RU2658198C1 - Method of reducing the thermal visibility of the combat vehicle when crossing the water obstacle - Google Patents

Abstract

FIELD: military equipment.

SUBSTANCE: invention relates to the field of military equipment, in particular to the methods for reducing the thermal visibility of the combat vehicles at the running engine while crossing water obstacles. Exhaust engine gases are used in order to reduce thermal visibility, these gases are redirected by means of a bypass valve. In front of the vehicle floating on the water a gas-air layer is created, the temperature of which is reduced by water.

EFFECT: reduced thermal visibility of the vehicle at the running engine.

1 cl, 1 dwg

Description

The invention relates to the field of military equipment, in particular to methods for reducing the thermal visibility of military vehicles (hereinafter - BM) with the engine running while overcoming water barriers.

A known method of reducing the thermal visibility of military vehicles, in which the thermal reduction of a military vehicle is carried out by means of a nozzle inclined to the flange for exhausting the engine’s exhaust gases of the vehicle, on which the lower, middle and upper, with a curved guide element, heat shields are fixed, each heat shield is inclined towards the cut of the outlet section of the pipe to ensure the formation of an ejection flow of atmospheric air, and the angle of inclination it of each subsequent heat shield is 1-5 ° greater than the previous one, each step rack is made in the form of separate steps offset from each other by a certain distance in the plane of the corresponding heat shield to reduce the heat transfer of exhaust gases from the pipe to the upper heat shield, while the element of the upper heat shield is bent so that one part of it is inclined at an angle of 25-30 ° to the cut of the outlet section of the pipe to ensure the capture of the atmosphere Fernie air kinetic energy of the exhaust gas stream, and another portion smoothly rotated away from the nozzle slice outlet section to minimize the potential for turbulence zone in the ejection of air flow and tangent to the plane, which is a continuation of the upper outer tube surface (see. Patent for invention No. 2485431. Patent holder Open Joint-Stock Company “Ural Design Bureau of Transport Engineering”, authors: Makeev AG, Cherepanova OV Open edition. Prototype).

The known method allows the machine to reduce the likelihood of a turbulence zone in the ejection flow of atmospheric air, to exclude the possibility of direct heat transfer through the racks to the upper heat shield, thereby reducing the thermal visibility of the machine with the engine running and the likelihood of thermal imaging detection of enemy targets. However, this method does not allow:

- completely eliminate thermal radiation from the engine of the machine;

- to shift the energy center for aiming self-aiming warheads (hereinafter - submunitions) operating in the infrared wavelength range to the optimal distance from the machine body, while not simulating individual false thermal targets, which can most likely be determined by the submunition guidance system when scanning the terrain During the flight;

- reduce the temperature contrast of the center of radiation of a floating machine, that is, its thermal signature on the water;

- reduce the likelihood of a machine being struck by submunitions affecting its most vulnerable places - the upper projection of the armor, where relatively thin armor is used during the combat vehicle overcoming water obstacles.

The objective of the present invention is to ensure the displacement of the energy center aiming submunitions at an optimal distance from the machine body and lowering the temperature of this center of radiation, reducing the thermal visibility of the floating machine as a whole and, as a result, increasing its protection against submunitions.

The technical result of the proposed invention is to reduce the thermal visibility of a machine with a working engine when overcoming a water barrier, reducing the likelihood of its destruction by high-precision weapons.

The technical solution of the proposed invention is the use of an additional exhaust pipe for the engine exhaust of the machine with a bypass valve located therein, controlled by an actuating element and a non-return valve, protected by a protective armored hood.

At the same time, the way to reduce the thermal visibility of BM when overcoming a water barrier is based on the fact that before a machine overcomes a water barrier, the driver, acting on the control, transmits a signal via electrical wires to the mechanism for raising the water-reflecting shield. At the same time, the signal enters the actuator acting on the bypass valve and the exhaust gases of the engine that exited through the main pipeline, begin to exit through the secondary pipeline through the non-return valve, creating an air gap in front of the machine floating on the water, thus significantly reducing the temperature of the exhaust gases, shifting energy center for aiming submunitions and, as a result, reducing the thermal visibility of a floating machine, providing an increase in its protection.

A way to reduce the thermal visibility of BM when overcoming a water barrier, which consists in using engine exhaust gases that are redirected by a bypass valve, which controls the actuator by a signal transmitted by electrical wires from the control element through an additional pipeline and a non-return valve located in it parts of the floating machine, ensure the creation of a gas-air layer in front of the floating machine, the temperature of which is reduced by water, and, as a result vie, thermal contrast of the machine on the water, increase its protection.

The invention is illustrated in FIG. 1, which shows a method of reducing the thermal visibility of a combat vehicle while overcoming a water barrier, where 1 is a vehicle; 2 - water; 3 - water-reflecting shield; 4 - a mechanism for raising a water-reflecting shield; 5 - a protective armored cap; 6 - check valve; 7 - bypass valve; 8 - the main pipeline; 9 - an executive element; 10 - electric wires; 11 - governing body; 12 - engine; 13 - gas-air layer; 14 - an additional pipeline.

) показано направление выхода отработавших газов двигателя через дополнительный трубопровод 14, пунктирными стрелками (

) - через основной трубопровод.Straight arrows (

) shows the direction of the exhaust gases of the engine through an additional pipe 14, dotted arrows (

) - through the main pipeline.

To reduce the thermal visibility of machine 1 when it moves through water 2 when overcoming water obstacles, the driver uses the control 11, acting on which, raises the water deflector 3 by transmitting a signal via electric wires 10 to the mechanism for raising the water-reflecting flap 4. At the same time, the signal enters through the electric wires 10 to the actuator 9 (made, for example, in the form of an electromagnet with a rod), which controls the operation of the bypass valve 7, changing its position. The exhaust gases of the engine 12, moving along the main pipe 8 of the exhaust system of the machine 1, change their direction of movement and begin to exit through the additional pipe 14. The additional pipe 14 is equipped with a check valve 6, designed to prevent penetration of the additional pipe 14 of water 2, and is protected by a protective armored hood 5 in order to prevent its mechanical (combat) damage. When the exhaust gas of the engine 12 of the machine 1 into the water 2, an air-gas layer 13 is formed, while the water 2 reduces the temperature of the exhaust gases leaving the geometric circuit of the machine 1. Thus, the thermal contrast of the machine 1 decreases when it moves on the water 2, and the thermal visibility is also reduced.

An example of the method. When the machine 1 moves through water 2, the driver, acting on the control 11, raises the water deflector 3 by transmitting a signal via electric wires 10 to the mechanism for raising the water deflector 4. At the same time, the signal is sent via electric wires 10 to the actuator 9, which acts on the bypass valve 7 changing his position.

The exhaust gases of the engine 12, moving along the main pipe 8, begin to exit through the additional pipe 14, through the check valve 6, protected by a protective armored hood 5. When the exhaust gases of the engine 12 of the machine 1 enter the water 2, an air-gas layer 13 is formed, cooled by water 2, reducing the thermal the visibility of machine 1 and, as a result, increasing its protection against submunitions.

The proposed method allows to significantly reduce thermal radiation from the engine of the machine, its thermal signature when moving on water, to shift the energy center for aiming self-aiming combat elements (high-precision submunitions) away from the machine at the optimal distance from its body, thus, in general, increase protection from precision weapons.

Literature

1. Patent for the invention No. 2485431. Patent holder Open Joint-Stock Company “Ural Design Bureau of Transport Engineering”, authors: Makeev AG, Cherepanova OV Open edition.

Claims (1)

A method of reducing the thermal visibility of a combat vehicle when overcoming a water barrier, which consists in using engine exhaust gases that are redirected by a bypass valve, which controls the actuator by a signal transmitted by electrical wires from the control element through an additional pipeline and a non-return valve located in it the bow of the floating machine, provide the front of the floating on the water machine gas-air layer, the temperature of which is reduced by water, and as a result, reducing the thermal contrast of the machine on the water, increase its protection.

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