DE8717995U1 - Spin-stabilized, sub-caliber training projectile - Google Patents

Description

DP 1047 DE GM UB/Mr.

DIEHL GMBH & CO., 8500 Nuremberg Spin-stabilized, sub-caliber training projectile

The invention relates to a spin-stabilized, sub-caliber training projectile which has means on the circumference which reduce the rotational speed of the projectile on the trajectory from a certain firing distance in such a way that the projectile has a relatively short residual trajectory.

A spin-stabilized projectile is known from the German patent 32 01 629, whose rotational speed is reduced by means of small vanes on the flight path so that from a predetermined firing distance its range is drastically reduced due to instability phases. When penetrating target structures, it can happen that the parts that reduce the spin break off. As a result, the effect of shortening the flight path is not achieved.

The invention is based on the task of proposing a projectile that can withstand the penetration of target structures, such as steel frames for target plates, without damage and has a reduced-range trajectory.

The invention solves this problem according to the characterizing features of claim 1.

Advantageous further training can be found in the subclaims.

The sections responsible for reducing the twist are designed to be fracture-resistant and their effectiveness is not significantly reduced if damaged.

Embodiments of the invention and their advantages are described with reference to the drawings.
It shows:

Fig. 1 a training projectile with a section formed from circular arcs;

Fig. 2 shows a section U-II according to Fig. 1;

Fig. 3 a projectile with a cross-section also formed from arched sections;

Fig. 4 shows the projectile according to Fig. 3;

Fig.5

up to 9 different cross-sections of training bullets.

According to Figures 1 and 2, a training projectile 1 has a section with a conical tip 10, a section 3 with a cross-section 12 formed from curved sections 11 and a projectile center of gravity 6, a section 4 with a recess 13, a cylindrical shaft 14, shoulders 15, 16 and in section 5 a circular collar 17.

The projectile 1, which is to be fired from a large-caliber tank gun and is made of steel, has the required rapid trajectory, comparable to a live projectile, up to the intended target distance of 2.5 km. Accordingly, the required hit pattern is also present on the target plate. When penetrating the target plate, which is made of aluminum, there are no protruding parts on the projectile 1 corresponding to the longitudinal ribs according to the

the patent specification mentioned in the technology; therefore, the projectile emerges from the target plate intact and now enters the range-reduced phase. In this phase, projectile 1 already has a reduced speed.
35

The reduction in the projectile speed caused by section 3 causes it to become unstable, so that projectile 1 falls to the ground prematurely. It is important here that the projectile structure is retained even if it accidentally penetrates the relatively hard frame or if projectile 1 ricochets off the ground. The structure is also essentially retained when it penetrates armored targets, so that the reduced projectile trajectory is still present afterwards.

According to Figures 3 and 4, a projectile 20 has sections 21 with a projectile nose 22 and a section 23 with a projectile shaft. The projectile shaft 24 is formed from curved sections 11 according to Figure 1, section 3. These curved sections 11 end in the projectile nose 22.

According to Fig. 5, a speed-reducing section 30 has a square cross-section 31 with rounded edges 32 and straight sections 33.

According to Fig. 6, there is also a square cross-section 35 with bevelled edges 36 for a section 37.

In Fig. 7, a hexagonal profile 39 is shown for a section 38.

Fig. 8 shows a circular cross-section 41 with four semicircular ribs 42 for a section 40.

According to Fig. 9, a section 50 has an approximately circular cross-section with ribs 51 arranged next to one another. These ribs 51 are semicircular.

All cross-sections described have at least one axis of symmetry 7, see the cross-sections according to Figures 2 and 4. The other cross-sections have two axes of symmetry. 35

The choice of material for projectile 1 depends on the ballistic requirement.

The non-circular cross-sections of the bullet allow for a rotationally locked 05 positive connection with a sabot. This makes this ammunition also suitable for an insert barrel system for large-caliber weapons for target practice.

Claims (5)

DP 1047 DE - VIB/&EEgr;&ggr;. P a L e if C Claims 1. Spin-stabilized, sub-caliber training projectile, which has means on the circumference that reduce the speed of the projectile on the trajectory from a certain firing distance in such a way that the projectile has a relatively short remaining trajectory, characterized in that the projectile (1) has a non-circular cross-section (12) and the cross-section is symmetrical to at least one axis of symmetry (7). 2. Training projectile according to claim 1, characterized in that the cross section (12 or 30) has a contour deviating from the circular shape and is formed by curved sections (11 or 32) and/or straight sections (33). 3. Training projectile according to claim 1, characterized in that the projectile (1) has a recess (14) in its rear section (4) which is delimited on the projectile base side by a shoulder (16) of a circular collar (17). 4. Training projectile according to claim 1, characterized in that it is made of steel. 25 5. Training projectile according to claim 1, characterized in that it consists of heavy metal.