RU2347174C2 - 'alva' cast finned-arrow bullet - Google Patents

Abstract

FIELD: weaponry.

SUBSTANCE: invention relates to ammunition, particularly to cast finned-arrow bullets for smoothbore fowling pieces. The bullet front part represents two conjugated truncated cones while its face surface has a recess representing two truncated cones. The smaller base of outer cone makes the larger base of smaller cone, the center part representing a cylinder. The said cylinder bottom is furnished with a groove accommodating fins, while the bullet rear part represents a rod arranged on the cylinder bottom part side.

EFFECT: higher accuracy of fire.

3 cl, 1 dwg

Description

The invention relates to the field of ammunition, and in particular to the field of missile projectiles using a powder charge, and can be used when throwing shells from smooth-bore weapons, in the preferred embodiment, smooth-bore hunting weapons.

According to the method of stabilization in flight and design features, bullets for smooth-bore hunting weapons are divided into round, arrow, arrow-turbine, turbine, with gas-dynamic stabilization and gyroscopic stabilization. According to the manufacturing method, bullets for smooth-bore hunting weapons are divided into cast, stamped, turned, etc.

The bullets of the switch group are designed as a very short arrow. Unlike other types of bullets, they have a light stabilizer shank designed for self-orientation of a bullet in flight after departure from a gun barrel. The center of gravity of the arrow bullets is shifted to the front of the head, which ensures a more correct flight and does not allow overturning in flight. Bullets of this type have a wide variety of designs.

The well-known Shirinsky-Shikhmatov bullet (V.P. Kostenko. Bullets for smooth-bore hunting weapons. Reutov: Era, 2003, p. 11), which is a cylindrical monolithic body with a central axial through hole, expanding in the upper part, while the bullet contains two bands located in the upper and lower parts, the upper part is made in the form of a spherical segment, and the upper and lower parts are divided by slots into four equal sectors each. The Shirinsky-Shikhmatov bullet did not yet have a pronounced shank. She belonged to bullets of the expressive type. When it enters the body of an animal, it was torn into five parts.

The disadvantage of this bullet should be recognized as the ability in flight when meeting with a slight obstacle to unfold and lose direction.

The Yakan bullet is also known (V.P. Kostenko. Bullets for smooth-bore hunting weapons. Reutov: Era, 2003, p. 77). The Yakan bullet has a cylindrical shape with a rounded head. In the original version, the body of the Yakan bullet was cut into two-thirds of the length into four (rarely six) lobes. An express void was left in the head of the bullet, then filled with wax. After filling with wax, the bullet was pressed so that the incisions were not visible, while taking a streamlined shape and seemed monolithic. On the side surface of the body of the bullet, six thin guiding inclined triangular ribs are made. They are designed to center the bullet in the bore, partially crushing at the same time, in flight, these ribs give the bullet a slow circular rotation, which increases accuracy. On the tail of the Yakan bullet through the lead rod is fixed shank of wad.

The disadvantage of this bullet should also be recognized as the ability in flight when meeting with a slight obstacle to unfold and lose direction.

The Brenneke bullet is also known (see, for example, RU 2096732). The known bullet has a cylindrical shape, its head part is solid and pointed to the front in a cone. Wide rectangular inclined ribs are located on the side surface of the bullet body, and an annular obturating and centering belt is made at the base. These ribs center the bullet and give it a rotational motion in flight, the belt additionally closes the barrel and prevents the breakthrough of powder gases during firing. The shank consists of a cardboard pad and three wads and is screwed in with a fixing screw.

The disadvantage of this bullet should be recognized significant deformation at the time of the shot smokeless gunpowder.

Also known (SU 201161) bullet "VVOO-I". The specified bullet consists of two parts - the head and tail, and the head part (the actual bullet) is solid, cylindrical in shape and tapered in front. Flat parallel ribs made parallel to the axis of its symmetry are made on the body of the head part. In the lower part of the body of the bullet is made a flat annular guide belt. An annular groove is made on the bottom of the bullet for attaching the original polyethylene shank.

The disadvantage of the known bullet should be recognized creasing at the moment of the shot of the shank, which leads to the deflection of the bullet in flight.

The arrow bullet (DE 2804311) is also known, on the outer cylindrical surface of the body of which blind longitudinal slots of aerodynamic stabilization are made, forming longitudinal semi-finished fragments in the form of segments, a conical funnel is made in the head part, which is conjugated with a wedge plug of a denser material than the case material, in the tail of which the end cavity is made. The longitudinal slots of the body are inclined towards the funnel to facilitate radial rotation of the fragmentation segments by game fabrics, while in flight of the bullet in these slots peripheral diverging flows of incoming air are formed, which reduces the friction loss of speed. The conical plug serves as a weighting agent for the bullet head and serves for radial rotation of the body segments by wedging its central funnel due to relative axial displacement when meeting the obstacle.

The disadvantages of the known bullet include unsatisfactory axial stability during aerodynamic stabilization by radial slots on the side surface of the body and rarefaction of air from the bottom cavity at the end of the body.

Also known (SU 1141293) Polev's bullet. The body of this bullet is made of lead alloy and has the appearance of a mushroom-shaped body of revolution. A rod is made in the bottom part for fastening the stabilizer shank of the original design.

The disadvantage of the famous Polev bullet should be recognized as unsatisfactory axial stability in flight and the resulting small accuracy of hits.

Also known (SU 1141293) is an arrow bullet, the body of which is made of a lead alloy and consists of a head and a middle part and a tail part intended for attaching a stabilizer shank.

The disadvantage of the known bullet should also be recognized as unsatisfactory axial stability in flight and the resulting small accuracy of hits.

The developed Alva bullet also refers to arrow type bullets.

The technical problem, solved by using the developed technical solution, consists in the development of the arrow bullet for smooth-bore weapons of a new type.

The technical result obtained by the implementation of the developed technical solution consists in decreasing the tendency to ricochet while increasing the accuracy of shooting through obstacles such as reeds or shrubs, as well as increasing the stopping effect.

Bullet "Alva", the use of which ensures the achievement of the specified technical result, refers to a fundamentally new type of arrow bullets, consisting of the body of the bullet itself, made of lead alloy, and made with the possibility of attaching a stabilizer shank.

The Alva bullet is an arrow cast bullet, the body of which is made of a lead alloy and consists of the head and middle parts and the tail part, designed to attach the stabilizer shank. The head part is made in the form of two conjugated truncated cones, and on the side of its end surface, a depression is made in the form of two truncated cones, the smaller base of the outer of which is the large base of the smaller cone, the middle part is made in the form of a cylinder, in the bottom of which is made annular a groove for accommodating the stabilizer shank, and the tail of the bullet is made in the form of a rod located on the bottom of the cylinder.

For all calibers, said groove preferably has a width of 1.2 mm and a depth of 3.2 mm. For better compatibility of the bullet and the stabilizer shank, a step can be made in the lower part of the shaft.

The drawing shows the view of the Alva bullet, with the following notation used: bullet body 1, transitional part 2 in the form of a truncated cone, head part 3, end part 4, rod 5, ledge 6, groove 7, expansive cavity, upper part, 8, expansive cavity, lower part, 9.

In a preferred embodiment, the Alva bullet is made of an alloy of lead with tin. The bullet has the shape of a cylinder in the middle part, on the bottom of which a rod is fixed (with a diameter of 8.5 mm for 16 gauges) for connection with a shank in the lower part, and two transitional cones in the front part, having an end face of 90 ° and an expansive hollow in the form of combined cones to a height of 18 mm (for any caliber).

A groove 1.2 mm wide and 3.2 mm high (for any caliber) is made in the lower part of the cylindrical body of the bullet for fastening and rolling when firing a bullet body with a shank. The cylinder of the bullet rod is made with the possibility of support on the protrusion located in the vertical hole of the stabilizer shank. When accelerating during a shot, the stabilizer shank acts as a damper for a smoother start to the bullet movement, reducing bullet deformation and lower recoil. It also allows you to equip cartridges of the Magnum type.

Distinctive features of the developed bullet provide its low tendency to ricochet. In practical firing on solid wood (larch), the minimum angle at which the bullet does not rebound is 15 °. For comparison, the Poleva bullet has an indicator of 27-30 °, round - 37 °. Very confident bullet gives accurate shooting at a distance of 30 meters through the bush (turn) and thick reeds. Almost every known sub-caliber bullet has this weak point. And, the most important, the stopping action of the Alva bullet can be confidently called the best among the bullets both in domestic and foreign production existing in the commercial turnover. So, when a bullet enters a medium simulating the body of an animal (gelatin with bone fragments), the extracted bullet had a diameter of 29 mm (for 16 gauges), that is, the diameter of the bullet became 70% larger than the original. Sensitivity to expansion: for comparison, a Mayer 12-gauge (calibrated) bullet, considered the most sensitive to tear, shot in wet snow, increased in diameter to 22.5 mm. Alva bullet on the same snow increased in diameter to 24 mm, and this at 16 gauge. It is known that the diameter of a sub-caliber bullet is 15% less than the diameter of the caliber. So, for 16 gauge this will be 14.5 mm.

In all respects, this type of ammunition can be safely called a new stage in the development of applied bullet sports and new opportunities for hunting, where the accuracy of firing from smooth trunks, when using the Alva bullet, is as close as possible to the performance of rifled weapons, and the reliability of the battle makes hunting possible large and dangerous animals are more effective, reducing the number of wounded animals and reducing the degree of danger.

Since the Alva is a sub-caliber bullet, this allows for equally safe and accurate shooting from the trunks of any drill, including from the barrel with full-choke drilling.

Claims (3)

1. Cast arrow bullet, the body of which is made of a lead alloy and consists of a head and a middle part and a tail part, designed to connect a stabilizer shank, characterized in that the head part is made in the form of two conjugated truncated cones and from the side of its end surface in it is made a recess in the form of two truncated cones, the smaller base of the outer of which is the large base of the smaller cone, the middle part is made in the form of a cylinder, in the bottom of which is made annular to Navka to accommodate the shank stabilizer, and the tail part of the bullet body is formed as a rod, disposed on the side of the bottom of the cylinder. 2. The bullet according to claim 1, characterized in that said groove is made 1.2 mm wide and 3.2 mm deep. 3. The bullet according to claim 1, characterized in that a ledge is made in the lower part of the rod.