B63H 11/14 (2020.02); B63H 11/103 (2020.02) (21)(22) Заявка: 2019118269, 13.06.2019 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Соловьёв Петр Викторович (RU) Дата регистрации: 03.08.2020 Приоритет(ы): (22) Дата подачи заявки: 13.06.2019 (45) Опубликовано: 03.08.2020 Бюл. № 22 2 7 2 8 9 3 7 R U (54) Способ использования внутренней энергии тепловой струи воздушно-реактивного двигателя (57) Реферат: Изобретение относится к области совершения дополнительной полезной работы. использования воздушно-реактивных двигателей. Предлагаемое техническое решение Работа воздушно-реактивного двигателя предусматривает использование этих свойств сопровождается мощным всасываемым потоком воздушно-реактивного двигателя для совершения воздуха и мощным высокоскоростным потоком дополнительной полезной работы, обогрева и высокотемпературного выхлопного газа, для воздействия на внешние объекты. обладающего большой внутренней энергией. Технический результат заключается в Раскаленные выхлопные газы, истекшие из сопла, использовании энергии тепловой струи воздушнообладают часто не используемой ...

A water jet propulsion device having fluid injection nozzles

A water jet propulsion device having a duct with an inflatable portion

There is disclosed a water jet propulsion device 10 for a water vehicle, comprising a main duct 12 having a main inlet 14 that is arranged to be submerged in use and a main outlet 16. The device also comprises a pump disposed between the main inlet 14 and the main outlet 16 and an inflatable portion 32 disposed in a position such that the geometry of, or in the region of, the main duct can be altered by the inflation or deflation of the inflatable portion between at least a first configuration and a second configuration. The inflatable portion may form a part of an inclined upper wall 28 of the main duct or may form part of the duct lip 24.

Impulse-plus propulsion system

Water jet propulsion device

DUCTED CHANNEL WING, HIGH-LIFT DEVICES AND VEHICLES THEREFOR

VARIABLE MARINE JET PROPULSION

Underwater two phase ramjet engine

PROPELLING SYSTEM OF SMALL BOAT

A boat propelling system is mounted in a water channel of the boat hull and composed of an engine, a transmission shaft driven by the engine, an impeller driven by the transmission shaft and provided with blades, a stator mounted behind the impeller and provided with stator vanes, and a nozzle located behind the stator. The impeller blades and the stator vanes are separated by a gap adjustable by the magnitude of jet flow of water.

MOVABLE RAMP INLET FOR WATER JET PROPELLED SHIPS

INVENTORS VIRGIL E. JOHNSON, JR., ROBERT J. ETTER, HORTON W. LAIN, LARRY K. STEPHENS and PETER VAN DYKE TITLE MOVABLE RAMP INLET FOR WATER JET PROPELLED SHIPS ABSTRACT OF THE DISCLOSURE A movable ramp, forming part of the inlet flow channel of a water set propulsion system, is adjustable to provide variable inlet area for various speed and propulsion re-quirements. In this flush or semi-flush type inlet, the lower lip is stationary and an upper ramp, forming an extension of the base line shell, directs the flow into the inlet, If the baseline shell is not suited to the inlet installation, (for example, if a high deadrise angle exists) a forebody fairing is provided to make the baseline shell geometry suitable. The ramp is flexible, has a smooth sur-face, and is backed up by bell cranks and pusher bars that can move the ramp position to change the inlet area. The The ramp position or inlet area may be adjusted manually or automatically to meet the requirements of speed and propulsion. If the centerline of the lip leading edge radius falls below the normal baseline (semi-flush inlet) suitably shaped "sideplates" are provided to avoid inlet cavitation or ventilation at yawed conditions. A "pressure alleviatation" system may be provided to reduce the static pressure differential across the ramp to alleviate the structural design loading and reduce the total force re-quired of an actuator to move the ramp.

MOVABLE RAMP INLET FOR WATER JET PROPELLED SHIPS

SYSTEM OF PROPULSION FOR SHIPS

DEVICE OF PROPULSION HAS INERTIA CONDITIONNEE OF THE FLUID.

Trust device of farm management ship

The present invention relates to a trust device for a farm management ship, and more specifically, to a trust device for a farm management ship, which is possible to easily and smoothly enter a space between a plurality of strings at a place such as a laver farm by using an aluminum farm management ship and is possible to induce safe navigation by being improved so as to be possible to easily and smoothly perform berthing when being anchored or berthed at a dock.

SHIP

Disclosed is a ship in which a duct (100) is arranged through the lower portion of the hull such that the duct (100) connects a hull head portion to a hull tail portion disposed in front of a propeller (10). According to the present invention, relatively faster acceleration and change of direction are enabled by reducing resistance, and an auxiliary propeller (110) serves to relieve the burden on a main propeller (10) for generating thrust.

Waterjet propulsion system and method for a marine vehicle

A waterjet based propulsion system and method that utilizes more than one waterjet outlet port and controls the selective application of power to the waterjets with a splitter gearbox thereby improving the efficiency of the marine craft at low and high speeds.

Mixed-flow type water jet pump of watercraft and attaching structure thereof

A mixed-flow type water jet pump having configured so that a tip clearance between an inner wall of a pump casing and an outer peripheral edge of an impeller can easily be adjusted, and which can easily be mounted on a watercraft. A pump casing is divided into two portions, a front casing and a rear casing, in a longitudinal direction, the front casing for housing an impeller provided with a longitudinal position defined simply with respect to the rear casing and being attached to the rear casing through a shim such that a predetermined clearance is formed between an inner wall of the front casing and an outer peripheral edge of the impeller.

APPARATUS FOR WATER JET PROPULSION

Apparatus for water jet propulsion in which a screw propeller is integrally formed with a surrounding duct, which surrounding duct rotates with the screw propeller to eliminate blade-tip vortex. A duct comprised of alternately disposed movable and stationary segments, which movable elements are adjustably positioned to mate with the stationary segments to provide optionally either an intake duct with an optimum configuration to reduce cavitation or a discharge duct with an optimum configuration.

БЫСТРОХОДНОЕ СУДНО НА ВОЗДУШНОЙ КАВЕРНЕ

FIELD: shipbuilding. SUBSTANCE: invention relates to shipbuilding, particularly, to design of high-speed air cavern vehicle. Disclosed is a high-speed air cavern vehicle, having a housing, in which a bottom recess is made to form an artificial air cavity in the process of vessel motion. Top of the bottom recess arranged in ship hull nose is equipped with crosswise strake, in front of which bow-jet propeller is arranged, made in the form of two symmetric in form and location relative to diametral plane of ship hull of centrifugal pumps with outlets of slot-like nozzles of their outlet branch pipes located in vertical wall of crosswise strake and extending to all corresponding half of width of crosswise strake. EFFECT: technical result consists in improvement of operating characteristics of high-speed vessel on air cavern. 7 cl, 9 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 714 040 C1 (51) МПК B63B 1/38 (2006.01) B63B 1/34 (2006.01) B63H 11/08 (2006.01) B63H 11/103 (2006.01) B63H 5/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК B63B 1/38 (2019.08); B63B 1/34 (2019.08); B63H 11/08 (2019.08); B63H 11/103 (2019.08); B63H 5/00 (2019.08) (21)(22) Заявка: 2019119447, 20.06.2019 20.06.2019 (73) Патентообладатель(и): Павлов Геннадий Алексеевич (RU) Дата регистрации: 11.02.2020 (45) Опубликовано: 11.02.2020 Бюл. № 5 2 7 1 4 0 4 0 R U (54) БЫСТРОХОДНОЕ СУДНО НА ВОЗДУШНОЙ КАВЕРНЕ (57) Реферат: Изобретение относится к области форме и расположению относительно судостроения, в частности к конструкции диаметральной плоскости корпуса судна быстроходных судов на воздушной каверне. центробежных насосов с выпускными Предложено быстроходное судно на воздушной отверстиями щелевидных сопел своих выходных каверне, содержащее корпус, в котором патрубков, расположенными в вертикальной выполнена днищевая выемка для образования в стенке поперечного редана и простирающимися ней в процессе движения судна искусственной на всю ...

Water jet system with free-supporting booms for inlet grid

The water jet system has impeller blades with a bent cross-section which bend in the direction for forward movement. It has large U-shaped flanges fitted at water jet outlet for producing the control effect.

Waterjet propulsion apparatus

Vortex ring cushion device incorporating a raster scanning cone

A spun channel ribbed vortex raster scanning cone 32 placed in the exhaust flume 38 of a jet turbine propulsion unit produces enhanced lift in hover as it redirects exhaust air radially downwards adding spin. Said radial spun exhaust flume is directed alternately onto the inside and outside surfaces of a trailing vortex bisector cone 33 requiring few moving parts. Said raster scanning cone may be rotated electrically or mechanically to achieve interlaced and thrust spun vortex raster scanning to build up stable opposed-rotating concentric vortex ring pairs projected sequentially and in rapid succession. Radial vortex raster scanning and bisector cones may comprise recirculating or interlaced designs facilitating the use of a woven materials especially carbon fibre reinforced plastics CFRPs to compliment a woven in-line turbojet compressor turbine assembly forming part of a vortex ring cushion projector hover system VRCP. Said raster scanning cone may also be deployed in horizontal propulsion ...

Improvements in or relating to the propulsion of ships by waterjet reaction forces

... 1,105,488. Jet propulsion. SOCIETE GRENOBLOISE D'ETUDES ET D'APPLICATIONS HYDRAULIQUES (Sogreah). 15 March, 1965 [17 March, 1964], No. 10845/65. Heading B7V. A device for regulating the speed of ships powered 'by a reaction propulsion system in which a pump discharges water into an outlet jet comprises means to vary the rotational speed of the pump, means to vary the shape of the outlet jet so as to modify the propulsion thrust of the system and means to relate the two aforesaid varying means so as to achieve optimum operating conditions. The instrumentation may be mechanical, electrical, electronic, hydraulic, pneumatic or of any conventional type and may be automatically or manually controlled. In the case of manual control the operator adjusts the pump speed or the jet cross-section on reading the predetermined curve or indicator chart. Under automatic control an automatic regulator works out the optimum value of the quantity to be adjusted.

Outboard motor of jet propulsion

ИМПЕЛЛЕР ДЛЯ ТРАНСПОРТНОГО СРЕДСТВА

Полезная модель относится преимущественно к судостроению, в частности к водометным движителям. Техническим результатом предлагаемой полезной модели является повышение коэффициента полезного действия импеллера для транспортного средства. Технический результат достигается тем, что подшипник установлен между корпусом транспортного средства и внешней стороной полого цилиндра, а лопасти непосредственно зафеплены исключительно на внутренней стороне полого цилиндра. Привод импеллера может производиться посредством зубчатого колеса на торцевой части полого цилиндра импеллера. Указанное выполнение привода легко реализуется и не снижает коэффициента полезного действия импеллера, так как не вносит дополнительного препятствия потоку. Технический результат - повышение коэффициента полезного действия обусловлен минимизацией механических помех потоку жидкости или воды. С потоком жидкости или воздуха взаимодействуют только лопасти, корпус судна и небольшая часть полого цилиндра. Полезная модель может быть ...

AXIAL FLOW PUMP AND MARINE PROPULSION DEVICE

A mechanically reconfigurable marine propulsion device (10) that adapts to engine torque and/or vessel speed thereby providing improved propulsive efficiency and performance. The axial flow propulsion device has two or more stages each having an impeller section and a stator section. Stator vanes (40, 42, 44) and/or the pumping chamber (19) provide a flow diffusion that generates increased hydrostatic pressure from ram pressure recovered from high velocity working fluid which, due to reduced fluid velocity and increased hydrostatic pressure, lowers cavitation events and frictional losses within the propulsion device. Optionally, variable-pitch vanes (80, 82) in the stator section control the amount of ram pressure imparted to the working fluid. Also optionally, variable-pitch inlet guide vanes (46) control the whirl angle and/or mass flow rate of incoming fluid independently of rotor or vessel speed. A set of fixed or variable exit guide vanes aft of the pumping chamber provides flow straightening.

SHIP DRIVEN BY INBOARD ENGINES AND WATER JETS

A ship which is driven by inboard engines with propellers (3) and by water jets (1) producing jets of water (7). The inboard engines (2) are embodied in the form of electric motors and the water jets (1) are used underneath the bottom of the ship. The electric inboard engines are accommodated in skegs (10) on the underside of the ship. A flow channel is formed between the skegs (10) for the jets of water (7) emitted by the water jets (1).

Chambered anti-Coanda jet marine propulsion device with gaseous boundary layer for a thrust jet flow stream exhibiting staged controlled boundary layer separation properties, vessel trim adjustment, and movable thrust vector application points(s)

A marine propulsion system for use as a driving means and a progressive hull resistance characteristic changing means is herein described. The drive can develop a separation of the jet water stream flow field from the vessel hull, as well as separate the supporting ocean water flow field from the hull. The jet system air cavity doors also act as trim planes and hull planing (hydrodynamic) surface structures, and as thrust vector application control valves (in this capacity, they have the capacity to reduce drag . . . and make a vessel go faster, as well as increase it . . . by varying Coanda effect and hull plate fluid friction). The unit can be used in conjunction with an automated controlling device (such as a computerized control linked to servo motors, feedback potentiometers, and linkages) wherein a specific power-up and power-down sequence can be followed in response to sensor information. It can allow the placement of a jet pump lower in the vessel, thus reducing suction lift and ...

SMALL JET PROPULSIVE BOAT

PURPOSE: To certainly prevent the suction of air to an impeller by branching and connecting a duct in which the impeller is disposed to sub-water sucking holes on both lateral sides of a hull, disposing selector valves on the sub-water sucking holes, respectively, and closing the selector valve on the turning outside at the time of suddenly turning a boat body. CONSTITUTION: When a steering handle 14 is operated to the left at the time of suddenly turning a jet propulsive boat, for example on the left hand, and the weight of a driver is also applied to the left, a left-handed sub-water sucking hole 22a is submerged since a boat body 10 is inclined left, and a right-handed sub-water sucking hole 22b is raised up on the water surface. The left inclination is detected by a gyro sensor 45, and the opening of a throttle valve is detected by a throttle sensor 46. When each detected value is a determined value or more, a left-handed DC motor is driven by a valve drive control unit not shown to ...

Propulsionsmittel für Fluggeräte oder Schiffe

Water jet propulsion apparatus

... 1,087,799. Marine Jet-propulsion apparatus. TAMCO Ltd. Dec. 30, 1964 [Feb. 14, 1964], No. 39838/66. Divided out of 1,087,797. Heading B7V. The subject-matter of this Specification is substantially the same as that described in the parent Specification, but the claims mainly concern jet-propulsion apparatus comprising water intake means constituted by ducting, which includes a plurality of separate passages.

Liquid jet propulsion outboard motor

... 877,982. Jet propulsion outboard motors. MECCANICA GARELLI S.p.A. Jan. 22, 1960 [Jan. 23, 1959(3); Nov. 26, 1959], No. 2503/60. Class 114. [Also in Group XXVI] An outboard jet propulsion unit comprises an I.C. engine 10 which drives, via the shaft 14, an impeller 30 of a centrifugal pump having an inlet 36 and outlets 311 and 3111. The shaft 14 is arranged within a column 15 which is secured to the engine and underwater shrouds 11, 20 and 21 and is rotatable in the support 16. The column 15 serves as an exhaust conduit for the I.C. engine, connecting at its lower end with the chamber 23 and outlet 24. A tube 55 is arranged within the column 15 to form a clearance 40 which is open at the top to the interior of the column 15 and connected at the bottom with the pump casing 13 via a conduit 43, so that in operation the clearance 40 acts as a cooling jacket for the support 16.

WATER JET PROPULSION APPARATUS

To sufficiently reduce a rotation component of a water stream very close to the external face of a cap 34 of a bearing, reduce the size of the cap 34, and make positioning between the cap 34 and another stationary vane 31c1 unnecessary. In a water jet propulsion apparatus having a duct 31 forming a channel, an impeller 32 disposed in the duct 31, a bearing 33 of the impeller 32 provided in the duct 31, and a cap 34 closing the rear end of the bearing 33, stream straightening grooves 34a are formed in the external face of the cap 34. In a portion facing the cap 34, in the internal face of the duct 31, a stationary vane 31c1 is formed toward the cap 34.

WATER JET PROPULSION APPARATUS

DISPOSITIF DE PROPULSION A INERTIE CONDITIONNEE DU FLUIDE.

Dispositif de propulsion à inertie conditionnée du fluide : propulsion, gouverne, moyens évolutifs de navires et engins dans un fluide, pompage. Un organe de centrifugation 2 crée un fluide aux propriétés intenses, homogènes, réglables. Une voilure 3, principalement un cylindre porteurs intérieurement d'ailettes de décentrifugation, exploite cette énergie relai qu'est le fluide centrifugé pour produire la poussée ou le pompage. En 4 le jet. Econome par cet artifice en remous et frottements et pertes d'énergie en général, le dispositif est performant, s'accomode de grandes vitesses de rotation, est peu dangereux, peu vulnérable. (CF DESSIN DANS BOPI) ...

VARIABLE MARINE JET PROPULSION

A variable marine jet propulsion system incorporates a motor (21), variable pitch propeller pump (50) in a spherical housing (62), a variable housing and a variable inlet duct, and a microcontroller (140). The pump, nozzle, and inlet are controlled by the microcontroller, which is programmed to control the pump as a continuously variable power transmission for maintaining efficient motor operation, the nozzle for maintaining efficient pump operation, and the inlet for maintaining efficient recovery of the total dynamic head of the incoming water. The spherical pump housing maintains close fits to the propeller vane tips for more efficient operation at all pitches, including zero and reverse pitches. Zero pitch results in no effective pumping action, effectively a true neutral in fluid power transmission. Reverse pitch in combination with the large variable nozzle provide reverse flow and consequently reverse thrust, which eliminates the need for a backing bucket.

DEVICE FOR MOVING A WATERCRAFT

A device for moving a watercraft comprises: —at least one propulsion chamber having a first inlet section for a liquid, referred to as the upstream edge, and a second outlet section for the liquid, referred to as the downstream edge; at least one flexible membrane housed in the chamber; and at least one actuator configured to produce thrust from the watercraft through undulation of the membrane between the upstream edge and the downstream edge.

Water jet propulsion device

Water jet propulsion apparatus

... 1,087,798. Marine Jet-propulsion apparatus. TAMCO Ltd. Dec. 30, 1964 [Feb. 14, 1964], No. 39837/66. Divided out of 1,087,797. Heading B7V. The subject-matter of this Specification is substantially the same as that described in the parent Specification, but the claims mainly concern jet-propulsion apparatus comprising means for rotating the nozzle so as to vary the direction of the jet and effect steering of the watercraft.

Water jet propulsion apparatus

... 1,087,800. Marine Jet-propulsion apparatus. TAMCO Ltd. Dec. 30, 1964 [Feb. 14, 1964], No. 41033/66. Divided out of 1,087,797. Heading B7V. The subject-matter of this Specification is substantially the same as a part of that described in the parent Specification, but the claims mainly concern jet-propulsion apparatus comprising weed-cutting means at the inlet or upstream end of the water intake means.

Water jet propulsion device

There is provided a water jet propulsion device 10 for a water vehicle, comprising a main duct 12 having a main inlet 14 that is arranged to be submerged in use and a main outlet 16 ; a pump disposed between the main inlet 14 and the main outlet 16 ; and a plurality of injection nozzles 40, 50, 60, 70 each arranged to selectively eject a jet of fluid into a different region A, B, C, D susceptible to cavitation, so as to re-energise the fluid flow in that region.

Multi-axis water jet propulsion using coanda effect valves

A propulsion system is provided that includes one or more pumps that form a jet for propulsion. A number of Coanda jet devices (CJDs) are coupled to the one or more pumps. The CJDs are arranged so to allow for a multi-axis underwater control of an underwater robot.

Duct arrangement

A duct arrangement 18 for a waterjet propulsor 10 . The duct arrangement 18 comprises a main duct 30 having an inlet 20 . The inlet 20 has an elongate main portion 32 extending along a principal axis 34 , and at least one lateral portion 36 in fluid communication with the main portion 34 . The at least one lateral portion 36 extends part way only along the length of the main portion 34.

WATER PUMP FOR WATERCRAFT

A self-propelling watercraft system is provided. The watercraft has a base with a plurality of sidewalls extending from the base to form a cockpit. The base also has a recess, where a pump can detachably connect to the hull within the recess. The pump has an intake valve on a first end and a nozzle on a second end that is opposite the first end. The intake valve can intake water. The nozzle can jettison water received in the pump from the intake valve and agitate water surrounding the nozzle. 1. (canceled)2. A self-propelling watercraft system , comprising: a base, the base having a recess, and', 'a plurality of sidewalls extending from the base to form a cockpit; and, 'a hull comprising a water intake port on a first face of the pump system;', 'a water exhaust port on a second face of the pump system, the first face approximately perpendicular to the second face, the water intake port and the water exhaust port together part of a water flow path through the pump system;', 'a grate formed over the water intake port;', 'a drybox housing an electric motor, an electric motor drive with a plate placed between the electric motor and the electric motor drive, a motor side pulley mechanically connected to the electric motor drive, a belt drive and a drive shaft side pulley; and, 'a pump system detachably connected to the hull and positioned within the recess, the pump system comprisinga paddle including a control mechanism for electronically communicating with the pump system.3. The self-propelling watercraft system of claim 2 , wherein the pump system extending from the recess of the hull extends no more than one inch from the base of the hull.4. The self-propelling watercraft system of claim 3 , wherein the pump system extending from the recess is substantially flush with the base of the hull.5. A self-propelling watercraft system claim 3 , comprising:a pump configured to connect to a scupper hole of a watercraft such that the connection between the pump and the scupper ...

RECUPERATIVE JET DRIVE

A method and device is provided for increasing the efficiency of jet drives by recuperating effective power from the propulsion flow. A ducted propeller in the propeller housing, driven by a driving engine via a drive shaft, conveys the fluid for the jet drive out of the interior Vof a radial turbine . The fluid is accelerated axially and ejected backwards against the direction of travel. This creates thrust. Because the pressure in the interior of the turbine decreases, new fluid from the environment flows directly via the blades of the rotating radial turbine from the outside to the inside, thereby driving them. A guide apparatus is missing. The power of the radial turbine is transmitted via a transmission to the drive shaft of the propeller, which relieves the driving engine and increases the efficiency of the jet drive. The invention is particularly suitable for electric drives. 15491646662149. Method for increasing the efficiency of jet drives by recuperating effective power from the propulsion flow , characterized in that in the propeller housing () a ducted propeller () , driven by a driving engine () via a drive shaft () , conveys the fluid for the jet drive from the interior Vof a radial turbine () , in that the propeller () accelerates this fluid axially and ejects it backwards against the direction of travel , in that new fluid from the environment flows from the outside to the inside directly via the blades of the rotating radial turbine () without a guide apparatus and thereby drives said radial turbine () , and in that the power of the radial turbine () is transmitted via a transmission () to the drive shaft () of the propeller () , which relieves the driving engine ().2. Method according to claim 1 , characterized in that the fluid is air.3. Method according to claim 1 , characterized in that the fluid is water.461011. Method according to claim 1 , characterized in that part of the power from the radial turbine () is given directly to an open rotor () ...

WATERJET PROPULSION SYSTEM AND WATERCRAFT HAVING A WATERJET PROPULSION SYSTEM

The invention relates to a waterjet propulsion system () for a watercraft, comprising an intake region (), an impeller region () which adjoins the intake region and in which a one-stage impeller () is mounted, and an outlet nozzle () which adjoins the impeller region, the waterjet propulsion system having a drive motor () which is at least indirectly connected to an impeller driveshaft () of the impeller (). According to the invention, the impeller has only one single blade (). 126.-. (canceled)27. A waterjet propulsion drive for a watercraft , comprising:an intake region;an impeller region adjoining the intake region;a single-stage impeller arranged in the impeller region and including an impeller drive shaft, said impeller including only one single blade;an outlet nozzle at least indirectly adjoining the impeller region; anda drive motor connected at least indirectly to the impeller drive shaft of the impeller, said drive motor embodied as an electric motor,wherein both the intake region and the outlet nozzle are formed in a drive-shaft-free manner.28. The waterjet propulsion drive of claim 27 , wherein the impeller region is configured as a combined axial/radial pump.29. The waterjet propulsion drive of claim 27 , wherein the blade has a base body and is configured as a substantially conical spiral arranged about the blade base body.30. The waterjet propulsion drive of claim 27 , wherein the blade is predeterminably curved in a direction of the intake region.31. The waterjet propulsion drive of claim 29 , wherein the blade tapers away from the base body.32. The waterjet propulsion drive of claim 29 , wherein the blade is guided more than once around the blade base body.33. The waterjet propulsion drive of claim 29 , wherein the blade base body is configured as a substantially rotationally symmetrical base body with a concave jacket surface.34. The waterjet propulsion drive of claim 27 , wherein the impeller includes an impeller housing having an impeller housing ...

UNDERWATER PROPULSION DEVICE AND UNDERWATER SEARCH DEVICE

An underwater propulsion apparatus according to an embodiment includes a main body having a conical tail portion, a channel having an inlet in the outer circumferential surface of the main body and a nozzle on the side downstream of the inlet and in the tail portion, at least one pump having an impeller provided in the channel , a diffuser attached to the main body so as to surround the outer circumference of the nozzle , and a plurality of direction control wings attached to the outer surface of the main body and located in positions downstream of the nozzle and close thereto, each of the plurality of direction control wings having an upstream end pivotally supported by the main body 1. An underwater propulsion apparatus comprising:a main body;at least one pump having a channel and an impeller provided in the channel, the channel having an inlet in an outer circumferential surface of the main body and a nozzle on a side downstream of the inlet and in a tail portion of the main body; anda plurality of direction control wings attached to an outer surface of the main body and located in positions downstream of the nozzle and close thereto, each of the plurality of direction control wings having an upstream end pivotally supported by the main body.2. The underwater propulsion apparatus according to claim 1 , further comprising a diffuser attached to the main body so as to surround an outer circumference of the nozzle.3. The underwater propulsion apparatus according to claim 2 , wherein the diffuser is provided with a first entrained flow introducing channel that passes through the diffuser and introduces water flow flowing along an outer side of the diffuser into a propulsion channel sandwiched between the diffuser and the direction control wings.4. The underwater propulsion apparatus according to claim 2 , wherein an outer surface of a downstream end portion of the diffuser is provided with a plurality of first entrained flow introducing grooves that extend from an ...

Hydroplane

一种滑行快艇，具有一个船壳，设有一个船底升起的底部和可延伸的阻流板，和设有喷水发动机推进装置，设在船尾，发动机的进水口安排在船底在阻流板的前面。在阻流板伸出时航行，紧靠阻流板的前面产生一个压力增加区域，该区域包括进水口，允许在高压下吸入水，增加了喷水发动机的工作效率。艇还可设前阻流板，而底部可包括后和前横向滑行台阶，阻流板位于台阶后面。在这种情形下，底部船底升起角在前台阶处为6-12°及在后台阶处为0-6°。

Ship propulsion device

(57)【要約】 本発明は、ロータ４６が少なくともその大部分が構造体５４によって囲まれており、ロータは、少なくとも大分部の下部で水を受け、少なくとも上部の一部でガスを受ける。ガス流を水をロータ翼５２に向けるバルブ４８により遮断することが可能であり、また、好ましくは、水が表面に沿って流れるように曲線状の水との接触表面を持つ。ロータの強度はロータリング４７により増加され、ロータリングは隣接するハウジングの凹所５３内に挿入されて水の抵抗を小さくしている。船舶推進装置のための操舵・逆進システムがまた与えれれている。それは、逆進案内翼４４と連結される方向舵４５を含み、逆進時に、方向舵の動きが放出流をともに引き起す。水偏向フラップ５１がオプションとして設けられ、高速で走行しているとき逆進案内翼又はノズルからの水を偏向する。

Water jet propulsion unit used for waterborne craft

(57)【要約】 それぞれ上流側ポンプハウジングと下流側ポンプハウジングに配置され、同軸のシャフト（２，３）に取り付けられた２つの逆回転する羽根車（５，６）を備えるウォーターボーンクラフトに用いるウォータージェット推進ユニット。折り畳み式スカートに取付けたバネの形で圧力制御プラミング装置（１０）が羽根車（５，６）の間に配置される。下流側ポンプハウジングの圧力は、空気取入口（１１）を介し空気が流入制御されることにより大気圧に維持可能である。

Waterjet propulsion system and method for a marine vehicle

A waterjet based propulsion system and method that utilizes more than one waterjet outlet port and controls the selective application of power to the waterjets with a splitter gearbox thereby improving the efficiency of the marine craft at low and high speeds.

Device for moving a watercraft

La présente description concerne le domaine maritime. En particulier, il est décrit un dispositif de déplacement (100) pour véhicule nautique, ledit dispositif comprenant : - au moins une chambre de propulsion (50) comprenant une première section d’entrée d’un liquide, dit bord amont (50a), et une deuxième section de sortie dudit liquide, dit bord aval (50b);- au moins une membrane flexible (M1) logée dans ladite chambre ; et- au moins un actionneur (A1) configuré pour générer une poussée dudit véhicule par une mise en ondulation de la membrane entre le bord amont et le bord aval Figure de l’abrégé : Figure 1 This description relates to the maritime domain. In particular, there is described a displacement device (100) for a watercraft, said device comprising: - at least one propulsion chamber (50) comprising a first inlet section for a liquid, said upstream edge (50a), and a second outlet section of said liquid, said downstream edge (50b); - at least one flexible membrane (M1) housed in said chamber; and- at least one actuator (A1) configured to generate a thrust of said vehicle by waving the membrane between the upstream edge and the downstream edge Figure of the abstract: Figure 1

Jet engine powered boats

Device for moving a watercraft

The present description relates to the maritime sector. In particular, the invention relates to a device (100) for moving a watercraft, the device comprising: - at least one propulsion chamber (50) comprising a first inlet section for a liquid, referred to as the upstream edge (50a), and a second outlet section for the liquid, referred to as the downstream edge (50b); - at least one flexible membrane (M1) housed in the chamber; and - at least one actuator (A1) configured to produce thrust from the vehicle through corrugation of the membrane between the upstream edge and the downstream edge.

Propulsion device with conditioned inertia

A hydraulic jet propelling apparatus has an inlet opening at one end and an outlet opening at the opposite end for a fluid passing therethrough. Between the inlet and outlet openings, a centrifugal accelerator member defines a divergent annular passageway for the fluid, with a frusto-conical external sleeve and a frusto-conical central vaned rotor member keyed together on a driving shaft. A stationary cup shaped wall projects from an outlet of the accelerator member, an internal face of which, seen in axial section, having a curvature variable from the outlet of the accelerator member to define at an outer end thereof a straight direction substantially axial to said internal face. The internal face being provided with a plurality of vanes for guiding and progressively changing direction of the accelerated fluid from a diverging and rotative trajectory when leaving the accelerator member to a trajectory parallel to the straight direction when leaving the wall.

Wind-Water Machine Set

A wind-water machine set is an evolving jet machine that moves the internal engine to the outside of the sleeve to work, instead of using a water jet as the main and air-jet as the auxiliary. When a ship uses multiple groups of wind-water machine set, there is a master control center for overall control and coordinated operation. Controlling the propulsion system makes the ship move forward and backward in an orderly manner. Control the surfing system to eliminate the bow water resistance and cooperate with the propulsion system. The steering control system is controlled to make the ship easy to operate the steering. Control the balance system to keep the ship balanced without swaying the roll angle. Control the draught system so that ships do not need ballast water. So that the ship can sail at super high speed, super fuel-efficient and safe.

Water jet propulsion ship

【課題】船舶の航走時に船首部の推進抵抗が少なく、安定した航走が得られるように、大型船舶が高速運行する場合でも効率的な推力を得ることが可能となるウォータージェット推進船を提供する。 【解決手段】船首１部の喫水線２の下部に開口する取水口３から導水管４内に外部海水を吸い込んで取り入れて導水管４から真空タンク室５に導入し、真空タンク室５に内蔵された水中ポンプ６により加圧したのちこれを船尾７部の放出口８から後方へ放出して推力を得て推進するウォータージェットによる推進船であって、真空タンク室５は喫水線２より高位にある内水位９と真空ゾーン１０とがあって、真空タンク室５の真空ゾーン１０には開閉バルブ１１が挿入されたサクションパイプ１２の一方端が接続され、サクションパイプ１２の他方端は真空ポンプ１３に接続されているウォータージェット推進船である。 【選択図】 図１

A kind of high anti-cavitation water jet propulsion pump of wheel rim aperture

本发明公开了一种叶轮轮缘开孔的高抗汽蚀喷水推进泵，包括吸水弯管、吸入直管、叶轮、导叶、喷嘴、导叶尾椎以及主轴，吸水弯管的出口连接吸入直管入口，吸入直管出口与叶轮入口连接，叶轮的出口依次连接导叶和喷嘴，导叶尾椎连接在导叶尾部，叶轮通过键固定在主轴上；叶轮叶片的叶轮叶片轮缘处的叶轮外壁上设有叶轮轮缘开孔。叶轮轮缘开孔为叶轮叶片轮缘处叶轮外壁面轮缘开孔，叶轮轮缘开孔的形状为轴面流道按转轴旋转扫掠而成的环状流道。本发明通过轮缘开孔将叶轮轮缘处的局部高压流体引导至叶轮叶片前缘靠轮缘处，使叶轮叶片进口区域压力增加，抑制空化产生，解决了高速高效喷水推进泵高抗汽蚀问题，同时该结构满足喷泵设计空间限制。

Driving mechanism for fast watercraft

Variable geometry jet for jet drive

The jet has an outer jet (5) through the casing of the jet drive, and a variable-geometry jet with one or more jets in the interior which can be moved axially relative to the outer jet. The form of the cross section of the inner jets in the rest position corresponds to the run of the flow lines, so that resistance is only increased by friction against the inner jets.

Foldable boat with detachable propeller device

본 발명은, 선미모듈(2)의 저면 중앙 부위에는 하방 및 후방 각각이 개구되어 선미모듈(2)의 후측벽(25)까지 일정 길이 연장되는 직육면체 구조의 삽입홈(24)이 마련되며; 선미모듈(2)의 삽입홈(24)에는 동력추진체(40)가 착탈식으로 장착되고; 덮개판(26)의 개구부(262)에는 동력추진체(40)와 전기적으로 연결되는 조작패널(50)이 착탈식으로 장착되며; 동력추진체(40)의 후방 일측에는, 방향타(62)의 하단 부위는 저면판(425)의 제1관통공(428)에 삽입되고, 방향타(62)의 상측 부위는 상기 선미모듈(2)의 후측벽(25) 상단 중앙 부위에 형성되는 제2관통공(28)에 삽입되는 방향조절수단(60)이 착탈식으로 장착되는; 것을 특징으로 하는 탈착식 동력추진장치를 적용한 접이식 보트를 제공한다. The present invention is characterized in that the stern module 2 is provided with an insertion groove 24 having a rectangular parallelepiped structure extending down to a rear wall 25 of the aft module 2 by a predetermined length, A power propellant (40) is detachably mounted in the insertion groove (24) of the stern module (2); An operation panel 50 electrically connected to the power propellant 40 is detachably mounted in the opening 262 of the cover plate 26; The lower end portion of the rudder 62 is inserted into the first through hole 428 of the bottom plate 425 and the upper portion of the rudder 62 is inserted into the first through hole 428 of the stern module 2 A direction adjusting means (60) inserted in a second through hole (28) formed in the upper central portion of the rear wall (25) is detachably mounted; The present invention provides a folding boat to which a detachable power propulsion device is applied.

Beam jet propellor

Jet propulsion trim and reverse system

A watercraft has a jet pump and a venturi. A variable trim system (VTS) support and a reverse gate are rotationally mounted relative to the venturi. A steering nozzle is rotationally mounted to the VTS support. A rotary actuator has an output portion operatively connected to at least one of the VTS support and the reverse gate. Rotation of the output portion between a first angle and a second angle causes a rotation of the VTS support while the reverse gate remains in a stowed position relative to the steering nozzle. Rotation of the output portion between the second angle and a third angle causes a rotation of the reverse gate between the stowed position and a second position while the VTS support remains in a fixed position. A jet propulsion system and a method of operating a jet propulsion system are also disclosed.

Jet pump tail cone insert

The present disclosure relates to a jet pump tail cone insert for a jet pump. The jet pump tail cone insert comprises a cap, a body and an end member. The end member has a plurality of projections configured to matingly receive a plurality of forks of the body. When connected together, the body and the end member have a plurality of receivers configured to receive stator vanes of a bearing hub of the jet pump. The body and the end member are configured to be proximate the stator vanes. The cap is configured to matingly couple to the body. The jet pump tail cone insert encompasses a portion of the bearing hub of the jet pump. The jet pump tail cone insert occupies within the bearing hub thereby increasing a flow rate of water through the jet pump.

Inboard propulsion system for a boat

An inboard propulsion system for a boat utilizing a water jet propulsion characterized by a pair of spaced nozzles each provided with individually controlled deflecting hoods to enable providing both a reverse thrust for backing the boat and to selectively reverse the water jet of a single nozzle to provide a turning force for steering the boat. Preferably, each of the nozzles is provided with a servo system which varies the effective opening of the nozzle in response to changes in the pressure differential between the intake pressure to the main impeller unit and the discharge pressure of the impeller unit to attempt to maintain a constant quantity flow from the nozzles independent or regardless of any variations in the intake pressure of the impeller unit.

Axial flow pump or marine propulsion device

A multistage axial-flow pumping or marine propulsion device having fixed or variable pitch stators between rotors. Stator vanes are designed to lower internal fluid speed without sacrificing total pressure as working fluid travels toward the discharge nozzle. A variable pitch stator controls the amount of energy, i.e., torque, imparted to the working fluid at successive rotor sections. A variable inlet guide vane provides throttling of mass flow rate independently of rotor speed. An exit guide vane provides flow straightening and pressure maintenance at the discharge nozzle. A variable area throat at the discharge nozzle controls the exit velocity of the water jet according to boat speed and/or desired propulsive efficiency. Advantageously, the device enables a shipmaster to set performance characteristics of a vessel at any desired speed, loading, horsepower setting, or operating characteristic of the power plant.

DYNAMIC RELEASE FLUID PROPELLER NOZZLE

L’invention concerne une tuyère (1 ; 50 ; 70) soutenant l'action d'un propulseur de fluide en agissant de manière directe sur le fluide, notamment grâce à une surface interne comprenant sur sa portion amont : au moins une portion de surface divergente (6 ; 13 ; 58 ; 78) par rapport à la direction aval-amont du courant généré par le propulseur ; au moins une inflexion de la surface (7 ; 53 ; 71), c'est à dire un changement brusque de l'orientation de la surface (sans qu'il n'y ait nécessairement de changement de signe dans la concavité), de manière à ce que la tuyère présente au moins une arête (5) sur la surface interne de sa portion amont (6 ; 78), et de manière à ce que que la portion juste en amont (13 ; 58) de ladite inflexion (7 ; 53) ait une divergence par rapport à la direction aval (12) – amont (11) plus importante que la portion juste en aval de ladite inflexion. Figure pour l'abrégé : Figure 1. The invention relates to a nozzle (1; 50; 70) supporting the action of a fluid propellant by acting directly on the fluid, in particular thanks to an internal surface comprising on its upstream portion: at least one surface portion divergent (6; 13; 58; 78) with respect to the downstream-upstream direction of the current generated by the thruster; at least one inflection of the surface (7; 53; 71), i.e. a sudden change in the orientation of the surface (without there necessarily being a change of sign in the concavity), of so that the nozzle has at least one ridge (5) on the inner surface of its upstream portion (6; 78), and so that the portion just upstream (13; 58) of said inflection (7 53) has a divergence with respect to the direction downstream (12) - upstream (11) greater than the portion just downstream of said inflection. Figure for abstract: Figure 1.

Water jet propulsion system for watercraft

본 발명은 선속을 증가시키기 위한 추진수단이 구성된 선박용 워터제트장치에 관한 것으로서, 더욱 상세하게는 임펠러케이스의 어느 일측에 추진수단을 구성하여, 임펠러의 회전력에 의해 물의 분사력과 더불어 압축공기의 제공으로 선속의 속도를 증가시켰고, 또한 추진수단의 추진력 추가로 종래와 비교하여 동일한 출력을 가지면서 임펠러에 회전력을 인가하는 엔진의 출력을 저감시킴으로 상기 엔진의 화석연료 사용량 저감 및 엔진의 사용수명을 증가시킨 친환경적이면서 제품경쟁력을 강화하는 선속을 증가시키기 위한 추진수단이 구성된 선박용 워터제트장치에 관한 것이다. 이를 위해 본 발명은 엔진의 회전력으로 회전하는 임펠러에 의해 물을 흡수하여 이를 끝단의 노즐을 통해 분사하는 추진력에 의해 선박을 운항하도록 하는 워터제트장치에 있어서, 상기 워터제트장치의 어느 일측에는 임펠러에 의해 흡입되는 물의 유속을 증가시키도록 외부의 공기를 흡기하는 흡기관이 구성된 추진수단;을 포함하는 것을 특징으로 한다. The present invention relates to a water jet apparatus for ships configured with a propulsion means for increasing the ship speed, and more particularly, by providing a propulsion means on any one side of the impeller case, by providing the compressed air with the injection force of the water by the rotational force of the impeller The speed of the ship is increased, and the thrust force of the propulsion means is reduced, and the output of the engine applying the rotational force to the impeller while having the same output as compared with the conventional method is reduced, thereby reducing the use of fossil fuel of the engine and increasing the service life of the engine. The present invention relates to a marine water jet apparatus configured with propulsion means for increasing ship speed, which is environmentally friendly and enhances product competitiveness. To this end, the present invention is a water jet apparatus for absorbing water by the impeller rotating by the rotational force of the engine to operate the ship by the propulsion force to spray it through the nozzle of the end, in any one side of the water jet apparatus to the impeller It is characterized in that it comprises a; propulsion means is configured intake pipe for taking in the outside air to increase the flow rate of the water sucked by.

Water jet propulsion apparatus

Water jet propulsion apparatus

A water jet propulsion apparatus having a duct forming a channel, an impeller disposed in the duct, a bearing of the impeller provided in the duct, and a cap closing the rear end of the bearing. In addition, at least one stream-straightening groove is formed in an external face of the cap. In the internal face of the duct, a stationary vane is formed in a portion facing toward the cap. Accordingly, a rotational component of a water stream close to the external face of a cap the bearing is substantially reduced, the size of the cap may be reduced, and cap position is not controlled by the position of the stationary vane.

Water jet propulsion device

High-speed vessel powered by at least one water jet propulsion system without exhaust gas trail

A propulsion system for a large watercraft, e.g., for a high-speed, military surface craft, includes at least one water jet propulsion device (water jet) beneath the vessel. An operating method of such a system includes propulsive energy by combustion engines, e.g., gas turbines, and distributing the exhaust gases created by the combustion engines beneath the vessel in the water by the use of water flow of the water jet system. In such a method, the water flow speed of the water jet system is adjusted in accordance with the requirements of exhaust gas discharge and distribution.

Device for moving a ship

本说明书涉及海事部门。特别地，本发明涉及一种用于移动船舶的设备(100)，该设备包括：‑至少一个推进室(50)，其包括用于液体的被称为上游边缘(50a)的第一入口截面，以及用于该液体的被称为下游边缘(50b)的第二出口截面；‑至少一个柔性膜(M1)，其被容纳在室中；‑至少一个致动器(A1)，其被配置为通过膜在上游边缘与下游边缘之间的波动从载具产生推力。

Drive for fast watercraft

QUICK BOAT WITHOUT COLUMN OF SMOKE PROPULSED BY AT LEAST ONE PRESS OPULSION OF WATER JET.

Procedimiento operativo para una embarcación de superficie rápida que, además de un propulsor de hélice presenta al menos una propulsión por chorro de agua bajo la embarcación, en el que la energía de empuje se crea mediante motores de combustión, por ejemplo turbinas de gas, y en el que los gases de escape creados por los motores de combustión se distribuyen al agua mediante el chorro de agua de la propulsión por chorro de agua bajo la embarcación, y en el que la velocidad del chorro de agua de la propulsión por chorro de agua se ajusta de acuerdo con los requisitos de descarga y distribución de los gases de escape de tal manera que la velocidad del chorro de agua de la propulsión por chorro de agua sea independiente de la velocidad de la embarcación. Operational procedure for a fast surface vessel that, in addition to a propeller propeller has at least one water jet propulsion under the vessel, in which the thrust energy is created by combustion engines, for example gas turbines, and in which the exhaust gases created by the combustion engines are distributed to the water by means of the water jet of the water jet propulsion under the vessel, and in which the speed of the water jet of the water jet propulsion it is adjusted according to the discharge and distribution requirements of the exhaust gases in such a way that the water jet speed of the water jet propulsion is independent of the speed of the boat.

Inboard jet propulsion unit

Duct arrangement

A duct arrangement 18 for a waterjet propulsor 10 . The duct arrangement 18 comprises a main duct 30 having an inlet 20 . The inlet 20 has an elongate main portion 32 extending along a principal axis 34 , and at least one lateral portion 36 in fluid communication with the main portion 34 . The at least one lateral portion 36 extends part way only along the length of the main portion 34.

FLUID CONDITIONED INERTIA PROPULSION DEVICE

Vessel with longitudinal keels defining cavities for housing jet propulsion engines

Marine propulsion system with bypass eductor

A jet propulsion system is provided for a water craft in which the secondary flow channel allows water to flow around the impeller region and bypass the impeller blades under certain conditions. The bypass feature provided by the secondary flow channel decreases static inlet pressure and improves the operation of the marine propulsion device at high speeds. In addition, the secondary flow channel increases the total mass flow of water through the steering rudder and therefore improves steering when the propulsion system is being rapidly decelerated, such as during sudden stopping conditions. The secondary flow channel can incorporate one or more individual conduits that bypass the impeller region of the propulsion system or, alternatively, can comprise an annular channel completely surrounding the impeller region.

Compact water-jet propulsion and steering system

The invention relates to the shipbuilding industry and can be used for high-speed vessels, crafts and motorboats. The aim of the invention is to develop a compact water-jet propulsion engine having a reduced weight and reduced dimensional characteristics. Said invention also makes it possible to increase the efficiency of the propulsion engine, improve the productibility thereof and to solve ecological problems. The aim is achieved by reducing the size of a nozzle provided with a slotted outlet section and by using a water-lubricated restraint plate and bearings. The inventive water-jet propulsion and steering system comprises a flow conduit, a hydraulic pressure device provided with a hub fairing and arranged on a shaft with bearings, a straightening device having profiled posts for fixing the hub fairing of a working wheel to the nozzle and a reverse steering device provided with a rotatable deflector. Said water-jet propulsion and steering system enables a vessel to move at different speeds while running ahead, while the vessel is reversed and in a 'stop' position, and also to manoeuvre during all modes of motion. According to a model test, said invention makes it possible to increase the propulsion characteristics of the water-jet propulsion and steering system by 5-10 %, the overall dimensions of the reverse steering unit being reduced by 50-60 % and the weight of the water-jet engine by 10-20 %.

Rapid exhaust-free boat propelled by at least one waterjet propulsion system

The invention relates to an operation method and a propelling device for a large ship, for example a military rapid surface ship provided with at least one waterjet propulsion system (22) which is arranged under said ship and whose propulsion energy is produced by internal combustion engines (1), for example gas turbines. Exhaust gases produced by said internal combustion engines (1) are distributed by the water jet of the waterjet propulsion system (22) in the water under the ship. The speed of the water jet of said propulsion system is controlled according to requirements associated with the introduction and distribution of exhaust gases.

Waterjet propulsion apparatus

A waterjet propulsion apparatus comprises a motor 7, an impeller 6, driven by the motor via a drive shaft 8, and a power source. A fluid flow-path 10 is formed through the apparatus, the flow-path extending from at least one fluid inlet 9 through two propulsion passages 3, each propulsion passage extending from a propulsion inlet to an outlet 4 located at the rear of the apparatus. The impeller is located within the flow-path, after the at least one fluid inlet, and before the propulsion inlet of the each of the propulsion passages. The motor is located outside of the flow-path, between the two propulsion passages, and behind the impeller. The apparatus provides a compact and lightweight construction that can be used as part of a personal marine propulsion device 1, that can be used by an individual.

Underwater two phase ramjet engine

An underwater two-phase ramjet propulsion unit includes an inlet (104) for receiving a flow of water, a compressed gas injector (132, 134) for injecting compressed gas into the flow of water a mixing chamber (106) for mixing the compressed gas with the water to provide a two-phase flow of working fluid, and a nozzle (108) for accelerating the two-phase working fluid to generate a two-phase jet. The propulsion unit can be implemented with fixed geometry or variable geometry. The propulsion unit includes a supersonic gas injector (132) as well as a subsonic gas injector (134). The propulsion unit includes a control system (110) for controlling the compressor (122), supersonic gas injector (132), subsonic gas injector (134), the geometry of the unit, and the direction of the thrust vector.

PROPULSION FOR FAST BOAT.

Propulsión para vehículo acuático, dispuesta fuera del casco de dicho vehículo acuático, para alcanzar una alta velocidad de marcha con una carcasa circundada por el agua del entorno, con un electromotor (11, 12) dispuesto dentro de la carcasa (1), con por lo menos una rueda motriz (4) que sirve para la propulsión del vehículo acuático, unida con la parte giratoria del electromotor formado por parte giratoria y parte fija, estando la parte fija unida con tirantes a la carcasa y con un sistema de gobierno ajustable (2) delante y un sistema de gobierno ajustable (25, 25a) detrás de la por lo menos una rueda motriz (4), caracterizada por el hecho de que el sistema de gobierno ajustable (2) delante de la rueda motriz (4) va dispuesto en la sección del canal de corriente (3) cuya sección transversal se vuelve constantemente mayor hacia la rueda motriz (4) y está formada por paletas directrices (2b), oscilables alrededor de ejes (21) orientados perpendiculares al eje de giro (9) de la rueda motriz (4), mientras que el sistema de gobierno detrás de la rueda motriz (4) sirve para regular el canal de corriente de tal modo que el mismo puede variarse, fundamentalmente hacia la salida del canal de corriente, de manera que sea cada vez más pequeño. Propulsion for a water vehicle, arranged outside the hull of said water vehicle, to achieve a high speed of travel with a housing surrounded by the surrounding water, with an electric motor (11, 12) arranged inside the housing (1), with at least one driving wheel (4) used for the propulsion of the water vehicle, connected to the rotating part of the electric motor formed by a rotating part and a fixed part, the fixed part being connected with braces to the housing and with an adjustable steering system ( 2) in front and an adjustable steering system (25, 25a) behind the at least one driving wheel (4), characterized by the fact that the adjustable steering system (2) in front of the driving wheel (4) goes arranged in the section of ...

Variable marine jet propulsion

A variable marine jet propulsion system incorporates a motor, a variable-pitch propeller pump in a spherical housing, a variable housing and a variable inlet duct, and a microcontroller. The pump, the nozzle and the inlet are controlled by the microcontroller, which is programmed to control the pump as a continuously variable power transmission for maintaining efficient motor operation, the nozzle for maintaining efficient pump operation, and the inlet for maintaining efficient recovery of the total dynamic head of the incoming water. The spherical pump housing maintains close fits to the propeller vane tips for more efficient operation at all pitches, including zero and reverse pitches. Zero pitch results in no effective pumping action, effectively a true neutral in fluid power transmission. Reverse pitch in combination with the large variable nozzle provides reverse flow and consequently reverse thrust, which eliminates the need for the "backing bucket".

Underwater propeller

本发明涉及一种水下推进器，包括动力部、螺旋桨，所述动力部设在所述螺旋桨的上游，用于驱动所述螺旋桨转动，所述水下推进器还包括：进水部，所述动力部设置在所述进水部的上游或内部，所述进水部上设有进水口，所述进水部的一端和另一端呈柱状，所述进水部的一端所在径向截面的直径向所述进水部的另一端所在径向截面的直径逐渐增大；出水部，所述出水部设置在所述进水部的下游，所述出水部的一端设有出水口；其中，所述进水部与所述螺旋桨相邻，设置在所述螺旋桨的上游，所述螺旋桨设置在所述出水部的内部。本发明通过改进水下推进器的结构，提高了水下推进器在使用时的导向稳定性，以及动能利用率。

Water jet propulsion device

There is provided a water jet propulsion device 10 for a water vehicle, comprising a main duct 12 having a main inlet 14 that is arranged to be submerged in use and a main outlet 16 ; a pump disposed between the main inlet 14 and the main outlet 16 ; and a plurality of injection nozzles 40, 50, 60, 70 each arranged to selectively eject a jet of fluid into a different region A, B, C, D susceptible to cavitation, so as to re-energise the fluid flow in that region.

Duct arrangement

A duct arrangement 18 for a waterjet propulsor 10. The duct arrangement 18 comprises a main duct 30 having an inlet 20. The inlet 20 has an elongate main portion 32 extending along a principal axis 34, and at least one lateral portion 36 in fluid communication with the main portion34. The at least one lateral portion 36 extends part way only along the length of the main portion 34.

Device for moving a watercraft

The present description relates to the maritime sector. In particular, the invention relates to a device (100) for moving a watercraft, the device comprising: - at least one propulsion chamber (50) comprising a first inlet section for a liquid, referred to as the upstream edge (50a), and a second outlet section for the liquid, referred to as the downstream edge (50b); - at least one flexible membrane (M1) housed in the chamber; and - at least one actuator (A1) configured to produce thrust from the vehicle through corrugation of the membrane between the upstream edge and the downstream edge.

Operating method for high-speed vessel, which, apart from a propeller device, has at least one water jet drive beneath the vessel and drive mechanism for implementing the operation mrthod for a high-speed surface vessel having a waterjet propulsion unit disposed beneath the vessel

A propulsion system for a large watercraft, e.g., for a high-speed, military surface craft, includes at least one water jet propulsion device (water jet) beneath the vessel. An operating method of such a system includes propulsive energy by combustion engines, e.g., gas turbines, and distributing the exhaust gases created by the combustion engines beneath the vessel in the water by the use of water flow of the water jet system. In such a method, the water flow speed of the water jet system is adjusted in accordance with the requirements of exhaust gas discharge and distribution.

Underwater two phase ramjet engine

Propulsion enhancing device and watercraft comprising same

Embodiments of the present invention are directed to devices adapted to enhance propulsion (i.e., propulsion enhancing devices) of watercraft such as, for example, personal watercraft and the like. To this end, a propulsion enhancing device in accordance with the disclosures made herein may be attached to or integral with (e.g., formed unitarily with a housing thereof) a propulsion unit of a watercraft. The propulsion unit generates a stream of water that provides for propulsion of the watercraft. A propulsion enhancing device in accordance with the disclosures made herein includes internal structures that enhance velocity and/or volumetric attributes of a stream of water generated by the propulsion unit by transforming non rotational flow at the inlet of the propulsion enhancing device to rotational flow at the outlet of the propulsion enhancing device.

一种组合式泵喷推进器

本发明公开了一种组合式泵喷推进器，包括主体，主体的内部开设有进水腔，主体的表面开设有进水孔与进水腔相连通。该组合式泵喷推进器，通过设置辅助旋桨，用于辅助泵喷推进器的工作，加强对船舶的推进力，从而加快船舶行驶速度，进水孔开设有六到十个，可以防止进水孔同时被堵塞，影响推进器工作，进水孔的进水口处均设置有弧形凹槽，推进器在移动时，水流经过弧形凹槽时容易形成环流，方便对弧形凹槽中的进水孔的进水口进行清理，进水孔的内部安装有滤网，可以防止杂质进入装置内部，影响推进器的工作，通过启动清理发动机，可以加速主体外表面的水流动速度，方便进一步对进水孔的进水口和滤网进行清理，保证进水口通畅。

Bomba de agua para embarcacion.

Se proporciona un sistema de embarcación autopropulsada. La embarcación tiene una base con una pluralidad de paredes laterales que se extienden desde la base para formar una cabina. La base también tiene un hueco, donde una bomba puede conectarse de manera desprendible al casco dentro del hueco. La bomba tiene una válvula de admisión en un primer extremo y una boquilla en un segundo extremo que es opuesto al primer extremo. La válvula de admisión puede admitir agua. La boquilla puede expulsar el agua recibida en la bomba desde la válvula de admisión y agitar el agua que rodea la boquilla.

Thrust enhancing device

A thrust enhancing device is disclosed. The thrust enhancing device enhances thrust of a thrust generation part in a state coupled to the thrust generation part configured to obtain a propulsive force by using a reaction force of a fluid. The thrust enhancing device includes a venturi part configured to receive a basic fluid allowed to flow by the thrust generation part and allow the basic fluid to pass through the inside thereof, and an ejection induction part disposed in an inner flow field of the venturi part and configured to linearize a flow of a fluid to be ejected to the outside of the venturi part.

Antrieb für schnelle schiffe

Water pump for watercraft

A self-propelling watercraft system is provided. The watercraft has a base with a plurality of sidewalls extending from the base to form a cockpit. The base also has a recess, where a pump can detachably connect to the hull within the recess. The pump has an intake valve on a first end and a nozzle on a second end that is opposite the first end. The intake valve can intake water. The nozzle can jettison water received in the pump from the intake valve and agitate water surrounding the nozzle.

Vessel propelling system and assembly

The present disclosure relates to a vessel propelling mechanism. In one aspect, a vessel propelling system includes a motor and a waterjet system. The waterjet system is coupled to the motor and includes a stator with a plurality of blades. A first blade of the plurality of blades has a shape that is different than remaining blades of the plurality of blades, the shape of the first blade allowing a driving mechanism of the motor to be coupled to a shaft within the waterjet system.

Water pump for watercraft

A self-propelling watercraft system is provided. The watercraft has a base with a plurality of sidewalls extending from the base to form a cockpit. The base also has a recess, where a pump can detachably connect to the hull within the recess. The pump has an intake valve on a first end and a nozzle on a second end that is opposite the first end. The intake valve can intake water. The nozzle can jettison water received in the pump from the intake valve and agitate water surrounding the nozzle.

一种缸套活塞式船舶推进器

本发明涉及一种缸套活塞式船舶推进器，包括基板以及与船舶发动机输出轴相连的曲轴，基板的表面设置有具有若干个密封腔的缸套，密封腔的内部均设置有活塞，活塞共用一个轴杆。该推进器通过使活塞进行双行程做功，在往复运动时都具有加压喷水功能，在满足动力需求的情况下使用缸套的数量减少，可以大大降低成本，减少设备维护工作量，通过设置高压泵加压装置，使得活塞的两侧的压力差降低，减少密封环的磨损程度，提高缸套的使用寿命，通过设置转接器和快速转换机构用于快速切换、交替供水，其中快速转换机构通过曲轴进行驱动，可以使供水的切换频率与活塞的运动频率保持一致，持续进行增压供水。

Personal watercraft gullet

Wasserstrahlantriebseinheit

System and apparatus for improving safety and thrust from a hydro-drive device

A system and apparatus are disclosed for improving safety and hydro-flow thrust from a hydro-drive device (108). The apparatus may include a shroud (204) having a first opening for the ingress (208) of water, and a second opening for the egress (210) of water, and a vane (402) extending inward from an interior surface of the shroud (204). The vane (402) is configured to direct water to form a vortex (404) that exits the shroud (204). The vane (402) may include a fixed, planar region (406) and a moveable, curved region (408) attached to an interior surface (410) of the shroud (204). Alternatively, the vane (402) may be attached to a surface of a paddle (602) configured to adjust the diameter of the second opening. The system may include a motor, a hydro-drive device (108) coupled to the motor, the shroud (204), and the vane (402).

Sistema a getto d'acqua

Underwater thruster

An underwater thruster with improved guide stability and increased kinetic energy utilization rate comprises a power part and a propeller, wherein the power part is provided upstream of the propeller for driving the propeller to rotate. The underwater thruster further comprises a diversion part which is provided between the water inlet part and the water outlet part and is connected with the water inlet part and the water outlet part respectively in a plug-in manner, to uniformly disperse water entering the water inlet part to blades of the propeller.

Water pump for watercraft

A self-propelling watercraft system is provided. The watercraft has a base with a plurality of sidewalls extending from the base to form a cockpit. The base also has a recess, where a pump can detachably connect to the hull within the recess. The pump has an intake valve on a first end and a nozzle on a second end that is opposite the first end. The intake valve can intake water. The nozzle can jettison water received in the pump from the intake valve and agitate water surrounding the nozzle.

Jet unit assembly

The invention relates to a jet unit assembly (1) comprising a jet unit (10), an electric motor (20), and a housing (30). The jet unit (10) comprises an intake (11) and a jet outlet (12), and defines a flow passage (13) therethrough with an impeller (14) disposed therein. The housing (30) comprises a proximal end, a distal end, a periphery (38) extending therebetween, a region having an underside opening (35), and a cavity (34) internal of the periphery (38). The intake (11) is secured to the housing (30) within the underside opening (35). Sealing of the housing (30) can allow it to define a coolant tank within the cavity (34) which facilitates circulation of liquid coolant to cool the electric motor (20). The housing (30) may also provide for convenient mounting of the electric motor (20) and the jet outlet (12).

Wasserstrahlantriebsgerät.

Schnelles, durch mindestens einen waterjet angetriebenes, schiff ohne abgasfahne

Unités mobiles à trainée très réduite, à entrées canalisantes motorisées

Water pump for watercraft

Schiff mit einem antrieb durch innenbordmotoren und waterjets

Propulsion enhancing device and watercraft comprising same

Embodiments of the present invention are directed to devices adapted to enhance propulsion (i.e., propulsion enhancing devices) of watercraft such as, for example, personal watercraft and the like. To this end, a propulsion enhancing device in accordance with the disclosures made herein may be attached to or integral with (e.g., formed unitarily with a housing thereof) a propulsion unit of a watercraft. The propulsion unit generates a stream of water that provides for propulsion of the watercraft. A propulsion enhancing device in accordance with the disclosures made herein includes internal structures that enhance velocity and/or volumetric attributes of a stream of water generated by the propulsion unit by transforming non rotational flow at the inlet of the propulsion enhancing device to rotational flow at the outlet of the propulsion enhancing device.

Water sport apparatus, control systems and methods

A water sport apparatus is disclosed. The water sport apparatus comprises: a propulsion system that is configured to propel the water sport apparatus, the propulsion system comprising: an impeller; and a drive system that is configured to drive the impeller to propel the water sport apparatus. The water sport apparatus comprises a controller for controlling the propulsion system, the controller comprising a sensor system; wherein the controller is configured to: determine a speed estimate that is indicative of a speed of the water sport apparatus using sensor data determined using the sensor system; compare the speed estimate to a speed threshold; and activate the drive system to drive the impeller in response to the speed estimate being equal to or greater than the speed threshold.

Water pump for watercraft

A self-propelling watercraft system is provided. The watercraft has a base with a plurality of sidewalls extending from the base to form a cockpit. The base also has a recess, where a pump can detachably connect to the hull within the recess. The pump has an intake valve on a first end and a nozzle on a second end that is opposite the first end. The intake valve can intake water. The nozzle can jettison water received in the pump from the intake valve and agitate water surrounding the nozzle.

Water pump for watercraft

A self-propelling watercraft system is provided. The watercraft has a base with a plurality of sidewalls extending from the base to form a cockpit. The base also has a recess, where a pump can detachably connect to the hull within the recess. The pump has an intake valve on a first end and a nozzle on a second end that is opposite the first end. The intake valve can intake water. The nozzle can jettison water received in the pump from the intake valve and agitate water surrounding the nozzle.

Vessel propelling system and assembly

The present disclosure relates to a vessel propelling mechanism. In one aspect, a vessel propelling system includes a motor and a waterjet system. The waterjet system is coupled to the motor and includes a stator with a plurality of blades. A first blade of the plurality of blades has a shape that is different than remaining blades of the plurality of blades, the shape of the first blade allowing a driving mechanism of the motor to be coupled to a shaft within the waterjet system.

Combined marine propulsion and steering means

추력 증강장치

본 발명은 추력 증강장치에 관한 것이다. 이는, 유체의 반작용력을 이용하여 추진력을 얻는 추력발생부와 결합한 상태로 추력발생부의 추력을 증강시키는 것으로서, 상기 추력발생부에 의해 유동하는 기본 유체를 받아 내부로 통과시키되, 기본 유체가 통과하는 동안 내부의 압력 강하를 유발하여, 추력발생부 주변의 주변 유체를 내부로 흡입한 후, 기본 유체와 함께 분사되도록 함으로써 총 분사 유량을 증가시키는 벤투리부와; 상기 벤투리부의 내부 유동장에 배치되며, 벤투리부 외부로 분사되는 유체의 흐름을 직선화시키는 분사유도부가 포함된다. 상기와 같이 이루어지는 본 발명의 추력 증강장치는, 벤투리 효과를 이용해 최종 분출 유체의 유량을 증가시킴으로써, 추가된 유체의 유량에 해당하는 만큼의 반작용력을 향상시키므로 고효율의 추진력을 발생한다.

推力増強装置

【要約】本発明は、推力増強装置に関する。これは、流体の反作用力を用いて推進力を得る推力発生部と結合した状態で推力発生部の推力を増強させるものであって、前記推力発生部によって流動する基本流体を受けて内部に通過させ、かつ基本流体が通過する間に内部の圧力降下を誘発して、推力発生部周辺の周辺流体を内部に吸入した後、基本流体と共に噴射させることにより総噴射流量を増加させるベンチュリ部と、前記ベンチュリ部の内部流動場に配置され、ベンチュリ部の外部に噴射される流体の流れを直線化させる噴射誘導部とが含まれる。このように構成される本発明の推力増強装置は、ベンチュリ効果を利用して最終噴出流体の流量を増加させることにより、追加された流体の流量に相当するだけの反作用力を向上させるので、高効率の推進力を発生する。

Thrust enhancing device

The present invention relates to a thrust enhancing device. The thrust enhancing device is to enhance thrust of a thrust generation part in a state of being coupled to the thrust generation part configured to obtain a propulsive force by using a reaction force of a fluid, and the thrust enhancing device includes a venturi part configured to receive a basic fluid allowed to flow by the thrust generation part and allow the basic fluid to pass through the inside thereof, the venturi part being configured to induce a pressure drop in the inside thereof while the basic fluid passes therethrough, suck a surrounding fluid around the thrust generation part into the inside thereof, and then eject the surrounding fluid together with the basic fluid to increase a total ejection flow rate, and an ejection induction part disposed in an inner flow field of the venturi part and configured to linearize a flow of a fluid to be ejected to the outside of the venturi part. The thrust enhancing device of the present invention, which is configured described above, increases a flow rate of a finally ejected fluid by using the Venturi effect, thereby increasing the reaction force to a degree corresponding to a flow rate of an added fluid and generating a high-efficiency propulsive force.