RU2499748C1 - Electromechanical accelerator of shells - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: electromechanical accelerator comprises drive with motor and tractive element, clutch and guide. Clutch is rigidly secured at tractive element. Endless tractive element runs around drive and tensioner wheels. Clutch is composed of a rod fitted through the sleeve to shift axially therein. Said rod interacts with the shell central bore. Said shell represents a solid of revolution. Said motor represents a rotor-type motor.

EFFECT: higher efficiency of accelerator, stable flight of shell.

9 cl, 1 dwg

Description

FIELD OF THE INVENTION

The invention relates to throwing devices and can be used, for example, in the military sphere, in particular as a throwing weapon, or for laboratory research of the characteristics of a material under impact.

State of the art

A well-known analogue is a firearm [Beetle LB Weapon. Revolvers, pistols, rifles, submachine guns, assault rifles / Military Publishing: 1992, p. 735], the main disadvantage of which is the restriction of the speed of the projectile released by the rate of reaction during ignition of the powder charge and the velocity of the powder gases in the barrel. The principle of operation of the automation of single-barrel firearms does not allow for ultra-high rate of fire.

A device of a multi-stage electromagnetic accelerator is known [Patent RU No. 2331033, IPC: F41B 6/00, publ. 08/10/2008, bull. No. 22], in which electromagnetic energy is used to disperse the warhead.

The disadvantage of a multi-stage electromagnetic accelerator is that the higher the velocity of the projectile, the faster the traction coils need to be switched, and the self-emf of the coil tends to maintain the current flowing in the coil when the power is turned off, thereby preventing it from being switched off. As a result of high losses on magnetization reversal and in the air gap between the projectile and the barrel, the installation has low efficiency.

A device of an electromagnetic accelerator with rotation of the projectile is known [Patent RU No. 2258885, IPC: F41B 6/00, publ. 08/20/2005. bull. No. 23], containing a threaded barrel of non-magnetic material. As a result of the longitudinal movement of the projectile in the rifled barrel, it is informed of the stabilizing rotation around the axis of the projectile, however, due to the operation of the sliding friction forces, the installation efficiency becomes even less, and the barrel wear increases.

As the closest analogue to the claimed technical solution adopted electromagnetic catapult [Patent RU No. 2291816, IPC: B64F 1/00, B64F 1/06, publ. 01/20/2007, bull. No. 2], consisting of inductive coils of the solenoid type, worn on a pipe made of diamagnetic material, inside which an iron core freely moves, to which a cable is fixed, and a ring is attached to the plane’s hook on the other end of the cable to take it off from the deck of an aircraft carrier.

The disadvantage of this design is the low efficiency of the electromagnetic drive of the type used. This catapult design is designed for periodic action, and after each start, the kinetic energy of the core is extinguished in the braking devices and is not used for the next start.

Disclosure of invention

The claimed invention solves the problem of creating a propelling device of continuous operation with increased efficiency and stability of the projectile by giving it translational and rotational motion, and the energy of powder gases is not used to throw the projectile.

The problem is solved in that in an electromechanical shell accelerator comprising a drive with an electric motor and a traction element, the clutch is rigidly fixed to the traction element and the guide, according to the claimed invention, the traction element is continuous, enveloping the drive and tension wheels, the clutch is made in the form of a the possibility of axial movement of the rod interacting with the Central hole of the projectile, made in the form of a body of revolution. Moreover, to rotate the traction wheel, a rotary electric motor is used.

Since the efficiency of a rotary electric motor is always higher than that of a linear one, this will limit itself to low currents in the conductors, reduce heat losses, simplify the power supply system and reduce the overall dimensions of the motor.

As a traction element can be used a chain or belt, working in tandem with two sprockets or pulleys, respectively.

The clutch provides a temporary connection between the washer and the drive, dragging along the projectile along the guide. The projectile rolls with an outer diameter along the guide, and rotational motion around its own axis is informed, and the rolling friction is impeded by rolling friction, unlike firearms, where the friction is prevented by sliding friction.

To ensure a high initial velocity of the projectile, the drive and idler must rotate at a high angular velocity. This will lead to the appearance of significant gyroscopic forces, which will give stability to the propelling system as a whole and increase the accuracy of the battle. After coupling the drive with the washer, the impulse of the impact interaction will be much weaker than the recoil during the firing of a firearm, since there is no need to dampen the impulse from the moving parts of the mechanics of the weapon and powder gases, and the accumulated kinetic energy in the rotating parts of the drive is used to disperse the following shells.

The proposed design allows you to change the rate of throwing a series of shells.

For continuous power supply of the installation with shells, a magazine with a clamping device is provided in the design.

The proposed design does not exclude the use of a different type of engine, such as a turbine, with suitable characteristics.

The implementation of the invention

The proposed device is presented in the drawing, which shows the layout of the device in isometry.

The electromechanical shell accelerator consists of a guide 1 along which the projectile (washer) 2 moves, the rest of the shells are in the magazine 3. The clutch, consisting of a rod 4 and a sleeve 5, provides a mechanical connection between the traction element (chain) 6 and the projectile 2. Traction element 6 pulled between two (chain) wheels 7.

Electromechanical shell accelerator operates as follows. The drive, consisting of an engine (not shown) and two (chain) wheels with a pulling element (chain) stretched between them, is untwisted to the calculated speed. To do this, a rotary electric motor or other drive, such as a turbine, spins the drive wheels 7, together with them comes the traction element 6 with a clutch fixed to it, which consists of a rod 4 in the sleeve 5 and a linear rod drive (not shown). At the stage of acceleration, the rod 4 is pulled into the sleeve 5, so that it cannot be in contact with the projectile 2. The projectile 2 is mounted on the guide 1 from the magazine 3.

After reaching the calculated speed of rotation, at which the speed of the traction element 6 in the straight section between the wheels 7 will be sufficient for throwing shells (washers) 2, the rod 4 is extended from the sleeve 5 by a linear drive. In the extended position, the rod 4 interacts with the projectile 2 and carries it along the guide 1. In this case, the projectile 2 rolls along the contact surface of the guide 1 and untwists about its own axis. After passing the straight section, the rod 4 is pulled into the sleeve 5, freeing the projectile 2. As a result, the projectile is informed of the speed along the guide 1 and the torque along its own axis.

The next projectile is installed on the guide 1 from the magazine 3 with a pressing device (not shown). The clutch continues to move along the trajectory of the traction element 6. At the moment when the clutch is opposite the next projectile, the rod 4 is pulled out of the sleeve 5 and the process is repeated.

The oscillation frequency of the rod 4 in the sleeve 5 determines the rate of throwing installation in the production of a series of shots.

Claims (9)

1. Electromechanical shell accelerator comprising a drive with an electric motor and a traction element, a clutch rigidly mounted on the traction element, and a guide, characterized in that the traction element is continuous, enveloping the drive and idler wheels, the clutch is made in the form of an axial axle passed through the sleeve moving the rod interacting with the Central hole of the projectile, made in the form of a body of revolution, and the electric motor is made rotary. 2. The accelerator according to claim 1, characterized in that it is equipped with a magazine for continuous supply of shells. 3. The accelerator according to claim 2, characterized in that the store is equipped with a clamping mechanism preloaded shells. 4. The accelerator according to claim 1, characterized in that the projectile can be made in the form of a washer. 5. The accelerator according to claim 1, characterized in that the projectile can be made in the form of a ring. 6. The accelerator according to claim 1, characterized in that the projectile can be made in the form of a disk. 7. The accelerator according to claim 1, characterized in that the drive is based on a chain and two sprockets. 8. The accelerator according to claim 1, characterized in that the drive is based on a belt and two pulleys. 9. The accelerator according to claim 1, characterized in that the drive is based on a cable and two pulleys.