EP3091326B1

EP3091326B1 - A recoilless gun

Info

Publication number: EP3091326B1
Application number: EP15166220.2A
Authority: EP
Inventors: Anton Alexandrovich Shchukin
Original assignee: Shchukin Anton Alexandrovich
Current assignee: SHCHUKIN, ANTON ALEXANDROVICH
Priority date: 2015-05-04
Filing date: 2015-05-04
Publication date: 2017-08-09
Anticipated expiration: 2035-05-04
Also published as: ES2639715T3; CY1119555T1; EP3091326A1

Description

The invention relates to military technology, namely to recoilless guns and can be used in armament systems for shootings on ground and air targets.
Object of the invention is a device being a thermal impulse machine, which provides for an increased firing range and that minimizes a recoil impulse due to a constructive solution that includes a two-stage scheme of throwing shells, prepared damaging elements, other product mix necessary for solving various challenges including civil use.
Known are recoilless guns, containing a counterrecoil device that basically represents a hydraulic shock absorber [1].
One of the drawbacks of such devices is that they are constructively complex, cumbersome and unreliable during long-term operation.
Document US 4,676,136 refers to an apparatus for recoilless firing of projectiles from a launching tube comprises within the launching tube a forward brake ring, a forward sabot, a propellant charge with an ignition element or screw, a rear sabot, a counter-mass, and a rear brake ring, arranged within the launching tube in the sequence listed. Upon ignition of the propellant charge, high acceleration forces are created by the ensuing high peak pressures, which consequently requires a robust construction. In order to avoid this drawback, according to the invention the aforementioned disadvantage can be eliminated by using a propellant charge comprising a first cylindrical propellant charge body and a second annular propellant charge body which surrounds this first cylindrical propellant charge body.
The closest to the invention is the recoilless gun containing a gun tube with a breech, the rear end of which is provided with a nozzle orifice, and balancing weight placed in the channel of the gun tube between the propellant charge and the rear end of the breech [2].
The task of the proposed invention is the creation of a recoilless gun of an increased firing range with minimal recoil.
The mentioned technical result in the proposed device is achieved by using a two-stage scheme of throwing, characteristics of the shell construction and the presence of a counterweight.
The new combination of components allows due to:

An electrical or other initiator - to provide for the initiation of the starting propellant charge;
The starting propellant charge - to provide an initial impulse to the shell and a subsequent initiation of a propellant charge of the shell;
The case of the shell and of a piston comprising a piston rod and a piston head at the breech portion of the gun tube, the piston rod hermetically entering the shell case, while the piston head rests on the counterweight - to provide an initial impulse to the shell and subsequent initiation of a propellant charge of the shell;
The piston head of the piston and the counterweight - to provide for a reduction of the recoil impulse of the starting propellant charge and of the impulse due to an increase of pressure due to the flow of gases of the propellant charge of the shell;
The propellant charge - to provide the initial exiting speed of the projectile or of the prepared damaging elements;
The projectile or the prepared damaging elements - to provide realization of the basic task of the gun or the system using it according to its predestination;
The gun tube - to provide an impulse effect on the shell, the counterweight and the firing in a particular direction along the axis of the gun tube.

The main idea of the invention is described in the drawing (fig. 1), which shows one of the possible technical solutions.
The recoilless gun (fig. 1-a) consists of a gun tube 1, a shell 2, a counterweight 3, an electric or other initiator 4 and a starting propellant charge 5.
The shell (fig. 1-b) consists in turn of a case 6 including a projectile or prepared damaging element 7 and a propellant charge 8, a piston representing a piston rod 9 provided at the breech portion of the gun tube with a piston head 10, the piston rod 9 hermetically entering the shell case, while the piston head 10 rests on the counterweight.
Shooting from the recoilless gun occurs as follows (fig. 2).
When operating the initiator 4 (fig. 2-a) the subsequent initiation of the starting propellant charge 5 activates a movement of the shell case 6 and of the piston 9 and 10 in opposite directions along the gun tube, wherein the piston 9 and 10 is adapted to push the counterweight 3 for compensating the recoil impulse (fig. 2-b), thereby the exit of the piston rod 9 of the piston from the shell case 6 allows gases of the starting propellant charge 5 to penetrate into the shell case 6 through an opened after the exit of the piston orifice of transmission of the detonation time and to initiate the propellant charge 8 of the shell (fig. 2-c) which in turn, causes the increase of pressure in order to obtain the initial exiting speed of the projectile or the prepared damaging elements 7 (fig. 2-d), whereby the additional recoil impulse is compensated by the inertia of the progressive -motion of the shell case 6 in the direction of the shell, by the inertia and the gas pressure of the starting propellant charge and the flow of gases in the area of lower pressure through the orifice of transmission of the detonation time into the shell case 6, causing an acceleration of motion of the piston 10 and 9 of the counterweight 3 (fig. 2-e).
Therefore, the proposed invention allows to provide an increased firing range and a minimal recoil impulse by a constructive solution, that includes a two-stage scheme of throwing shells or prepared damaging elements, thereby being simple in terms of technology, that determines it's low costs in mass production and high "efficiency-costs" performance when solving problems according to predestination.

List of references

1. «Davis non-recoil gun», US patent No. 1395630
2. Victor Ron. Panzerfaust 3: Turbulent family, Magazine "Oruzhie" No. 1, 2012. page 48-53.

Claims

recoilless gun consisting of
- a gun tube (1),

- a body being a counterweight (3),

- a shell (2) consisting of a case (6) including a projectile or prepared damaging elements (7) and a propellant charge (8),

- an electric or other initiator (4) and

- a starting propellant charge (5),
wherein the shell (2) further comprises a piston comprising a piston rod (9) and a piston head (10) at the breech side of the gun tube, the piston rod (9) hermetically entering the shell case (6), while the piston head (10) rests on the counterweight (3),
wherein the starting propellant charge (5) is disposable in the area between the piston head (10) of the piston with the counterweight (3) and the shell (2),
wherein when operating the electric or the other initiator (4) the subsequent initiation of the starting propellant charge (5) activates a movement of the shell case (6) and of the piston (9, 10) in opposite directions along the gun tube (1) wherein the piston (9, 10) is adapted to push the counterweight (3) for compensating the recoil impulse, thereby the exit of the piston rod (9) of the piston from the shell case (6) allows gases of the starting propellant charge (5) to penetrate into the shell case (6) and to initiate the propellant charge (8) of the shell (2) which, in turn, causes the increase of pressure in order to obtain the initial exiting speed of the projectile or the prepared damaging elements (7), whereby the additional recoil impulse is compensated by the motion of the shell case (6) and the flow of gases of the propellant charge (8) in the area of lower pressure through the orifice generated in the shell case (6), causing an acceleration of motion of the piston and of the counterweight (3).