Air cushion catamaran

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

 

The invention relates to shipbuilding, in particular to the construction of transport, sports and other boats of the catamaran type.

Famous catamaran, made in the form of two parallel hulls joined at the top by a deck with superstructure and propulsion complex, containing mounted below the waterline propulsion. As the last applied twin-rotor supercharger Diesel engine, which is perpendicular to the opposite walls of the housings and attached to him /patent RF №2351500, M. CL B63B 1/10, 2009/.

Famous catamaran has good speed, but low maneuverability over obstacles support surface because of the location of the propeller below the waterline.

Another analogue of the claimed invention is a vehicle air cushion with a keel in the middle of the bottom containing the air handling unit supplying compressed air from one side to the chamber to create an air cushion and on the other hand in the air ducts to create thrust. The outlet openings of the air channels placed in the rear of the hull vehicles /USSR patent No. 499790, M. CL B60V 1/18, 1976/.

The disadvantage of the device in this patent is that with effective use of the air flow ventilation system to create thrust W�ucitelka part of the cost of energy accounts for the creation of the airbag, which has a negative impact on the performance characteristics of the vessel.

The closest analogue of the proposed technical solution to the technical essence and the achieved result is a catamaran air cushion containing two parallel buildings with elements of their connection, the ventilation unit to the actuator and the inlet ducts from the installation. Catamaran capable of carrying a big load and lots of people to reach speeds of up to 110 km/h. The base of each hull of the catamaran has a cavity into which air is blown, creating a lifting force and speed /U.S. patent No. 6948439, M. CL B63B 1/38, n. CL. 114/67A, 2005/.

The airflow generated by the ventilation unit, is mixed with air airbag, which prevents the use of airflow to create thrust and limits the speed capability of the catamaran.

The problem to be solved by the claimed invention is to increase the speed capabilities of a catamaran.

Another technical result, which can ensure the proposed technical solution in comparison with the closest analogue, is to reduce energy costs on the mode of movement of the vessel over the water.

The task is achieved by the fact that the known device comprises two pas�allelic corps with elements of their connection, the ventilation unit to the actuator and the inlet ducts from the installation, and according to the invention both enclosures are made flat-bottomed, and the output ends of the channels facing towards the bottom of the housing at an acute angle, the outlet channels are made in the bottom in the form of evenly spaced over the length of the bottom transverse slits or rows of holes.

The invention is illustrated by drawings, where Fig.1 schematically shows a view of a catamaran on the side with the broken-out section on a diametrical plane and dug in one of the buildings of the vessel; Fig.2 - bottom view Fig.1 with a transverse slit in the bottom of the housings; Fig.3 is bottom view of Fig.1 with transverse rows of holes in the bottom of the housings; Fig.4 is a view along arrow A in Fig.1.

The proposed catamaran air cushion contains a parallel flat-bottomed hulls 1 and 2 are interconnected at the front and at the top - deck with 3 add-4. In the front mounted air handling unit 5 wheel /Fig. not shown/ and 6 channels air from the installation of 5 in both buildings 1 and 2. Outlet channel 6 is formed in the bottom in the form of the underside of the transverse slits 7 or the underside of the transverse rows of holes that are evenly spaced along the length of the housings 1 and 2. The weekend ends 9 channel 6 is directed to the bottom at an acute angle α toward the aft of the hulls 1 and 2. �to assure manageability of the catamaran while driving in the channels 6 are mounted the butterfly valve and control system /Fig. not shown/. With their help regulated speed, roll and pitch of the ship in hover mode and movement over the water.

When the drive air from the ventilation unit 5 is fed through the channels 6 and the ends 9 under excess pressure through the slit 7 or hole 8 is ejected into the bottom at an acute angle thereto and across the width of the slits in the direction of the stern of both hulls 1 and 2. A jet of air is pressurized under the bottoms, raising the catamaran above the base surface. The air flow is generated reactive pillow, allowing the forced modes for thrust to obtain the lifting and traction, providing the height of the flight and maneuver of the catamaran.

The prototype sports catamaran with transverse rows of holes in the bottom of the hulls, which are successfully tested.

Thus, in the proposed technical solution effectively uses the airflow from the ventilation unit to create thrust and increase the speed of the catamaran.

Catamaran air cushion containing two parallel buildings with elements of their connection, the ventilation unit with the drive mounted in the bow of the catamaran, and channels air from the installation, characterized in that both enclosures are made flat-bottomed, and the output�s the ends of the channels facing towards the bottom of the housing at an acute angle, in this case the outlet openings of the channels are made in the bottom in the form of evenly spaced over the length of the bottom transverse slits or rows of holes.



 

Same patents:

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FIELD: transport.

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FIELD: transport.

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FIELD: transport.

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8 dwg

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FIELD: transport.

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6 cl, 4 dwg

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Hovercraft // 2545566

FIELD: transport.

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EFFECT: higher speed and mobility.

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FIELD: transport.

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2 dwg

FIELD: transport.

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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.

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3 dwg

FIELD: transport.

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EFFECT: higher strength and reliability of joint.

2 cl, 2 dwg

Streamlined ship // 2470808

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.

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25 dwg

FIELD: transport.

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5 dwg

FIELD: transport.

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EFFECT: higher reliability and efficiency.

4 cl, 10 dwg

FIELD: ice breaking technique; breaking ice cover by resonance method with the aid of hovercraft.

SUBSTANCE: proposed method includes excitation of resonance flexural gravitational waves in ice and creation and change of aerodynamic lift force at frequency of resonance flexural gravitational waves. In the course of motion of ship, alternating aerodynamic lift force is created at frequency of resonance flexural gravitational waves by turning the horizontal plates to positive and negative angles of attack towards incoming flow of air. Plates are mounted on upper deck. Angles of attack are periodically changed at frequency of said waves.

EFFECT: increased thickness of ice broken by this method.

1 dwg

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