Marine hydrofoil

FIELD: shipbuilding; manufacture of ship stabilization systems equipment with deeply-submerged hydrofoils.

SUBSTANCE: proposed marine hydrofoil is provided with units for determination of its speed and depth of submergence mounted on it and connected to shipboard computer. Mounted additionally on hydrofoil are units for determination of side slip and angle of attack which are also connected to shipboard computer.

EFFECT: enhanced efficiency.

1 dwg

The present invention relates to control systems ships with underwater wings, in particular to systems stabilize the movement of vessels equipped with deep wings.

There are two types of underwater wings: emergent and deep (paleogreens).

The first ones are mainly V-shaped, and the stabilization of the motion of the ship with such wings to a certain extent automatically, since the wing, working simultaneously in two media (water and air), which differ in density by several orders of magnitude, automatically parries arising from the movement of both the roll and pitch of the vessel (as immersion in water in the air wing to increase its lifting force). However, in the excitement of such vessels tend to yaw and sway.

Unlike the first deep wing in any form is constantly working under the surface of the water, i.e. in a homogeneous environment. Because of this vessel in deep wings has enhanced comfort, and because the movement of the hull is elevated above the surface of water at a sufficient height, the comfort of many such vessels is maintained at a wave height up to 3 meters.

However paleogreens the wings themselves are not fundamentally can troubleshoot on the fly neither roll nor pitch is Edna, therefore, they are supplied steering surfaces (similar to the aerodynamic rudders height of the aircraft). Because the speed of the vessel is large (up to 60 knots), the slew rate and roll, and pitch exceeds the speed of reaction of the captain (steering), so the court on deep wings are equipped with onboard computers (PC), processing signals from sensors that characterize the situation (heading, roll, pitch) and the state (motion-rest) of the vessel and outputs the processed signals as control signals to the actuators of the tail surfaces underwater wings, thereby fending external disturbance on the vessel (see, for example, ABT. St. No. 713314, 1461231, IPC G 05 D 1/00 and others).

A common disadvantage of all known systems of stabilizing the movement of vessels on paleogreens wings is the fact that the perturbation effect on the wings, running in one environment and separated from the perturbed surface (water)and the characteristics of disturbing influences are removed from the hull, in another environment (the air), not comparable in density with the first, which in some cases leads to a mismatch between the desired and actual signals supplied to the control surfaces of the wings. For example, from known sensors that determine the state and condition of the hull on the water, the most widely gyroscopic sensors, compared to the other sensors (inertial, gravitational, and others) have the highest sensitivity and accuracy. However, gyroscopic sensors have a fundamental shortcoming, the essence of which is that they only register the change in the angle of inclination of their axes, but does not reflect neither longitudinal nor plane-parallel movement of the gyro axis. With respect to the hydrofoil means that the gyroscopic sensors mounted on the hull for three-axis system of rectangular coordinates, will only track the change of heading, pitch and roll of the vessel, but does not record its sideslip due to lateral sliding of the wing (for example, on the wave), although in this case the wing will be exposed to disturbing influences, and the mode of its movement in the aquatic environment will clearly change. In other words, to improve the quality of stabilizing the movement of the hydrofoils should not indirect and direct measurements, i.e. to register the position and status are not the hull, and bearing his underwater wings relative to the flow of water. The feasibility of such registration is especially visible on the example of a vessel, equipped with separate wings along with wings, ustanovlenytakie corps throughout its width (as is typical for large ships). The side wings when turning (circulation) of the vessel have different speed, because one and the same time are different path: one external, the other internal circle circulation. Obviously, at different speeds of the outer and inner wings (or outer and inner extremity of the single wing) position and the hull will inevitably change (in presence of some of the modes occurs slipping of the vessel to the center or from the center of circulation).

To eliminate this problem, directed the device according to patent No. 30201 a useful model System to stabilize movement of the hydrofoils", IPC G 05 D 1/00, priority 17.12.02.

The known device comprises a set directly on the underwater wing sensors speed and depth that is connected to the vehicle (ship) computer issuing the processed sensor signals to the actuators of underwater wings in the form of control signals.

Since the two sensor designed to be placed in sensors static and dynamic pressure, whose functions overlap, none of them can be uniquely assigned to the meter of a particular size, it's technically more correct will be the functional definition of these sensors as means to determine the speed and the depth of podvod the wing".

A disadvantage of the known device is limited in its capabilities, as it also impacts on the wing related to his speed and depth, the wing experiences a number of other disturbing influences.

Before the claimed invention was tasked to act on the steering surface of the wing, on the basis of disturbing environmental influences directly on the wing itself, i.e. to measure the cause (the deviation of the wing), and not the result (the deviation of the ship's hull).

The problem is solved in that the proposed marine underwater wing, at least one steering surface, on which are mounted means for determining the speed and depth of the dive. The signals of these funds processed on-Board computer, are transmitted as control signals to the actuators of the steering surface.

New in the proposed wing is that it is additionally mounted means for determining the values of sideslip and angle of attack.

The technical result of the claimed device is to improve the quality of stabilizing the movement of the hydrofoils.

The drawing shows a diagram of the claimed device.

In the inventive device on the ship underwater wing 1 is equipped with at least one steering surface 2 with IP is Amiternum mechanism 3 of her drive, mounted sensor 4 speed movement of the wing relative to the water environment, the sensor 5 lateral sliding of the wing relative to the water environment, the sensor 6, the depth of the wing relative to the water surface and the angle sensor 7 α attack of the wing to the oncoming flow of water. All sensors are connected to electrical channels with inputs on-Board computer 8 (BAVM) on the hull. The actuator 3 each steering the surface 2 is connected with the corresponding output BAUM 8. Since the ship is equipped with several underwater wings (in the simplest case two, bow and stern), these sensors are mounted on each of the wings, and if necessary, duplicated on one wing in accordance with the number of tail surfaces on it. The presence of sensors 4-7 on the wings does not exclude other sensors for determining the position and condition of hull, mounted on Board and also connected to BAUM.

The device operates as follows.

With the beginning of the rolling motion of the ship on the wing 1, the flow of water affects the sensors 4-7 registering the signals from which are fed to BAUM 8, processed in the form of command signals, serves on the Executive steering mechanisms surfaces 2, which will counter disturbance on the wings.

It is obvious that the control surfaces of a single wing can't bet the SQL variety of disturbing influences and to stabilize its movement. Stabilization of each wing is only possible because the command signal to each of the steering surface is produced computer with regard to recording signals of all other sensors, installed on other wings of the ship.

Because between all sensors of the wings (as between the sensors wings and sensors on the hull) there are cross-links, in some cases it is impossible to describe which of the sensors has any specific function (like your prototype set of hydrostatic and hydrodynamic sensors in one case is used to determine the depth, and the other the speed of the wing). So formally correct definition installed on the wings of the sensors as a means for determining the values of certain indicators of the position and condition of the wing.

Constructive progress in the claimed invention the sensors are insignificant because the prior art there are many popular devices, capable of performing the functions used in the claimed invention tools.

Marine underwater wing, containing mounted thereon means for determining the speed and the depth that is connected to the onboard electronic computing machine, characterized in that the wing is also SMON iravani also connected to the electronic computing machine means for determining the values of sideslip and angle of attack.