DE1017493B - Long bullet for handguns - Google Patents

Description

GERMAN

The invention relating to an infantry bullet is based on the common infantry bullets, the length of which is relatively small in order not to exceed the permissible weight.

The invention aims a \ ^A ergrößerung the projectile length and reduction of the projectile weight without deteriorating the flying stability and accuracy of the bullet. So far, in order not to reduce the stability in the trajectory and the accuracy even with partial use of light metal, the projectile length could not be increased by more than four calibres. The part of the projectile length available for the tapered projectile tip and the tapered projectile rear was so small that the aerodynamic resistance of the projectile turned out to be relatively large.

The decisive factor for the flight stability of a twist-stabilized projectile is primarily sufficient great stability factor. The stability factor becomes greater, the greater the longitudinal moment of inertia and the smaller the transverse moment of inertia of the projectile is chosen.

A particularly large ratio between the longitudinal moment of inertia and the transverse moment of inertia of the projectile is achieved if a projectile core made of light metal is used and if this Light metal core the bullet jacket made of heavy metal at its front end or at towers above both ends.

A jacketed bullet with a steel core is known, the jacket of which has approximately the same density as the projectile core has. Even if the core of the projectile protrudes beyond the shell of this projectile, this is because the projectile is made of a steel rod clad with a copper alloy is made by turning and parting, with of course the bullet jacket at the tip of the bullet must be eliminated. The increase in the ratio required to improve flight stability between the longitudinal moment of inertia and the transverse moment of inertia, even if the projectile jacket is open at both ends, can only be achieved if the projectile core is made of a material of lesser material Density than that of the jacket material is made.

It is also a full steel bullet with a copper jacket, preferably intended for artillery known that the projectile core protrudes significantly at both ends. However, this is only the case an exceptionally wide projectile leadership in place of the well-known narrow guide rings. Even if it is the known projectile Should be a projectile for handguns, the copper jacket is also only used for guiding Long bullet for handguns

Applicant:

Instituto Nacional de Industria
and Günther Voss Crenzien, Madrid

Representative: Dipl.-Ing. W. Schmitzdorff,

Dr.-Ing. H. Ruschke, Berlin-Friedenau, Lauterstr. 37,

and Dipl.-Ing. K. Grentzenberg, Munich 27,

Patent attorneys

of the projectile in the rifle barrel. Some connection between the longitudinal dimension this jacket, if you want to see it as a bullet jacket at all, with the longitudinal dimensioning of the bullet jacket for the projectile according to the invention is not available.

In another known rifle bullet with a soft lead core and an equally long one The bullet jacket made of harder material is open at both ends is a definite one Dum-dum bullet for hunting purposes that has no points of contact with the bullet according to the invention Has.

The long bullet for handguns according to the invention differs from the known bullets in that it is a combination of a light metal core with one that is open at both ends The jacket is made of heavy metal, over which the core protrudes at the front end or at both ends. aside from that A further improvement of the projectile can be achieved in that the wall thickness of the Jacket, which is pressed into a recess in the core, increases from front to back.

It is readily apparent that such an infantry projectile with a comparatively small weight low aerodynamic drag, great flight stability and high accuracy Has.

The drawing shows a projectile according to the invention in longitudinal section. With 1 the bullet core is off

709 700/81

Light metal or another low-density material. As a material z. Legs age-hardenable aluminum alloy in question. The core 1 protrudes from the front and back over the one Heavy metal made coat 2 addition. The sheath 2 is in one over the circumference of the core extending recess of the core 1 pressed in, so that between the annular ends 3 and 4 of the Recess seated jacket can not move axially. The wall thickness of the jacket can be The front part should be chosen less than the rear part, since the stress on the projectile when it is launched in the front part of the storey is lower than in the rear. By shortening the coat and the Extension of the light core beyond the two ends of the jacket as well as by reducing the Wall thickness of the jacket in its front part furthest from the center of gravity of the storey this results in an increase in the stability factor which is desired for improving the flight stability.

Claims (2)

Patent claims: 1. Long projectile for handguns, characterized by the combination of a light metal core (1) with a jacket (2) made of heavy metal, which is open at both ends and which the core protrudes at the front or at both ends.
2. Projectile according to claim 1, characterized in that the wall thickness of the jacket (2) pressed into a recess in the core increases from front to back. Considered publications:
Swiss Patent No. 185 847;
French Patent No. 513,606;
Biitische Patent Specification 2344 from 1893;
U.S. Patent No. 2,303,449. 1 sheet of drawings