RU2741889C1 - Explosive firing element of aerial explosion of cluster ammunition - Google Patents

Abstract

FIELD: weapons.

SUBSTANCE: invention relates to artillery ammunition, in particular, cartridge ammunition consisting of several submunitions intended for destruction of manpower, having armoured jackets, and light-armoured equipment. Technical result is achieved by the fact that the firing fragmentation element of the ground blasting includes a body made in the form of a cylindrical barrel with annular grooves along the outer surface, filled with an explosive substance, a fuse located on the open end side of the shell, wherein thin-walled metal cap is fitted on firing device body on the fuse side with wall thickness of 0.01–0.02 of case diameter and its height being 2/3 of height.

EFFECT: technical result is significant expansion of range of types of soil, in which there is a stable operation of a firing element.

4 cl, 1 dwg, 1 tbl

Description

The invention relates to artillery ammunition, in particular cluster ammunition, consisting of several sub-ammunition designed to defeat manpower with body armor and lightly armored vehicles.

Known anti-personnel fragmentation mine of a remote installation, having a bouncing warhead, an installation device that allows the mine to be located on soils of different density (see patent RU 2493535 C1).

Also known are foreign analogues of bouncing mines, such as BLU-43 / B, BLU-92 / B, M67, M72, M74 (USA), TOM-1C (Russia), etc. (Catalog “Jane's Mines and mine clearance. Edites by Colin King. Edition 2002-2003 ").

Known combat element 3-O-30 for a cluster munition, containing a body made in the form of a glass filled with explosives, with annular grooves on the outer surface, a fuse located at the open end of the combat element and a laid stabilizer, which was taken as a prototype.

This combat element has a significant drawback, which is that when the combat element is triggered in low-density soils, the gases from the powder firecracker do not transmit impulse to the combat element, but dissipate in the soil, thereby the combat element does not have enough momentum (thrust) to fly out of the ground and rise to a given height.

The specified problem is solved by the fact that a thin-walled metal cap is placed on the side of the open end of the glass in a combat element containing a body in the form of a glass with annular grooves along the outer surface.

It is reliable if the metal cap is made of steel with cold-worked walls and is rolled into a groove on the body of the combat element, thereby ensuring the operability of the structure when a fragmentation cluster projectile is triggered at all stages of action.

It is advisable if the metal cap is placed flush with the walls of the body, which ensures a constant value of the structure diameter (the cup of the combat element and the cap), thereby providing the initial dimensions of the combat element.

It is effective if the thickness of the cap is in the range of 0.01… 0.02 of the body diameter. The smallest value is explained by the minimum value of the ultimate strength at which the cap withstands the load when the combat element leaves the ground. The maximum value of the cap thickness is due to the fact that with a further increase in thickness, the thickness of the combat element body decreases and, as a result, the body mass decreases - the mass of the combat element fragments decreases when triggered in the ground and, as a result, the effectiveness of the action decreases.

The invention is illustrated by a drawing, where figure 1 shows a general view of a combat element with a metal cap placed.

The fragmentation combat element contains a housing 1, made in the form of a glass and having annular grooves on the outer side of the housing wall. On the side of the closed part of the body there is an explosive 2 and a stabilizer 6 is fixed, and on the side of the open part of the body there is a fuse of a combat element 3 with a powder firecracker 7, fixed with a ring 4. From the side of the open part of the body, a cap 5 is put on the outer surface.

The method of placing a metal cap on the body of a combat element is implemented as follows. The part of the casing wall on which the cap is placed is machined so that the cap is flush. The outer surface of the body is bored to a height of 2/3 of the body height.

A thin-walled metal cap with cold-worked walls is put on the body of the combat element flush from the side of the open end and rolled into the groove.

The combat element works as follows.

A cluster artillery projectile is opened at a given trajectory, due to the action of centrifugal forces, fragmentation warheads are scattered into the air. Due to the work of trail stabilizers, combat elements fly up to the surface of the earth at a given speed and then sink into the ground. After the delay time has elapsed, a powder-hinged firecracker is triggered for the operation of the fuse, a combat fragmentation element is thrown to a height of 1 ... 1.5 m and undermined.

A comprehensive test of throwing a model in three types of soil was carried out with a further jump:

Combat assembly type Soil designation, digit-percentage of moisture Decoding Density Depth of implementation Jump Result Test Comments Model without cap C3 Dry loam 1800 kg / m ³ Exit from the ground to a height of more than 1.5 m The penetration depth does not exceed 120mm.
The work to extract the warhead from the soil is minimal compared to the soil below Layout with cap C3 Dry loam 1800 kg / m ³ Exit from the ground to a height of more than 1.5 m Model without cap P12 Wet sand 1700 kg / m ³ Absence from the ground The penetration depth is 1.5 ... 2 times the penetration depth on dry loam.
The work on extracting the warhead from the soil is similar in size to the work from the C3 soil Layout with cap P12 Wet sand 1700 kg / m ³ Exit from the ground to a height of 1.43 m Model without cap C11 Wet loam 1600 kg / m ³ Absence from the ground Deep introduction of the model into the ground.
The work of extracting a model from the soil is up to 6 times higher than the work of extracting from previous soils Layout with cap C11 Wet loam 1600 kg / m ³ Exit from the ground to a height of 1.19 m

The results obtained allow us to draw the following conclusions: in softer soils, the energy of the jump charge of a standard combat element is spent not on ejecting the combat element from the soil, but on the formation of a cavity (gas bag) under the combat element (S11 and P12 soils), and as a result, the element is not ejected. going on. When using a combat element with a steel cap, the bulk of the energy is spent on ejection of the element from the ground due to the conservation of the energy of gases from the powder charge in the volume of the cap.

Claims (4)

1. Combat fragmentation element of ground blasting, containing a body made in the form of a cylindrical cup with annular grooves along the outer surface, filled with explosive, a fuse located on the side of the open end of the glass, characterized in that a thin-walled metal is put on the body of the combat element from the fuse side a cap, the wall thickness of which is in the range of 0.01-0.02 of the element body diameter, and its height is 2/3 of the height. 2. The combat element according to claim 1, characterized in that the cap is made of steel with cold-worked walls. 3. Combat element according to claim 1, characterized in that the cap is positioned flush with the outer surface of the body. 4. Combat element according to claim 1, characterized in that the open edge of the cap is rolled into the groove of the housing.

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