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Engine component and method for such component mounting Vessel contains hull and engine where the engine comprises tunnel element and propeller component. The tunnel element mounted inside hull forms part of through tunnel in the hull. The propeller component and the tunnel element have interacting fasteners providing detachable connection of propeller component and tunnel element so that the propeller component can be pushed into tunnel and connected with tunnel element or detached from tunnel element and pulled out from tunnel. Method for mounting and dismantling the propeller in the tunnel element located inside vessel hull is also suggested. |
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Screw propeller comprises hub. Screw propeller allows purposeful variation of fluid parameters at blade suction and pressure surfaces. Said hub is composed of the barrel with blades secured at its inner surface. Hub walls have rows of through holes regularly made over hub perimeter at both blade suction surface and pressure surfaces. Rows of through holes on said suction and pressure surfaces are separated and communicated with separate compressed gas sources. Drive shaft is hollow and fitted in fixed sleeve to run therein, circular groove is made on the side of said sleeve facing the hub bottom part, groove bottom is connected via hole with opposite side of said fixed sleeve. Outer surface of second sleeve is aligned with circular groove nearby drive rotational axis to make cylindrical circular groove with chamber side surface facing the latter. Circular cylindrical groove section remote from fixed sleeve is connected with clearance between second sleeve end and hub bottom part. Drive shaft cavity is connected with compressed gas first source while its end if covered by first check valve and opening in fixed sleeve is connected with compressed gas second source and closed by second check valve. |
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Method of compressing information for automated design of ship movement control systems Method of compressing information for automated design of ship movement control systems, consisting of a measured information unit, local area networks, controllers, actuating means, a dynamic model of ship movement, an information presentation and result recording unit, a control and mode optimisation unit, an information compression unit, comprising registers for the obtained value and time of arrival thereof, a first comparator unit, a register for recording the time of transmission, logic OR and AND units, a timer, a second comparator unit, a transmitted value register and a network packet former. The method includes time delay of transmission of measured information to a local area network by a given value C1. |
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Invention relates to sea and river transport, namely to running rigging of sea and river vessels with sailing equipment. The sail boom-jack represents mechanism fixed on vessel structures and based on bobbin for unwinding and reverse winding on running rigging tackle, e.g. rope. The mechanism represents inertial mechanism for unwinding and reverse winding on running rigging tackle, e.g. rope, which is fixed by its stretching out end on forecastle or on sail boom. The mechanism is fixed on forecastle or sail boom. |
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Water-jet propeller comprises working wheel with cylindrical hub with constant or variable pitch blades with leading and trailing edges fitted in cylindrical adapter. Diameter of working wheel blades at inlet is larger than that at outlet to make frontal area is smaller than that at inlet by 1.5-2 times. Said case accommodates fixed blades of opposite direction relative to blade profile direction. Height of blades varies along the flow from minimum to maximum to make constant clearance with working wheel blades. Blades are smoothly curved to axial direction at outlet. |
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Invention relates to ship propellers and can be used both in ordinary and in high-speed ships, as well as a working body in the water-jet propulsors. The ship propeller (propulsor) comprises a sleeve and blades. On the working side of the blades the protrusions are located, oriented on circumference of rotation relative to the axis of rotation of the propeller. The height increases linearly from zero at the inlet edge to maximum at the output. |
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Underwater vehicle control system Invention can be used in designing underwater vehicle control systems which facilitate orientation and movement thereof along a given trajectory with a given trajectory speed, or to a given point along a required trajectory without trajectory speed requirements, or to a given point with zero final speed. An apparatus for controlling a mobile object further includes a shipborne control station, two transceivers with antennae, a sonar set with an antenna and a coordinate adjustment unit, wherein the control object is an underwater vehicle and a large part of the equipment is installed on the shipborne control station. |
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Invention relates to ship building, namely to marine propulsors for shallow-water flat-bottomed vessels. The marine propulsor contains pressurised water supply pipeline and nozzle. Vessel's fore end is made at the front as part of cylindrical or spherical shell. On the front outside surface, water is pumped under pressure from nozzle from above or from above-behind. This water spreading down over shell surface and interacting with water beneath waterline of flat-bottomed vessel creates pushing force. |
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Proposed mover comprises drive and drive pulleys for flexible endless belt or chain to rune there over. Platforms are arranged at said chain to carry paddle blades. Guides are arranged at ship hull between said drive and driven guides. Said platforms get into said guides to move therein to direct said blades perpendicular the ship travel. |
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Method of lift creation by second-order surfaces Proposed method consists in creation of aerodynamic or hydrodynamic lift by rotation of second-order-surfaces. For example, straight, round, hollow cone is spinned relative to axis extending through circle centre of the base and vertex. Note here that created lift is directed along that axis from vertex to base. |
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Creation of thrust by propeller and pull propeller with drive (versions) In propeller turn through 360 degrees, propeller blades additionally make flapping motions in direction opposite the propeller thrust and in direction of propeller thrust. Note here that in direction opposite the propeller thrust flapping is performed at higher rate than in direction of propeller thrust. Pull propeller comprises hub with shaped end surface in contact with platform shaped surface supporting the drive and connected by rods with propeller hub fixed at engine shaft. Profile of shaped surfaces in contact at invariable rotor rpm during said turn through 360 degrees allows flapping motion of propeller blades at the rate of hub sliding and acceleration of blades along engine shaft to drive platform higher than in opposite direction. Propeller hub can house piston with rod to spin the blades at rod displacement. Pull propeller with drive can comprise solenoid while propeller hub can incorporate permanent magnet to make the blades flap. |
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For operation of installations fresh water stored in reservoirs is used which water is energy carrier. Jet hovercraft includes hull, hull guard, reservoirs for fresh water located in the hull, centrifugal fans to discharge compressed air under hull bottom and create air cushion and gas-steam turbine plants for centrifugal fans operation, jet gas-steam turbine plants placed on deck for vessel movement which plants use water as energy carrier and produce effective power and traction force, installed in vessel hull steam generator working on exhaust hydrogen and oxygen with temperature of 500-550°C and connected by main steampipe with steam header of jet gas-steam turbine plant and refrigerator for cooling exhaust hydrogen and oxygen from steam generator which header is connected to accumulating reservoir and distribution device, steam generator connected to cooling system of jet gas-steam turbine plant working on liquid-metal coolant, connected with steam turbine and with main steampipe, connected to electric generator switched to electric board and to condenser, jet gas-steam turbine plant plasmochemical reactor power supply unit connected to electric board. The jet gas-steam turbine plant includes housing with diffuser for atmospheric air intake with starting motor installed in its cowling, jet nozzle for traction force creation accommodating cone and injectors to inject hydrogen or hydrocarbon fuel to force plant and increase traction force, and two power units installed in the hull and containing thermodissociating gas turbine plant and steam turbine plant connected by shaft from one side with electric generator switched to electric board and from the other side - with high-pressure fan for creation of air movement in ring-shaped channel between the hull and power units and centrifugal compressor connected to combustion chambers equally spaced along circumference for combustion of dissociation products - hydrogen and oxygen - and creation of traction force. The thermodissociating gas turbine plant for producing energy source - hydrogen and oxygen - and useful power is performed with plasmochemical reactors equally spaced along circumference for thermal dissociation of water steam and obtaining hydrogen and oxygen with temperature exceeding 2500°C and with high pressure, connected to power supply, communicating at one end by means of disk-valve with holes for steam intake and ring-shaped labyrinth seals, rotating at specified frequency, with steam header, and at the other end are connected with expanding nozzles and cylinders of wave compressors having injectors for water or liquid metal injection in them connected to gas turbine mounted on shaft connected with electric generator which turbine is provided with outlet pipe to discharge exhaust hydrogen and oxygen into steam generator. The plasmochemical reactors for thermal dissociation of water steam and producing hydrogen and oxygen with temperature exceeding 2500°C, expanding nozzles and cylinders of wave compressors have jackets for cooling liquid circulation - liquid metal cooler and water - for cooling nozzle walls - anodes of plasmochemical reactors. The plasmochemical reactors contain housing with jacket which housing communicates with cooled nozzle - anode, with located in housing at specified distance from its walls electrode-cathode mounted in device being connected to power supply, with located in housing injector for injection of easily-ionising additive, or several plasmochemical reactors with located in housing injector for injection of easily-ionising additive are located in one unit connected with expanding nozzles of wave compressors at one end, and at the other end communicate with disk-valve having holes for steam intake and ring-shaped labyrinth seals, or several plasmochemical reactors located in one unit contain housings with jacket, cover and dome, with electrodes-cathodes mounted in housings at specified distance from their walls in electric insulation layer, which housings communicate with cooled nozzles-anodes. On the unit of plasmochemical reactors, valve mechanism with inlet valve water steam intake. Valve mechanism includes fitting pipe for steam intake which fitting is connected with header attached to housings of plasmochemical reactors, with inlet valve located on header, with limiter and spring for water stem intake. Steam turbine plat for hydrogen combustion in oxygen and obtaining useful power is made with axial compressor connected to distributing device, which compressor is connected in series with connecting cylinders, combustion chambers equally spaced along circumference including injectors for hydrogen ignition in oxygen due to injection of gaseous jets of electroconducting liquid thermal dissociation products and hybrid injectors for injection of gaseous mixture of electroconducting liquid and hydrocarbon fuel thermal dissociation products, with expanding nozzles and cylinders of wave compressors, connected to steam turbine mounted on shaft connected with thermodissociating gas turbine plant and electric generator, which turbine is provided with outlet fitting pipe to discharge exhaust steam into condenser. Axial compressor is made with two housings, with inlet chamber with atmospheric air intake shutter gimbal-mounted on it. The second housing is equipped with inlet fitting pipe for intake of dissociation products - hydrogen and oxygen - from distributing device. Injector for hydrogen ignition in oxygen contains housing with fitting pipes for electroconducting liquid infeed which pipes are connected with cylindrical channels located inside housing in electric insulating material layer. On one end of these pipes, electrodes connected to pulse oscillator are installed, and on the other end nozzles are made which are directed at an angle to each other and communicating with injector explosion chamber having bottom with outlet holes for gas jets. The hybrid injectors contain housing with fitting pipes for electroconducting liquid infeed which pipes are connected with cylindrical channels located inside housing in electric insulating material layer in parallel with fuel injector location. On one end of these pipes, electrodes connected to pulse oscillator are installed, and on the other end nozzles are made which are directed at an angle to each other and communicating with injector explosion chamber having outlet nozzle for gas jets. |
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Set of inventions relates to ship building, particularly, to propellers with partially immersed screws. This drive comprises partially immersed screw, rotary stern tube with ball part, thrust case, spherical pivots control hydraulic cylinders arranged in stern tube. Drive shaft, countershaft and drive shaft are coupled with screws. Assembly of drive hydraulic cylinders fastening to vessel transom comprises control hydraulic cylinder with body equipped with thrust cup for two hemispheres. Hydraulic cylinder controls the drive and comprises body to house the cylinder, hoses and valves. |
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Hydrodynamic propulsor comprises hydrodynamic tubes and wing. Hydrodynamic tube comprises parallel axes while their ends are connected with fluid feed means to make a circulation circuit. Every hydrodynamic tube houses at least one wing to adjust the angle of attack of fluid incident flow. |
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Light-loaded water-jet propeller Light-loaded water-jet propeller consists of impeller, straightener blades, water conduit and central body projecting forward and backward from water conduit. Water conduit represents ring with section chord length less or equal to impeller diameter. Inner surface of water conduit is made cylindrical and tapered. Central body diameter is variable along its length and has maximum value at aft section of water conduit. |
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System for determining hydrodynamic coefficients of mathematical model of ship movement Invention relates to ship navigation - automatic ship control. A system for determining hydrodynamic coefficients of a mathematical model of a ship movement comprises a device for setting identification manoeuvres of controlling the ship movement, a control object, as well as a unit for generating gain coefficients during identification of hydrodynamic coefficients of the ship. A measurement unit includes sensors for: lateral acceleration, lateral velocity of the ship, longitudinal velocity, angular velocity, rudder angle, angular acceleration. A memory unit comprises current estimates of the hydrodynamic coefficients of the ship and covariance matrix elements. |
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Propeller screw comprises hub with blades fitted on propulsion shaft, said blades being equally spaced apart at the angle to the shaft lengthwise axis. Shell with toothed edge on the incoming water flow side is secured to top parts of said blades. |
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Installation for conversion of roll and pitch energy of going vessel Installation for conversion of roll and pitch energy of the going vessel comprises a body of anticorrosive material with ratchet mechanisms arranged in parallel to its sides, one end of the mechanisms is placed in the rear part of the installation while the second is in the front part and is fixed to the cylinder-shaped shaft. Both ends are interconnected by a circuit connected to side outputs of a rectangular tank placed inside the installation. On the top of the tank there are a front and rear handles. Wheels of the tank are placed at the rails fixed to the installation bottom. Between rails in the front and rear part of the installation there are spring-type brake systems consisting of a heel and a spring. At the installation top part, from inwards, at both sides there are gripping mechanisms, which consist of a latch hook, a lock and spring. |
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Submarine apparatus control device Submarine (1) comprises propulsors of vertical and horizontal motion propulsors (2) and (3), rotary TV camera (4), TV camera turn angle transducer (5), first, second and third nonlinear functional transducers (6, 7, 8), propulsors control unit (9), distance transducer (10), manually actuated switch (11), threshold element (12) and electronically controlled switch (13). |
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Invention relates to shipbuilding and specifically to automatic ship control. The fail-safe ship control system comprises a differentiation unit, a steering sensor, three depth sensors, a trim angle sensor, a steering gear, trim angle depth setting device, three depth estimate filters, four trim angle estimate filters, an adder, a steering gear, seven diagnostic units and an average depth estimate former. |
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Proposed system comprises steering drive and following transducers: angular speed, ship heading, rudder angle, lateral speed, ship running speed, angular and lateral acceleration, ID manoeuvre master, two adders, memory, comparator, ten adders and tem multipliers. |
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Invention relates to ship electric power plants with shaft generators and semiconductor frequency converter. Ship shaft generator plant comprises the main engine, disengaging coupling, shaft line, screw propeller, shaft generator, electric circuit, the first and second current sensors, input throttle, the frequency converter, the output throttle, LC-filter, the first and second circuit breakers, bus of ship electrical loads, an additional generator mechanically connected with an additional engine, capacitor accumulator of DC link with voltage sensor. Main engine, shaft generator and screw propeller are mounted on the shaft line coaxially. The rotor of shaft generator is mounted to the end of the shaft line, connected to the screw propeller. On the shaft of the main engine there is also the first shaft position sensor, and on the shaft line from the side of the screw propeller the second shaft position sensor is mounted in addition. Both shaft position sensors are connected to the control unit of torsional oscillations, which output is connected to the signal input of the mode selector. |
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Device to up maneuverability of small craft Proposed device comprises the base and appliance for engine propeller screw sinking. Said base is composed of a frame with two brackets rigidly secured thereto for device attachment to boat transom. Frame one side is articulated at the base while the overboard engine support is rigidly secured to the other end. Ski composed of diverging beams provided with ski adjustment handle is gimbal mounted at the base lower part. Ski control handle retainer is fitted at the bracket base top part. Device is provided with boat engine support lifting-lowering appliance. One end of the latter is secured to the base bottom part while opposite end is secured to one of crossbars secured at the frame to double as stiffness ribs. |
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Water-jet propulsor reverse steering device Reverse steering device for water-jet propulsor includes two vertical synchronous rudders secured behind nozzle and reverse choker rotary hinged on horizontal axis behind nozzle. The reverse choke is made with vertical side walls and back wall in the form of cylindrical surface equidistant relative to aftermost edges of rudders made along segment of a circle. In the upper part of reverse choker back wall steering lock is installed. In the aftermost part of side walls windows are made which windows are provided with external fitting pipes with guiding plates. On the exit section of reverse choke a baffle plate is installed which baffle is mounted using flat pillars. |
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Bladed ship propeller (versions) Bladed ship propeller contains several flat blades which are connected by bilateral Gal chains. On crawler wheels shaft of chain transmission engine is installed at each board. At the ends of each blade shaft, guiding bilateral levers with bilateral rollers on both ends of each lever are fastened perpendicular to shaft axis and at right angle to blade plane. The rollers are placed to move in lengthwise closed grooves-boxes on vessel hull. The grooves-boxes in their lower horizontal part between crawler wheels are single-row, and in the remaining part of closed loop they are double-row with transitions from single-row into double-row and vice versa. In the upper part of loop between crawler wheels the grooves are parallel. |
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Electric power system for perspective non-nuclear submarines Electric power system comprises an accumulator battery, two diesel generating sets, two electrochemical generators, an automatic circuit breaker, electric propulsion system, control boards with switching and protective gear and switchboards. The electric propulsion system is made as all-mode electric propulsion system consisting of a propulsion motor and its power supply system, bypass power diodes are also installed in it and the system is connected to the power line by these diodes. The accumulator battery consists of two groups; each group is coupled to the power mains through automatic circuit breakers at the accumulator battery boards. The accumulator battery is made as a lithium-ion rechargeable cell; each group is divided into subgroups and connected to the power mains through double automatic circuit breakers. The distribution boards are connected to semi-groups of the lithium ion battery through diode isolation. |
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Method for helical screw-propeller installation (russian logic version - version 1) Method for helical screw-propeller installation in which screw shaft is made rotatable and on the surface of which screw-propeller blades are placed in sequence. Shaft is made elongated, one end of the shaft is hinged in passive fixing device which is fastened in upper part of linear reinforcement cover with round surface on one its side, and the second shaft end is hinged in active fixing device which is fastened at the second end of cover on its bottom side, and this end of shaft is functionally connected with machine to transfer torque to it. Screw blades are made helical in the form of endless screw to increase volume of water medium being transferred. |
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Transonic water-jet vessel propulsor Invention relates to shipbuilding, namely to water-jet propulsors for vessels and other floating crafts. The transonic water-jet vessel propulsor includes inlet and outlet water duct, fluid flow rate booster. The inlet water duct the outlet of which is connected with the inlet of fluid flow rate booster the outlet of which is connected with the inlet of outlet water duct. The fluid flow rate booster includes at least two nozzles on one axis where at least one nozzle is inserted into subsequent nozzle along fluid motion path with creation cavity between them, and at least in all cavities pressure sensors are installed, and in the inlet and outlet nozzles velocity sensors are installed. Herewith, the booster is made with possibility to create water-gas mixture in the area between two adjacent nozzles. |
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Proposed oar comprises one blade, shaft with swivel in oarlock and handle. Oar and shaft articulated to make a kinematic pair with flexible linkage. Said flexible linkage is composed of sprocket secured to blade and chain running over the latter and secured by cables to rowing boat on both sides from oarlock. |
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Invention relates to ship building, particularly, to jet propellers of ships, boats and other water craft. Jet adapter comprises outer case with central body composed by solid of revolution to make to outer case the central circular fluid feed channels with discharge nozzle and gas feed channel. Central body has central axial channel connected by its inlet with gas feed channel. Nozzle outlet section covers the central axial channel outlet section while outlet nozzle axial line is arranged at 20-90 degrees to central axial channel axis. |
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Rudder and vessel with such rudder Invention relates to rudder for vessel manoeuvring. Vessel has assembly of screw propeller and rudder. Rudder for vessel manoeuvring contains the main rudder blade having upstream end and downstream end and two essentially vertically passing rudder blades and two essentially vertically passing additional rudder blades connected with the main rudder blade by at least two transversal plates. Two transversal plates are connected to top and bottom ends of corresponding additional blades and/or the main rudder blade. Upper transversal plate is located above lower transversal plate and passes more obliquely upwards towards downstream end than lower transversal plate. |
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Method for creation of vessel water-jet propeller Invention relates to ship building and may be used as propulsor for various overwater and underwater vessels. To create water-jet propeller reversible gear pump. Outside water is delivered to each pump section via suction channels in vessel hull which channels are changed to be water-jet in reverse mode. Discharge channels of sections are combined into at least one water-jet nozzle and changed into suction channel for outside water in reverse mode, and the water-jet nozzle is equipped with adjustable head piece to change reaction force of water-jet stream. To accelerate executed manoeuvre the vessel fore end has additional gear pump which has discharge water-jet trumpets positioned perpendicular to vessel axis. |
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Proposed electric power generator plant has the main heat engine, disconnecting sleeve, extra heat engine connected with extra generator, main buses and buses of ship power consuming hardware. Plant control system comprises automatic circuit breakers, current and voltage transducers, first frequency controlled and reversible transducer incorporating controlled rectifier and inverter, DC link capacitor accumulator and local control system. Extra propulsion motor is connected to screw propeller and second circular propulsion motor with built-in second screw propeller. Besides, it includes second frequency transducer, voltage transducer and four power circuits. |
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Invention relates to shipbuilding, namely to vessels for active rest on water. Amphibious muscular vehicle contains flat-topped frame, floating facilities, executive motion device, foot drive and floating facilities, level stabilisers. The floating facilities are installed in one row at certain distance from each other and arranged with possibility to be equipped with passenger seats. In the frame, executive motion device is mounted which consists of two rows of guides. Pushers are installed on guides. Blades are pivotally mounted to lower sides of the pushers. Vehicle motion is implemented by foot drive consisting of pads for feet with attachment to footwear and fitted on pushers. Level stabilisers are made of curly plates the ridges of which are directed along vehicle travel path and which hold vehicle in horizontal position by water mass located above and beneath the surface of level stabiliser. |
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Invention relates to floating crafts, namely to water bikes designed for active rest and riding over water surface. The water bike contains floats fastened by cross members, seat and pedal propeller, as well as driving sprocket, swinging arm, a pair of enveloping sprockets, cantilevered axle, bushing with driven sprocket, free-wheel clutch, screw-propeller and round-link welded calibrated chain. The swinging arm is installed together with a pair of enveloping sprockets on the cross member and is made capable to recline back. The lower end of swinging arm contains axle. On the cantilevered portion of axle, bushing is installed which is rigidly connected with driven sprocket and is made capable of axial rotation and interaction with screw-propeller via free-wheel clutch. The pedal propeller contains driving sprocket which interacts with round-link welded calibrated chain the branches of which are hitched over enveloping sprockets and close on driven sprocket. |
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Invention relates to navigation, particularly, to automatic ship navigation in preset direction. This system comprises rudder translator, angular velocity transducer, speed transducer, heading angle transducer, heading angle setter, adder and steering drive. Rudder translator is connected to adder first input while heading angle setter is connected to second input of the latter. Adder output is connected to steering drive input. Besides, this system comprises heading angle transducer, two filters of heading angle evaluation and two filters of angular velocity evaluation, heading mean angle and angular velocity evaluation units, two transducers of ship crosswise speed and two filters of ship crosswise sped evaluation, lateral thrusting propeller rpm transducer, regulator, lateral thrusting propeller drive and angular velocity transducer. |
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Hydrofoil ship faultless careen abatement Invention relates to ship building, particularly, to careen automatic damping devices. For faultless hydrofoil ship careen abatement measurement the following gadgets are used: flap turn angle transducer unit, careen angle transducer, differentiation angle, flap drive unit, controllers unit, the following signals being fed to inputs of the latter: flap angle deflection and derivative of careen angle evaluation. Besides, this method exploits the ship speed transducer, careen angle transducer, two careen angle evaluation diagnostics units and two careen angle evaluation filters, the following signals being fed to first inputs of the latter: flap deflection angles and ship speed. |
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Screw propeller life extension Invention relates to ship repair and can be used for whatever type of propeller screws made of different materials. Screw propulsor life extension comprises measurement of actual geometrical parameters of propeller screw, calculation of the range of departure of said parameters by correction of operating parameters of propulsive complex. |
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Invention relates to ship building and may be used in screw propellers and active control means. Ring propulsor comprises motor, ring adapter and ring rotor that make a water-way duct and screw propeller. Screw propeller blade roots are fitted at ring rotor while blade tips are located in the area of water-way duct and fastened together. Blade tips are fastened together and roots are fitted in rotor via damping shims. |
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Screw-propeller manufacturing for various vessels with minimised cavitation effect on its surface includes manufacturing of screw shaft with possibility of rotation on the surface of which blades of screw-propeller are successively placed and fixed. Screw shaft with possibility of rotation is made as elongated cylindrical sector of 180° on which fitting pipes of screw blades are placed coaxially and successively. When each second fitting pipe is located coaxially the screw blades are preliminary turned through 180° relative to each first fitting pipe of screw blade which are mutually fixed thus forming spiral-shaped screw-propeller. |
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Ship electric generating plant contains main diesel engines or turbines, main synchronous generators, emergency diesel generator unit, stator windings, main distributing board, inputs of frequency conversion rectifiers. The stator windings through automatic circuit breakers are connected to power supply lines of main distributing board, to which through the automatic circuit breakers inputs of frequency conversion rectifiers are connected. The number of rectifiers is equal to number of lines of the main distributing board, the outputs of rectifiers are connected to inputs of multilevel invertors forming with rectifiers the frequency converters, feeding propulsion electric motors. To each line of the main distributing board through the automatic circuit breakers the primary multiphase windings of transformers with a rotating magnetic field are also connected, and the secondary three-phase windings of these transformers through automatic circuit breakers are connected to the three-phase power supply line of the distributing board of other on-board consumers. The stator winding of the emergency diesel generator through automatic circuit breakers is connected to the three-phase power supply line of on-board consumers. The stator of each main synchronous generator has one multiphase winding with a number of phases more than three, the phases of which are connected in a star or delta circuit, and the lines of the main distributing board have the same number of phases, as winding of main synchronous generators. |
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Invention relates to ship devices, particularly, to ship wave-driven propulsors. Ship wave-driven propulsor features simple design, absence of rotary mechanisms and moving parts. Said ship wave-driven propulsor is composed of inclined plate rigidly secured between catamaran hulls to up the incoming wave height and slope. Generated flow of pulses brings about thrust force T to push catamaran against the waves. |
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Motor boat comprises hull, cabin, cockpit, internal control station, power plant, shut-off clutch with forward and reverse reduction gear, propeller screw and control mechanisms. Power plant is composed by four-stroke diesel, each cylinder thereof having internal web with central bore to divide cylinder inside into two equal chambers. Cylinder is closed from bottom by lower cover with central bore. Pistons are fitted into cylinders, one in its chamber. Pistons are coupled by rod extending through web and bottom cover bores, its lower end being coupled with con-rod engaged with crankshaft crank. Webs, pistons and lower cover makes four chambers in the cylinder, each having an intake unit with intake valve interacting with camshaft cam and atomiser hydraulically communicated with high-pressure pump engaged with crankshaft. Intake unit is connected with air blower air filter while discharge unit with discharge valve is engaged with camshaft cam communicated via air exhauster and discharge pipe with atmosphere. |
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Invention relates to electrical engineering and can be used in a shaft generator system. The technical result is providing dynamic prevention of short circuiting. The shaft generator system comprises a shaft generator (18), having an inverter (42) with an intermediate voltage loop, with network-side inductance, wherein the inverter (42) with an intermediate voltage loop has at the generator side and the network side a corresponding alternating current rectifier (44, 46), connected to each other at the dc voltage side. The network-side alternating current rectifier (46) has at least two phase modulators, which respectively have an upper and a lower rectifier branches (P1, N1, P2, N2, P3, N3), which respectively have a plurality of electrically series-connected two-pole subsystems (SM1, SM2, …, SMn), which respectively have a unipolar storage capacitor (CSM), which is electrically parallel-connected to a circuit of series-connected two semiconductor switches (S1, S2) with a corresponding anti-parallel connected diode (D1, D2). |
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Method for improvement of submarine mobility (russian logic version - version 7) Invention relates to improvement of mobility of submarine including cylindrical hull with several propelling screws. Note here that said several propelling screws are composed of multiturn spiral or auger. It is positioned and locked at submarine bow bottom part to run in sector relative to submarine hull axial plane. |
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Invention relates to automatic control systems operating for a long period of time under unfavourable external factors. A control system, having three control computers connected through an information collection unit to sensors, satellite navigation equipment, an inertial navigation subsystem, an optical correction subsystem, also includes a clock pulse former, a computer channel switch connected by inputs to the computers and by the output to actuating devices with feedback sensors and the clock pulse former, and a control and monitoring unit. The control and monitoring unit is connected by inputs to outputs of the computers and control devices thereof, and by the outputs to the control input of the switch, wherein the outputs of the sensors and feedback sensors are connected to inputs of the information collection unit, the current bus of which successively passes through the sensors and the feedback sensors of the actuating devices and returns to the information collection unit, inputs/outputs of which are connected to the computers. |
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Marine transmission includes angular reduction gears to transfer torque from gas turbine engine to fixed pitch propeller. On the driving shaft of angular reverse reduction gear there are two hydraulically-operated friction clutches. The clutches are symmetrically installed at different sides of angular reverse reduction gear vertical axis with driven half-clutches facing this axis, and their driving half-clutches are rigidly connected with driving shaft of reverse reduction gear. On driven half-clutches, bevel gears are made which gears are facing each other and engaged with bevel wheel installed on output shaft of angular reverse reduction gear. The shaft is connected by clutch with top end of transmission made coaxial with vertical axis of angular reverse reduction gear. Bottom end of vertical transmission is connected by clutch with output shaft of lower angular reduction gear with conical reduction gear. |
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Vessel with adjustable plate on fore Invention relates to ship building, particularly, to vessels with wind-driven rotors. The proposed vessel contains at least one wind-driven rotor, herewith, this vessel has fore part which contains height-adjustable and/or swinging plate by means of which waves reaching vessel fore are broken. Method of such vessel operation is also proposed. |
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Ring vessel propulsor includes ring stator connected with vessel hull using support, ring rotor equipped with blade system and streamlined housing mounted on ring stator via shock-absorbers, and support is vibration-isolated from ring stator and streamlined housing which can be made assembled of several vibration-isolated from each other parts and manufactured of vibration-absorbing material. |
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Device and method for automatic control of scheduled vessel movement System includes receiver (1) of satellite navigation system, route selector (2) with outputs of the set path angle (PA) signal and the set angle φset of course angle, adjuster (3) of rudder displacement angle δset, steering gear (4), adjuster (5) of propeller shaft rpm nset, propeller shaft drive (6), adjuster (7) of maneuvering device rpm nman, maneuvering device (8), comparison unit (9), differential unit (10), control law correction unit (11) for rudder displacement angle δ, propeller shaft rpm nset, maneuvering device rpm nman, unit (12) of path angle (PA) vector position limit values four sectors, control ratio generator (13) and vessel (14) which all are interconnected. The system implements standard and precise control of vessel movement depending on results of comparison of difference between path angle (PA) from satellite navigation system receiver (1) and the set course signal φset from route selector (1) with constant C and on position of path angle (PA) vector in corresponding zone of path angle (PA) signal four limit values, thus determining adjustment ratios for each of three channels of vessel control. |
Another patent 2531546.