RU2280835C1 - Jamming device - Google Patents

Abstract

FIELD: protection of small-sized civil and military objects against reconnaissance and attacking means of the enemy guided by control systems acting in the optical and radio-frequency bands of electromagnetic radiation.

SUBSTANCE: the device has a metal cylindrical body that accommodates the payload, which is installed in the longitudinal axis of the body, a hollow central duct, burster charge separated from the payload by a piston, upper jettisonable cover, as well as a launching device containing an electric primer, propelling charge and a pyroretarder positioned in the bottom part of the body and pyrotechnically coupled to the burster charge. The body is made of several section rigidly linked by adapters, the payload is positioned in the mentioned sections and made of materials of various kinds acting in the optical and radio-frequency bands of radiation, the section that is nearest to the launching device contains the payload in the form of powdered metal positioned in a toroidal shell of nonmetallic material that is installed on a guide post made ion the form of an axial tube with knives, and the piston is made with a set of partitions - wads.

EFFECT: enhanced efficiency of protection of objects by producing a jamming cloud in the atmosphere in the form of a multilayer aerosol screen effective in a wide spectrum of infra-red and radio-frequency bands with a long (20 to 30 s) time of action.

4 cl, 1 dwg

Description

The present invention is intended to protect small civilian (e.g. car) and military (e.g. boat, tank, etc.) objects from reconnaissance and attacking means of the enemy, induced by control systems operating in the optical and radio wavelength ranges of electromagnetic radiation.

Currently used high-precision weapons (WTO) are an effective means of achieving fire superiority over the enemy in modern military conflicts. To protect against it, various systems for the withdrawal, distraction, masking and destruction of WTO assets have been developed and are operating. The secretive approach in a short period of time of the means of the WTO to the target causes the utmost reduction of the time for their detection and neutralization. Therefore, the technical task is to create in a short period of time on the threatened direction an interference cloud in the form of a multilayer aerosol curtain that is effective in a wide range of infrared and radio wavelengths for a long time.

Armed systems of object protection are effective for a short time in a fairly narrow range of wavelengths of electromagnetic radiation and are therefore ineffective as a means of protection.

Known for the prototype jamming device according to the patent of the Russian Federation No. 2187062 (class 7 F 41 H 9/06, F 42 B 5/15, publication 08/10/2002), which is an aerosol-forming grenade comprising a metal cylindrical housing, is known tablets made of pyrotechnic equipment. A central channel passes through all the tablets, inside of which an ignition-blow charge is installed. In the tail of the housing relative to its inner surface, a bottom with a stop is freely installed. At the bottom there is a propelling charge, an electrocapsule sleeve and a pyro-moderator.

The known device operates as follows.

When the threat detection means is triggered, a signal is sent to the electrocapsule sleeve of the grenade, igniting the propellant charge. Under the influence of the gases formed, the grenade drops the lid, is thrown out of the mortar, and during a certain time flies on the ascending section of the trajectory. At the calculated point, after the ignition-blast charge is triggered under the pressure of the resulting gases, the bottom is removed from the grenade and the ignited pyrotechnic tablets are shot from the body. The tablets disintegrate into burning elements in the form of flat annular segments. The aerosol formation created is a smoke plume extended in the direction of flight of the burning elements.

A disadvantage of the known device is that the aerosol formation created protects the object in a rather narrow range of radiation and for a short time (0.5 ... 2.0 s).

The proposed device for jamming eliminates this drawback by introducing into the device sections with a payload in the form of metal powder, which allows to increase the effective time in the infrared range up to 20 ... 30 s, as well as sections with a payload of materials effective in radio wave range.

The claimed technical solution includes a composite metal cylindrical body in the form of a set of sections rigidly connected by adapters with a payload placed in them from materials operating in the optical and radio wave radiation ranges located along the longitudinal axis of the body, a hollow central channel, pistons with expelling charges, an upper dropable cover as well as a starting device containing an electric igniter, a propelling charge and a pyro-moderator, located in the bottom of the body and pyrotechnically with yazannye is initiated with a charge placed in the oral adapter; moreover, the section closest to the starting device contains a payload in the form of a metal powder, for example, powder, in a toroidal shell of non-metallic material mounted on a guide rack made in the form of an axial tube with knives cutting parts facing the shell with a payload separated from the knockout charge section of the piston with a set of partitions-wad. Pyro-retarders are placed in the section adapters, carrying out the pyrotechnic connection of the knock-out charges of the sections with the initiating charge.

The advantages of the proposed device are:

1) the use of a composite (from a set of sections connected by adapters) hull with the possibility of shooting from the payload sections of various types in opposite directions;

2) placement in the section closest to the starting device, the payload in the form of a metal powder (powder), packed in a non-metallic toroidal shell mounted on an axial guide rack with knives, as well as a piston with a set of partitions-wad (to protect the payload) and adapter with expelling charge and pyro-retarders;

3) the installation in the cavity of the adapters of the initiating charge, connecting the pyrotechnic chains of sections with a pyro-moderator and propelling charge of the starting device.

From comparison with the analogue described above, it follows that the proposed device for jamming due to the use of new significant features in its design, namely: a composite of the sections of the body with the placement of different types of payloads in the sections; adapters with pyro-retarders placed in them, knock-out and initiating charges; payload in the form of a metal powder (for example, powder); sections with materials operating in the radio wave range - which are not used in the analogue, in combination with general ones (metal cylindrical body, starting device, payload sections, propelling charge, pyro-retarders, upper resettable lid) allow solving the task, namely: creating interference in the form of a multilayer aerosol curtain, effective in a wide range of infrared and radio wavelength ranges for a long time (20 ... 30 s). Therefore, the proposed technical solution meets the patentability criterion of "inventive step".

The drawing depicts a schematic longitudinal section of a device.

The proposed device for jamming contains a starting device 5, a cylindrical housing, consisting of sections 1 and 2, rigidly connected by adapters 3 and 24, containing a payload of 10, 11 and 12. Moreover, in the closest to the starting device 5 of section 1, the payload 10 is made in the form of a metal powder (for example, powder) and placed in a toroidal shell 9 of non-metallic material. The shell 9 is mounted on a guide rack 14, made in the form of an axial tube with knives 15, the cutting parts of which are facing in the direction of the shell. The payload 10 is separated from the knockout charge 21 by a piston 19 with a set of partitions-wad 18 and preloaded by the compensator 31. In the adapter 3 there are pyro-retardants 22 and knockout charge 21, in the bottom part 4 there is a starting device 5 containing an electric igniter 6 and a propellant charge 7. V the cavities of the adapters 3 and 24, an initiating charge 23 is installed, providing pyrotechnic communication with the pyro-retarders 22, 25 and expelling charges 21 and 26 of the sections, on the one hand, and the pyro-retarder 13, the propelling charge 7 and the igniter 6 of the starting devices 5, on the other hand.

The inventive device operates as follows.

Its launch begins with the supply of an electric current pulse to the contact of the electric igniter 6, the pyrocharge of which gives out a force of fire initiating a propelling charge 7. The hot gases of the latter break through the membrane 17 and the device, overcoming the resistance of the trigger lock device, is fired. Simultaneously, hot gases of the propellant charge 7 initiate a pyro-retardant 13 through the calibrated hole of the sleeve 16. The latter activates an initiating charge 23 with its hot gases, which initiate the pyro-retardants 22 of the adapter 3 and the pyro-retarders 25. After the time specified by the pyro-retarders 22, the expelling charge 21 is triggered, the hot gases of which press to the wad-seals 18, 20 and the piston 19 through the toroidal shell 9 to the bottom 4, making its shooting. When a toroidal shell moves with a payload in the cavity of the section, it is cut crosswise with knives 15 with the subsequent ejection of parts of the shell and the payload in the direction opposite to the movement of the device along the path. Moreover, wads and a cross-shaped shell take on hot gasses of expelling charge 21, contributing to the maintenance of payload 10. The metal powder dispersed in the atmosphere forms an aerosol cloud that is effective in a wide spectrum of the IR wavelength range for 20 ... 30 s. After the time set by the pyro-retarder 25, the expelling charge 26 is activated, its hot gases, by applying pressure through the baffle 27 to the half-cylinders 28, shoot off the top cover 8 and eject the payload 11 and 12 from the remaining sections of the device (in the direction of the latter).

Payload elements 12 and hot payload elements 11, after being ejected from section 2, form an aerosol formation in the atmosphere that is effective in the infrared and radio wave ranges.

The proposed design of the device for jamming provides setting at a given range at a given time an aerosol formation (in the form of separate clouds from different payloads), effective in a wide range of infrared and radio wavelength ranges with a long effective time (20 ... 30 s ) Moreover, depending on the purpose, the interference cloud in the form of a multilayer aerosol curtain can have a different structure and density, contrast against any background at any time of the year in any weather condition, providing effective protection of objects from the WTO equipped with combined guidance systems.

The conducted field tests confirmed the effectiveness of the use of this device.

Claims (4)

1. A device for jamming, including a metal cylindrical housing in which a payload is placed installed along the longitudinal axis of the housing, a hollow central channel, an outlier separated from the payload by a piston, an upper resettable cover, and also a starting device containing an electric igniter, propelling a charge and a pyro-moderator located in the bottom of the body and pyrotechnically connected with a knockout charge, characterized in that the body is made of several sections, rigidly connected to are adapters, the payload is located in the indicated sections and is made of various types of materials operating in the optical and radio wave radiation ranges, and the section closest to the launcher contains a payload in the form of a metal powder placed in a toroidal shell of non-metallic material, which is mounted on guide rack, made in the form of an axial tube with knives, and the piston is made with a set of partitions - wad. 2. The device according to claim 1, characterized in that the knockout charge is placed in each adapter, which are also equipped with pyro-retardants, the initiating charge is placed in the cavity of the adapters and pyrotechnically connected on the one hand with the pyro-retardants and knock-off charges of the adapters, and on the other hand, with the pyro-moderator , propelling charge and electric igniter of the starting device, while the knockout charge in the section closest to the starting device is installed in the adapter with the possibility of shooting the payload in the opposite direction bying movement devices for trajectory. 3. The device according to claim 1, characterized in that the knives face the cutting part toward the toroidal shell. 4. The device according to claim 1, characterized in that the metal powder is made in the form of powder.