RU209324U1 - UNDERWATER PROPELLER PROPELLER - Google Patents

Abstract

The utility model relates to propeller propulsion of underwater objects, in particular, to non-rotating propulsors, which, creating a stop due to the resistance force of the plates - blades, reciprocating in the direction of movement of the object, are located on the side, that is, on both sides of the body of the underwater object, and are set in motion by electric drives operating independently of each other, ensuring their movement at different speeds, thereby creating a moment that turns the underwater object in a horizontal plane, that is, it retains maneuverability even at a stroke speed close to zero, the regulation of the rotation of the blade makes it possible to reduce it idling and an increase in the speed of the apparatus, and changing the phase of the electric motors to the opposite leads to a change in the direction of the propulsion thrust, which creates a reverse mode. idling blades and expanding the operational characteristics of the propulsion unit by providing a reverse mode.

Description

The utility model relates to propeller propulsion of underwater objects, in particular, to non-rotating propulsors.

Propellers of this type work by creating a stop due to the resistance force of the plate - the blade, which makes reciprocating movements in the direction of movement of the object.

The propeller is a system of longitudinally movable blades that cyclically perform the stroke, return stroke and turn of the blade. When performing a stroke, the blade moves in the direction opposite to the direction of thrust and is oriented across the flow of the aquatic environment. On the return stroke, the blade is oriented downstream to create minimal drag.

A device for moving in water is known, containing a pedal, blades pivotally mounted on it and a means of communication between them according to copyright certificate No. 506423, IPC A63B 31/10, publ. 03/15/76. The disadvantage of the device is the complexity of the design, and the inability to create a reverse.

The closest analogue is a propeller according to the patent RU No. 85145, IPC V63N 1/32, publ. 27.07.2009, containing two pairs of plates, each of which is hinged on the axis of the rod along the leading edge, reciprocating in the direction of movement of the object in antiphase. The disadvantage of this design is low maneuverability and lack of reverse.

The technical result of the proposed propeller blade propulsion is to increase the speed of the underwater object by reducing the resistance when the blade is idling, increasing the maneuverability of the object at low speeds and expanding the operational characteristics of the propulsion unit due to the reverse mode.

The specified technical result is achieved by the fact that, unlike the known technical solution, the elements of the plate-blade propulsor that create the stop are located not behind the stern of the underwater object, but on the side, that is, on both sides of the hull, and are driven by electric drives of electric motors operating independently of each other. from friend. This arrangement of the propeller blades predetermines the possibility of their movement at different speeds, thereby creating a moment that turns the underwater vehicle in a horizontal plane. As a result, the device retains maneuverability even at a travel speed close to zero. The rotation of the blade is carried out according to a predetermined law, which leads to an earlier rotation of the blade, and therefore to a decrease in resistance when it is idling and an increase in the speed of the device. Changing the phase of the electric motors to the opposite, provides a change in the direction of the propulsion thrust, creating a reverse.

The utility model is explained with the help of drawings:

fig. 1 - shows the layout of the mover;

fig. 2 - a diagram of the movement of the propeller blades in a straight line:

a) from bow to stern;

b) from stern to bow.

fig. 3 - diagram of the movement of the propeller blades on the reverse:

a) from bow to stern;

b) from stern to bow.

Rowing plates, which are profiled blades 1, are located on the right and left sides of the underwater vehicle 5, and operate independently of each other (Fig. 1). To reduce the resistance of the apparatus when moving in a liquid, the propulsion mechanisms are closed by a fairing, consisting of a bow 2 and aft part 3, as well as a cylindrical insert 4 with a groove for the shaft of the plate-blade 1. (In figures 2 and 3, the bow of the underwater vehicle is located on the left, and the stern is on the right)

Each plate-blade performs periodic longitudinal translational oscillations in the direction of movement of the apparatus (Fig. 2). The law of longitudinal translational oscillations of the blade is chosen in such a way as to ensure maximum efficiency of the propeller. In the region of the fore 2 and stern 3 ends, the blade makes a turn of 90 degrees. The angle of rotation of the blade is described by a periodic law chosen so that the profile is oriented across the flow when moving from bow to stern (Fig. 2a), and along the flow when moving from stern to bow (Fig. 2b).

The drag area of the blade, and, accordingly, the magnitude of the force acting on it from the side of the liquid when moving towards the stern, thus, turns out to be much larger than when the plate moves towards the bow. As a result, the time-averaged force will be directed towards the movement of the device, that is, a stop will be created. The profiling of the plate in the form of a blade makes it possible to further reduce its resistance due to the non-separated flow around it when moving from the stern to the bow, and, consequently, to increase the stop.

The location of the propeller blades on both sides allows the device to make a turn in the horizontal plane by setting different pitching speeds for the right and left blades. Such turns can also be made at low speeds, which reduces the need for a thruster.

In the case of a change in the phase of rotational oscillations of the blade to the opposite, as well as a change in the direction of rotation (Fig. 3), the plate-blade moves along the flow from the bow of the apparatus to the stern (Fig. 3a), and across the flow from stern to the bow (Fig. 3b). ), as a result of which the underwater vehicle reverse mode is created, since the time-averaged longitudinal force (stop) will change its direction to the opposite. The technical support for changing the direction of action of the propeller blade stop force additionally increases the maneuverability of the underwater vehicle.

Claims (1)

Propeller paddle propulsion of an underwater vehicle, characterized by the presence of two profiled plates - blades, placed on the body of the underwater object side by side with the possibility of reciprocating movement in the direction of movement of the object in antiphase by installing each blade on the axis of electric motors operating independently of each other.

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