Waterborne vessels (B60V3/06)
B60V3/06 Waterborne vessels(111)
FIELD: transportation.SUBSTANCE: method for destructing the ice cover by a vessel in a compressed air flow is proposed and done by excitation of resonant bending-gravity waves in the ice when the vessel moves. Simultaneously with the translational movement of the vessel an additional load is applied to ice, which is directed downwards and forming a gas-dynamic jet from the high pressure impeller, the nozzle of which is located below the bottom of the hull at an angle in a vertical plane to the longitudinal axis of the vessel and perpendicular to the horizontal, from fastened movable horizontal partitions on the axis of rotation, located in the forebody and after body of the vessel through the simultaneous fore-and-aft balance of the vessel by the stern. The high-pressure jet is sufficient to create maximum fore-and-aft balance of the vessel by the stern, resulting from the pressure of the gas-dynamic jet at a given height of opening of movable horizontal partitions that create aerodynamic lift capacity on the forebody of the vessel.EFFECT: invention helps to increase the efficiency of ice cover destruction.3 cl, 3 dwg
FIELD: transportation.SUBSTANCE: device for reduction of the hydrodynamic resistance of a ship hull bottom in a compressed air stream, containing a body, a high-pressure air pump, a steering device, side skegs is proposed. The bottom of the streamlined hull is protected by a layer of material, complete with single elastic rods and/or fibers, freely protruding with their one end and made of elastic polyethylene materials in the form of a brush and fastened tightly with the protective coating material.EFFECT: reduction of resistance to movement of the ship in compressed air flow and increase of its heading stability.2 cl, 5 dwg
FIELD: transportation.SUBSTANCE: device comprises bottom made of parts at different angles, rudder, a longitudinal air intake duct of the delivery device in the form of the impeller, the air is supplied from the nozzle at an angle under the bottom of the ship, and a pivoting flap pneumatic channels. Wherein a bottom side skegs additionally equipped inside with longitudinal flow channels made in the form of a hollow or open pipes installed at the end of the curved active nozzles that are oriented at an angle in the direction of movement air dynamic high-pressure jet exiting the transient two-phase nozzles disposed in the middle of a bottom open bottom of the housing.EFFECT: improved handling and stability of the ship, nautical, simplicity.3 cl, 4 dwg
FIELD: transportation.SUBSTANCE: simultaneously with the forward movement the ship at a resonance speed makes a circulation during a time equal to the period of the resonant flexural-gravity waves.EFFECT: higher efficiency of ice breaking.2 dwg
FIELD: transportation.SUBSTANCE: aerodynamic vessel is proposed, which comprises a body with longitudinal side compartments having upper and lower grids, in which vertical lifting propellers are arranged. The engine is placed in the front body part and is cinematically connected through the main gearbox with the vertical lifting propellers, and through the geared variator - with longitudinal motion propellers. The vessel incorporates the navigation control system and the course-keeping ability control system. The design features of the vertical lifting propellers and the longitudinal movement propellers drive geared variator are disclosed.EFFECT: improved technical characteristics and performance of the aerodynamic vessel.31 dwg
FIELD: transportation.SUBSTANCE: invention relates to air-cushion rescue vehicle and regards the rescue vessels construction. Air-cushion rescue vehicle includes a sound-absorbing element of stamp-welded frame of low noise ship cabin, in which the sound, vibration, heat insulated packages elements are installed.EFFECT: lower level of noise and vibrations.7 dwg
FIELD: medicine, rescue appliances.SUBSTANCE: invention refers to the air-cushion rescue vessels and concerns structures of hulls of rescue vessels. The air-cushion rescue vessel contains an acoustic dissipation component of a metal pressed-and-welded frame of a low-noise shipboard cabin, in which packages of sound-vibration-heat-insulation components are installed.EFFECT: rescue vessel with reduced noise level.7 dwg
FIELD: mechanical engineering.SUBSTANCE: invention is relevant to the field of shipbuilding and concerns designing ship hull of duct- and hydro-keel type. The proposed ship hull of duct- and hydro-keel type is equipped with above- and underwater parts of hull with curved board below constructive waterline; and bottom, which is provided with longitudinal duct equipped with upper horseshoe-like arch and vertical walls. Movable enclosure of forward end is manufactured according to type of retractable multilayer balaclava, which is equipped with mechanism for lifting and descent. Movable enclosure of aft end is manufactured in the form of flat system that is two-ply and fixed with the aid of bends on rod and/or on tube of elastomer canvases, which free ends lay on top of each other. Nearby ship forward- and aft ends two high-pressure air pumps are mounted on axis suitable for fixed deviation from vertical line by 30° at most within longitudinal plane of ship. Movers of hydro-jet type placed in underwater housings are manufactured according to hollow cross-flow scheme, when rotor part of mover is of discontinuous and ring type and built into stator part.EFFECT: proposed invention results in increase of performance parameters of ship belonging to duct- and hydro-keel type.3 dwg
FIELD: transportation.SUBSTANCE: vessel of an air cushion is a "П"-shaped body in the cross section, having flexible barriers or rigid mechanical dampers in the fore and aft end, and equipped with a system of air superchargers for air injection under the bottom of the vessel body. At the same time the body is made hollow and vacuumized with rounded corners, along submerged walls of which there is a system of each pitch of driving pins is mounted at oblique angle, with a system of replaceable pneumatic chambers fixed on driving pins that have an inner diameter comparable to the cross dimension of the vessel body. Pneumatic chambers are laid on the vessel body along the diameter and are fixed in pairs by bends on driving pins.EFFECT: improved weight lifting capacity and buoyancy of a vessel with low pressure in an air cushion.2 cl, 1 dwg
FIELD: transport.SUBSTANCE: invention relates to air-cushion vehicles. The vehicle comprises a high pressure air blower under the flat bottom between the floats, which form a skirt. Skirt is two hollow oval-shaped or elliptical pipes looped at the waterline level and allowing evacuation. The long axes of elliptical or oval-shaped in plan pipes lie in a common longitudinal plane and may be parallel to each other or may lie on a common axis. A pin teeth equal increment system is installed on pipes, where a pneumatic chamber system is mounted with chamber internal diameter comparable with the outer diameter of the pipe. Pneumatic chambers are stacked along the diameter and fixed by pairs on the pin teeth.EFFECT: achievement of unification and simplification of manufacturing technology and application of the hovercraft vehicle skirt.2 cl, 2 dwg
FIELD: ship building.SUBSTANCE: invention relates to shipbuilding, particularly, to designing ships of the tunnel-sidewall craft type and can be used in construction of landing craft. Proposed is a ship of the tunnel-sidewall craft type comprising a hull having a bottom with a longitudinal tunnel provided with an upper U-shaped arch with generatrices parallel to the ship centerline plane, in the fore and the aft ends there are movable enclosures, in the hull there is a high pressure air blower, in the waterline plane there are onboard rotary propulsors having a stationary shell covering the upper part of the propulsor and a shell moving around the axis of the propulsor covering the lower part of the propulsor in motion of the ship in the cruise speed mode.EFFECT: technical result from using the present invention is improvement of operational characteristics of the ship of the tunnel-sidewall craft type.1 cl, 2 dwg
FIELD: ice-technology.SUBSTANCE: invention relates to ice-technology, particularly to ice breaking. Method of ice breaking is performed by air-cushion ship during its movement over ice with resonance speed. After excitation in ice of resonance flexural-gravity waves ship, within moving behind it with resonance speed first wave trough is imparted additional periodic reciprocating movements in direction of its movement with frequency of resonance flexural-gravity waves. Movements are provided maximum within wave troughs, that is equal to half their length, and ship is imparted lengthwise rolling with frequency of resonance flexural-gravity waves.EFFECT: technical result consists in improvement of efficiency of ice breaking.1 cl, 1 dwg
FIELD: ice-technology.SUBSTANCE: invention relates to ice-technology, particularly to ice breaking. Method of ice breaking is performed by air-cushion ship during its movement over ice with resonance speed. At that after excitation in ice resonance flexural-gravity waves ship within moving behind it with resonance speed first recess of waves is imparted additional periodic reciprocating movements in direction of its movement with frequency of resonance flexural-gravity waves. At that movements provide as maximum within recesses of waves, i.e. equal to half their length, and pressure in the air-cushion of ship is periodically changed with frequency of resonance flexural-gravity waves.EFFECT: technical result consists in improvement of efficiency of ice breaking.1 cl, 1 dwg
FIELD: shipbuilding.SUBSTANCE: invention relates to ice-technology, particularly to ice breaking. Method of ice breaking is performed by air-cushion ship during its movement over ice with resonance speed. After excitation of resonance flexural-gravity waves in ice, to ship within first wave trough moving behind it with resonance speed are fed periodic reciprocating movements in direction of its movement with resonance frequency of flexural-gravity waves. Movement is provided maximum within wave troughs, that is equal to half their length, and ship during its movement after passing wave troughs are generated pitch up.EFFECT: higher efficiency of ice breaking.1 cl, 1 dwg
FIELD: shipbuilding.SUBSTANCE: invention relates to ice-technology, particularly to ice breaking. Method of ice breaking is performed by air-cushion ship during its movement over ice with resonance speed. After excitation of resonance flexural-gravity waves in ice, to ship within first wave trough moving behind it with resonance speed are fed periodic reciprocating movements in direction of its movement with resonance frequency of flexural-gravity waves. Movement is performed within a quarter wavelength.EFFECT: higher efficiency of ice breaking.1 cl, 1 dwg
FIELD: shipbuilding.SUBSTANCE: invention relates to ice-technology, particularly to ice breaking. Method of ice breaking is performed by air-cushion ship during its movement over ice with resonance speed. After excitation of resonance flexural-gravity waves in ice, to ship within first wave trough moving behind it with resonance speed are fed periodic reciprocating movements in direction of its movement with resonance frequency of flexural-gravity waves. Movement is provided maximum within wave troughs, that is equal to half their length, and at moment of repeated passage of vessel bottom bending-gravity wave of its body generates vertical shocks at ice cover with frequency of resonance flexural-gravity waves.EFFECT: higher efficiency of ice breaking.1 cl, 1 dwg
FIELD: shipbuilding.SUBSTANCE: invention relates to ice-technology, particularly to ice breaking. Method of ice breaking is performed by air-cushion ship during its movement over ice with resonance speed. After excitation of resonance flexural-gravity waves in ice, to ship within first wave trough moving behind it with resonance speed are fed periodic reciprocating movements in direction of its movement with resonance frequency of flexural-gravity waves. Movement is provided maximum within wave troughs that is equal to half their length, simultaneously, vessel is rotated about vertical axis with frequency of resonance flexural-gravity waves.EFFECT: higher efficiency of ice breaking.1 cl, 1 dwg
FIELD: machine building.SUBSTANCE: invention relates to ice-technology, particularly to ice breaking. Method of ice breaking is performed by air-cushion ship during its movement over ice with resonance speed. Note here that after excitation in ice resonance flexural-gravity waves ship within moving behind it with resonance speed first recesses waves is additional periodic reciprocating movement in the direction of its movement with frequency of resonance flexural-gravity waves. Movements provide maximum within waves recesses, i.e. equal to half of their length, a ship when performing movements turned through 90° relative to its initial direction of motion.EFFECT: technical result consists in improvement of efficiency of ice breaking.1 cl, 1 dwg
FIELD: shipbuilding.SUBSTANCE: invention relates to ice-technology, particularly to ice breaking. Method of ice breaking is performed by air-cushion ship during its movement over ice with resonance speed. After excitation of resonance flexural-gravity waves in ice, to ship within first wave trough moving behind it with resonance speed are fed periodic reciprocating movements in direction of its movement with resonance frequency of flexural-gravity waves. Movement is provided maximum within wave troughs, that is equal to half their length.EFFECT: higher efficiency of ice breaking.1 cl, 1 dwg
FIELD: transportation.SUBSTANCE: invention relates to amphibious vehicles. Amphibious ship on a compressed pneumatic flow comprises a bottom made of parts at different angles, and rudder consists of shields. In the afterbody above the steering device there is a horizontal flow-directing element in the form of a U-shaped apron located above the rotary shield with horizontal rotation axis to form a slot between the edge of the apron and two steering devices. End of the apron is arranged inclined towards the rotary shield secured to the rear wall of the stern and is located at the same level of the pneumochannel bottom. Air pressure is created by an impeller and is differentially discharged from an additionally created channel at the outlet between the steering devices. Ship bottom in the form of a pneumochannel in the cross-section is made in the form of an inverted semicircle. Lateral skegs on the outer side are made at an angle. Additional side skegs all along the inner side are made attached by thin extending vertical side walls with the possibility of coordinated control.EFFECT: provided is efficient suppression of path changes of the stable air flow, safety, simple control, increased speed, better controllability, reduced drag.6 cl, 3 dwg
SUBSTANCE: invention relates to water transport. Hydroaerodynamic propulsor consists of ship structure comprising a nose fairing with step, side and keel longitudinal blades, between which there are bottom guide wings, where working medium is pumped air forced through guide wings into water under ship bottom. Directed air flows generate thrust on water to form under bottom of ship dynamic air cushion. Lateral and keel blades are lowered below wing fixed on them, being in contact with water at gliding. Aft rudders arranged at ends of blades provide control of ship. First bottom guide wing arranged immediately behind step nose cowl is rotary.
EFFECT: improved controllability of ship, effective braking, providing backward motion of ship at low strokes, higher ship speed over water surface, efficient use of propeller drive power without dispersion of air flows.
2 cl, 5 dwg
FIELD: shipbuilding; machine building.SUBSTANCE: invention relates to ice-technology, particularly to ice breaking. Method of ice breaking is performed by air-cushion ship during its movement over ice with resonance speed. After excitation resonance flexural-gravity waves in ice, to ship within first wave trough moving behind it with resonance speed are fed periodic reciprocating movements in direction of its movement with resonance frequency of flexural-gravity waves. Movements are provided by maximum within wave troughs, that is, equal to half their length, and ship moves on a curvilinear path.EFFECT: higher efficiency of ice breaking.1 cl, 2 dwg
FIELD: transport.SUBSTANCE: invention relates to transport facilities using dynamic air cushion (AC) and concerns use in creation transport facilities for moving over water, snow and ground. Device for implementation of transport facility with AC travel mode and control includes high-pressure charger and nozzle device. Transport facility includes hull on which charger in the form of impeller is installed which charger forms gas-dynamic air jet of high pressure, the nozzle of which is located under hull bottom at an angle in vertical plane to longitudinal vessel axis and perpendicular - to horizontal. In pneumatic channels under bottom, compressed air is distributed and AC and dynamic thrust is generated. The device contains apron, shutters and disk wheels implementing control of generated hydro-gas-dynamic flows.EFFECT: simplicity of practical implementation of the method having high efficiency with improved controllability.3 cl, 5 dwg
FIELD: transport.SUBSTANCE: to provide extra compressed air pressure for air cushion vehicle air with impeller running as compressor high-pressure gas-dynamic jet is created to escape from impeller nozzle. Said jet is forced into bottom supply channel composed in plan of confuser with neck-like nozzle and directed between vertical sidewalls. Confuser-like channel with nozzle extra high-pressure gas-dynamic jet is generated by moving vertical flaps secured to confuser vertical walls.EFFECT: higher stability, reduced leaks from under the bottom, efficient operation thanks to maximum application of high-pressure compressed air at supply channel outlet.4 cl, 4 dwg
FIELD: transport.SUBSTANCE: proposed platform comprises submerged displacement module to support surface module by stiff support columns with bracing elements and tightening links secured at sea bottom anchors. Support columns with said bracing elements can be detached from submerged module to allow fast escape of the platform from ice-dangerous area and return to left point. Submerged module is composed of separate sealed pontoons interconnected by stiff links for mutual relative displacements. Said support columns are provided with mechanisms for coupling with submerged module pontoons for interlocking of said modules. Surface module load-bearing hull is provided with flexible guard arranged along its edges to create air cushion with receiver. Said guard is arranged at board hoop skirts secured to said hull Surface module comprises pressure and propulsive complexes with main engine with drives and aircraft variable-pitch propellers arranged in adapters.EFFECT: faster escape of the platform from ice-dangerous area and return to left point.
FIELD: transport.SUBSTANCE: ship hull has free hull and underwater hull with curvilinear boards below design waterline converting to the fore. Underwater hull has bottom with lengthwise tunnel provided with upper horseshoe-shaped surface and vertical walls extending along the ship hull under design waterline and with generating lines parallel with the ship centre line. Underwater hull cross-section profile along design waterline features maximum width at aft area. Lengthwise tunnel fore and aft ends are provided with at least one railing to turn and to be secured relative to the axis extending the are of contact between said top arched surface and vertical walls and perpendicular to the ship centre line. Every said moving railing can be retracted and released and stay at working position whereat closed zone is formed in lengthwise tunnel. Ship free hull accommodates at least one blower of air into said lengthwise tunnel.EFFECT: better propulsive properties and navigability.3 cl, 5 dwg
FIELD: transport.SUBSTANCE: ship hull aft lower section bottom, ahead of the rudder, has lengthwise ledged skewed towards the fore section and the blower air intake channel shaped to impeller. Air is fed from impeller nozzle to under the ship bottom at an angle. Said ledge is located aft lower medium part at the bottom centre to make two air channels on both sides between said ledge. Moving horizontal partition on the shaft is additionally fixed behind the impeller nozzle to extend the air channel towards skewed ledge. Rotary board is secured at horizontal shaft is secured to the bottom in the area of said ledge with air channels to abut on ledge bottom in closed state. Guides composed of ledges made up of two interconnected vertical plates are secured at outer side of ship boards. Rudder with board comprises extra second board articulated with and spring-loaded to the first board to turn in vertical plane.EFFECT: smooth start and run at low speeds, better navigability and mobility.2 cl, 8 dwg
FIELD: transport.SUBSTANCE: proposed vessel comprises hull with flexible air cushion railing. Said hull comprises lateral skegs, front and rear flexible elements and stiff boards. Besides, it includes the engine, propulsion and discharge units with the drive composed of a push-type axial propeller with blower in ring adapter and control system. Note here that the frame is rigidly secured behind said propeller while inflatable board is secured at the hull stiff sides all along the vessel perimeter. Said ring adapter is additionally provided with a stiff frame aligned with said ring adapter from outer side. Said extra frame is equipped with stiff supports and water turbuliser turbine running on the shaft and fitted at said supports. Said bladed screw turbine is fitted on the shaft with deflector and can be displaced over preset intervals relative to air density adjustment screw. Turbine profile is inscribed by at least invariable small radius with respect to axial air screw with blower.EFFECT: increased propulsion, better control.5 cl, 3 dwg
FIELD: transport.SUBSTANCE: catamaran comprises two parallel hulls with connection elements, venting unit with drive mounted at catamaran fore and channels for air feed from the plant. Both hulls feature a flat-bottomed design. Outlet ends of said channels are directed to hull bottom at acute angle. Note here that said outlets of channels are made in said bottom as crosswise slits or rows of holes made uniformly over the bottom length.EFFECT: higher speed, power savings in motion under water.4 dwg
FIELD: transport.SUBSTANCE: air cushion vehicle comprises hull, propulsion and discharge units, air cushion guard with fore and aft moving elements, side skegs and mid skeg to divide said area into LH and RH separate chambers. Discharge unit incorporates steering device to control air forcing into said chambers. Side and mid skegs are composed of two cases each. Note here that retractable rotary propulsors are arranged in every chamber between two cases.EFFECT: enhanced performances.4 dwg
FIELD: transport.SUBSTANCE: hovercraft comprises displacement hull with V-shaped bottom, central ski with transverse steps and lengthwise steps. The latter are arranged at vessel fore. Note here that bottom incorporates extra cleats extending from edges to mid point. Lengthwise steps are hollow and through design.EFFECT: higher speed and mobility.2 cl, 3 dwg
FIELD: transport.SUBSTANCE: proposed ship comprises hull with lengthwise lateral compartments accommodating vertical lift propulsors. Primary engine is arranged at ship hull fore-part and engaged with said vertical lift propulsors. Sustainer propulsor is arranged at hull stern part and engaged with horizontal motion propulsors. Ship incorporates navigation control system and course-keeping ability control system. Vertical lift propulsors feature identical design and comprise round case wherein rotor runs in bearings composed of the solid of revolution consisting of three integral parts separated by thin discs.EFFECT: enhanced performances.29 dwg
FIELD: agriculture.SUBSTANCE: invention relates to ice technology, in particular, to performing icebreaking works with air-cushion ships. During the low tide the air-cushion ship moves with the resonance speed along the shoreline at a distance from the edge of the cadder and excites the resonant flexural-gravity waves in the ice, at that the transverse periodic motion is transmitted to the ship, with an amplitude not exceeding the half of the wavelength of the static deflection of ice, and the frequency equal to the frequency of resonant flexural-gravity waves.EFFECT: increase of the efficiency of ice cover destruction.2 dwg
FIELD: transport.SUBSTANCE: invention relates to universal transport facilities that can move in various media. Amphibious planning vehicle comprises hull with cabin, engine compartment, screw propeller with protective ring and inflatable floats with blowers. Contact surface of the floats is equipped with protective shell arranged to flex over their length. Said hull is composed of a wing-type deck with small elongation that features sweepforward leading edge. Wing-type deck tail has flaps deflecting up and down and furnished with extending tail skids. With flaps moving down, said tail skids brake the vehicle on surface of motion. Wind-type deck inner space is filled with foam plastic and fuel tanks.EFFECT: higher speed and safety in planning, braking on ice and snow.3 cl, 3 dwg
FIELD: transport.SUBSTANCE: invention relates to ship building, particularly, to air-cushion craft destructing the ice cover by resonance waves. Air-cushion craft is displaced in selected direction at preset speed and, at a time, in sinusoidal path. Note here that in displacement in sinusoidal path, the craft is tilted to centers of curvature of said path.EFFECT: higher efficiency of ice breaking.3 dwg
FIELD: transport.SUBSTANCE: invention relates to ship building, particularly, to hovercrafts. Proposed joint comprises stiff structure composed of hovercraft hull stiff structural element edge strip and elastic shell attached thereto by fasteners to make hovercraft flexible guard. Said fasteners represent "П"-like clevises made of strong resilient material with their foot ends bent inside to make elastic spring-loaded hooks to lock the clevis. Said hovercraft hull stiff structural element edge strip is set to position approximating to normal line to the edge of as-stretched shell and has paired holes for clevis foot with hooks arranged along the joint length. Elastic shell panel edge is tucked under and clamped to make a pocket with perforated edge, perforation being aligned with holes in structural element edge strip through which clevises are run. Ends of clevises run through appropriate mate holes and ate fitted against the stop to lock engagement by latching ends of spring-loaded hooks.EFFECT: higher strength and reliability of joint.2 cl, 2 dwg
FIELD: transport.SUBSTANCE: invention relates to ship building. Proposed ship comprises hull with lengthwise lateral compartments accommodating vertical lift propulsors. Primary engine is arranged at ship hull fore-part and engaged with said vertical lift propulsors. Sustainer propulsor is arranged at hull stern part and engaged with horizontal motion propulsors. Ship incorporates navigation control system and course-keeping ability control system Vertical lift propulsors feature identical design, each comprises rectangular housing accommodating two identical lifting mechanisms arranged one above the other. Every said mechanism has rectangular box with open part directed upward. Several pairs of cylindrical drums are fitted on bearings in top section horizontally and in parallel. Gear is fitted on shaft of every drum while idle gear are fitted between gears to engage with two gears of two adjacent drums. Distance between drums makes 0.3-0.5 mm. Taper gears and drum vertical shafts on bottom lifting element engage with drums of top lifting element. Drums run in one direction. Porous elastic wear proof insert is fitted inside the box to get in contact with bottom surfaces of drums and box bottom.EFFECT: higher operating performances.25 dwg
FIELD: transport.SUBSTANCE: invention relates to air-cushion vehicles, namely, to hovercraft. Proposed craft comprises inflatable guard of cushion, hull, discharge unit with steering, cushion guard with bow and stern elements. Craft is equipped with extending guide device composed of bearing frame articulated to hull bottom bearing frame, hydraulic drive and disc wheel pivoted to said frame along hull lengthwise axis. Disc wheel axis in extreme extended position is located in lateral plane perpendicular to craft lengthwise axis to cross the point of application of resultant forces acting of craft.EFFECT: higher stability at side wind.5 dwg
FIELD: transport.SUBSTANCE: invention relates to ship building, particularly, to amphibious ships. Proposed device comprises housing with bulk separation platform, front and/or rear drive drums whereon fitted is elastic bearing closed belt with air floats across platform outer horizontal surface. It comprises also closed chamber between platform bottom surface and belt bottom flight that makes sealed air cushion communicated via air duct with air blower. Besides it includes closed chamber guard made up of flat walls closing gaps between belt flights and platform topl and bottom surfaces. It incorporates propellant engine articulated with front and/or rear drive drum. Belt side edges are conjugated with flat walls of bottom closed chamber side guards. Aforesaid drums are arranged between said guards. Platform is jointed with aforesaid flat inner walls of guards and articulated with drive drums. Platform is divided into watertight compartments to house engine, drum transmission and air blower. Air float inside pressure is lower than air pressure in closed air cushion below bottom closed chamber. Platform bottom surface is located above top envelop of belt operating shape. Side guards have skids with their level located not lower than horizontal tangent to circle arc of belt idle shape corresponding to its position without contact with support medium. Height of air floats resting on soil is set to provide for required clearance of skids with belt bottom support flight located between top and bottom envelopes.EFFECT: higher reliability and efficiency.4 cl, 10 dwg
FIELD: transport.SUBSTANCE: hovercraft consists of hull, inducer with steering gear and air ducts to supply air in air-cushions via side elements of flexible seal, made as flexible canvass sheets, stern flexible seal, bow flexible seal, side skegs, distributing collector. Collector is located over stern flexible seal with inlet part being connected to lower part of inducer and outlet part having air channels one of which is connected with side flexible seal cavities and the other - with air-cushion cavity. Air supply in side flexible seal cavities is performed from centre line plane to side skegs. Lower edges of canvass sheets are rigidly secured on hull bottom forming elastic air channels and bottom parts of canvass sheets have holes for outlet of air into air-cushion zone and for discharge of water or snow. Flexible longitudinal plates are installed on outer surfaces of canvass sheets outside holes. Outer edges of canvass sheets are secured on outer side of skegs.EFFECT: increase of hovercraft reliability and efficiency by diminishing of specific consumption of materials and weight of hovercraft, maintainability, performance and start characteristics, and cargo-lifting capacity improvement.5 cl, 4 dwg
FIELD: transportation.SUBSTANCE: air-cushion vehicle has a hull, pressure plant with a steering arrangement and air lines to feed air into air-cushion via the shipboard flexible guard elements made in the form of flexible panels with their top edge rigidly fastened on the hull, a flexible stern guard, a flexible head guard and sidewalls. The vehicle incorporates a distributing manifold arranged above the flexible stern guard with its inlet section being connected to the pump unit lower section. The outlet section consists of three systems of outlets, the first of them communicating with the side flexible guard spaces, the second one communicating with the stern flexible guard space and third one communicates directly with the air-cushion. Air if fed into the side flexible guard spaces from side of diameter plane towards the sidewalls. The panels lower edges are fastened to the vehicle bottom to elastic air channels. The panels lower part feature the holes letting air into the air-cushion and used also for water or snow disposal. The panels holes can be furnished with elastic nozzles arranged at 30° to 60° to the vehicle diameter plane with their outlets facing the air-cushion. Elastic lengthwise plates can be arranged on the panels outer surface.EFFECT: higher reliability, economy in use, damage tolerance and durability of flexible guard.3 cl, 5 dwg
FIELD: shipbuilding; building of hovercraft.SUBSTANCE: solid fore section of bottom of single-hulled hovercraft has many fore parts and each of them has flat lower keel. Transverse aft guard is connected with fore parts making use of inclined bearing surface and pair of external guards forming air chamber for charging it with compressed air for forming air cushion under water. Respective water ducts located between each pair of fore parts decrease energy of waves during operation. Sea-going single-hulled vessel has many fore parts forming the hull, many ducts for water flow located between fore parts, stern, one hull extending from fore section as far as stern, air pressure section, unit for directing the compressed air and unit for forward motion or towing. Section under air pressure is reliably isolated by fore parts and water duct at front end and, by ridges on sides and by stern on rear end.EFFECT: enhanced efficiency of watercraft operation due to combination of buoyancy with pneumatic and hydrodynamic forces supporting the vessel.23 cl, 14 dwg
FIELD: shipbuilding.SUBSTANCE: invention relates to air-cushion platforms for operation in polar regions. Proposed air-cushion platform has carrying body with air cushion guard arranged around and provided with receiver installed on side crinolines attached to body, pressure complex with engine, drive and centrifugal blowers of air cushion, control house with control station of pressure complex. Carrying body of air-cushion self-propelled platform is made in form of pontoon. Its upper surface is cargo deck with possibility of through passing. Platform is furnished additionally with pressure complex, propulsion complex with main engines with drives and aircraft air variable-pitch propellers in nozzles, and auxiliary gas-turbine engines for starting main engines, and system to control main engines of propulsion and pressure complexes of air cushion, fuel system, fire system and platform control system whose control stations are arranged in control house. Propulsion complexes are located in cargo deck in stern part of platform on either side. Pressure complexes are arranged on cargo deck in middle part of platform along its length on either side, being system of centrifugal air blowers located on one axle with the same drive as propulsion complexes. Steering complex of platform consists of aerodynamic rudders arranged vertically behind screw propellers and thrusters installed on either side in bow part of platform communicating with receiver of flexible guard. Aircraft gas-turbine engines type TB3 are used in drives of propulsion and pressure complexes, engines whose service life has expired can be used for this purpose.EFFECT: provision of ecologically safe air-cushion self-propelled platform of simplified design at reduced cost of its manufacture and operation.9 cl, 6 dwg
FIELD: shipbuilding; dynamically supported vessels.SUBSTANCE: proposed vessel has hull with navigator and passenger compartments, main engine mounted inside fore part of hull, propulsors for vertical lifting which are kinematically linked with main engine, cruising engine mounted inside aft part of hull and kinematically linked with two horizontal motion propulsors and control mechanisms. Vertical lift propulsors are similar in construction; each disk of these propulsors has lower smooth surface. Upper surface has alternating concentric half-round troughs and concentric half-round ridges. Each concentric half-round ridge is divided into several parts and each part has bevels at the front and at the rear with through vertical passages in between them; longitudinal axis of each of them lies at angle relative to lower surface of disk and in parallel relative to rear bevel of ridge standing in front of it. Height of concentric half-round ridges and depth of concentric half-round troughs are equal to radii of similar circles whose centers lie in one line which is equidistant from lower surface of disk. Two horizontal motion propulsors are similar in construction. Each propulsor is made in form of horizontal hollow cylindrical housing with reduction gear mounted in center; reduction gear has front and rear horizontal shafts on which front and rear groups of variable-pitch propellers is secured. Air propellers are mounted at some distance from one another. Diffuser mounted in rear part of hull is turned away from air propellers by its wide part.EFFECT: simplified construction of cruising engines; increased lifting force of vertical lift engines.27 dwg
FIELD: shipbuilding.SUBSTANCE: proposed aerodynamic craft has hull, propulsors for horizontal motion actuated by cruise engine, propulsors for vertical lift located in through vertical passages of hull and control system for steering the craft in space. Novelty of invention consists in form of each propulsor of vertical lift: propulsor has cylindrical body closed with grates at the top and at the bottom; vertical shaft mounted inside body is used for securing upper and lower pressure wheels; lower wheel is lesser in diameter. Each pressure wheel is made in form of bush secured on vertical shaft and connected with rim by means of spokes. Secured on upper surface of rim are air intakes whose inlet openings are open in way of rotation of pressure wheel; rim body has vertical passages according to number of air intakes; each vertical passage is made in form of Laval nozzle. Radial blades of straightening apparatus are located below each pressure wheel.EFFECT: improved aerodynamic properties.21 dwg
FIELD: shipbuilding; breaking ice cover by resonance method with the use of hovercraft.SUBSTANCE: proposed method is performed by hovercraft running at resonance speed along edge of ice cover; in the course of motion of hovercraft, craft is so positioned relative to profile of flexural gravitational waves by changing its speed that ultrasonic radiator is located under wave crest; said radiator is mounted inside hovercraft hull and is extended under ice cover when required. Then, ultrasonic radiator is switched-on for raising temperature and hydrodynamic pressure under crest of flexural gravitational wave.EFFECT: enhanced efficiency of breaking ice cover.
FIELD: shipbuilding; breaking ice cover by resonance method with the aid of hovercraft.SUBSTANCE: prior to starting ice breaking jobs, areas of ice cover of minimum strength are found and hovercraft runs over these areas at resonance speed breaking ice cover; then, hovercraft starts running over areas of ice cover of higher strength. Areas of ice cover of high strength are found with the aid of ultrasonic flaw detector showing thickness and structure of ice.EFFECT: enhanced efficiency of breaking ice cover.
FIELD: shipbuilding; breaking ice cover by resonance method by means of hovercraft.SUBSTANCE: proposed method includes running of hovercraft along edge of ice in shallow water at resonance speed at simultaneous measuring of water basin depth in front of ship and under her for correction of resonance speed depending on depth.EFFECT: enhanced efficiency of breaking ice cover by resonance method.
FIELD: ice breaking technique; breaking ice cover by resonance method with the aid of hovercraft.SUBSTANCE: proposed method is performed with the aid of hovercraft running at resonance speed. Ice cover is additionally acted on by radio radiation at frequency of 109 to 1010 Hz by means of generator which is located on extensible rod on board the ship. Generator forms hydraulic impact under highest point of crest of flexural gravitational waves and amplitude of this wave is increased when hovercraft runs along edge of ice cover.EFFECT: enhanced efficiency of ice breaking.
FIELD: ice breaking technique; breaking ice cover by resonance method with the aid of hovercraft.SUBSTANCE: proposed method is performed by means of hovercraft running at resonance speed. Ice cover is additionally acted on by radio radiation at frequency of 106 to 107 by means of generator which is mounted on extensible rod on board the ship. Temperature of ice is increased and its strength is decreased by operation of generator during performance of ice breaking work by resonance method.EFFECT: enhanced efficiency of breaking ice cover.