RU2614991C2 - Bullet for smooth-bore guns - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: bullet consists of a main weighted part, the main part is made in the form of the cylinder with the spherical surface of the bullet front part of certain curvature (3), namely: the center of the sphere must be behind the center of bullet mass, this condition provides an bullet orientational directional stability during flight. Bullet is additionally endowed with centering ring lugs, coupled with cavities for flow of the lugs (4), which (lugs) provide precise alignment of the bullet axis with the bore axis while passing along it in a firing process.

EFFECT: improved accuracy when shooting.

2 cl, 2 dwg

Description

The proposed bullet for smoothbore guns consists of:

1. The main (lead) part (see Fig. 1) in the form of a cylinder with a spherical surface of the front part (1), which provides orientational stabilization of the bullet during the flight. This is achieved due to the displacement of the center of the spherical surface (6) relative to the center of mass of the bullet (7) and due to the influence of aerodynamic drag on the spherical surface of the bullet, the “tumbler” effect. In addition, centering annular protrusions (4) are provided along the lateral surface, which provide centering of the bullet in the barrel channel at the moment of its passage through it. Since the barrel bore is conical and the difference between the diameter at the inlet and outlet is large, and to ensure problem-free crushing of the annular protrusions, annular cavities (5) are provided after them for the overflow of these protrusions.

2. The tail part (2) (of light material) provides tight fixation in the cartridge, participates in the centering of the bullet, in the barrel channel especially at the initial stage and in the future in flight stabilization.

All of the above features will provide this pool with unique accuracy when shooting and, accordingly, provide it with high competitiveness.

I’m not aware of any analogues that are close in the way of providing exchange rate stability. This bullet is designed to equip cartridges, which, in turn, are intended mainly for firing smooth-bore guns in amateur and field hunting. For a more accurate understanding of the essence of this proposal is a sketch of the bullet (Fig. 1) and explanations for the design.

Design Explanations

1. The parameters of the radius of the frontal sphere are determined based on the claims: the center of the sphere (6) must be shifted relative to the center of mass (7), the displacement (8) should be as small as possible - less displacement is less than the radius of the sphere and accordingly less drag, but it is necessary to provide a stabilization effect (at a small bias it disappears) and it (the bias value) is determined empirically (in my practice it is 1-2 mm).

2. The diameters of the centering protrusions (4) are assigned based on the following conditions:

a) the internal diameter of the barrel corresponding to a distance of 120-150 mm from the breech of the barrel;

b) but not more than the inner diameter of the cartridge, bearing in mind the tight fixation in it (to a greater extent due to the tail of the bullet).

3. The tail of the bullet is preferably made of wood - it holds the load well along the fibers and is easily compressed across the fibers.

4. The hole for the fixing screw in the lead part of the bullet should be performed during the casting process (having provided in the mold for casting “pegs” in the form of a truncated cone).

5. Caliber 16 indicated on the sketch is given as an example. The claimed offer applies to all calibres.

6. A snapshot of the mold for casting a bullet is applied for clarity and as one of the methods for manufacturing it (bullet).

Claims (2)

1. The proposed bullet for smooth-bore guns, consisting of the main weighted part, the main part is made in the form of a cylinder with a spherical surface of the front of the bullet of a certain curvature, namely: the center of this sphere should be behind the center of mass of the bullet, this condition provides orientation bullet stability during the flight. 2. The bullet, in addition to the distinguishing features according to claim 1, is additionally endowed with centering ring protrusions coupled with cavities for the flow of these protrusions, which (protrusions) provide a clear centering of the bullet axis with the axis of the barrel channel when passing through it during the shot.

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