RU2202081C2 - Hand grenade launcher - Google Patents

Abstract

FIELD: military equipment, development of portable recoilless disposable grenade launchers. SUBSTANCE: given hand grenade launcher has launching tube-container with trigger assembly and handle, grenade with jet engine and countermass. Countermass in the form of thin-walled barrel attached to engine is uniaxially mounted for displacement in launching tube-container. Grenade is installed in barrel and is pulled towards engine as far as it goes by means of tightener positioned in free space of rear part of grenade in the form of bar of variable diameter. Larger diameter of it with ring throttle clearance is located in cylindrical perforated sleeve of front bottom of engine transferring to precombustion chamber. Bottom of sleeve has throttling holes and is pulled towards grenade tightener by calibrated bursting element. EFFECT: recoilless launch, increased speed and range of grenade flight, constant length of tube-container without increase of passive mass of grenade launcher. 2 dwg

Description

 The invention relates to the field of armament and can be used while developing portable non-returning single-use grenade launchers and takes into account the ever-increasing demands to improve the perfection of their designs.

 Known manual grenade launcher [1], consisting of a launch tube, in the back of which, using hooks, a container with a rocket placed in it is connected, including a warhead with a conventional comulative or fire charge, a rocket engine with a solid fuel charge, a nozzle and a stabilizer made, for example, in the form of a cylindrical part of the housing of the rocket engine. In this case, the solid fuel jet engine is placed in a container rigidly fastened to the launch tube.

 A prerequisite for this and similar grenade launcher design is that the working time of the powder charge is limited by the longitudinal dimensions of the launch tube. The charge should burn out before the exit section of the nozzle exits the launch tube. The disadvantages of this design of the grenade launcher are the large longitudinal dimensions in the combat position, due to the above condition and the sequential arrangement of the launch tube and the container with the projectile, and subject to an increase in the range and speed of the projectile will lead to a further increase in the length of the launch tube in the passive mass.

 Known manual anti-tank grenade launcher (RPG) "Alkotan" [2], in the construction of which the principle of the "Davis gun" is applied, that is, to counter the recoil force from the back of the launch tube, the "counter mass" is pushed back. RPG consists of a launch tube-container with a grenade and a jet engine (shot), firing mechanism, anti-mass and fire control system.

 However, this design of the grenade launcher, with all its advantages, has significant drawbacks, namely, the counter mass pushed back is not safe for the operator (arrow) and leads to an increase in the total mass of the shot without increasing speed in the grenade's flight range.

 The objective of the invention is to eliminate the above disadvantages, namely: ensuring an unsuccessful launch, increasing the speed and sighting range of a grenade with a constant length of the launch tube-container without increasing the passive mass of the grenade launcher.

 This task is achieved by the fact that in a hand grenade launcher containing a launch tube-container with a firing mechanism and a handle, a grenade, a jet engine in a counter-mass, a counter mass is mounted coaxially with the ability to move in the form of a thin-walled barrel attached to the engine, while a grenade installed in the barrel and pulled all the way into the engine for the tensioner installed in the free volume of the rear of the grenade, in the form of a rod of variable diameter, the larger diameter of which is circular rosselnym gap is set in a cylindrical perforated bottom glass front engine, rolling in the prechamber, wherein the bottom of the cup formed of throttle holes and tightened tensioner grenades calibrated rupture element.

 The essence of the invention lies in the fact that this design of the grenade launcher provides a reliable exit of the grenade at a high speed while increasing the impact range, as well as damping the recoil force by installing a non-thrust back mass made of the same length with the launch tube-container, and is an element design of the propulsion system.

In the proposed figure 1, 2 shows the proposed design of a hand grenade launcher, where:
1 - launch tube-container with a trigger in the handle;
2 - grenade;
3 - jet engine;
4 - counterweight;
5 - thin-walled trunk;
6 - a tensioner;
7 - free volume of the rear of the grenade;
8 - a larger diameter of the bar;
9 - annular throttle clearance;
10 - front bottom of the engine;
11 - a cylindrical perforated glass;
12 - prechamber;
13 - the bottom of the glass with throttle holes;
14 - calibrated bursting element;
15 - igniter;
16 - brush powder charge.

 The manual grenade launcher operates as follows: the operator (shooter), holding the handle with the trigger, sets the grenade launcher on his shoulder, lands on the target and launches the grenade by pressing the trigger. The operation of the grenade launcher is fleeting, and if we consider the process of starting the grenade in time, this process is carried out as follows: when the trigger of the handle of the pipe-container 1 is pressed, the igniter 15 of the jet engine 3 fires the powder charge of the pre-chamber 12, the powder gases leaving the pre-chamber ignite the main brush powder charge 16, while the powder gases rush under high pressure through the throttle holes of the bottom 13 of the glass, the perforated cylindrical glass 11 and through the rings evoy throttle clearance 9 into the free volume of the rear part 7 of the grenade 2. When the atom is counter-mass 4, consisting of a thin-walled barrel 5 fastened with a jet engine 3 and a grenade 2, under the action of the thrust of the jet engine 3 it starts moving forward relative to the launch tube-container 1. It simultaneously increases the pressure in the back of the free volume 7 of the grenade 2 and, reaching the critical design pressure, the calibrated bursting element 14 breaks off, tightening the tensioner 6 with the bottom of the cup 13. At the same time, the grenade 2 rushes I forward, having received additional speed, and counter-mass 4 brakes and loses speed, remains in the launch tube-container 1 or falls forward with a minimum speed.

 After starting the grenade 2, the hand grenade launcher cannot be restored and is thrown away.

Sources of information
1. British patent 1288732, publ. 09/13/72, class 3A, F 42 B 9/12 - analogue.

 2. The journal "Foreign Military Review", ed. Red Star, Moscow, 1995, 8 - pp. 21-22, Fig. 4 - prototype.

Claims (1)

 A hand grenade launcher comprising a launch tube-container with a firing mechanism and a handle, a rocket-propelled grenade and a counter-mass, characterized in that the launch tube-container is coaxially movable with a counter-mass in the form of a thin-walled barrel attached to the engine, while the grenade is mounted in the barrel and pulled all the way to the engine for the tensioner installed in the free volume of the rear of the grenade in the form of a rod of variable diameter, the larger diameter of which with an annular throttle clearance become perforated in a cylindrical glass bottom front engine, rolling in the prechamber, wherein the bottom of the cup is configured throttle holes and tightened tensioner grenades calibrated rupture element.

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