RU2251070C2 - Sub-caliber round - Google Patents

Abstract

FIELD: rocket technique and may be used in the design of sub-caliber rounds for increasing their combat effectiveness.

SUBSTANCE: Round has a body, in which there is a sub-caliber shell with a detachable sabot. The sabot has a centering unit in the forward part of the sub-caliber shell in the shape of disintegrating segments and a propellant charge. The sabot is made in the form of a body which is provided with a cavity communicable with bottom part of the round's body at that the sabot is telescopically connected with the rear part of the sub-caliber shell and the propellant charge is located in the cavity of the sabot.

EFFECT: increases combat effectiveness due to increasing initial speed, decreasing initial dispersion, decreasing barrel's dimensions and mass.

3 dwg

Description

The present invention relates to the field of rocketry and can be used in the construction of sub-caliber shots to increase their combat effectiveness.

A known mechanism for firing a sub-caliber projectile [1], comprising a pallet with a master device in the form of pads pivotally mounted to the pallet and revealing a free flow of air when exiting the barrel.

The disadvantage of this device is that the opening of the pads of the host device occurs at the moment the projectile leaves the barrel, when the gas is exposed to the projectile flowing from the barrel (aftereffect), which gives the shell lateral disturbances and increases dispersion, because there is no kinematic connection between the blocks and their disclosure cannot be symmetrical, and the resultant force of the gas pressure during the aftereffect, for various reasons, also has an eccentricity with respect to the direction of projectile movement. In addition, the acceleration of the projectile is carried out only when it moves along the bore, and the velocity of the projectile depends on the length of the barrel and pressure in it. The increase in barrel length and pressure in it leads to an increase in barrel oscillations and a greater initial dispersion of the projectile, which reduces firing accuracy.

Known sub-caliber shot [2], which is the prototype of the present invention, comprising a housing in which a sub-caliber projectile is located with a detachable tray consisting of disintegrating segments, and a propelling charge.

When the projectile leaves the barrel, the pallet breaks up into parts, which reduces its force effect on the sub-caliber projectile, and the effect of gases flowing from the barrel on the projectile having a small caliber is reduced.

The disadvantage of this device is the limited combat effectiveness, due to the fact that the acceleration of the sub-caliber projectile can be carried out only in the barrel, and the increase in the velocity of the projectile can be achieved only by increasing the length of the barrel and pressure in it, which increases the barrel’s vibrations during firing and, accordingly, the initial dispersion. In addition, the dimensions and weight of the barrel are growing, which limits the possibility of using this system.

The objective of the invention is to increase combat effectiveness by increasing the initial speed, reducing the dimensions and mass of the barrel, reducing the initial dispersion.

To achieve this goal in a known sub-caliber shot containing a housing in which a sub-caliber projectile is located with a detachable pallet containing a centering unit in front of the sub-caliber projectile in the form of disintegrating segments and a propelling charge, the pallet is made in the form of a housing provided with a cavity communicating with the bottom body shot, while the pan is telescopically connected to the rear of the projectile, and the propellant is placed in the cavity of the pan.

The essence of the invention lies in the fact that this design of the sub-caliber shot provides an increase in combat effectiveness by increasing the initial speed and reducing the initial dispersion without increasing the dimensions and mass of the barrel.

Comparison of the claimed technical solution with the prototype made it possible to establish its compliance with the criterion of "novelty." When studying other well-known technical solutions in this technical field, the signs that distinguish the claimed solution from the prototype were not

identified, and therefore they provide the claimed technical solution according to the criterion of "inventive step".

The proposed solution is illustrated by drawings, which show:

- figure 1 is a General view of the described device shot in the prelaunch position;

- figure 2 - the position of the elements of the shot at the time of the exit of the projectile from the body of the shot;

- figure 3 is the moment of separation of the pallet.

The proposed sub-caliber shot contains a housing 1 (Fig. 1), in which a sub-caliber projectile 2 and a pallet are placed, consisting of a centering unit 3 in the form of segments decaying in flight and a housing 4 with a cavity 5 communicating with the bottom 6 of the housing 1. The housing 4 of the pallet connected to the projectile by a telescopic joint 7, a propellant charge 8 is placed in the cavity 5.

The operation of the device is as follows.

When starting, the caliber projectile 2 moves along the tube of the housing 1 together with the centering assembly 3, the housing of the pallet 4 and the propelling charge 8. When the segments of the centering assembly 3 exit beyond the front end of the housing 1 (Fig. 2), they are scattered to the sides by an incoming air stream. With further movement after departure from the pipe of the casing 1 of the sub-caliber projectile 2 with the casing 4 of the pallet, the latter is the aerodynamic stabilizer of the projectile 2. Moreover, the charge 8 can be selected so that part of it burns in the cavity of the casing 1 when the projectile moves, and the remaining part creates a longitudinal thrust due to the outflow of gases from the bottom of the pallet body, which gives the projectile 2 additional acceleration and aerodynamic stability, because the pallet body, held on the tail of the projectile 2 by a draft of charge and having a large cross-sectional area as compared to the projectile, is an effective aerodynamic stabilizer.

After the charge burns out, the thrust drops and the pallet body is dropped from the projectile by an incoming air stream.

Thus, in the proposed technical solution, in comparison with the prototype, the combat effectiveness is increased by increasing the initial velocity of the sub-caliber projectile, since its acceleration is carried out both in the pipe and after exiting it, as well as reducing the initial dispersion, since the body of the pallet after exiting the pipe acts as an aerodynamic stabilizer of the projectile.

In this case, the shell of the shot can be performed with minimal dimensions and weight, because the device provides acceleration of the projectile after exiting the hull, which allows to reduce the pressure in the tube of the shot body and its length.

Sources of information

1. Application of France No. 2445509, publ. 08/29/80, F 42 B 13/00 - analogue.

2. UK application No. 2123121, publ. 01/25/84, F 42 B 13/16 - prototype.

Claims (1)

A sub-caliber shot containing a body in which a sub-caliber projectile is located with a detachable pallet containing a centering unit in front of the caliber projectile in the form of disintegrating segments, and a propelling charge, characterized in that the pallet is made in the form of a body provided with a cavity communicating with the bottom of the body shots, while the pan is telescopically connected to the rear of the projectile, and the propellant is placed in the cavity of the pan.

Images