RU2510483C1 - "luzhana" in-beam grenade with warhead opening device for hand grenade launcher - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: proposed grenade comprises warhead, explosive charge, ply of premade hitting elements on block surface, detonator and trajectory fuse. Grenade comprises warhead opening device. Warhead consists of several lengthwise projectile blocks. Said blocks are articulated with grenade body. Said blocks can turn to position perpendicular to grenade axis. Said block features cross-section shaped to incomplete sector. Said detonator is arranged at block end and connected with trajectory fuse. Jet engine is introduced into this grenade. Said engine is arranged at grenade rear. Trajectory fuse is arranged between jet engine and warhead. Axes about which projectile blocks turn are located at fuse front end. Fragmentation plates are arranged at projectile bock inner surface.

EFFECT: higher hitting efficiency.

5 cl, 6 dwg

Description

The invention relates to ammunition, and more specifically to anti-personnel beam grenades of hand grenade launchers.

It is known that beam grenades, i.e. grenades, which create an axial beam of ready-made striking elements (GGE) during an explosion, provide a higher probability of hitting targets than conventional grenades with a circular fragmentation field. In [1], a grenade with an over-caliber beam warhead for an RPG-7 type grenade launcher was proposed.

Recently, the development of hand grenade launchers is on the way to developing caliber schemes with grenades that are entirely located in the barrel. These include domestic RPG-18 "Fly", RPG-22 "Net", RPG-26 "Aglen", PRG-27 "Tavolga", RPG-29 "Vampire". For the grenades of these grenade launchers, an increase in the contact area “explosive (“ BB) - GGE layer ”can be achieved by using side grenade sections for throwing GGE.

A design of this type with an umbrella device for opening the warhead was proposed in [2]. An ammunition (aerial bomb) contains a warhead consisting of an axial rod, several longitudinal throwing blocks pivotally attached to the front of the rod and connected to the umbrella mechanism to rotate the blocks to a position perpendicular to the axis of the rod, while the throwing block has a cross section in the form of an incomplete sector, contains an explosive charge, a fragmentation plate (a layer of ready-made striking elements (PE) on the outer surface of the block and a detonator located in the front of the block and connected to the trajectory m fuse, and the trajectory fuse contains blocks sequentially turning on the mechanism for opening the warhead (mechanical or pyrotechnic) and its detonation.

This design is adopted as a prototype of the invention.

The prototype has several disadvantages. The umbrella mechanism for opening the warhead is quite complex, has a significant mass and cost. Disclosure of the warhead occurs against the oncoming air flow, which requires considerable effort in the disclosure mechanism.

. При этом ПЭ будут разлетаться как минимум в этом же углу, т.е. при N=3 угол разлета составит 120°, при N=4-90°, при N=6-60°.Among the disadvantages of the prototype is also the unfavorable cross-sectional shape of the propelling unit. The block is obtained by dividing the cylinder into N sector parts. The outer surface of the block thus represents a part of the cylindrical surface of the grenade with a central angle $$2\varphi =\frac{{360}^{\circ }}{N}$$

. In this case, the PE will fly apart at least in the same corner, i.e. at N = 3, the expansion angle will be 120 °, at N = 4-90 °, at N = 6-60 °.

Obviously, the expansion angles are excessively large, which will lead to a rapid decrease in the PE field density.

The present invention addresses these drawbacks. The technical solution consists in introducing a jet engine located in the rear of the grenade into the grenade, a trajectory fuse is located between the jet engine and the warhead (warhead), the axes around which the longitudinal throwing blocks rotate are located on the front end of the fuse, fragmentation plates located on the inner surface of the throwing blocks.

Illustrations: figure 1 - General view of the grenade; figure 2 is a cross section of the warhead; figure 3 - the knock transmission unit from the fuse to the throwing blocks; 4 is a cross-section of various designs throwing blocks; figure 5 - the basic elements of equipment grenade launcher and a contactless input circuit installations in the fuse; 6 is a cross section of the total beam of damaging elements.

A general view of the grenade is shown in figure 1 (a - in the initial state, b - after the disclosure of the warhead). The grenade consists of a jet engine 1, a trajectory fuse 2, a deployable warhead 3 and a dropable head cap 4. The warhead consists of longitudinal throwing blocks 5, which can be rotated 90 ° around the axles 6 mounted on the front end of the fuse. At the rear of the engine, an opening stabilizer 7 is installed.

The cross section of the warhead is shown in figure 2. The warhead consists of several longitudinal throwing blocks (3 ... 6) located parallel to the axis of the grenade. The block contains a housing 8 with a charge of explosive (BB) 9 and a fragmentation plate 10 with various designs of the damaging elements located on the inner surface of the block. Fixation of the throwing blocks in the initial state is carried out by the head cap 4. On the axis of the warhead there is a pyrotechnic charge 11 connected to the fuse 2.

Figure 3 shows a longitudinal section of the knock transfer unit from the fuse to the charges of the 9 throwing units (12 is the detonation wiring of the fuse, 13 is the detonator of the throwing units, a is the state during the rotation of the throwing unit, b is the state after the warhead is opened).

Cross sections of various designs of propelling units are shown in FIG. In the design of FIG. 4a, the fragmentation plate is made in the form of a single-layer set of 14 ready-made compact striking elements (GGE), while the GGE can be made of both steel and heavy alloys based on tungsten or tantalum. The combat units of this performance are intended mainly to combat manpower. On figb on a thin-walled plate 15 extruded meniscus recesses 16, providing when the explosion is formed of explosive bullets ("shock nuclei"). This type of warhead is mainly intended for the destruction of lightly armored vehicles, including combat helicopters.

On figv fragmentation plate is made in the form of a set of rods 17 of square cross-section, laid along the throwing unit and alternately connected by the upper and lower ends. The explosion forms a high-speed “whip”, causing continuous cuts of the panels of aircraft, including unmanned aerial vehicles.

In all these cases, the curvature of the inner surface of the propelling unit, in the most general case, the radius r (Fig. 4), is selected from the conditions for creating the optimal configuration of the cross section of the total beam of damaging elements.

Grenade action

The grenade launcher is equipped with a laser rangefinder, an outdoor air temperature meter, a ballistic computer, a device input device into the grenade trajectory fuse and a power source. In reusable caliber grenade launchers (for example, RPG-29 "Vampire") all of these devices can be placed on the barrel of a grenade launcher.

For disposable grenade launchers, devices are placed outside the grenade launcher, for example, on a helmet (Fig. 5, instrument block 18, the launcher barrel is shown with a cut). Entering installations into the grenade fuse from the installer 19 is carried out in a non-contact manner through the radiolucent wall of the grenade launcher.

The action when using a temporary fuse is considered. After a shot is fired when a grenade approaches the opening point of the warhead, the fuse gives a command to ignite the pyrotechnic charge 11, under the influence of the gases of which the head cap 4 is reset and the propelling units 5 rotate around the axes 6. The rotation is facilitated by an incoming air flow. After full disclosure of warhead detonation wiring 12 comes into contact with the detonators 13 of the blocks, i.e. removal of the protection stage is carried out. After that, the fuse gives a command to detonate the throwing blocks, as a result of which a total beam of damaging elements is formed. Cross sections of the beam are shown in Fig.6 (a - throwing blocks made in figa, b; b - throwing blocks made in figv). The beam configuration should ensure the absence of “dead” zones in the beam cross section.

Effect: increase the combat effectiveness of beam grenades for hand grenade launchers.

Literature

1. RU 2118788.

2. Prev US Pat. 2340652 Germany, F42B 13/50, declared. 08.19.73, publ. 04/40/74.

Claims (5)

1. Beam grenade with a device for opening the warhead, comprising a warhead consisting of several longitudinal throwing blocks pivotally attached to the body of the grenade, configured to rotate the blocks to a position perpendicular to the axis of the grenade, while the throwing block has a cross section in the form of an incomplete sector contains an explosive charge, a layer of ready-made striking elements on the surface of the block and a detonator located in the end part of the block and connected to the trajectory fuse, characterized We note that a rocket engine located in the rear of the grenade was introduced into the grenade, a trajectory fuse is located between the jet engine and the warhead, the axes around which the longitudinal throwing blocks are pivoted are located on the front end of the fuse, fragmentation plates are located on the inner surface of the throwing blocks. 2. The grenade according to claim 1, characterized in that the curvature of the internal surface of the throwing unit is selected from the conditions for creating the optimal configuration of the beam section of the striking elements. 3. The grenade according to claim 1, characterized in that the fragmentation plate of the throwing unit is made in the form of a single-layer set of ready-made compact striking elements, while the striking elements can be made of either steel or heavy alloys based on tungsten or tantalum. 4. The grenade according to claim 1, characterized in that the fragmentation plate is made in the form of a thin-walled plate with meniscus depressions extruded on it, providing for the formation of explosive bullets (shock nuclei) in an explosion. 5. Grenade according to claim 1, characterized in that the fragmentation plate is made in the form of a set of rods of square cross-section, laid along the throwing unit and alternately connected by the upper and lower ends.

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