RU210264U1 - sub-caliber bullet - Google Patents

Abstract

The bullet consists of a head striking part of various configurations, a tail stabilizing part in the form of a teardrop-shaped stepped body, a pulling four-section container that follows the contours of a bullet with a shank, and a pushing obturator pan. In the sub-caliber bullet, thanks to the shank, a streamlined aerodynamic drop-shaped bullet body shape is formed. The blades of the stabilizer on the shank have an angle of inclination from 0° to 5° to the longitudinal axis of the bullet. The leading edges of the stabilizer blades have a bevel angle of 0° to 20°. Along the peripheral surface of the four-section pull container, ribs are located at an angle of 6-8° to the longitudinal axis of the container, the longitudinal ribs on the container have a height of 0.1-0.2 mm along the entire peripheral circumference, a cone ejector is located in front of the tail stabilizer.

Description

The utility model relates to hunting ammunition, namely to bullet cartridges with sub-caliber bullets intended for use in smooth-bore hunting rifles with any muzzle narrowing of the barrel. The closest in technical essence to the claimed sub-caliber bullet is the Sauvestre bullet engineer Jean-Claude Sauvestre.

The utility model is illustrated by drawings:

In FIG. 1 shows a standard striking part of a bullet with a hemispherical nose fairing.

In FIG. 2 shows the striking part of the bullet with an expansive recess in the nose of the fairing.

In FIG. 3 shows the striking part of a bullet with an aerodynamic needle.

In FIG. 4 shows the shank of the bullet.

In FIG. 5 shows a 3D model of the bullet shank.

In FIG. 6 shows a 3D model of one section of a 4-section container.

In FIG. 7 shows 2 sections of a 4-section container assembly.

In FIG. 8 shows a 3D model of a 4-section container assembly.

In FIG. 9 shows the layout of the bullet in the cartridge.

A bullet consisting of a head striking part made of a hard lead alloy or turned metal (Fig. 1-3), a tail stabilizing part (Fig. 4) made of plastic in the form of a tapering cylindrical-stepped rod (10) with a cone ejector (11) and a cruciform stabilizer at the end (12) of a pulling four-section detachable container made in the form of four sectoral detachable half-containers of a pulling type made of polymer materials, covering the head and tail stabilizing parts of the bullet, and the separating half-containers with their inner surfaces repeat the contours of the body of the bullet from the base a hemispherical fairing to a cone ejector (Fig. 6, 7), on the peripheral surface of the separating container there are ribs installed at an angle to the longitudinal axis of the separating container. One semi-container has a size. equal to 1/4 of the diameter of the bore. There is also a pushing wad obturator (13) (Fig. 9).

Wherein

the full length of the bullet is 3.6-4 diameters of the cylindrical section of the head of the bullet body;

the maximum diameter of the head part is 0.65-0.78 of the bore diameter;

the length of the head of the bullet is 1-1.5 diameters of the cylindrical section of the head of the body of the bullet;

the full length of the bullet is 3.6-4 diameters of the cylindrical section of the head of the bullet body;

the span of the stabilizer tail blades is 1 diameter of the head part and does not exceed the value of 0.78 of the diameter of the muzzle constriction of the bore;

the maximum diameter of the cylindrical section of the rod of the tail stabilizing part at the junction with the head part flush;

the connection of the head and tail stabilizing parts to each other into a single unit is made by installing the head part in a pre-made recess in the tail stabilizing part of the bullet;

the angle of inclination of the stabilizer blades is 0-5°;

the bevel angle of the leading edge of the stabilizer blade is 0-20°;

the angle of inclination of the rib on the peripheral surface of the separating container is 6-8° to the longitudinal axis of the separating container;

the length of the detachable container is 4-5 bore diameters, and its diameter is 1.00-1.003 bore diameters;

in the cartridge, the bullet is placed inside the sectors of the separating semi-containers, the bullet is placed in the cartridge case with the powder compressed by means of the obturator wad.

The cartridge works as follows

When creating a utility model, the task was to increase the accuracy and accuracy of the battle by improving the stabilization of the bullet on the trajectory.

The task is solved by:

the use of a detachable container 14 (Fig. 9) along the peripheral surface of which there are ribs that play a kind of role of rifling when a bullet moves in the barrel of a smooth-bore weapon;

the use of a cruciform stabilizer with an inclination of the tail in relation to the head of the bullet 15 (Fig. 9);

streamlined aerodynamic teardrop-shaped body of a sub-caliber bullet.

The use of a support-obturator system in the sub-caliber bullet, formed by sectoral detachable half-containers of a push-pull type, has achieved a reduction in deformations and the preservation of the axisymmetric aerodynamic shape of the bullet. The conditions for the exit of the bullet from the barrel are improved, the magnitude of the random perturbing impulse from the detachable elements and the jet of gases flowing from the barrel is reduced, the speed and energy of the bullet are increased by reducing the mass of the charge.

At the moment of ignition of the powder charge from the initiating agent, there is an initial surge of pressure in the charging chamber, which entails, due to the significant inertial mass of the bullet, the initial compression of the support-pushing pan and the slow initial movement of the bullet with the opening of the sealing of the barrel of the sleeve. From the moment the bullet moves, a further increase in the volume behind the bullet occurs due to combustible gases and the movement of the bullet towards the muzzle. According to the utility model, from the moment the bullet begins to move, it begins to twist due to the friction of the ribs located along the peripheral outer cylindrical surface of the sectional separating container against the walls of the sleeve and, subsequently, against the walls of the muzzle. The inertial mass of the warhead 17 (Fig. 9), acting on the support-obturation system, is reduced due to the mass of the tail stabilizing part of the bullet and, in addition, the body of the warhead is covered on all sides by separable semi-containers that prevent uncontrolled deformation of the body of the warhead, which reduces to minimize the deformation of the head striking part of the bullet.

The acceleration of the bullet is carried out by the pressure of the powder gases outside the bullet space, acting on the bullet, through the wad obturator 13 (Fig. 9). There are no deformations of the bullet, since all its elements fit snugly against each other and experience all-round volumetric compression with the same pressure.

Further movement of the bullet in the bore occurs with self-centering of the bullet in the bore due to the rotation of the charge around its axis. Such a design of the support-pull obturator system of the bullet ensures further coaxial entry of the bullet into the muzzle constriction of the bore and the exit of the bullet from the muzzle constriction in a direction strictly coaxial with the bore. Since, until the bullet exits the barrel, the bullet is rigidly centered relative to the axis of the bore, and the sectoral separating container 14 (Fig. 9) on the barrel is demolished from the bullet under the action of counter air pressure, uniform opening of the separating container is ensured by the presence of a cone ejector 16 (Fig. 9) in front of the plumage of the tail stabilizing part 15 (Fig. 9). Such a passage of the muzzle by the bullet minimizes the probable initial perturbations both in the direction of the bullet's flight and in the position of its longitudinal axis relative to the aiming line, which improves the accuracy and accuracy of shooting. When the bullet moves along the flight path, due to the inclination of the stabilizer blades, the bullet twists around the longitudinal axis. As a result, there is a gyroscopic effect. As a result of the above actions on the bullet, a huge stabilizing moment instantly arises, returning the longitudinal axis of the bullet in the direction of the velocity vector of the center of mass of the bullet. The flatness is increased due to the twisting of the bullet in the barrel with the help of ribs on the peripheral surface of the separating container and the inclination of the plumage blades. Also, the stability of the bullet on the trajectory has been increased and aerodynamic losses have been reduced, and ultimately, high accuracy and accuracy of the hunting cartridge battle have been achieved with a significant increase in the kinetic energy of the bullet and the range of the cartridge.

Thus, an increase in the flatness of the bullet, accuracy and accuracy of the battle is achieved.

The manufacture of all components of the named cartridge and sub-caliber bullet is based on materials and technologies well known to specialists in cartridge production.

Claims (1)

The sub-caliber bullet consists of a head striking part, a tail stabilizing part, a pulling four-section container, a pushing obturator wad, characterized in that the tail stabilizing part is configured to form a streamlined aerodynamic drop-shaped body shape, the cruciform stabilizer blades on the tail stabilizing part have an inclination angle of 0° up to 5° to the longitudinal axis of the bullet, the pulling four-section container is made completely around the streamlined aerodynamic teardrop-shaped body of the bullet, along the peripheral surface of the pulling four-section container there are ribs at an angle of 6-8° to the longitudinal axis of the container, the longitudinal ribs on the container have a height of 0.1-0 .2 mm around the entire peripheral circumference, a cone ejector is located in front of the cruciform stabilizer.

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