SE468142B - WITH AT LEAST ONE DISTANCE ORGANIZED PROJECT - Google Patents

Description

lié 10 15 20 25 30 35 1112 The functional sequence between tank protected by active armor and armored explosive device with two RSV charges, hereinafter referred to as pre-penetrator and main charge, is briefly as follows = - The armored explosive device indicates the presence of targets and initiates the pre-penetration. jet, which penetrates and initiates the explosive of the active armor.

- The active armor panel throws the plates in the normal direction of the plates. Since the trajectory of the armored explosive device does not very likely coincide with the trajectory of the ejected plate of the active panel, any edge of the plate will cut the trajectory of the grenade.

When the plates have been thrown out far enough, ie the edge of the plate has cut the trajectory of the grenade, the main charge shall be initiated, which forms an RSV jet, which penetrates the main armor of the tank.

From the above it appears that if the pre-penetrator is initiated near the active armor plate, there is a great risk that the ejected plate collides with the mean head charge before it is initiated. In this case, the effect is absent.

It is readily appreciated that the above target function may have very different probabilities of function depending on the size of the input parameters. Thus, for example, the size of the active panel, the ejection speed and angle of the plates, the speed of the projectile and the distance at which the pre-penetrator is initiated in front of the target. Since the designer of the armored explosive device cannot influence the first two parameters, he is referred to optimize the two later parameters in order to achieve the greatest possible functional probability - PBPHB- 10 15 20 25 30 35 468 142 'The distance in front of the target , where the armored explosive device is to be initiated, should with regard to now known constructions on active armor, be at least 0.5 - 1.5 m, in order to obtain a high functional probability for a grenade with two RSV charges. With the technology now available, it is difficult to arrange an initiation device that indicates target presence at these distances. The technical possibilities that are now available are a rod at the front of the armored grenade or a zone tube. Target presence can be based on a signal emitted from the zone tube, which is reflected towards the target, or measurement of the anomalies in the earth's magnetic field that a target causes.

Zone pipes of the mentioned types have disadvantages, for example zone pipes can be disturbed by the target, the target can have different surface cladding and masking. The magnetic signature also has a short spread around the target. Furthermore, zone pipes are expensive. The use of zone pipes in anti-tank ammunition is for these reasons limited and not desirable.

The currently most widespread construction consists of rods arranged in some way, for example according to the patents GB 957 956 or EP 0 22? 622 and 0 236 S53. The English patent shows rods in anti-tank grenades with a single RSV charge, but illustrates the situation well.

The rod is arranged so that after target indication, the RSV charge is initiated, which forms the RSV beam. This passes the inside of the rod to first penetrate the remnants of the rod of the initiator and then penetrate the armor of the target. The RSV beam loses energy when passing the rod tip, which could otherwise have contributed to the penetration of the target's armor.

When the rod is to be used in an armored explosive device with two RSV charges, the reduction of the rod tip on the pre-penetrator beam becomes a more serious disadvantage. The reason for this is that it is desired to give the pre-penetrator as large a caliber and capacity as possible in order for it to actively penetrate armor safely. For reasons of weight and volume and partly that the pre-penetrator should not damage the main charge during detonation, it is desired to make the pre-penetrator as small as possible. Furthermore, the pre-penetrator should be placed as far away from the main charge as possible to avoid damage from the pre-penetrator during detonation.

The rod should have lengths up to 0.5 - 1 m as above and for external ballistic reasons be as thin as possible. The rod will then be elastic under the trajectory of the grenade to such an extent that the RSV jet of the pre-penetrator will penetrate the wall of the rod. Even in this case, you lose energy that is desirable to participate in the goal.

An armored explosive device with a rod of 0.5 - 1 m means significant difficulties in transporting, handling and loading.

The rod must therefore be designed so that it unfolds when the grenade is fired from the weapon. This can be arranged so that the rod is divided into a number of tubular parts with different diameters, each inserted into each other. A spring can push the rod out to its full length.

For practical reasons, the length of the rod in the rest position is 0.1 - 0.3 m. When this recessed rod is mounted on the tip of the armored explosive device, difficulties here also arise in transporting, handling and loading.

Patent specification DE 3,137,198 discloses a spacer rod which, in the rest position, is recessed in an inner cavity in front of an RSV charge. The rod has the shape of a prestressed spiral band of steel. 90 °, after which it is unfolded by the inherent spring force. To unfold the rod, it must first be turned approx. This rod has the disadvantage that its length in the unfolded position only amounts to slightly more than the caliber of the grenade, ie about 0.08 - 0.15 m. This is completely insufficient for a projectile according to the present invention, 2D 25 468 468 142 where rod lengths of 0.5 - 1 m are required.

DISCLOSURE OF THE INVENTION The object of the present invention is to provide a projectile of the kind initially indicated, in which the above-mentioned disadvantages are eliminated. This object is achieved in that the projectile according to the invention has obtained the badge marks stated in claim 1.

The projectile according to the invention offers the following advantages: - The rod can be made thinner, since no center hole is needed for the RSV jet of the pre-penetrator to pass through the center of the rod.

- Because the rod can be made thinner, there will be less external ballistic consequences at the same rod length.

- Initiation device in the rod tip or rod wall Not located in the path of the pre-penetrator RSV beam.

- When the rod in the rest position does not have to sit in the tip of the armor jump grenade, but can be placed next to the pre-penetrator, a shorter grenade is obtained. This will be less bulky and easier to pack, transport, handle and load.

- The pre-penetrator can be placed further away from the main charge, which provides more energy for the pre-penetrator's RSV beam and less risk of damaging the main charge.

DESCRIPTION OF THE FIGURES Figure 1 is a longitudinal section through an armored explosive device according to the invention with two RSV charges and with a spacer in the rest position. Figure 2 shows on an enlarged scale the spacer and a front portion of the grenade according to Figure 1. Figure 3 shows the grenade according to Figure 1 with the spacer in working position. 468 142 10 15 20 25 30 35 PREFERRED EMBODIMENT Figure 1 shows a fin-stabilized armor detonator 1 with two axially arranged RSV charges, namely a main charge 2 and a pre-penetrator charge 3, hereinafter referred to as pre-penetrator. The pre-penetrator 3 is intended to perform a pre-penetration into a target in a manner known per se, for example to penetrate an active armor in front of the target, to facilitate the subsequent penetration of the main explosive charge by a main armor in the target.

The pre-penetrator 3 is supported together with an initialization device (lighter) 4 for the pre-penetrator by a front grenade casing part which forms a support member in the form of a support sleeve 5, which transitions backwards into a funnel-shaped sleeve portion 6 for caliber adaptation to a rear grenade casing part 7. which has a considerably larger caliber than the sleeve 5 and which houses the main charge 2.

The initiating device 4 contains an electric generator 4a, which upon acceleration of the grenade due to the firing of the grenade through a fire tube (not shown) generates electric current to a capacitor 4b, which is connected to an electric detonator 4c for igniting the pre-penetrator 3.

On the funnel-shaped sleeve portion 6, for example with a screw connection, a guide tube 8 is rigidly mounted, in which an elongate spacer in the form of a rod-shaped, narrow element, for example a rod 9 of metal or plastic, is axially movable.

The guide tube 8 is eccentrically placed relative to the longitudinal axis 10 of the projectile, i.e. it is inclined, seen in the projectile firing direction 11, towards the longitudinal axis 10 of the projectile. almost in front of the projectile, but at a certain distance from the longitudinal axis 10 of the projectile so that sensor and initiation equipment arranged in the rod tip does not interfere with the RSV beam of the pre-penetrator 3. The rod 9 is extendable to the working position shown in Figure 3 by means of a spring 12 arranged in the bottom of the guide tube 8.

The rod 9 is attached to a ball latch 13, which consists of a locking sleeve 13a and locking ball 13b axially movable against the action of the spring 12, and can be locked in the extended position (figure 3) by a spring tongue 14 arranged on the guide tube 8. In the tip of the rod there is a combined stop sensor and initiating device 15, which is in a signal-transmitting connection with the initiating device 4 via an electrical cable 16.

The rod 9 is then hollow in the embodiment shown in order to be able to accommodate the cable 16.

The function of the spacer 9 is as follows.

When the armored explosive grenade, when fired through a barrel (not shown), accelerates through it, the sleeve 13a of the ball barrier 13 moves backwards relative to the grenade, the bullet 13b releasing the rod 9, which is thereby pushed forward relative to the grenade by the spring 12. When the rod 9 is pushed forward shown end position, the spring tongue 14 locks the rod in the extended (extended) position. During the acceleration in the barrel, the pre-penetrator initiation device 4 has been reinforced and generator 4a has charged the capacitor 4b in a known, and therefore not described manner in more detail.

When the tip of the rod 9 reaches the target, the sensor and initiating device 15 is deformed, thereby producing a current closure (not shown), which initiates the initiating device 4 via the cable 16, so that its capacitor 4b is discharged via the cable 16 to the detonator 4c in the initiating device 4. is thereby initiated and forms an RSV beam, which penetrates the target's active armor or, if this has no active armor, its main armor.

Variants of the invention are conceivable in that the projectile is provided with two or more spacers of the above-mentioned type, if complete outer ballistic balance is required.

Furthermore, the rod can be made so far that in the rest position it extends so far back that it is on the side of the main charge. The invention is also not limited to inclined rods, but this can alternatively be oriented parallel to the longitudinal axis of the projectile.

Although the grenade shown is fenstabilized, it can be given a slight rotation, for example by means of a conventional so-called sliding belt. The grenade can alternatively be rotation-stabilized. Although the spacer shown is located on the outside of the grenade, it is conceivable to at least partially enclose the same in a nose cone (not shown), which extends concentrically around the support sleeve 5 and the pre-penetrator 3.

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Claims (5)

10 15 20 25 30 35 468 112 'Batsntksey A projectile provided with at least one spacer, for example a grenade or robot, the projectile (1) having at least one explosive charge (3) and a lighter (4) for initiating it, and the spacer (8, 9) comprising a rod ( 9) with a stop sensor (15) for sensing the stop of the rod against a target, and wherein the stop sensor and the igniter are in signal transmitting communication with each other, characterized in that the rod (9) is axially movable in a guide tube (9) connected to the projectile ( 8), which is eccentrically oriented relative to the longitudinal axis (10) of the projectile, and that the rod (9) is extendable from the guide tube to an extended position (Figure 3), where the rod is eccentrically oriented relative to the longitudinal axis (10) of the projectile (1). Projectile according to Claim 1, characterized in that the guide tube (8), seen in the projectile firing direction (11), is inclined towards the longitudinal axis (10) of the projectile. A projectile according to claim 2, characterized in that it has a support member (5, 6) which carries said explosive charge (3), the guide tube (8) being mounted on the outside of the support member (6). Projectile according to any one of the preceding claims, characterized in that it has a main explosive charge (2) located behind said explosive charge (3), wherein the first-mentioned explosive charge is arranged to perform a pre-penetration in the target to facilitate the penetration of the main explosive charge by the target . 5. A projectile according to claim 4, characterized in that the two explosive charges (2, 3) consist of RSV charges.