RU2326337C2 - Projectile for smooth bore weapons - Google Patents

Abstract

FIELD: ammunition.

SUBSTANCE: projectile comprising a cylindrical main body whereon an obturating device is arranged having the form of circular slots and flexible circular crests inclined towards the stream of powder gases.

EFFECT: enhancing the obturation of powder gases, decreasing the bore wear, increasing the projectile muzzle velocity, improving the accuracy of fire.

2 dwg

Description

The invention relates to the design of ammunition, in particular to shells for smooth-bore weapons.

The well-known design of the barrel and bullet Gerlich, sample 1938 (see the magazine "Weapon", Moscow, N2, 1999, p. 43). The design contains a barrel, a cylindrical leading part of the bullet, wrinkled belts.

The disadvantages of the known design are: the presence of hard crushable leading bullet belts that increase the wear of the surface of the barrel; instability of movement of the bullet along the cylindrical part of the barrel, because the direction of movement is carried out by crumpled belts; the difficulty of manufacturing the conical part of the barrel; high accuracy of barrel manufacturing, since in the presence of irregularities in the surface of the barrel bore, the outflow of powder gases occurs in the gap formed between the outer surface of the crumpled belts and the surface of the barrel bore; production of trunks of stainless steel to increase their wear resistance; high accuracy of bullet manufacturing to ensure uniform movement of the bullet in the barrel bore from shot to shot.

The closest analogue of the claimed invention is a projectile for smooth-bore weapons, containing a cylindrical leading part, on which is placed an obturation device containing a base and a part protruding beyond the caliber of the projectile with a conical front section and an annular recess behind the apex of the girdle (see RU 2110758 C1, publ. 1998 g.).

The proposed invention solves the problem of improving the reliability of the functioning of the weapon, reducing the fire flame, increasing the tactical and technical characteristics of the weapon (reducing the variation in the values of the initial velocity of the projectile, increasing the accuracy of fire).

The technical result obtained by carrying out the invention consists in improving the obturation of powder gases (in the direction of projectile movement), reducing the wear of the bore, increasing the initial speed, no impact on recoil, increasing firing accuracy, the possibility of using the projectile in muzzle-loaded weapons .

The specified technical result is achieved in that the projectile for smooth-bore weapons contains a cylindrical leading part, on which is placed an obturating device made in the form of annular grooves and elastic annular scallops, inclined towards the flow of powder gases.

The placement on the cylindrical leading part of the projectile obturating device, made in the form of annular grooves and elastic annular scallops, tilted towards the flow of powder gases, can improve the obturation of powder gases in the direction of movement of the projectile.

In the present invention, the gap between the outer surface of the projectile and the surface of the bore of the barrel occurs due to the stretching of the obturating element of the projectile (elastic combs) under the influence of powder gases. Stretching of the obturating element of the projectile occurs until the outer surface of the obturating element comes into contact with the surface of the barrel channel.

As a result, the invention:

- provides a minimum and sufficient contact area of the outer surface of the obturating element with the surface of the bore, which reduces wear on the bore and increases the initial velocity of the projectile,

- does not affect the return and accuracy of shooting due to the absence of the moment of squeezing of the obturating element by the bore,

- makes it possible to use a shell in samples of weapons loaded from the muzzle side, for example mortars.

Technical solutions with features distinguishing the claimed solution from the prototype are not known and do not follow explicitly from the prior art. This suggests that the claimed solution is new and has an inventive step.

The invention is illustrated by drawings, where in Fig.1 is the position of the projectile in the chamber of the barrel before the impact mechanism; in Fig.2 - node I in Fig. one.

The device comprises a projectile 1 having a cylindrical leading part, on which a blocking device is placed, made in the form of annular grooves 2 and elastic annular scallops 3, inclined towards the flow of powder gases. The projectile is attached to the sleeve 4 through the chamber 5. The sleeve 4 is held in the barrel 6 by a bolt 7.

The device operates as follows.

When fired, powder gases flow out of the chamber 5 and act on the elastic combs 3, subjecting them to elastic deformation. The elastic deformation of the combs 3 allows you to choose the gap "A" between the surface of the leading part of the projectile 1 and the surface of the barrel 6 along the entire length of the barrel.

The design of the projectile with elastic obturation scallops was used in the munitions of IG-50, FG-50, ST-50 for the RGS-50M grenade launcher. Test results confirm the effectiveness of the new device.

Claims (1)

A projectile for a smooth-bore weapon containing a cylindrical leading part on which an obturating device is located, characterized in that the obturating device is made in the form of annular grooves and elastic annular scallops, inclined towards the flow of powder gases.

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