RU2510484C1 - Hand grenade launcher "boloteya" grenade including warhead with fragmentation subshells - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: proposed grenade comprises jet engine at its rear, trajectory fuse at mid part and warhead composed of a set of fragmentation subshells. Every subshell comprises delay fuse. Pyrotechnical separation charge is arranged between trajectory fuse and set of subshells. The latter is arranged in cylindrical case. Said case can be detached from jet engine to throw subshells from said case in direction opposite to grenade path by self-contained blow-out powder charges. Subshells feature spherical shape. Said warhead can be supercaliber and caliber component.

EFFECT: higher hitting efficiency.

8 cl, 3 dwg

Description

The invention relates to ammunition, and more particularly to fragmentation grenades of hand grenade launchers.

Known standard fragmentation grenade OG-7 with a fuse [1] to the RPG-7 hand-held anti-tank grenade launcher. When a gap occurs on the surface of the earth, most of the fragments go into the ground and the upper hemisphere. The grenade is not capable of hitting targets in the trenches.

In the patent [2], the Tverityanka cluster-fragmentation-fragmentation high-caliber grenade with submunitions of an air rupture is proposed, which creates an elongated field of destruction, compensating for the error of the rupture point in range. The grenade contains a cluster warhead with fragmentation submunitions, a jet engine in the rear of the grenade, a warhead located along the axis of the grenade in the form of a set of fragmentation submunitions (throwing blocks) in the front of the grenade, made in the form of low cylinders, each of which contains a fuse with a delay located between the engine and the set of submunitions, a trajectory fuse in the middle part of the grenade and the pyrotechnic charge of separation between the trajectory fuse and a set of submunitions. This design is adopted as a prototype.

The disadvantages of the prototype primarily include the unfavorable form of submunitions, which does not provide an isotropic fragmentation field. Even with the supposed provision of a stable flight of submunitions after separation with flat ends forward, when the fragments fly apart, dead zones will form between the axial flows of the finished striking elements (GGE) and the circular fields of the shell fragments. In general, ensuring stable flight of sub-shells in the form of flat disks is associated with serious difficulties. All this makes it difficult to obtain a stable configuration of the affected area on the ground.

In the patent [2], the method of breeding throwing blocks (submunitions) along the trajectory is specified as follows: "The blocks have a difference in external shape, which ensures their divergence along the flight direction and in the transverse direction." Detailed calculations showed that it is almost impossible to implement this method with a given configuration of the front section and the subsonic flight speed of the grenade.

A significant drawback of the design is the difficulty of ensuring the tightness of the joints of submunitions. The patent does not indicate methods of fastening submunitions to each other and separating them after firing a set.

The present invention addresses these drawbacks.

The technical solution consists in the fact that the set of sub-shells is located in a cylindrical body, the body with the set of sub-shells (warhead) is made detachable from the jet engine, the sequential ejection of sub-shells from the body is made back (against the direction of movement of the grenade) under the influence of autonomous expelling powder charges, the sub-shells have spherical shape, the warhead can be performed as nadkalibernoy, and caliber.

Figure 1 - General view of the grenade; figure 2 is a longitudinal section of the front of the grenade; figure 3 - the execution of submunitions.

General view of the grenade is presented in figure 1. It belongs to the class of grenades placed entirely in the barrel of a grenade launcher (RPG-18 “Mukha”, RPG-22 “Net”, RPG-26 “Aglen”, RPG-27 “Tavolga”, RPG-29 “Vampire”). The grenade contains a jet engine 1 with the stabilizer 2 feathers fixed on it (shown in the open state), a trajectory fuse 3 and a cluster warhead 4 attached to it, filled with submunitions 5.

Figure 2 presents a section of the front of the grenade. Trajectory fuse 3 contains a powder charge 6 of the warhead compartment and a non-contact receiver of installations 7. A cylindrical body 9 of the warhead is connected to the fuse with a thread 8. In the housing there is a set of spherical sub-shells 5 separated by diaphragms 10. A bottom 13 is adjacent to the set of sub-shells. The body of the warhead, the diaphragm and the bottom are made of high-strength carbon fiber. In the annular grooves of the diaphragms there are autonomous powder charges 11 of firing submunitions with autonomous ignition blocks 12. The ignition module contains an inertial trigger sensor, a moderator with different deceleration times for each submunition, and an ignitor. The front of the housing is made in the form of a head cap 14.

Figure 3 presents embodiments of spherical submunitions. The submunition consists of a fragmentation shell 15, an explosive charge (BB) 16 and a fuse 17 placed therein. The fuse contains an inertial trigger sensor, a moderator, a safety mechanism and a detonator. The submunition is equipped with a latch that ensures its predetermined position in the warhead housing (not shown in FIGS. 2, 3).

In the embodiment shown in figa, the fragmentation case is made in the form of a solid hollow sphere of natural or predetermined crushing (the second option is shown). The housing can be made of steel or of heavy alloys based on tungsten or tantalum. The casing is equipped with a threaded point 18 into which the fuse 17 is screwed. In the embodiment shown in Fig. 36, the fragmentation casing is made of two hemispheres connected by a thread 19 and containing ready-made striking elements (GGE) 20. The explosive charge is also made composite. The fuse 17 is located inside the explosive charge.

Cases and GGE can be made of both steel and heavy alloys based on tungsten, tantalum, etc.

A sufficiently high efficiency, although less than in the case of air-blasting sub-shells, can be obtained by using spherical ground-based blasting submunitions with an impact fuse (such as the well-known ball submunition SHOAB-0.5 to cluster bombs).

The trajectory fuse grenades can be made temporary, or non-contact, or command type. The most promising is a temporary fuse of electronic type. It contains a power source, a contact or non-contact receiver of the time settings, a timing device, an igniter of the pyrotechnic charge of ejection of submunitions. The sub-projectile fuse contains an inertial cocking and launch mechanism of the moderator, a moderator, a detonator. The inertial mechanism has two cocking steps. There are mechanical and electronic versions of the fuse. In the second case, the fuse contains either a battery power source, or a pulse, fired when fired.

Grenade action

The case of firing on a flat trajectory of a grenade with a temporary fuse is considered. The shooter is equipped with a laser rangefinder and ballistic computer. A device for contactless input of a temporary installation into a fuse is installed on the barrel of a grenade launcher made of non-metallic material, such as fiberglass.

Before the shot, the range to the target, the range to the point of firing of the warhead and the flight time to this point, which is introduced in a non-contact way through the radiolucent wall of the barrel into the trajectory fuse, are determined. When fired, the device starts counting the time of the trajectory fuse and turns on the first stage of cocking fuses of submunitions.

When approaching the grenade at the calculated point, the fuse gives a command to trigger the powder charge 6 of the warhead compartment with thread cutting 8. Inertia sensors of starting igniter blocks 12 are triggered and the autonomous powder charges 11 are sequentially ignited and the submunitions are sequentially ejected from the body.

At the time of the ejection of the submunition, the inertial sensor of its fuse 17 starts the moderator, which, after a specified period of time has passed, gives an impulse to detonate the submunition. As a result, a chain of discontinuities is formed over the target, compensating for the total error of the grenade trajectory detonation system.

The proposed design can be used both in grenades with a super-caliber warhead (RPG-7 grenade launcher), and in grenades with a caliber warhead (RPG-18 "Fly", RPG-22 "Net", RPG-26 "Aglen", RPG-27 "Meadowsweet", RPG-29 "Vampire").

Effect: the introduction of infantry weapons of a new type of ammunition.

Literature

1. A.A. Lovi, V.V. Korenkov, V.M. Bazilevich, V.V. Korablin. Domestic anti-tank grenade launchers. Russian infantry weapons, 2001.

2. RU 2362962.

Claims (8)

1. A grenade for a hand grenade launcher, containing a cluster warhead with fragmentation submunitions, containing a jet engine in the rear of the grenade, a trajectory fuse in the middle, and a warhead in the front as a set of fragmentation submunitions (throwing blocks), each of which contains a fuse with a slowdown, while between the traction fuse and the set of submunitions there is a pyrotechnic separation charge, characterized in that the set of submunitions is located in a cylindrical body, the housing is made yaemym from the jet engine to sequentially eject subsnaryadov from the housing back (against the direction of motion of grenades) under autonomous expelling propellant charge, subsnaryady have a spherical shape, the warhead may be formed as nadkalibernoy and caliber. 2. Grenade according to claim 1, characterized in that the trajectory fuse is made temporary, or non-contact, or command type. 3. The grenade according to claim 1, characterized in that between the spherical submunitions in the housing there are diaphragms, in the annular grooves of which autonomous powder charges of the ejection of the submunitions with autonomous ignition blocks are placed. 4. The grenade according to claim 1, characterized in that the igniter unit contains an inertial start sensor, a moderator with different deceleration times for each submunition and an igniter. 5. Grenade according to claim 1, characterized in that the body of the warhead, diaphragm and bottom are made of high-strength lightweight material, such as carbon fiber. 6. The grenade according to claim 1, characterized in that the spherical submunition consists of a fragmentation shell, an explosive charge and a fuse located therein, the fuse comprising an inertial launch sensor, a moderator, a safety mechanism and a detonator. 7. The grenade according to claim 6, characterized in that the fragmentation case is made in the form of a hollow hollow sphere or in the form of a composite structure of two hemispheres connected by a thread. 8. Grenade according to claim 6, characterized in that the fragmentation case is made with either natural or predetermined crushing, or with ready-made striking elements, while the case and ready-made striking elements can be made of both steel and heavy alloys basis of tungsten or tantalum.

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