RU2717857C1 - Driving device of finned armor-piercing-subcaliber projectile - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: invention relates to the field of artillery equipment and can be used as a master device of a finned armor-piercing-subcaliber projectile for tank and anti-tank guns. Leader of finned armor-piercing-subcaliber projectile comprises support assembly made of two parts secured with possibility of separation by means of cut elements. One part is made in the form of a stabilizer consisting of a pair of rings coaxially separated from the shell and connected by stiffness ribs. Second one is in form of a cover with a bottom to be separated from the barrel.

EFFECT: disclosed design of the driving device enables to increase armor penetration by increasing the relative elongation of the active part of the armor-piercing-subcaliber projectile and providing the required value of its flexural rigidity, as well as by using kinetic energy of the passive part mass at the initial stage of armor penetration with provision of stability on the flight trajectory due to application of the part of the support unit of the driving device which is not separated on the trajectory.

4 cl, 4 dwg

Description

The invention relates to the field of artillery technology and can be used as a host device feathered armor-piercing projectile for tank and anti-tank guns.

The active part of the armor-piercing-sub-caliber projectile has a high approach kinetic energy, high approach speed, a short approach time, and low sensitivity to the effects of active protection. At the same time, the cost of ammunition is relatively low. The smaller the diameter of the active part and, as a result, the greater its relative elongation, the greater the specific kinetic energy in the process of penetration and the greater the armor penetration. However, the relative lengthening of the active part is limited from above by the possibility of its loss of longitudinal stability at the initial stage of armor penetration, which is a significant drawback of this type of ammunition.

The host device of the armor-piercing-sub-caliber projectile is its passive part, designed to disperse the projectile in the barrel channel, and after the projectile leaves the barrel channel, the passive part is separated from the active.

This, on the one hand, improves the aerodynamic characteristics of the active part, which positively affects the value of its approach kinetic energy, and on the other hand, does not affect its mass, since the mass of the passive part does not participate in armor penetration and does not increase the approach kinetic energy. In addition, the passive part of the projectile in this form does not affect the bending stiffness of the active part at the initial stage of armor penetration.

A known design of the host device for armor-piercing projectile [RF Patent No. 225509 "Master device with gas aerodynamic configuration"]. The device contains supporting ring sectors with a front full-sized and reduced bottom cavities with aerodynamic plates installed in them, placed perpendicular to the axis of symmetry of the projectile and having calibrated oval-shaped holes on the right and left, while the supporting rings of the sector are arranged to separate them. The synchronism of separation of the support ring sectors is ensured by the equality of the moments overturning the support ring sector.

The disadvantage of this technical solution is the design of the detachable passive part of the armor-piercing-projectile projectile, which reduces the bending stiffness of the active part at the initial stage of armor penetration and limits its maximum allowable elongation due to the possibility of losing longitudinal stability during penetration. In this case, the kinetic energy of the mass of the passive part is not used as an additional factor affecting the penetration.

An object of the invention is to increase armor penetration due to the possibility of increasing the relative elongation of the active part of the armor-piercing-projectile shell and ensuring its bending stiffness, as well as through the use of kinetic energy of the mass of the passive part at the initial stage of armor penetration with stability on the flight path due to the use of inseparable on the path of a part of the master device.

The technical problem is solved by the fact that the leading device of the feathered armor-piercing-projectile projectile is made in the form of a support unit consisting of two parts fastened with the possibility of separation by means of cut elements, one of which is made in the form of a stabilizer, consisting of a pair of rings coaxially located inseparable from the projectile connected by stiffeners, and the second - in the form of a shell with a bottom detachable after departure from the trunk.

The shell may be provided with a labyrinth seal.

Stiffeners can be equally spaced around in a plan.

The ribs can be made with radial recesses on the outer surface between the coaxial pairs of rings.

The invention is illustrated by drawings, where

in FIG. 1 shows a General view of the host device for the feathered armor-piercing projectile;

in FIG. 2 is a section AA of FIG. 1;

in FIG. 3 is a section BB of FIG. 1;

in FIG. 4 is a section BB of FIG. 1.

The leading device of the feathered armor-piercing-projectile projectile contains a support unit made in the form of a stabilizer, consisting of pairs of rings 1, 2 coaxially located inseparable from the projectile, connected by stiffeners 3, and a shell with a bottom 4 fastened to the stabilizer by means of shear elements 5, for example , pins, and mounted on a stabilizer with the possibility of its separation. In this case, the support unit provides additional centering of the projectile when moving along the bore, as well as stability on the trajectory. To reduce weight and improve aerodynamic characteristics, the elements of the support node are made thin-walled. In this case, the stiffening ribs 3 are arranged uniformly around the circumference in plan and are made with radial recesses along the outer surface between the rings.

To ensure strength during firing, the shell with the bottom 4 is placed on a mandrel made in the form of coaxial rings 6 connected by stiffeners 7. At the same time, a labyrinth seal 8 is made on the outer cylindrical surface of the shell with the bottom 4.

The stabilizer is fixedly mounted on the active part of the projectile mainly by welding.

The proposed device works as follows.

When fired in the bore, the pressure of the powder gases acts on the shell with the bottom 4, creating a driving force. The labyrinth seal 8, made on the outer cylindrical surface of the shell with the bottom 4, prevents the flow of powder gases into the stabilizer zone. When this mandrel, made in the form of coaxial rings 6 connected by stiffeners 7, prevents the occurrence of deformations of the shell with the bottom 4.

When the projectile leaves the bore channel under the influence of a force created by an incoming air stream that flows almost unhindered through the thin-walled elements of the stabilizer, consisting of coaxially located pairs of rings 1, 2 that are not separated from the active part and connected by stiffeners 3, (and) acting on the bottom of the shell with bottom 4, the sheared elements 5 (for example, pins) are destroyed, by means of which the shell with the bottom 4 is fixed on the stabilizer. In this case, the shell with the bottom 4 is separated from the stabilizer without creating an additional asymmetric disturbing effect on the projectile. The mandrel is also detached from the active part of the projectile.

Then the projectile, while maintaining stability on the trajectory due to the stabilizer, motionlessly mounted on the projectile, reaches the target and is embedded in the armor. Due to the fact that the stabilizer of the support unit cannot be separated from the projectile, it is thin-walled and has a small midship area, the incoming air flow flows through it without creating additional resistance, which preserves the aerodynamics of the projectile. At the initial stage of armor penetration, the host device reports additional kinetic energy of the active part of the projectile and increases its bending stiffness, which together increases the parameters of armor penetration.

Due to the presence of a part of the support assembly, which is maintained on the trajectory, the armor-piercing-sub-caliber projectile does not lose stability when it comes into contact with the armor even at large elongations. Thus, it is possible to use shells with a large elongation of more than 30 units.

Thus, the proposed design of the host device allows to increase the armor penetration due to the possibility of increasing the relative elongation of the active part of the armor-piercing-subcaliber projectile and ensuring the necessary value of its bending stiffness, as well as by using the kinetic energy of the mass of the passive part at the initial stage of armor penetration with stability on the flight path due to the use of a part of the support unit of the master device that cannot be separated on the path.

Claims (4)

1. The leading device feathered podkalibernogo projectile containing a support unit, characterized in that the support unit consists of two parts, fastened with the possibility of separation using shear elements, one of which is made in the form of a stabilizer, consisting of a pair of rings coaxially located inseparable from the projectile, connected by stiffeners, and the second - in the form of a shell with a bottom detachable after departure from the trunk. 2. The host device according to claim 1, characterized in that the outer surface of the shell is equipped with a labyrinth seal. 3. The master device according to claim 1, characterized in that the stiffeners are equally spaced circumferentially in plan. 4. The host device according to claim 1, characterized in that the stiffeners are made with radial recesses on the outer surface between the coaxial pairs of rings.

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