EP1241435A1 - Projectile and manufacturing method therefor - Google Patents

Abstract

A projectile comprises a mantle (14), a projectile base (12) which closes the rear of the mantle, a spool (16) for receiving electromagnetic signals, an energy source (22) and a logic module (23). At least the rear of the mantle is made of plastic.

Description

The project relates to a projectile according to the preamble of claim 1 and a method for its production according to the preamble of claim 15 and 18 respectively .

Projectiles of this type are intended to disassemble or detonate in flight and are therefore also called 'Air Bursting Munitions', abbreviated ABM, designated. Projectiles detonating in flight have timers, revolvers or proximity detonator. The location or the time of the detonation should be selectable or adjustable. With newer projectiles the setting of the The time of the detonation or temperature control is not done manually by manipulation on the projectile before loading, but automatically, either during feeding or in the chamber or by inductive signal transmission at the muzzle at the launch. The projectiles have special devices for receiving the signals and via an energy source for operating a Detonator logic and to deliver the electrical energy required in the projectile to Trigger the detonation.

The demands placed on such projectiles are numerous.

On the one hand, in order to achieve a good effect, the one brought to the detonation site The effective mass should be as large as possible and the resulting from the detonation Projectile parts should have the highest possible speed; this requires among other things, a high drive pressure on the projectile floor, which runs solidly must be a high axial acceleration and a high muzzle velocity, so that also rotational speeds and rotational accelerations are high. The programmable device with the energy source and the logic module must function reliably and precisely.

Secondly, the ineffective mass to which the programmable device, especially the receiving coil, the energy source and the logic module belong, be as small as possible. Accordingly, the programmable device delicate and vulnerable parts that need to be well protected so that they have the great forces caused by the great accelerations will survive.

Finally, the projectile should be able to be produced efficiently, if possible from individually producible units that are manufactured in parallel and then in simple Can be put together; A modular one is therefore desirable Construction.

So far, no projectiles of the type mentioned at the outset are known to all of them Requirements met.

• ein Projektil der eingangs genannten Art so zu verbessern, dass die Nachteile der bekannten Projektile entfallen, und
• ein Verfahren zur Herstellung dieses Projektils vorzuschlagen.

The object of the invention is therefore seen in

• to improve a projectile of the type mentioned at the outset so that the disadvantages of the known projectiles are eliminated, and
• to propose a method for producing this projectile.

• für das Projektil durch die Merkmale des kennzeichnenden Teils des Anspruchs 1, und
• für das Verfahren durch die Merkmale des kennzeichnenden Teils des Anspruchs 15 bzw. 18.

The solution of this object is achieved according to the invention

• for the projectile by the features of the characterizing part of claim 1, and
• for the method by the features of the characterizing part of claims 15 and 18 respectively .

Advantageous developments of the projectile according to the invention are defined by the claims are defined by claims 2 to 14 , and advantageous developments of the method according to the invention are defined by claims 16 and 17 .

According to the invention, the new projectile has a jacket which is at least in the The rear area of the projectile is made of a plastic. This is the non-effective mass of the projectile less than that of a projectile with one metallic cladding, and surface treatments, as in conventional metallic coats are not required.

The shape of the plastic can be machined or non-cutting Procedure.

The plastic for the jacket is preferably shaped by a non-cutting process such as pressing or spraying; such operations are particular for large quantities, as is common in the manufacture of projectiles are rational, since then the cost of the shape is practically insignificant.

It is particularly advantageous here, at the same time as the chipless shaping of the Jacket the mutual connection of the jacket with the for strength reasons to perform in general metallic projectile floor, the projectile floor used as an insert in the for the manufacture of the plastic part Injection mold introduced and the plastic is encapsulated.

By optimally designing the jacket, instead of a separate guide belt in the rear area of the jacket a guide belt section or an integral one molded guide band are generated.

A reception coil is arranged for receiving external signals. Because this before Pressure must be protected, it is advantageous not to the extent of the projectile but arranged inside the projectile. This means that the plastic from which the jacket is made, at least in the area of Receiver coil has no shielding effect against electromagnetic waves or signals. By arranging the receiving coil inside instead on the outside of the jacket it becomes superfluous, an elaborate protective wrapping, as for a conventionally arranged on the outside of the jacket Receiving coil is necessary to provide. You avoid - even better than with the protective wrap - that the conductors that make up the receiving coil deform; this will interfere with the signals to be received avoided due to deformation of the conductor and the risk of short circuits reduced. It further increases the risk of moisture ingress practically turned off. It is also essential that because of the smaller distance the receiving coil from the project longitudinal axis the circumferential acceleration and thus the forces acting on the receiving coil are reduced.

It has proven beneficial to wind the receiving coil on a separate one Apply bobbin. The receiving coil can thereby as a Unit manufactured and then with the energy source and the logic module to be assembled.

The energy required can be generated externally and transmitted to the projectile: It is advantageous because it is independent of the weapon system, but it is an internal energy source, for example with a shock generator.

To create the conductor connection between the energy source, logic module and To produce the receiving coil in a simple manner, it is favorable to use the receiving coil to be arranged adjacent to the energy source and to the logic module.

Such a design of the new projectile, according to which the energy source and the logic module are arranged adjacent to the receiving coil es, the conductor connection between the receiving coil, energy source and logic module easy to create; non-automatable and therefore expensive Steps such as placing the conductor connection in a narrow implementation, as they are necessary with external receiving coils, are not necessary.

A particularly advantageous projectile according to the invention is designed such that its active mass, in particular explosives and possibly active bodies, in the front Area of the projectile are arranged; so you get a good effect, as explained below: After the detonation, the velocity vectors add up the resulting active body to the speed of Projectile, and the sum of the speeds is the average of all arising Parts larger in projectiles with front active mass; Furthermore can, for example, in house fighting, by detonating the projectiles the goal of enlarging the target area can be achieved in comparison with conventional ammunition or ABM with a detonator is considerable.

When manufacturing the new projectile, several components are separated manufactured and then assembled. This has three essentials Advantages: Firstly, warehousing and manufacturing are more flexible, secondly, at shorter throughput times possible, since parallel to the individual components can be worked; third, no sensitive Components through subsequent manufacturing operations before use preloaded or even damaged.

Fig. 1

ein erstes Ausführungsbeispiel des Projektils nach der Erfindung, in Einem die Projektilängsachse enthaltenden Schnitt;

Fig. 2

ein zweites Ausführungsbeispiel des Projektils nach der Erfindung, in gleicher Darstellung wie Fig. 1; und

Fig. 3

ein drittes Ausführungsbeispiel eines Projektils nach der Erfindung, in gleicher Darstellung wie die Fig.1 und 2.

In the following, details and advantages of the invention are described in detail using an exemplary embodiment and with reference to the drawing. Show it:

Fig. 1

a first embodiment of the projectile according to the invention, in a section containing the longitudinal axis of the projectile;

Fig. 2

a second embodiment of the projectile according to the invention, in the same representation as Fig. 1; and

Fig. 3

a third embodiment of a projectile according to the invention, in the same representation as the Fig.1 and 2.

The projectile 10.1 shown in FIG. 1 with the longitudinal axis A of the projectile has a projectile base 12 made of a suitable metal and a jacket 14 , which consists at least in the rear area, but preferably entirely, of a suitable plastic. The jacket 14 is produced by a press or injection molding process, but could alternatively also be formed by machining. Simultaneously with the manufacture of the jacket 14, it can be connected to the projectile floor 12 ; In order to obtain a secure connection between the projectile base and the jacket 14 , the projectile base 12 has grooves 12B on the outer surface of its essentially hollow cylindrical base region 12A . The grooves 12B are extrusion- coated with the material of the jacket 14 , so that the forwardly projecting bottom region 12A is connected to a laterally projecting jacket region 14A .

It is also possible to fasten the projectile base 12 and the jacket 14 to one another by another suitable connection, such as, for example, a screw connection, welding, gluing or a plug connection, as will be described below with reference to FIG. 2 .

The plastic used to produce the jacket 14 may contain fillers, but at least in the area of the receiving coil it must consist of a material that does not form a shield against electromagnetic waves or signals. Instead of a plastic, other materials that do not have a shielding effect against electromagnetic waves or signals, for example ceramic or glass, can also be used.

An integral guide band 15 is formed on the outer contour of the jacket 14 ; this eliminates the production and assembly of a separate, for example metallic, guide belt.

A receiving coil 16 is arranged centrally as part of the programmable device, the winding 18 of which is attached to a coil former 20, preferably made of a plastic, in the center of the projectile longitudinal axis A.

The receiving coil 16 is conductively connected to an energy source or energy storage unit 22 and a logic module 23 . In order to establish the conductive connection between the receiving coil 16, energy source or energy storage unit 22 and logic module 23 , a conductor does not have to be passed through a narrow bore, as in conventional projectiles, but the connection can be made due to the central arrangement of both the receiving coil 16 and the energy source or Energy storage unit 22 and the logic module 23 can be created in a simple manner. For example, the conductive connection including the actual contact can be made by soldering. In another variant, an inserted intermediate part can be used, the contacting being produced by means of a conductive adhesive. It is particularly easy to manufacture, but it is less certain to make the contact simply by pressing. A plug-in connection is complex to manufacture, but this ensures great security and is easy to assemble.

The projectile 10.1 described above according to FIG. 1 is produced as follows: the jacket 14 is produced by spraying; the projectile base 12 is extrusion-coated with the plastic of the jacket 12 or the tail. The energy source or energy storage unit 22, the logic module 23 and the receiving coil 16 are then introduced from the front.

2 shows a further projectile 10.2 according to the invention. The projectile 10.2 differs only slightly from the projectile 10.1, therefore only the details deviating from FIG. 1 are described below, and the same reference numerals are used for the individual structural elements in FIG. 2 and further below in FIG. 3 as in FIG Fig. 1. In contrast to the projectile 10.1 in the projectile 10.2, the inner diameter of the jacket region 14A projecting to the rear is larger than the outer diameter of the coil 16.

The projectile 10.2 is produced as follows: The jacket 14 or the rear is produced by non-cutting or machining, the jacket region 14A projecting to the rear being provided with an internal thread 14B . The projecting bottom area 12A of the projectile bottom is not provided with the ribs 12A but with an external thread 12B which is complementary to the internal thread 14B . The receiving coil 16, the energy source or energy storage unit 22 and the logic module 23 are manufactured individually, attached to the projectile base 12 and contacted. Finally, the resulting component is introduced into the jacket 14 from behind, the connection of the projectile base 12 and jacket 14 being achieved by screwing the external thread 12B into the internal thread 14B .

A third projectile 10.3 is shown in FIG. 3 . The same material is used for the projectile base 12 for the projectile 10.3 as for the jacket 14; in this case, the projectile base 12 and the jacket 14 are produced integrally in a press or injection molding process as a press or injection part 13 . The reception coil 16, the energy source or energy storage unit 22 and the logic module 23 are produced separately, then these three components of the projectile 10.3 are combined into one component in the same way as described with reference to the projectile 10.1 of FIG. 1 , and this component mounted from the front in the pressed or injection molded part 13 .

In all three projectiles 10.1, 10.2, 10.3 , the receiving coil 16, the energy source or energy storage unit 22 and the logic module 23 are arranged in the rear projectile area, so that the front projectile area is free to accommodate an active mass, not shown.

Claims (18)

Projectile (10.1, 10.2, 10.3) with a coat (14), a projectile bottom (12) which closes the jacket (14) at the back, a receiving coil (16) for receiving electromagnetic signals, one with the receiving coil (16) contacted energy source (22) and a logic module (23), characterized in that the jacket (14) is made of a plastic at least in the area of the rear. Projectile (10.1, 10.2, 10.3) according to claim 1,
characterized in that the jacket (14) is made entirely of a plastic. Projectile (10.2) according to one of Claims 1 to 2,
characterized in that the jacket (14) is produced by machining. Projectile (10.1) according to one of claims 1 to 2,
characterized in that the jacket (14) is produced by non-cutting shaping. Projectile (10.1) according to claim 4,
characterized in that the connection of the projectile bottom (12) to the jacket (14) is produced by the material of the jacket (14) deformed without cutting. Projectile (10.2) according to one of claims 1 to 5,
characterized in that the connection of the projectile base (12) to the jacket (14) is a screw, plug-in, adhesive, welded or soldered connection. Projectile (10.3) according to claim 4,
characterized in that the projectile base (12) is made of the same plastic as the jacket (14) . Projectile (10.3) according to claim 7,
characterized in that the projectile bottom (12) and the jacket (14) as an integral press or. Injection molded part (13) are made. Projectile (10.1, 10.2, 10.3) according to one of claims 1 to 8,
characterized in that an integral guide band (15) is formed on the jacket (14) . Projectile (10.1, 10.2, 10.3) according to one of claims 1 to 9,
characterized, that the receiving coil (16) is arranged inside the jacket (14) , and that the plastic from which the jacket (14) is made is shielded against electromagnetic waves at least in the region of the receiving coil (16) . Projectile (10.1, 10.2, 10.3) according to one of claims 1 to 10,
characterized in that the receiving coil (16) has a winding (18 ) which is attached to a coil former (20) . Projectile (10.1, 10.2, 10.3) according to one of claims 1 to 11,
characterized in that the energy source (22) and the logic module (23 ) are arranged inside the jacket (14) and are adjacent to the receiving coil (16) . Projectile (10.1, 10.2, 10.3) according to one of claims 1 to 12,
characterized in that the contacting of the winding (18) of the receiving coil (16) with the energy source (22) is produced by soldering, gluing with a conductive adhesive, pressing or by means of a plug connection. Projectile (10.1, 10.2, 10.3) according to one of claims 1 to 13,
characterized in that the receiving coil (16), the energy source and the logic module (23) are arranged in the rear region of the projectile (10) . Method for producing a projectile (10.1, 10.3), comprising a coat (14), a projectile bottom (12) which closes the jacket (14) at the back, a receiving coil (16) for receiving signals, and an energy source (22) contacted with the receiving coil (16 ) and a logic module (23), wherein the receiving coil (16) and / or the energy source (22) and / or the logic module (23) are preferably arranged in the vicinity of the longitudinal axis of the project and preferably in the rear area of the projectile, characterized, that projectile floor (12) is produced, that the jacket (14) is made of a plastic, that the jacket (14) is connected to the projectile base (12) , that regardless of the manufacture and the connection of the jacket (14) and the projectile base le (12), the receiving coil (16) by generating a winding (18) on a bobbin (20) , the energy source (22) and the logic module (23) are manufactured, and that the receiving coil (16), the energy source (22) and the logic module (23) are then mounted. A method according to claim 15,
characterized in that the jacket (14) is produced by non-cutting shaping and is thereby connected to the projectile base (12) . A method according to claim 16,
characterized in that the jacket (14) and the projectile base (12) are produced from the same material as an integral pressed or injection-molded part (13) . Method for producing a projectile (10.2), comprising a coat (14), a projectile bottom (12) which closes the jacket (14) at the back, a receiving coil (16) for receiving signals, and an energy source (22) contacted with the receiving coil (16 ) and a logic module (23), wherein the receiving coil (16) and / or the energy source (22) and / or the logic module (23) are preferably arranged in the vicinity of the longitudinal axis of the project and preferably in the rear area of the projectile, characterized, that the jacket (14) is made, that the projectile floor (12) is produced, that the receiving coil (16), the energy source (22) and the logic module (23) are combined with the projectile base (12) to form a component (12, 16, 22, 23) , and that the component (12, 16, 22, 23 ) is mounted in the jacket (14) .

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