DE3929015A1 - Training missile for target practice - incorporates sharp tip more brittle than remaining portions - Google Patents

Abstract

The sub-calibre missile is used for target practice in limited spaces. It is made of homogenous material which can be hardened, it may be appreciably harder and more brittle at the tip than in its remaining portions (3, 4, 5). The tip portion (2) can be between 1/4 and 1/5th of the overall length. Steel can be used as the material. USE/ADVANTAGE - Sub-calibre practice and training missile in cheap and disintegrates on impact into portions travelling only for a relatively short distance.

Description

The invention relates to a sub-caliber training floor according to the preamble of claim 1.

A sub-caliber training floor according to the German patent 30 48 206 C2 corresponds to a first flight path section a combat missile. Then this floor disassembles on the basis of a integrated disassembly device into parts, which then quickly to the ground go.

When shooting at targets such as targets and tanks, also kick flat impact angles.

Rod-shaped projectiles without predetermined breaking points behave at flat angles of impact on a target "elastic" that is, they are redirected by the target and fly with relatively unchanged speed in another direction.

In the case of small, spatially limited practice areas, such bars can be used shaped projectiles pose a risk.

The object of the invention is a sub-caliber, rod-shaped Propose a projectile that is available in a cost-effective manner at soge called ricochets is broken up into relatively short flying parts.

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

Advantageous further developments can be found in the subclaims.

With the invention it is achieved that the entire floor at one Rebound breaks into long fragments. These fragments point unstable flight behavior and therefore have a low range wide. This ensures that in the case of missed shots where the If the target is missed, the floor hitting the ground flat is also completely disassembled and the existing security areas does not leave.

From the European patent 01 43 775 B2 a penetrator for a sabot projectile is known, in which there is a much higher strength in a tip area than in its central area. The strength in the tip area is 1290 N / mm ² , while in the middle area it is 800 N / mm ² . The penetrator thus has an armor-piercing effect with little risk of breakage in the central area. In contrast, the strength in the tip region is 1.6 times higher in the invention than in the known object. In contrast, the strength values in the middle areas of the projectiles facing each other are approximately the same.

It is therefore essential for the invention that the tip be hard rich and with it a very high material brittleness, which is described with a brittleness comparable to glass can be.

It is thus achieved that the tip touches the target flat long fragments are created in the area of the training floor, whereby the entire floor is divided into longitudinal fragments. At a such as the exercise bullet hitting a target at right angles a breakthrough is achieved with a corresponding thickness of the target. However, the impact impulse is also sufficient for the practice floor to be distributed completely in longitudinal splinters, which then after a short distance go down.

An embodiment of the invention is shown in the drawing poses.

A sabot projectile designed as a practice floor 1 is divided into four following sections, namely a tip area 2 , a front area 3 , a middle area 4 and a rear area 5 . The rear area 5 is provided with a tail unit 6 .

The total length of the practice floor 1 is designated 7 . The tip region 2 extends from the projectile tip 8 to a boundary line 9 which is at a distance 10 from the projectile rear 11 of 0.8 of the projectile length 7 .

The adjoining front area 3 extends up to a boundary line 12 which is at a distance 13 from the rear end 11 of the floor length 7 of 0.6.

This is followed by the central area 4 and the rear area 5 .

A strength diagram 15 of the steel practice bullet shows a strength of 2145 N / mm ² in the tip area 2 and a Vickers hardness HV 30 of 640. These values decrease in the area 3 before the beginning of the middle area 4 with the boundary line 12 to a strength of 800 N / mm ² and a corresponding hardness of 240. The latter values are constant in areas 4 and 5 .

When hitting a target (not shown) in a shallow manner, a deflection of the practice floor with subsequent onward flight in the undamaged state is prevented. The shock impulse at the flat impact on a target is sufficient for the training floor 1 - starting from the brittle projectile tip 8 or the corresponding impact point in the tip area 2 - to break completely into long fragments. These splinters have an unfavorable drag coefficient and quickly fall to the ground.

At approximately right-angled impact on a suitable target, such as a target plate, a bullet hole is reached, but afterwards the impact impulse causes the training bullet 1 to break completely into long fragments. Some of the fragments have a length corresponding to the distance 10 and larger.

The advantage of the invention is the simple structure and the costs Convenience of the training floor made of hardenable steel. The practice floor does not require any additional facilities Controlling the decomposition of the practice floor into a specific one Event, such as the time after the launch or sensation of the up impact point or the grazing point. The full one is also essential Functionality in the specified temperature range of - 49 Degrees Celsius to +84 degrees Celsius.

In addition to the described embodiment, which referred to the caliber training floor 1 , the invention is also applicable to a full-caliber training floor.

The practice floor 1 can also be hardened over its entire length 7 . The decisive factor for this is the firing strength of the practice floor 1 , in particular its transverse loads in the barrel.

Furthermore, in the case of a training projectile, a hardness curve can be provided which has the areas 2 and 3 with high hardness and then decreases the hardness continuously or in stages up to the tail unit 6 .

Claims (3)

1. practice projectile ( 1 ) for target shooting for small practice areas, characterized in that the practice projectile ( 1 ) consists of a homogeneous, hardenable material which, at least in its tip area ( 2 ), has a significantly higher hardness and brittleness than in its other areas ( 3-5 ). 2. Practice projectile according to claim 1, characterized in that the tip region ( 2 ) is approximately 1/4 to 1/5 of the projectile length ( 7 ). 3. Practice floor according to claim 1, characterized, that the practice floor is made of hardenable material such as steel.