Air cushion vehicle

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

 

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 [1]). 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 [2], US patent No. 3106260 And, 08.10.1963 [3]), 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 [4], 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 [5]).

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 [5], 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 [5], 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 [5], 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.



 

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