Ships or other waterborne vessels; related equipment (B63)

Method and apparatus for deactivating anti-landing mines and underwater reconnaissance robots

Invention relates to offshore mine-sweeping and can be used to destroy anti-landing mines and underwater reconnaissance robots, having contactless hydroacoustic and magnetic target and orientation sensors in a coastal area. The invention discloses a method of deactivating anti-landing mines and underwater reconnaissance robots and apparatus for carrying out said method. The method includes complex force action using a electrohydraulic impact and a pulsed magnetic field, said action being applied simultaneously. The apparatus comprises a high-voltage pulsed electric power source (1), an open current-conducting loop (2) and a high-voltage underwater discharger (3).

Flotation system

Invention relates to flotation systems. Proposed system comprises at least one inflatable part to up, as-inflated, the object flotation, at least one inflating device with gas generation system for gas feed and system for activation of at least on inflating device. Said gas generation system contains gas generation substances. Note here that gas generated thereof is cooled before feed to said at least one inflatable part. At activation of said activation system inflator initiates gas generation to inflate aforesaid part to preset volume which makes the object displace.

Method of using rocket-propelled radiosonic buoys (versions)

Invention relates to methods of monitoring an underwater environment. The method of using rocket-propelled radiosonic buoys from surface vessels to monitor an underwater environment by arranging buoys in a circle, includes determining the coordinates of the centre of the circle, using a computer to determine the radius of the circle, the required number of buoys and coordinates of thereof, loading a launcher with the required number of rocket-propelled radiosonic buoys, solving, at firing control devices, launcher guiding tasks to perform firing, guiding the launcher for firing to a first point, supplying power to pyrotechnic cartridges for firing the rocket-engine of the rocket-propelled radiosonic buoys, firing the first rocket-propelled radiosonic buoy, guiding the launcher and firing a rocket-propelled radiosonic buoy to the next points, using signals from buoys after water touchdown and beginning of operation thereof. The computer calculates the radius of the sector in which movement of an underwater object is located, the required number of buoys and coordinates thereof.

Removable rescue housing

Invention relates to ship building, particularly, to crew emergency escape from distressed submarine. Proposed housing system for accommodation and transfer of rescue submarine comprise housing with adapter shaft to house underwater rescue apparatus, solid containers with equipment and compressed air cylinders for maintenance of underwater apparatus and submariners decompression. Housing top is equipped with guard to protect the rescue underwater apparatus against rough sea.

Thrust generation in circular propulsor

To generate thrust in said propulsor, water is off-taken via inlet channel by circular screw propeller to accelerated water in water flow channel. The latter is composed by nozzle and rotor while water is discharged via discharge channel. Additionally, water is off-taken via at least one lateral channel arranged in said nozzle between circular screw propellers.

Pneumatic system for ship with air cavities at bottom

Ship is equipped with movable cavity-forming elements lengthwise limiting keels of the left and right boards, lengthwise intermediate keels arranged between lengthwise limiting keels of the left and right boards located parallel with ship centreline plane to make lateral and central sections, and cavitators located at ship bottom perpendicular to ship centreline plane and composed of inclined plates. Cavity-forming elements are equipped with air drives to open to working position and to be folded. Pneumatic two-line system can feed air separately from single compressed air source to said first and second lines. First line can feed compressed air via pipes to air drives, keep up operating pressure automatically at required level, and evacuate air from air drives in atmosphere via drain line. Second circuit feeds compressed air via pipeline and bottom Kingston valves to lateral and central sections and cavitators to maintain air cavities under ship bottom. Single compressed air source ensures preset air efficiency and pressure required for making and supporting the cavities.

Ship-raising cast-in-place and precast construction for small-size ships and method of its erection

Ship-raising construction includes a ship-carrying trolley, precast reinforced concrete slabs, a ship-carrying track with inclined and horizontal platforms and is equipped with a metal rack for placement and movement of precast reinforced concrete slabs along it in process of construction erection. The metal rack is made in the form of a metal frame including bearing metal beams with rigidly fixed retaining planks, which form an inclined guiding upper belt /IGUB/ with higher and lower sides, at the same time the higher side of IGUB is installed closely to the coastal ledge, and the lower side is installed with a support to the underwater coastal slope, at its end there is a support of the end block rigidly fixed with the end wall. L-shaped brackets are fixed to the lower side of each precast reinforced concrete slab. In the middle part of each reinforced concrete slab there is a hole for supply of concrete mix. Also the method is proposed to erect a ship-raising construction.

Method of controlling buoyancy of underwater vehicle

Method of controlling buoyancy of an underwater vehicle includes filling buoyancy chambers with air, change in volume of which is achieved by feeding or releasing air from said chambers. When the underwater vehicle reaches a given depth, air is partially released from the buoyancy chambers and further change in depth of the underwater vehicle is achieved only by compressing or stretching the buoyancy chambers using an external mechanical action on the buoyancy chambers.

Propulsor (propeller)

Invention relates to shipbuilding and aircraft engineering, in particular to ship and air propellers where propellers are used as engines. Propulsor (propeller) contains hub, blades with inlet and outlet portions, amplitude and deviation pitch of blade outlet edge profile. Outlet portions of blades throughout their height starting from 1/2 of profile length at the hub and 1/3 of profile length at periphery are made with periodic deviations of profile angle thus forming wavy surface of outlet blade portion and wavy outlet edge relative to designed value of blade angle in each cylindrical cross-section. Amplitude and pitch of blade outlet edge profile deviations from designed height value are maximal at the hub and minimal or equal to zero at maximum blade diameter, and on each subsequent blade the start of wave at hub is displaced relative to wave start of previous blade for amount of T/z, where T is pitch of the first wave, and z is number of blades.

Crane ship

Proposed crane ship includes hull with load-lifting boom devices with counterweights installed on it. Ship hull is provided with ballast keels fitted in centreboard wells located in diametral plane of ship. The ballast keels fall in lower position when heavy-weight objects are lifted, thus lowering ship centre of gravity and increasing its stability when ship width is limited. The ballast keels in their upper portion are made hollow being able to be filled with ballast water, and in their lower portion they are made as massive cast-iron bulb which transport position is sunk in centreboard well up to the level of base plane of ship thus decreasing ship draft.

Method for producing plastic mounting element of floating platform (versions)

Method for producing a plastic mounting element of a floating platform (version 1) consists in the fact that moulds for the cap are manufactured with at least one slot for a key and at least two fixed pawls and for the end part of the mounting element with at least one locking protrusion on the lateral surface. Then, the product is moulded in moulds by means of injection of the molten plastic under pressure in the form of a coaxially displaced plate, primary and secondary inserts and the product in the form of the end part with at least one locking projection on the lateral surface. A tube is produced by an extrusion method, cut up to the specified size and further its ends are welded with a neck of a complimentary insert respectively and the end part of the mounting element with formation of perfect junctions. The method of manufacturing the plastic mounting element of the floating platform (version 2) comprises steps as (in version 1) before moulding of parts, wherein an additional tube is made in the mould. Then, the product is moulded in moulds by means of injection of the molten plastic under pressure in the form of a coaxially displaced plate, primary and additional inserts covering the last one, the product in the form of an additional tube with projections on the outer surface and the product in the form of the end part with at least one locking projection on the lateral surface. Then, the main tube is manufactured by extrusion. It is cut up to the specified size and then the ends of the last one are welded to one end of the additional tube and the end part of the mounting element. The other end of the additional tube is welded to the neck of the main insert with formation of perfect junctions.

Paddle for sports rowing

Proposed paddle for sports rowing includes handle and blade in the form of working elements having orientation differing from longitudinal axis of paddle. Paddle blade is made in the form of rigid strip bended in transverse plane in the shape of "Z" letter, where superjacent strip portions overlap subjacent strip portions in longitudinal plane with backward shift (to paddle handle), and incidence angles of plane strip portions gradually increase from lower portion to upper portion.

Device for equalisation of anchor ropes or chains tension

Proposed device for equalisation of anchor ropes or chains tension contains two or more crossheads frame adjacent ends of which are connected by anchor ropes or chains with ends of corresponding double-armed lever, and the central part of the latter and the second ends of two utmost crossheads, as well as casings of crosshead upper blocks are connected by anchor ropes or chains with floating ice-proof platform. The casings of crosshead lower blocks are connected by anchor ropes or chains with anchors of this platform located at sea bed. All blocks of each crosshead are made movable and seized by equalising rope or chain the ends of which are fixed on crosshead frame ends which crosshead is provided with guides for block casings, the latter are placed in these guides with possibility to provide absence of their contact with other parts of crosshead metal structure during this device operation.

Paddle for sport rowing and canoeing

Proposed paddle for sport rowing and canoeing includes shaft and palm in the form of rigid frame carrying element in the form of wings of aircraft profile. Carrying working element in the form of wings of aircraft profile is fixed transversely and at an angle to palm longitudinal axis with gap between themselves, has various surface area, slit-type gaps between the front edges of wings are greater than between rear edges. Paddle palm frame is installed crosswise the paddle palm plane, in its end portion has shape of ship keel.

Highly protected versatile ship propeller

Proposed ship propeller includes cylindrical body opened at opposite butt ends inside which body following devices are coaxially installed: contrarotating screws, reverse reducing gear input shaft of which is designed to be linked with engine driving shaft. Each propeller screw at its blade ends has cylinder course on the outer surface of which ring gear is created which ring gear is kinematically connected with corresponding output gear of reverse reducing gear. Rudder gear is fixed on body at one of open butt ends.

Method for dampening forced vibration of vessel hydrodynamical stabiliser

Invention relates to shipbuilding, namely to methods for dampening forced vibration of vessel hydrodynamical stabilisers. Proposed method for dampening vibration of vessel hydrodynamical stabiliser is characterised by the following: internal cavities of stabiliser fin separated by permeable bulkheads are filled with liquid with elements increasing liquid mass. The elements increasing liquid mass are performed in the form of balls made of heavy material, for example of lead, and placed into spherical plastic containers partially compensating gravity.

Water-jet propeller

Invention relates to ship building, particularly, to water-jet propulsors to drive high-speed vessels and yachts. Water-jet propeller comprises cylindrical hub, blades with leading and trailing sections, fixed cylindrical adapter, blade pitch and stationary blades. Said blades feature variable pitch. However, blade variable pitch at inlet is larger than that at outlet while fixed adapter accommodates stationary opposite-direction blades with respect to blade profile direction recessed in adapter case.

Low-noise ship cabin

Cabin comprises metal built-up carcass consisting of bearing section structures accommodating sound-and-vibration insulating elements. Every said element includes layers of antivibration material on bitumen substrate, layer of sound absorbing material and perforated decorative panel. Air gap is formed between panel and said layer of porous sound absorbing material. Cabin carcass is jointed with ship bearing structures via antivibration system consisting of top and bottom suspensions. Top suspension consists of two rubber bumpers. Bottom suspension consists of two bumpers made up of helical or conical springs. Sound absorbing material represents a plate from mineral cotton on basalt base stock faced by sound-transmitting material over its entire surface. Piece acoustic absorber is made as rigid carcass attached to cabin ceiling by hooks or on ropes. Acoustical ceiling consists of rigid carcass suspended on ceiling. Inside the carcass, sound-absorbing material wrapped by sound-transmitting material is placed. Perforated sheet is attached to the carcass. Additionally, sound absorbers are located under suspended acoustical ceiling.

Ship cabin acoustic surface finishing

Cabin comprises metal built-up carcass consisting of bearing section structures accommodating sound-and-vibration insulating elements. Every said element includes layers of antivibration material on bitumen substrate, layer of sound absorbing material and perforated decorative panel. Air gap is formed between panel and said layer of porous sound absorbing material. Cabin carcass is jointed with ship bearing structures via antivibration system consisting of top and bottom suspensions. Top suspension consists of two rubber bumpers. Bottom suspension consists of two beaded meshed vibration isolators. Sound absorbing material represents a plate from mineral cotton on basalt base stock faced by sound-transmitting material over its entire surface. Standard noise absorber is made up of rigid carcass secured to cabin ceiling by hooks or cables to comprises elements with sound absorbing material wrapped by said sound-transmitting material and arranged in perforated surface.

Removable transport and rescue diving lug

Removable transport and rescue diving lug for placement and transportation of rescue submersible vehicle on the submersible carrier comprises a housing in which the mine is located to install submersible rescue vehicle and transition in the housing of the submersible carrier, durable containers with decompression chambers and equipment, cylinders with compressed gas, providing service of the submersible vehicle and decompression. At least one of the decompression chambers is made diving, communicating with receiving-outlet compartment providing moving of the divers in the water and back. In the lower part of the lug housing a notch is made for the passage of divers and the diving turntable platform is located.

Versatile removable transport-rescue attachment

Removable transport-rescue attachment for accommodation and transportation submarine escape vehicle on underwater carrier includes body, transit shaft, solid containers with equipment, as well as compressed gas cylinders. The body of removable attachment consists of two parts. The upper part including equipment for rescue operations is constant, and the lower part is exchangeable and adapted by its form to lines of underwater carrier of designated project.

Device for hydrocavitation treatment of underwater surfaces

Device for hydrocavitation treatment of underwater surfaces comprises a dish-shaped platform with wheels and a jet propeller, a hand wheel for control of the device movement, a rotor mechanism, a unit pressing the device to the treated surface with the upper and lower coaxial flat discs with mutually overlapped openings, a collector for distribution of cavitation jets with radial tubular hollow spokes at which ends rotable cavitators and fixing elements are placed. The rotor mechanism is made as a hermetically sealed central hollow head with two unions, one of them is coupled to the line of working medium delivery. The jet propeller comprises a nozzle extension and tubular elements and an adjustable valve is installed between them. The first tubular element is connected to the other union of the central hollow head. The nozzle extension of the jet propeller is mounted at the end of the second tubular element. The collector for distribution of cavitation jets is coupled to the central head cavity. In the upper disc of the device pressing unit there are openings placed in circular zones with diameter d, and in the lower disc there are openings with diameter not less than d. At the upper disc there are gripping elements, which turn the disc. At the lower disc there are radial flat-topped lamellar screens placed at the angle of 10-70° to the treated surface.

Slow-going propulsion motor excited by high-coercivity magnets with direct fluid cooling and electric power supply and control from frequency converter

Slow-going propulsive motor excited by high-coercivity magnets with direct fluid cooling and power supply and control from frequency converter includes propulsive motor, shaft, reduction gear, electric power source and static converter of electric power parameters. Propulsive motor rotor is mounted directly on propulsive shaft, stator encircles rotor, and electromagnetic reduction is achieved by different number of stator and rotor pole pairs as well.

Electric propulsion ship system with two-screw propulsion unit with ring structure engines

Electric propulsion ship system contains switchboard buses connected via circuit breaker and reactance to reversible frequency converter. Two propelling motors are connected respectively to frequency converter with two separate output power circuits. Propelling motors with permanent-magnet excitation have ring structure. Fixed pitch propellers are installed in rotor pockets of each motor. Blades of the first propeller are made with opposite turn to blades of the second propeller. Frequency converter contains controlled input rectifier whose power output is connected with condenser-type accumulator of direct current section, voltage sensor of direct current section with power inputs of two inverters, as well as two frequency setting device. Frequency converter components control is executed using local control system.

Method for construction of reinforced concrete deck intersection with large span

Method of construction of reinforced concrete deck intersection with large span includes assembly of prestressed unitised units containing channels, through which reinforcing cables are stretched and then tensioned and channels are injected. Seals are installed on the joined surfaces of prestressed unitised units, reinforcing cables are stretched into the channels of upper and lower shelves of prestressed unitised units, prestressed unitised units are tensioned in two horizontal planes by means of tension of cables, and interunit joints are injected by cement mortar in conjunction with channels.

Method to provide electric energy to consumers under conditions of freezing arctic seas and complex of technical means for implementing method

Inventions relate to the field of electric energy supply of stationary underwater objects under conditions of freezing seas. To provide electric energy to consumers, floating power unit and receiving-transmitting device are transported to the area of electric energy consumption. Then, it is connected via the power electric cable with consumers and with power unit. Power unit is installed in the surface condition by means of anchor lines with deadline anchors with the possibility of submersion to the depth inaccessible to ices by filling the tanks of main ballast and singling of anchor lines with small positive buoyancy, which provides an opportunity of emergency upfloating, and before installing it on the bottom, supports are lowered and negative buoyancy is given to floating power unit, taking water ballast into special tank. Power unit is serviced by means of icebreaking supply vessel and submersible vehicles based on it. Complex includes icebreaking supply vessel with underwater vehicles, underwater buoy catcher, receiving-transmitting device, as well as floating power unit with high-current connector, tanks of main ballast, special tank, anchor lines with dead anchors, supports to be installed on the bottom, and splash boards for landing of submersible vehicles.

Device for destruction of moored mines

Device comprises a grip and an alarm element about the location of mine, made in the form of a sonar beacon. Additionally the cutter with a drive is mounted, controlled by a command from the supplying ship. The sonar beacon comprises a power supply, the channels of emitted and received signals, the encoder, and the pressure sensor.

Membrane cargo capacity for liquefied natural gas transportation and storage

Invention relates to transport shipbuilding, means for marine freight and storage of liquefied natural gas (LNG) and concerns design of membrane cargo capacity for its transportation and storage. Reservoir for transportation and storage of LNG includes structured thermally insulated shell mounted on carrying structure of freight vessel or capacity. The shell consists of several layers. In this structure, one layer is metal and sealed and contacts with liquefied gas being transferred or stored. The layer contains undulating corrugations. Wave tops and troughs form zigzags. Undulating indents between corrugations on the outside are filled with porous synthetic material or paste based on chopped glass fibre and binding agent.

Device for separation of signal caused by effect of vertical component of earth magnetic field on on-board system of magnetic field monitoring for underwater objects

Invention refers to demagnetising of underwater objects and deals with compensation of vertical component of earth magnetic field during on-board monitoring system adjustment, including self-monitoring systems, for magnetic field of underwater objects. Device is made in the form of plat horizontal conductive circuit with positive floatation and dimensions exceeding length and width of underwater object; flat conductive circuit is submerged under water surface and fixated in that position along the perimeter by cables and anchor loads so that the device plane passes through the centre of underwater object volume. Geometrical centre of flat conductive circuit should coincide with the centre of underwater object volume.

Towed marine transport system for sea-based objects delivery

Invention relates to shipbuilding, more specifically to means providing metacentric stability and insubmersibility of sea-based objects during their delivery to operational area with subsequent installation on underwater foundation, and can be used, in particular for objects for which providing the mentioned navigability properties is not required during operation in water area. In the towed marine transport system, pontoons are interconnected in tandem with formation of contour fully or partially incorporating an object being transported, where pontoon interconnection is made using detachable articulated joint with one degree of freedom installed on adjacent pontoons with possibility of their relative rotation in horizontal plane, and connection of pontoons with an object being transported is implemented by means of fixing devices having at least two mutually spaced detachable assemblies for fastening the fixing devices to transported object and at least two detachable assemblies for fastening the fixing devices to pontoons.

Marine ice-resistant platform hull

Invention relates to shipbuilding and concerns protection of marine ice-resistant platform hulls against external ice impact. Marine ice-resistant platform hull has reinforced, predominantly vertical, ice sheathing with stiffening set and is provided with rigid elements with triangle cross-section installed on sheathing surface and placed on its surface with creation of multiturn spiral which has generatrix inclination angle to horizon of 10÷70 degrees and spiral pitch not exceeding 1/3 of maximum ice thickness in the area of platform operation. In this system, rigid elements are installed so that horizontal plane determining upper end of spiral is above platform design waterline, and horizontal plane determining lower end of spiral is under platform design waterline where distance in height between planes of upper and lower ends of spiral is not less than 1/2 of ice thickness in the area of platform operation.

Automated ship-heeling system

Working body is made in the form of piston located in cylinder tube laying crosswise the ship diametral plane. The piston at its butt ends has fixating dampers for which in cylinder tube butt ends the mating fixing sockets are formed which sockets are located with possibility to provide gap between butt end of piston-working body and inner butt end of cylinder tube. End position sensors of piston-working body are placed in butt ends of cylinder tube, their outputs are connected with inputs of computing device. Slot-type gap space of one cylinder tube end is communicating via pipeline with discharge and suction pump fittings via solenoid valves, and the slot-type gap space of its other end is also communicating via pipeline with discharge and suction pump fittings via other similar valves. In this system, cylinder tube with piston-working body, pipelines with solenoid valves and pump chambers are fully filled with liquid having specific weight that is less than specific weight of piston-working body. The system is equipped with trim indicator and draft indicator the outputs of which, as well as clinometer output are connected with inputs of computing device the outputs of which are connected with inputs of solenoid valves and pump via adapters.

Marine ice-resistant process platform

Marine ice-resistant process platform comprises overwater part with horizontal areas and process equipment installed on them, underwater part made as water displacing hull, anchor holding system allowing platform to turn relative to vertical axis, ballast tanks located in water displacing hull. The ballast tanks are located throughout the length of water displacing hull. Overwater part is made as fore and after towers where the upper part of towers in ice waterline region is made as ice-breaking cone facing by its narrow part down, and the lower part - for instance in the form of cone facing by its narrow part up. Distance from sea level during operation in ice conditions to upper part of water displacing hull is greater than maximum possible draught of ice formations. Axis of anchor holding system is located in the region of fore tower.

Control over ship weapons complex

Proposed method consists in measurement of track velocity, ship course and roll angles, guidance platform angles and angular velocities. It comprises the distance between lift-and-turn guidance platforms and weapons in course, altitude, range to target and capture plane. Said magnitudes are computer inputs to refine control beam angular position. Said beam is misaligned with aiming line at missile start and aligned with refined position for missile unguided flight. After missile capture, control beam is returned to position aligned with aiming line. Ship weapons complex comprises guided missiles with control units and gun, target automatic tracker, data display, roll parameter transducer, control unit, computer and lift-and-turn guidance platform. Said guided missiles with control units and gun are mounted at lift-and-turn platform with drive. Said lift-and-turn platform is mounted at ship mast and comprises drives and azimuth and elevation angle transducers, TV thermal imager, laser beam unit and radiation receiver. Radiation receiver is electrically connected with control unit input and optically with laser beam unit output.

Submarine

Submarine comprises container deep diving with cover, cover drive and seal accommodating the drone with control system and jet engine. Container is secured at submarine by attachment that can be unlocked and is connected via electric line with submarine control system. Submarine control system electric communication lines are connected with the drone control system and container cover drive and seal via extra draw away connector with components secured at submarine and container. Container displacement is selected subject to the condition of its positive buoyancy. Note here that container inner volume nearby its cover should have free space so that centre of water pressure forces at submerged container is located closer to container cover relative to centre of gravity.

Natural gas tanker to be used, mainly, in arctic waters

Invention relates to marine ships, particularly, gas tankers intended for liquefied natural gas transfer and storage at low temperatures. Gas tanker comprises several tanks arranged in cargo spaces arranged along the ship lengthwise direction. Tanks feature cylindrical shape with end face bulkheads and with lengthwise axis oriented in vertical. Note gas tanker features ice-breaker bow with waterline angle of entry relative to tanker centreline plane while its stem features the angle of inclination to waterline not exceeding 30 degrees. Tank material represents aluminium-magnesium alloy, primarily of grade 1561.

Container vessel hatchless cargo space compactor

Proposed system of compactors comprises soft inflatable vessels of strong oil-and-gasoline-resistant airtight material in length comparable with length or width of containers laid along their walls above the deck. It includes transient-control valves for container inflation and pressure release. Compressed air pipeline is arranged on the deck and includes valves with quick-release joints to connection via hoses with inflatable vessel adapters. Lengthwise inflatable vessels are located inclined ay ship bow and stem from cargo space hatch opening. Soft inflatable vessels have fasteners with small cables equipped with magnetic for suspension. When inflated, said vessels make a tight seal between the walls of containers, between container walls and inner surface of cargo space hatch opening coaming.

Marine electric power plant

Marine electric power plant comprises main engines or turbines, main synchronous generators, stator windings, automatic circuit-breakers, the main switchboard, transformers, frequency converters, power supply lines, propulsion motors. The primary windings of three-phase transformers are connected to three-phase lines of the main switchboard, the secondary three-phase windings of the transformers are connected in parallel to the three-phase line of the switchboard for the remaining shipboard consumers as well as an emergency diesel generator, which stator winding through the automatic circuit-breaker is connected to the supply line of the emergency switchboard. Two and more synchronous generators are coupled to the shaft of each main diesel engine or turbine, and each generator has an independent voltage stabilisation system.

Hydrojet device for conversion of mechanical energy of ship's oscillating motion to hydrojet energy

Hydrojet device includes a water passage with nozzles formed with vertical side walls and flat plates. The water passage is divided at least into two cascades. Each successive cascade has bigger height. Cascades are connected to each other by means of connection planks. Each cascade of the water passage has upper and lower outside channels, at least one upper inner nozzle, one lower inner nozzle and one central nozzle. An inlet water intake hole of the central nozzle is located vertically and perpendicular to the longitudinal axis of the water passage. Connection planks are inclined to the longitudinal axis of the water passage in a vertical plane. The water passage diverges along the longitudinal axis of the water passage in a horizontal plane. Flat plates are bent symmetrically and in a convex manner relative to the longitudinal axis of the water passage in a horizontal plane so that a blunt angle is formed. Water flow turbulisers formed with spiral-shaped vertical strips are installed on the outer side of the side walls of the water passage.

System for detecting and locating human suffering distress in water

System comprises a lifejacket on human and equipment placed on board of the helicopter. The lifejacket comprises light sources (1) and (2), a source (3) of energy, the membranes (8) and (9), the levers (10) and (11) with contacts (12), (13), the air cavities (15), (16), transmitters (19), (20), the transmitting antennas (21) and (22). The equipment placed on the board of the helicopter, comprises the receiving antennas (23), (24) and (25), mixers (26), (27) (29) (40) (61), oscillators (26) and (39), amplifiers (30), (31), (34), (62) of the first intermediate frequency, multipliers (32), (33), (37), (65), the narrowband filters (35), (36) (44), (51), (66), (72), (73), the delay line (38), the amplifier (41) of the second intermediate frequency, the amplitude detectors (42), (67), (74), (75), the unit (43) of registration, the phase detectors (45), (79), the phase meters (46), (47), the engine (48), the reference generator (49), the arithmetic unit (50), the phase inverters (52), (55), (58), the adders (53), (56), (59), (64), (81), the phase shifters (60), (63) for 90°, the key (68), the calibrator (69), the adjustable phase shifters (70), (71), subtractors (76), (82), the filters (77), (80) of low frequencies, the unit (83) of dividing, the threshold unit (84), the trigger (85), the generator (86) of counting pulses, the AND gate (87), and the counter (88) of pulses.

Wheeled catamaran

Wheeled catamaran includes two floating bodies interconnected by connecting bridge, paddle-wheel or wheels, one or more engines technologically connected with paddle-wheel or wheels by means of drive, one or more rudders. Floating body has shape of not-streamlined contours in the form of irregular polygon, herewith, paddle-wheel or wheels are installed between floating bodies in its narrowest part.

Launching of drone from submarine

Proposed method of drone launching from submarine comprises attachment of container to submarine hull, opening the container cover at surface, loading the drone into said container and sealing its cover, submarine diving and floating to preset drone launch area and emersion to launching depth, opening the container cover and drone launching. Said container is attached to submarine hull in plug-in manner. Container displacement is selected proceeding from its positive floatage with drone fitted therein. Note here that container inner volume nearby its cover should have free space so that centre of water pressure forces at submerged container is located closer to container cover relative to centre of gravity. Prior to launching attachment of container to submarine hull is released. Container cover is opened and drone is launched after container surfacing and submarine floating from launching area.

Marine propulsive arrangement with power accumulator

Invention relates to electrical drives designed to transfer power from primary thermal engine to propulsors. Proposed complex comprises thermal engine, first shaft, variator and second shaft whereat screw propeller is fitted. Said variator incorporates first unipolar generator and second unipolar generator, not engaged mechanically, and third unipolar machine fitted on hollow shaft rung in bearings or magnetic suspensions coaxially with first or second shaft. Power accumulation flywheel is fitted on the same shaft. RPM transducers are fitted on all shafts. Said transducers are connected with control system whereto excitation windings of unipolar machines are connected as well as thermal engine rpm control unit. Subject to control signals this machine runs in engine or generator mode while flywheel accumulates or outputs the accumulated power.

Ship electric power plant

Invention relates to shipbuilding, specifically to ship electric power plants with shaft generators. Ship electric power plants includes the first thermal engine, the second thermal engine, shaft generator, the first, the send and the third shafts, variator connected with screw-propeller, control system, power lines, rotational speed sensors. The variator comprises three electrically interconnected unipolar machines. Herewith, rotor of shaft generator is fixed on the third shaft which is made hollow and installed coaxially to the third shaft using bearings or electromagnetic suspension. Also, rotational speed sensors are installed on all three shafts which sensors are connected with control system which is also connected with starter control input, exiter of shaft generator and excitation winding of unipolar machines, as well as control inputs of decouplers, circuit breakers, and first thermal engine rotational speed control unit.

Overwater platform for lifting and handling cargoes from water area bed, including hazardous cargoes

Invention relates to facilities for lifting from water area bed and handling submerged cargoes, recycling solid and liquid substances including hazardous, for bed decontamination including removal of chemically active and toxic substances, for unloading submerged vessels their dismantling and lifting. Overwater platform is made capable to move across water surface. It contains facilities for dynamic positioning and position fixation, pipeline with water intake, system for bottom layer water pumping from the place of underwater works, system of water impurity composition sensors, facility for cargo lifting from bottom, as well as robotised and automated systems of cargo transportation and packing, system for handling and recycling cargoes and substances lifted from bottom as well as electric energy source and control system for underwater devices working at the bottom, and platform wireless remote control system.

Method of transmitting signals on under-ice accident using hydroacoustic signalling device and apparatus for realising said method

Invention relates to search and underwater engineering work in the presence of a continuous ice cover in the region of an accident at an underwater facility, e.g. a submarine vessel. The method is based on transmitting acoustic signals in an aquatic environment. A signalling device is connected to a buoy by a strong cable, e.g. Kevlar; an article is shot through a torpedo launcher or released by a locking device from the body of the carrier, wherein the buoy floats to the ice surface, and the signalling device, which lies on the required level of propagation of sound waves, is triggered by a code signal for radiation. The device for transmitting a signal on an under-ice accident over a hydroacoustic channel by mounting the signalling device at a given depth includes a buoy. The buoy is equipped with a synthetic cable of given length, which is tied to the signalling device to hold said device at a depth of the area of the underwater audio channel, wherein the buoy floats and is pressed to the lower edge of the ice.

Method for creating conditions for life and activities in special naval pressurised module

Invention refers to underwater navigation physiology and can be used for the purpose of creating conditions for submariners' life and activity in the period of endurance of submarines. A method for creating conditions for an individual's life and activity in a special naval pressurised module involves using a flame-resisting moderate hypoxic oxygen-nitrogen medium containing oxygen 16±1%, with its parameters to be controlled; for the purpose of providing a higher submariners' fitness to work a gas pressure is increased in a submarine compartments up to 120 kPa with an oxygen partial pressure maintained at the moderately hypoxic level of 18.6-19.8 kPa, and a nitrogen partial pressure - at 100.2-101.4 kPa. Increasing the submariners' fitness to work effectively if staying under conditions of the moderate hyperbaric hypoxia for a long time is ensured by activating processes of adaptation and increase of the functional body reserves.

Water bike

Water bike includes floats fasten together by cross-members, seat and pedal propulsor. The pedal propulsor is equipped with driving sprocket, swinging arm, set of enveloping sprockets, steering tiller, console axle, bushing with driven sprocket, freewheel clutch, screw-propeller and round-link welded calibrated chain. The steering tiller is made capable to rotate on axle which is mounted on rear cross-member. The swinging arm is connected with steering tiller via axle and capable to be reclined. On console section of axle bushing is installed which is rigidly connected with drive sprocket. The bushing is made capable of axial rotation and interaction with screw-propeller via freewheel clutch. Driving sprocket is installed on pedal propulsor and interacts with round-link welded calibrated chain. Branches of round-link welded calibrated chain are hitched over set of enveloping sprockets and close on driven sprocket which is immovable relative to bushing. Enveloping sprockets make mutually perpendicular pairs whereas two pairs of enveloping sprockets are located in the plane perpendicular to driving sprocket plane.

Control over integral ship electric power system (ieps)

Data on the state and IEPS parameters and that on screw propeller drive and other consumers and ship navigation conditions are processed to calculate forecast load variation. Starting including forestalling, outage and actuation for parallel operation of generators are controlled with die allowance for their required quantity sufficient for supporting of IEPS operation, ship motion control parameters and navigation conditions. Minor consumers ON/OFF control is executed to ensure the efficient operation of generator units and higher quality of supply voltage. Dynamics of acceleration and deceleration of screw propeller and its drive is controlled subject to ship motion, navigation conditions, current and forecast electric power and quality parameters. Dynamics of turn of steering house, if any, is controlled depending on generated and forecast power of generator units.

Test bench for full-scale tests of complicated ship weapons hardware complex (swhc) and method for analysis, development and preparation of full-scale tests of complicated ship weapons hardware complex

Test bench allows execution of research, development and preparation of full-scale tests of SWHC prior to actual physical integration of SWHC components on their future combined operation platform, that is, combat ship and represents a multi-site distributed test bench. Its comprises regional test bench composed by benches of separate regional makers and central control test bench to organise operation of test bench as an image of actual SWHC operation at its future operation platform. All said test benches are interconnected via data exchange lines operating similar to ship data exchange system in compliance with real protocols of info interface between SWHC components and rear flows of data exchange there between. Method of execution of research, development and preparation of full-scale tests of SWHC is characterised by the use of future combined operation platform, that is, combat ship and represents a multi-site distributed test bench.