RU2669233C2 - Method and device for giving the rotation to the destructive element - Google Patents

Method and device for giving the rotation to the destructive element Download PDF

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Publication number
RU2669233C2
RU2669233C2 RU2015106554A RU2015106554A RU2669233C2 RU 2669233 C2 RU2669233 C2 RU 2669233C2 RU 2015106554 A RU2015106554 A RU 2015106554A RU 2015106554 A RU2015106554 A RU 2015106554A RU 2669233 C2 RU2669233 C2 RU 2669233C2
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chamber
rotation
striking
barrel
weapon
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RU2015106554A
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Russian (ru)
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RU2015106554A (en
Inventor
Валерий Михайлович Дороготовцев
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Валерий Михайлович Дороготовцев
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41AFUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A21/00Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
    • F41A21/12Cartridge chambers; Chamber liners

Abstract

FIELD: small arms.
SUBSTANCE: rotation of the injuring element before the shot is attached by rotating the chamber, which is performed with the possibility of axisymmetric controlled rotation as a separate structural element of the weapon.
EFFECT: specified speed of rotation of the attacking element, the initial velocity of the attacking element, the range, the target range, the accuracy of the combat are increased.
3 cl, 5 dwg

Description

The group of inventions relates to mechanical engineering, namely arms production, and is aimed at solving the problem of gyroscopic stabilization of the flight of bullets, shells and other damaging elements by giving them rotation before firing from smooth-bore and rifled kinetic weapons. The invention can be used to create weapons based on the acceleration of the striking element by the pressure force of gases generated during the combustion of a substance, weapons based on the acceleration of the striking element by the pressure force of compressed gas, weapons based on electromagnetic acceleration or in weapons based on mechanical acceleration. The invention can be applied in the defense industry and in other areas of delivery of striking, or special elements to the target.
The main tactical and technical characteristics of kinetic weapons - the aiming range, accuracy and accuracy of the battle substantially depend on the gyroscopic stability of the striking element when moving along a ballistic trajectory, which is provided by the axisymmetric rotation of the striking element. The conditions for stabilization of the striking element on a ballistic trajectory (static and dynamic stability, dynamic compliance) are a function of the frequency (angular velocity) of rotation and the speed of movement of the striking element.
From the history of the development of weapons, it is known that the twisting of bullets with screw rifling in the barrels of weapons first appeared at the beginning of the XVI century. Due to the uniform rotation of bullets shot from such trunks, the aiming range and the amplification of the damaging effect of the bullet on the target were significantly increased.
In the future and at present various methods are used and developed to give the striking elements rotational movement around the longitudinal axis with both rifled and smooth-bore weapons.
Known technical solutions for imparting rotation to the damaging elements in rifled trunks mainly consist in changing the nature of the interaction of the accelerating damaging element (bullet, projectile, mine) with the screw cutting of the barrel, which leads to an increase in angular velocity, velocity at the muzzle of the barrel and lower load on the trunk.
A technical solution is known [RF patent No. 2213315, 12.26.2001, F41F 1/00], which consists in the fact that to increase the speed of rotation of the projectile the gun barrel is made with progressive cutting with a stroke length of 25–30 calibers at the entrance to the barrel and 15– 20 gauges at the exit of the barrel.
The disadvantage of the technical solution lies in the complexity of manufacturing helical rifling with a non-constant stroke length.
Another group of well-known technical solutions is to organize the impact of powder gases by creating grooves, channels and special forms of screw cutting.
So we know the technical proposal [RF application No. 20111135991/11, 01/27/2010, F41A 21/18] consisting in the fact that to increase the initial velocity of the bullet and the accuracy of the battle, the air located in the barrel channel in front of the bullet is transferred into the slug space, which is passed between the surface of the leading part of the bullet and the surface of the bore through the grooves, recesses of various shapes. In this case, intermittent grooves are made longitudinal and / or oblique-longitudinal and / or transverse in the fields between the rifling, and / or adjacent to the rifling from the side of the wall, on which the leading part of the bullet has less impact, and / or intersecting rifling, and / or oblique longitudinal grooves are performed on the cuts.
The principal drawback of this technical proposal is the great complexity of manufacturing, the high price not commensurate with the magnitude of the effect achieved.
The fundamental drawback of technical solutions based on the twisting of the striking elements within the threaded part of the barrel is that the striking elements with the same mass, geometric shape, quantity and state of the powder charge and other characteristics, on the muzzle of the barrel, have the same angular velocity . However, there is no technical ability to control this speed.
In smooth-bore weapons, the rotation of shells and bullets is ensured by their design features, consisting in the manufacture of damaging elements in the form of turbines, or located on them turbines, blades of ribs, grooves, channels or other elements and devices. These elements during the movement of the striking element interact with gases in the bore of the barrel, or with the flow of counter air, the resulting torque, untwists the striking element. This aerodynamic unwinding of the damaging element is carried out either when it moves in the bore, or on an external ballistic trajectory, or on an internal ballistic and external ballistic sections of the trajectory. Since the gas-dynamic elements perform symmetrically with respect to the axis of the striking element, then the twisting is carried out axisymmetric.
A technical solution is known [RF patent No. 2163998, 04/05/2000, F42B 007/10, F42B 010/24, F42B 030/02] consisting in the fact that the striking element of the smooth-bore weapon, made in the form of a bullet, is placed in a special device for twisting the bullet the pressure of the powder gases, which is made in the form of a cylindrical container with screw grooves deposited on its outer surface. Gunpowder gases bursting during a shot due to a wad penetrate into the gap between the barrel of the gun and the projectile, enter the grooves and spin the container with the bullet in it. Using the invention allows to increase the accuracy of the battle.
There is also a technical solution [RU patent of the Russian Federation No. 2371664, 03/23/2007, F42B 7/10, F42B 10/28] consisting in the fact that for twisting a bullet designed for firing smooth-bore weapons, it has at least one a pressure chamber and at least two jet nozzles, each of which is in communication with the pressure chamber by one gas pipe. The technical result of the proposed device is to increase the ultimate aiming range of the shot to 100-110 meters.
The following known technical solutions are also devoted to the problem of imparting rotation to the damaging element in the smooth-bore barrel: [RF patent No. 235719, 02.26.2008, F42B 7/10, F42B 30/02], [RF patent No. 2225974, 09/13/2002, F42B 10/28 , F41F 1/00], [DE patent No. 2804311].
A large group of well-known technical solutions consists in twisting the damaging element on the external ballistic section by introducing structural elements. Known technical solutions for hunting smooth-bore weapons, implemented in the form of arrow-turbine and turbine bullets, Yakan, Brenneke, "Ideal", BS, Polev, Mayer’s "double-turbine" bullet, and others are described in [V.P. Kostenko “Bullets for a smooth-bore hunting rifle”, Moscow, Publishing House of the Ruchnykins, 2003].
The listed known technical solutions give rotation of the bullet only behind the muzzle end, i.e. on an externally ballistic trajectory, bullets with swirling devices have poor streamlining, are inhibited by the oncoming air flow, which leads to a drop in speed and, consequently, to a decrease in range. In addition, such bullets are sensitive to minor obstacles.
A technical solution is known for the device according to [GB patent UK N20320790] in accordance with which the striking element of a smoothbore weapon is made in the form of a bullet equipped with a device for twisting the bullet under the influence of powder gases when the projectile leaves the barrel of a small arms. The essence of the device is to use a glass with a seal on its lower part, in helical grooves deposited on the outer side surface of the glass, which are affected by powder gases after the projectile leaves the barrel, which ensures twisting of the glass and the bullet.
The disadvantages of the technical solution are that the torque occurs only briefly, at the moment when the bullet and wad crossed the trunk line and that unwinding occurs on a passive, unstable section of the trajectory.
A known method of imparting rotation of the damaging element [RF patent No. 2225974, 09/13/2002, F42B 10/28, F41F 1/00] equipped with at least one impeller, the blades of which are affected by powder gases, and thereby ensure its rotation around the longitudinal axis.
A technical solution is known [RF patent No. 2357191, 02.26.2008, F42B 7/10, F42B 30/02] consisting in the fact that holes are made in the rear part of the striking element (bullet), which are located at an angle to the longitudinal axis and symmetrically with respect to the transverse axes the damaging element, and on the outer surface of the tail section a recess is made in which the wad container is located. The claimed technical solution provides a high damaging effect due to the rotational movement of the bullet.
A common disadvantage of the known technical solutions using imparting rotation to the damaging elements in a smooth-bore barrel (on an intra-ballistic trajectory) is the instability of the number of revolutions, the decrease in the initial velocity of the damaging element and, accordingly, the firing range, as well as the technical inability to control the twisting process.
In the known technical solution [No. 2262652, 03.10.2005, F42B 30/02, F42B 7/10, F42B 12/56] to impart rotational movement to the bullet and increase the damaging effect, intersecting longitudinal cuts are made in its tail. Additional cylindrical elements are placed in the cutouts, which rotate together with the bullet and are removed from the bullet due to centrifugal force when it leaves the barrel.
A disadvantage of the known technical solution is the low accuracy of the trajectory of the bullet, due to the non-simultaneous release of the bullet from additional elements upon departure from the barrel.
More progressive are the methods of gyroscopic stabilization of the damaging elements in flight, imparting rotation of which around the longitudinal axis is carried out previously, before firing, with special technologies or devices.
Close in technical essence to the claimed invention is an application for a technical solution [RF application 2005111579/02, 04/20/2005, F41A 5/00], which consists in the fact that the barrel, due to interaction through rifling with a moving bullet in it, acquires rotational motion around its longitudinal axis, opposite to the direction of rotation of the bullet. In this case, the barrel makes one full revolution in one cycle and rotates continuously in the same direction when firing a burst.
However, since the angular velocity of the rifled barrel with a rotational degree of freedom and the angular velocity of the bullet are subtracted, this technical solution cannot be implemented by the claimed method. In this case, of course, the claimed increase in the speed of rotation of the bullet does not occur.
The closest in technical essence to the present invention is a technical solution [RF patent No. 2342618, 06/15/2006, F41A 5/06] consisting in the fact that the projectile is placed in a rifled barrel of the gun, made to rotate about its longitudinal axis and equipped with a drive, providing this rotation. The angular velocity of the projectile at the exit from the barrel is the sum of the angular velocities of the barrel and the projectile relative to the barrel, which ensures high gyroscopic stabilization of the projectile and its high flight speed with a relatively low interaction of the projectile with barrel cuts.
The main disadvantages of the technical solution closest in technical essence is the increased complexity of the gun design, which assumes high precision manufacturing of massive elements providing rotational movement without oscillations and beats. The high cost of manufacturing a gun with increased design complexity. The gyroscopic effect of the rotating large mass of the barrel makes it difficult to retarget the gun, and a decrease in the speed of rotation of the barrel to aim at a new target and its subsequent unwinding reduces the rate of fire of the weapon. To unwind a massive barrel with a charge requires large energy costs. Lowering the accuracy of manufacturing a gun will lead to a decrease in accuracy of aiming, increase the accuracy of hitting the target.
The closest technical solution is also characterized by other very significant drawbacks.
The technical result of the present invention in terms of the method is to significantly improve the tactical and technical characteristics of various types and types of kinetic weapons by controlled imparting a predetermined angular speed of rotation to the striking element before firing, providing optimal gyroscopic stability of the striking element and expanding the functionality of the weapon.
The technical result of the present invention in terms of the device is the implementation of the inventive method in a device for controlled imparting rotation speed to the striking element before a shot, a significant improvement in the tactical and technical characteristics of smooth-bore and rifled kinetic weapons and the expansion of their functionality. The aim of the invention is also to significantly reduce the inert mass, which is given rotation, reducing the complexity and cost of manufacturing weapons and the implementation of the claimed technical solution in kinetic weapons using different acceleration energy of the striking element.
The specified technical result in terms of the method is achieved in that the optimal gyroscopic stabilization of the striking element for a specific tactical shooting task (i.e., an ideal ballistic trajectory) is achieved by rotating the chamber, which is capable of axisymmetric controlled rotation, which imparts rotation to the striking element before shot. In accordance with the invention, the chamber should be made as a structural independent element of the weapon with the possibility of axisymmetric rotation.
In accordance with the technical solution, the striking element is placed in the chamber, which is then untwisted to a predetermined rotation speed, and this imparts rotation to the striking element, and then firing. In smooth-bore weapons, the muzzle-damaging element has a rotation speed equal to or close to the rotation speed obtained in the chamber, and in a rifled weapon increased by a rotation speed obtained when passing a rifled barrel.
The striking element can also be placed in an already rotating chamber, while the striking element may have a rotation speed of zero, or a rotation speed close to that of the chamber, acquired in a preliminary unwinding device.
The inventive method significantly improves the tactical and technical characteristics of various types and types of kinetic weapons, and expands their functionality.
It is known that the chamber is designed as a separate structural element of a weapon for reloading. In breech-loading guns, removable chambers (chambers) were used to accelerate reloading. In the revolver, the chamber was placed symmetrically about the axis of the drum, with the possibility of rotation around the axis of the drum. In the above technical solutions, the striking element does not rotate before the shot. New, in accordance with the claimed invention, is the function of controlled axisymmetric rotation of the chamber, and the transmission of this rotation to the damaging element placed in the chamber.
The specified technical result in terms of the device is achieved due to additional structural features (with the main set of features formulated above) consisting in the fact that the chamber is performed as a separate structural element of the weapon with the possibility of controlled axisymmetric rotation.
In accordance with the technical solution, the chamber is positioned and structurally and functionally mate with the barrel and with charging and triggering mechanisms. A cylindrical channel is made along the chamber axis, the chamber is located in bearings.
In accordance with the invention, a drive device is arranged on the chamber, the chamber is rotated either driven by an external motion source, or the chamber is performed as a functional element of a rotational motion source, for example, in the form of an axis of a rotor of an electric motor, or in the form of an axis of a turbine rotor, the rotation of which carry out, or from a source of compressed gas, or powder gases, and the speed of rotation of the chamber and the direction of rotation are set by the control system.
In accordance with the invention, in a kinetic weapon based on the acceleration of an attacking element by the pressure force of powder gases, by the pressure force of a compressed gas, by mechanical and electromagnetic acceleration, a chamber is used, which is used as an independent structural element of a weapon with devices for controlled axisymmetric rotation.
The inventive method and device for its implementation are illustrated by drawings in figures 1, 2, 3, 4, 5.
FIG. 1 - An embodiment of a method and device for imparting rotation to a striking element with a drive, the rotation of the chamber from an external source of movement for firearms;
FIG. 2 - An embodiment of a method and device for imparting rotation to an attacking element with a chamber made in the form of an axis of an electric motor;
FIG. 3 - An embodiment of a method and device for imparting rotation to an attacking element with a chamber made in the form of an axis of a gas turbine driven by an external gas source;
FIG. 4 - An embodiment of a method and device for imparting rotation to an attacking element with a chamber made in the form of an axis of a gas turbine driven by powder gases.
FIG. 5 - Schematic depicts a firearm muzzle-loading weapons, for example, mortar, grenade launcher, etc. with the rotation of the chamber from an external source of motion
In FIG. 1 schematically shows an embodiment of a method and device for imparting rotation to an attacking element / 2 / with a drive / 7 / rotation of a chamber / 1 / from an external source of movement / 8 / for firearms. The housing of the chamber / 1 / is made in the form of a cylinder with a central channel and a groove for accommodating the damaging element / 2 / and charge / 6 / in the cartridge or sleeve. On the outside of the chamber / 1 / there is a drive element / 7 /. The rotation of the chamber is carried out in bearings / 5 /. Bearings / 5 / must ensure the rotation of the chamber without radial and mechanical end movements. As a source of movement / 8 /, an electric motor or other propulsion with the required technical characteristics can be used. The rotation speed of the chamber / 1 / is set by a control system (not shown in the diagram), which should provide regulation of the rotation speed from 0 to hundreds of revolutions per minute, its stabilization and change of direction of rotation.
The chamber / 1 / structurally coaxially mate with a smoothbore weapon or with a rifled barrel / 3 /. From the breech of the chamber / 1 / functionally mate with the charging mechanism / 4 /. The charging mechanism / 4 / combines the functions of charging, shutter, injection and removal of the cartridge (sleeve), automatic reloading and shock mechanism. The charging mechanism / 4 / may also include a device for preliminary promotion of the striking element to a speed close to the angular velocity of the chamber, which provides shock-free supply of the striking element and an increase in rate of fire (frequency of shots).
FIG. 2 shows a technical solution for the case of the execution of the chamber / 1 / in the form of an axis of the electric motor. The core and the rotor winding / 9 / of the electric motor, as well as the voltage supply element to the rotor, the collector / 10 / are placed on the chamber housing / 1 /. The rotation of the rotor chamber is carried out in bearings / 5 / installed in the stator of the electric motor. The stator, motor housing and control system are not shown in the diagram. The control system provides speed control, their stability and a change in direction of rotation. An example is given for a collector motor. In practice, the type and design of the electric motor is selected from a wide range of technical characteristics, such as power, dimensions, weight, type and magnitude of the supply voltage, rotor speed, method of regulation and speed stability, etc.
In FIG. 3 chamber / 1 /, made in the form of an axis of a gas turbine driven by an external gas source. On the chamber / 1 / place the turbine blades, forming the rotor of the gas turbine / 11 /. The rotor - chamber is installed in bearings / 5 / located in the turbine housing / 12 /. Gas from the gas source enters through the gas inlet pipe / 13 /, and exits through the gas outlet system / 14 /. The gas source, the piping system and the gas flow control system and, accordingly, the turbine rotation speed are not shown in the diagram. The gas flow control system should provide speed control and rotation speed stability.
An embodiment of a chamber made in the form of an axis of a gas turbine driven by powder gases is shown schematically in FIG. 4. The general scheme of this option is close to the technical expansion of the turbine driven by an external gas source. The difference lies in the use of the unwinding of the turbine / 11 / powder gases, which come from the barrel / 4 / through the channel and the nozzle of the powder gases / 15 /. To compensate for mechanical vibrations arising during the shot, the nozzle of the powder gases is movable. Since the pressure of the powder gases strongly depends on the frequency of the shots, regulation of stabilization of the angular velocity of the rotor requires a precision control system. Without a complex control system, the implementation of this technical solution is permissible in weapons that allow low performance requirements.
An example of the execution of the chamber / 1 / firearms with charging from the muzzle end driven by an external source of movement, for example, for a mortar, is shown in FIG. 5. The chamber / 1 / is mounted inside the lower part of the weapon (mortar) barrel / 3 /. The rotation of the chamber in the bearings / 5 / is carried out by an external source of movement / 8 / by means of a drive / 7 /. The striking element (mine) / 2 / is placed through the barrel / 3 / in the chamber / 1 / chamber / 1 / and the striking element (mine) / 2 / placed in it are untwisted to a predetermined rotation speed and the trigger / 16 / fires a command . In frequency shooting, the damaging element / 2 / is placed in a rotating barrel / 3 /.
Referring to the drawings of FIG. 1 to FIG. 5 embodiments of the method and device for imparting rotation to the striking element are examples of part of possible technical solutions for the implementation of device for imparting rotation.
Specialists in the art will find many other possible technical solutions of devices for imparting rotation, which can be used for purposes and in the framework of the present invention.
The use of the claimed group of inventions can improve the efficiency of the method of imparting rotation to the striking element before a shot, make it controllable, provide the possibility of implementing this method with various types of devices and implement the method in various types and types of kinetic weapons. At the same time, the tactical and technical characteristics are significantly improved such as: the given rotation speed of the striking element, the initial speed of the striking element, range, sighting range, accuracy of battle, and others.
The implementation of the invention in smooth-bore kinetic weapons will achieve higher TTX values than in modern rifled weapons:
- high aiming range - due to intra-ballistic gas-dynamic stabilization, high gyroscopic stabilization on the trajectory of external ballistics, low level of mechanical vibrations of the barrel, due to mechanical isolation of the barrel and the chamber and a higher speed of the damaging element due to low mechanical losses in the barrel;
- increased firing range - due to optimization of the gyroscopic stability factor, direction of rotation and a higher initial velocity of the striking element;
- increase the accuracy of the battle at all distances - due to the optimization of the gyroscopic stability factor, direction of rotation;
- strengthening the damaging effect of the striking element on the target due to the higher speed of the striking element and the kinetic energy of movement and rotation of the striking element;
- aiming at a low speed of the striking element due to the high gyroscopic stabilization;
- the ability to fire striking elements (cumulative, special, missiles) with zero angular velocity;
- the ability to set the initial rotation speed from 0 to tens of thousands of revolutions per minute;
- the ability to set the reverse direction of rotation;
- the possibility of increasing the area of damage by changing the initial rotation speed of the striking element.
The implementation of the invention in kinetic weapons with a rifled barrel will increase the performance characteristics of rifled weapons:
- increase the accuracy of the battle at all distances - due to the optimization of the gyroscopic stability factor;
- increase in aiming range - optimization of gyroscopic stabilization on the trajectory of external ballistics, reduction of the level of mechanical vibrations of the barrel by decoupling;
- the possibility of hitting the target at a low speed of the striking element due to the high gyroscopic stabilization;
- the ability to set the initial rotation speed from hundreds to tens of thousands of revolutions per minute;
- less wear on the bore due to the increase in the pitch of the barrel, and, accordingly, reduce the mechanical impact on the barrel.
In accordance with the invention, the use of the proposed method and device for imparting rotation to the striking element in various types of kinetic weapons with various methods of accelerating the striking elements (energy of powder gases, compressed gas, mechanical, electromagnetic acceleration, etc.) allows you to create new types of kinetic weapons of various types (machine guns , small arms, mortars, grenade launchers, guns) with high tactical and technical characteristics.
A comparative analysis of the proposed technical solutions with identified analogues of the prior art clearly shows that the main features of the proposed inventions (giving rotation to the damaging element by rotating the chamber, the chamber as a structural element of the weapon, the possibility of axisymmetric rotation of the chamber, the rotation of the chamber by the source of movement, the design of the chamber, the use of technical solutions for various types of weapons by purpose and method of acceleration and other signs) They essentially differ from the features of known analog technical solutions, that is, they satisfy the requirement of novelty. Accordingly, we can conclude that the group of inventions meets the criteria of patentability.
The group of proposed inventions for a method, device, structural and object implementation of the device is aimed at obtaining a common technical result - a significant improvement in the tactical and technical characteristics of various types and types of kinetic weapons by controlled imparting a predetermined rotation speed to the striking element before the shot, which provides optimal gyroscopic stability of the striking item. This group of proposed inventions also combines the main features - giving rotation to the striking element by rotating the chamber, the chamber as a structural element of the weapon, the possibility of axisymmetric rotation of the chamber, the rotation of the chamber by the source of movement, the structural design of the chamber, the use of technical solutions for various types of weapons according to the purpose and method of acceleration and other signs. The group of inventions has common goals, a common inventive concept and common basic features, which indicates the unity of the group of inventions.
Technical solutions with the essential features given in the characterizing part of the claims from available sources are not known to the author.

Claims (3)

1. The method of imparting rotation to the striking element before a shot, characterized in that the rotational movement of the striking element is imparted by rotating the chamber, which is designed as an independent structural element of the weapon with the possibility of axisymmetric controlled rotation.
2. The chamber for use in the method of imparting rotation to the damaging element according to claim 1, characterized in that the chamber is performed by a structural element of the weapon, which are structurally positioned and functionally mate with the barrel and with charging and triggering mechanisms, a cylindrical channel is made along the chamber axis, the chamber is located in bearings, on the chamber there is a device for the drive, the chamber is rotated either by a drive from an external source of movement, or the chamber is performed as a functional element ie a source of rotational motion, such as an electric motor or rotor axis as the turbine rotor axis, which rotation is carried out or from the compressed gas source, or powder gases, and at the same rotational speed and direction of rotation of the chamber define a control system.
3. Kinetic weapons: firearms, pneumatic, mechanical or electromagnetic, characterized in that it uses a chamber, designed as an independent structural element of the weapon with the possibility of axisymmetric controlled rotation, to give rotation to the attacking element before firing.
RU2015106554A 2015-02-26 2015-02-26 Method and device for giving the rotation to the destructive element RU2669233C2 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3503300A (en) * 1967-09-01 1970-03-31 Trw Inc High firing rate hypervelocity gun and ammunition therefor
RU2064152C1 (en) * 1992-05-25 1996-07-20 Дмитрий Владимирович Андреев Automatic small arms
RU2284441C2 (en) * 2004-11-24 2006-09-27 Владимир Викторович Рябов Combination rifle
RU2516949C1 (en) * 2012-09-28 2014-05-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Омский государственный технический университет" Method of charge gas dynamic centring and device to this end

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3503300A (en) * 1967-09-01 1970-03-31 Trw Inc High firing rate hypervelocity gun and ammunition therefor
RU2064152C1 (en) * 1992-05-25 1996-07-20 Дмитрий Владимирович Андреев Automatic small arms
RU2284441C2 (en) * 2004-11-24 2006-09-27 Владимир Викторович Рябов Combination rifle
RU2516949C1 (en) * 2012-09-28 2014-05-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Омский государственный технический университет" Method of charge gas dynamic centring and device to this end

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