Air cushion vehicle
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.
The invention relates to shipbuilding and concerns the establishment of air-cushion vessels intended for operation in boggy places in the far North.
Known air cushion vehicle comprising a body, propulsion and injection setup, as well as fencing the area of air cushion with bow and aft movable elements, with side lower balloons and medium-sized skeg, partitioning the area of the airbag on the left and right separate chambers (Sat. Shipbuilding abroad. N3 (135), Leningrad Shipbuilding, 1978, p. 12, Fig.7 ). However, the known vessel has insufficient controllability, therefore, reduced the safety of its operation.
Also known air cushion vehicle (patent RU №2154586 C1, 20.08.2000 , US patent No. 3106260 And, 08.10.1963 ), which have a bearing housing placed around a flexible air-cushion, mounted on side crinolines attached to the body, complex injection-engine driven centrifugal blowers airbags, wheelhouse with steering position of the injection complex.
A similar structure is self-propelled platform hovercraft for operation in Arctic conditions (patent RU №2302354 C1, 10.07.2007 , in which the bearing body platform air cushion (PVP) is made in the form of a pontoon. It ver�the average of the surface is the cargo deck with a through passage. PVP is equipped with an additional injection complex propulsion systems having main engines with drives and aviation aerial variable-pitch propellers in nozzles, and auxiliary gas turbine engine to start the main engines, as well as system control of main propulsion engines and injection complexes airbag, fuel system, fire system and control system as a whole, the control of which is posted in the wheelhouse. Propulsion complexes are located on the cargo deck aft of PVP for each side and represent a system of centrifugal blowers that are located on the same axis and have the same drive train and propulsion systems. Steering PVP complex consists of vertically arranged for an aerial screw propellers aerodynamic rudders and installed each side at the bow PVP air thrusters which communicates with the receiver flexible fencing. In the propulsion drives and injection of the complexes used in aircraft gas turbine engines of the type TVZ. The technical result of this technical solution is the creation of environmentally friendly PVP simplified construction with reduced cost of its production and operation. However, the known device also has �dostatochno handling, in this connection downgraded the safety of its operation.
It is also known technical solution, in which the technical result from its implementation is to increase the safety of operation of the hovercraft by providing it with sufficient controllability (patent RU №2097231 C1, 27.11.1997 ).
This technical result is achieved in that the air-cushion vessel, comprising a housing, propulsion and injection setup, as well as fencing the area of air cushion with bow and aft movable elements, with side lower balloons and medium-sized skeg, partitioning the area of the airbag on the left and right separate chambers, the discharge setting is complete with a steering device for regulating the injection of air into the said chamber. In addition, such a vessel steering device can be made with controllable dampers placed on the discharge installation. Along with this, such a vessel appropriate injection plant with controllable flaps to position in the bow of the hull ahead of the center of mass of the vessel.
However, along with the advantage of the known air-cushion vessel consists in increasing the safety of operation of the hovercraft by providing it with sufficient controllability, known on the ship �air cushion has restrictions on its use. Indeed, the motion of such a vessel over water or flat, firm surface, such as ice, retains all its advantages: speed, maneuverability, amphibiotic. However, the use of such a vessel in a swampy area with exposed water from the high hills, in areas with thickets of bushes or over hummocky ice and snow cohesive sediments, and sand and dirt hills is almost impossible.
The objective of the proposed technical solution is the extension of functional capabilities of the known air-cushion vessel.
The problem is solved due to the fact that the air cushion vehicle comprising a body, propulsion and injection setup, as well as fencing the area of air cushion with bow and aft movable elements, with side lower balloons and medium-sized skeg, partitioning the area of the airbag on the left and right separate chambers, the discharge setting is complete with a steering device for regulating the discharge of air in said chamber, unlike the prototype , side lower balloons and the average skeg is made of two buildings each, in each cavity between two buildings installed retractable rotary propulsion.
A diagram of the hovercraft is represented by drawings (Fig.1-4).
Fig.1 - CX�mA hovercrafts, side view;
Fig.2 is a view along arrow A in Fig.1;
Fig.3 is a view along arrow B in Fig.1;
Fig.4 - section b-b In Fig.1.
Hovercraft includes a housing 1, and propulsion 2 and discharge 3 settings (Fig.1).
As in the prototype , to the body 1 attached 4 nasal and aft movable elements 5 guardrail, as well as his two side of the hull 6 and the average skeg 7, partitioning the area of the airbag on the left and right separate chambers 8 (Fig.2-3).
Injection setup 3 is made with a steering device for regulating the injection of air into these chambers 8. The steering device is provided with controllable valves 9, placed inside the discharge fitting 3 (Fig.4).
3 with the flaps 9 may be located in the bow of a vessel ahead of its center of mass (C.m.).
Operation of the hovercraft is as follows.
In the Parking lot this vessel rests on the lower balloons 6 and the skeg 7. For the translational motion of the vessel into action by the installation 2 and 3. When the discharge fitting 3 within the volume bounded by the moving elements 4 and 5, side lower balloons 6 and the supporting surface of the screen, an excessive static pressure of the airbag, and the ship hovers over the supporting surface. Propulsion 2 leads the ship into forward motion� by creating traction.
Control of a hovercraft is carried out by means of a steering device that allows to adjust the injection of air into the chamber airbag in such a way that left turn decreases the injection in the left chamber 8, and when turning to the right decreases the injection right in the camera 8. Such management leads to nakineiu ship with touch support surface side skeg 6. The drag force acting on the skeg 6 that is in contact with the supporting surface, creates a moment, turns the ship about a vertical axis. The lateral force caused by the drift angle and the inclination angle of the inner Board when turning, allows you to control the ship's course. Simultaneously with the decrease in circulating the air in chamber 8 located on the side of turn, increases air injection into the opposite chamber 8. This achieves an increased roll angle and increases the magnitude of the lateral stress from the difference in ination in both the chamber 8 acting on the ship when managing them.
In the operation of the steering gear regulation of circulating the air in chamber 8 is effected by the deflection of the flaps 9 of the steering gear, blocking the flow of air into the chamber 8 on one side to increase the flow of air into the chamber 8 of the other side. As a result of rotation of sweat�ka air supplied to the region of the air cushions, dampers, and are part of the internal surfaces of the unit 3 is implemented by a lateral control force. Injection setup 3 are placed in the nasal tip, and the point of application of this force is ahead of the center of mass of the vessel that provides the creation of a corresponding unfolding of the moment.
When controlling a hovercraft the complex of these forces and moments due to the work of the steering gear of the vessel, ensures the effectiveness and safety of maneuvering in the mode of movement of the hovercraft.
Inhibition of such a vessel is carried out by increasing the resistance force of the vessel, acting on the lower balloons 6 and 7, when reducing the supply of air in both chambers 8 and reverse traction drive units 2.
Unlike the prototype , side lower balloons 6 and the average skeg 7 is made of two housings 10 and 11 each in each cavity 12 formed by the housings 10 and 11 is equipped with a retractable rotary propulsion 13.
Inside the rotor is air or foam that provides a partial or even complete (depending on design) buoyancy, impassable boggy places.
The proposed hovercraft, equipped with a rotary engine, will be able to move in deep snow and on ice, and Bo�autistim ground. Such vehicle can be used for delivery of goods and people to remote areas off-road, and as a carrier platform for working equipment, for example ladiesnew installation.
The invention can be used to build a hovercraft, designed for movement on water surface water area, and also has amphibious qualities and is able to move on snow, ice and dirt surfaces.
Sources of information
1. Sat. Shipbuilding abroad. No. 3 (135), Leningrad, Sudostroenie, 1978, p. 12, Fig.7.
2. Patent RU №2154586 C1, 20.08.2000.
3. Patent US No. 3106260 And, 08.10.1963.
4. Patent RU №2302354 C1, 10.07.2007.
5. Patent RU №2097231 C1, 27.11.1997.
Air cushion vehicle comprising a body, propulsion and injection setup, as well as fencing the area of air cushion with bow and aft movable elements, with side lower balloons and medium-sized skeg, partitioning the area of the airbag on the left and right separate chambers, the discharge setting is complete with a steering device for regulating the injection of air into the said chamber, characterized in that the side and lower balloons average skeg is made of two buildings each, in each cavity between two buildings installed retractable rotary propulsion.
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
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.
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.
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
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.
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
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.
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.
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
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
SUBSTANCE: vehicle propulsor contains carrying frame resting by its mangles on elongated toroid-shaped capsula made of flexible material and having internal longitudinal twisted in helical fashion branch in the channel of which endless drive chain branch is located throughout the length of which bodies of rotation are installed with possibility of turning. The toroid-shaped capsula is filled with resilient cylindrical insert with central hole along axis having diameter exceeding diameter of twisted in helical fashion branch of capsula. All the surface of the insert is covered with antifriction grease. The insert itself is made two-layered of elastically squeezable outer layer and rigid tubular inner layer which forms internal non-deforming central opening of insert.
EFFECT: higher reliability of propulsor in operation.
SUBSTANCE: vehicle comprises hull with two rows of working wells, propulsor, deckhouse and steering complex. Hollow conical screw jacket is arranged around the periphery of the body to spin there about and around its axis It is composed by curvilinear strips of various order and degree of curvature. Centres of curvature are located inside or outside jacket cross-section to make along its periphery the multistart screw surface with screw lines and helical grooves. These are inclined relative to rotational axis inside said hollow conical screw jacket. Strips feature different width increasing over jacket length from inlet to outlet. Said strips are coiled in vertical plane in lengthwise direction and flexed in screw lines across mandrel composed by paraboloid of revolution. Said jacket has outer laps as screw blades over the entire length of screw jacket.
EFFECT: enhanced operating performances.
SUBSTANCE: proposed propulsor comprises set of blades and wheel chassis. The latter comprises three pneumatic-tire wheels, one central wheel and two side wheels. Side wheels are fitted on walking beam extensions fitted on central wheel axle with parallel axes of revolution. The latter are located in common horizontal plane and additionally articulated at two wheel rim points by common axles that make with axles of side wheels and central wheel the four-link antiparallelograms supporting the blades on common axles of said three wheels.
EFFECT: simplified design of propulsor driven by shaped cam.
SUBSTANCE: invention relates to an increase of the amphibian dihedral stability. An amphibian comprises a polyhedral wing and fuselage. Proposed system comprises a buoyancy system and a wing tip system. The said buoyancy system is shifted in the lateral direction from the fuselage and comprises a hydrodynamic stage. The wing tip system is connected with every tip of the polyhedral wing of the amphibian. Every wing tip comprises an anhedral wing tip with a positive angle of attack and a hydrodynamic surface of gliding.
EFFECT: lower drag in water and air operations.
20 cl, 7 dwg
SUBSTANCE: amphibious vehicle wheel comprises bladed propulsors fitted on its hub. At least two blades of wheel assembly are composed of hollow conical scrolls of plastically pliable material, cone vertices being located in mirror axis of the scroll inlet bells. Peripheral part of said scrolls makes a segmented circle with the groove reinforced with the cord to extend through scroll cone vertices for strap spring to be laid therein with preinterference to connect said segments.
EFFECT: perfected design of bladed propulsors.
SUBSTANCE: wheeled propulsor for amphibian includes rotor with blades and casing with inlet and outlet holes. The rotor is made inside driving wheel which is attached to amphibia body using suspension. Wheel spokes executing the role (function) of rotor blades are made as propeller blades. The casing is installed and fixed on wheel suspension in position where its outlet hole made in size approximately equal to wheel rim diameter is brought into proximity with wheel rim with minimum allowable clearance, and guiding channel of outlet hole is turned towards aft, wake direction of amphibia.
EFFECT: simplification of design and higher operational durability of wheeled amphibia.
SUBSTANCE: proposed propulsor consists of watertight hollow cylindrical pulleys to carry flexible belt consisting of rectangular-section chamber. Crosswise stiffness members are fitted into said chamber to divide it into bulks communicated via holes made in stiffness members. Belt outer side comprises vanes turning through preset acute angle.
EFFECT: better flotation.
SUBSTANCE: invention relates to surface transport facilities. Motion and reverse braking of wavelet are driven by system composed of two interacting bodies, that is, wavelet with the set of primary elements of pulse transformers and secondary elements of pulse transformers. Every of the latter in primary element can reciprocate along its primary element in one side and in reverse direction at reverse speed. The latter is lower than its working speed that creates the difference between working and reverse pulses of secondary element. Set of pulse transformers consists of primary and secondary elements built around free-piston ICE. Every primary element is composed of cylinder with exhaust and vent openings at its centre. Starting openings are arranged at cylinder edges, heads and atomizer with holes are secured to cylinder edges. Every secondary element in pulse transformer unit is a free piston.
EFFECT: creation of pulse transformer unit.
7 cl, 4 dwg
SUBSTANCE: invention relates to cross-country vehicles equipped with auger wheel propulsors to be used at the lack of roads. Proposed auger mobile comprises body with crew cabin and reclining area at its front for cosmonauts and power plant arranged at rear extending through auger mobile running gear transmission composed of two augers with helical tapes coiled in opposite directions. Rotary shaft is fitted at auger mobile front and rear parts, perpendicular to its lengthwise axis and parallel with horizon. U-like plate is fitted on the shaft and consists of two props and round crossbar connecting said propos to make the journals on every outer side of U-like frame. Ridged plates are welded between said props to round crossbar. Said shaft is driven by chain gear from reversing reduction gear mounted at auger mobile body.
EFFECT: better propulsive performances.
4 cl, 14 dwg
SUBSTANCE: proposed vehicle comprises watertight body, ICE, hydraulic system, rotary screw propulsors with screws driven by hydraulic motor via final drive. Said rotary screw propulsors are fitted on beams with output shafts secured at their ends by flanges with studs. Beams mid parts are connected by vertical axle arranged thereat, bearings and nut with watertight body. Beams are provided with vertical pins with roller arranged at equal distance from beam vertical axis, rollers being fitted in curve groove at watertight body. Ends of adjacent beam vertical pins are interconnected in pairs by two-way hydraulic cylinders. Driver cabin and compartment are arranged in one space and shaped to hemisphere and equipped with extra drive seat with remote control board, steering wheel engaged with metering pump connected in hydraulic circuit of two-way cylinders.
EFFECT: better propulsive performances, higher reliability.
10 cl, 7 dwg
FIELD: transport engineering; amphibian vehicles.
SUBSTANCE: proposed vehicle has trimaran water displacement body, wheeled propulsive device and water propulsor. Two pressure chambers with fans are installed in bow of body. Surface of body bottom part is provided with bend having two slot-like holes connected with pressure chambers to let out air jets created by fans and forming air cushion in under-bottom space. Wheeled propulsive device is of rolling type and it has individual drive from geared motors. Wheels of propulsive device are made in form of cylindrical housing with flanges on outer surfaces of which round-shape cross slots are milled in number corresponding to number of support and rest flexible members of rim secured by pins in holes of flanges for turning through angle of roll out to form, together with wheel rim and inner engagement of support-and-drive device of vehicle, mechanism with three degrees of freedom implementing rolling system with negative friction providing translational movement of vehicle owing to upward-forward (backward-up-ward) displacement of center of masses. Support-and-drive device can be furnished with covers interconnected by studs. End of upper stud can be made in form of cylinder fitted into extensible grip installed in upper part of vehicle body on its side to change mode of operation of wheel. Water propulsor can be made in form of paddle wheels installed on vertical posts for vertical displacement and containing cylindrical housing fitted in bearings on axle and paddles of rectangular shape or paddles with bevels to build additional traction force and increase efficiency when moving in water or negotiating bogged terrains.
EFFECT: improved operating characteristics of amphibian vehicle.
3 cl, 6 dwg