EP4038340B9 - Active element and method for igniting an active element - Google Patents

Description

The invention relates to an active body, in particular a dummy target active body, comprising at least one active mass and at least two ignition means, each comprising a pyrotechnic set for igniting the active mass.

The invention further relates to a method for igniting an active body.

Active bodies, such as dummy target active bodies, are used in aviation. Since around 1970, such dummy target active bodies have been provided under a protective film or in a container and initiated from one side. This applies in particular to all conventional MTV (Magnesium-Teflon-Viton) dummy target bodies and spectral dummy target bodies.

The ignition chain is activated for the active body, which is preferably elongated in aircraft, from the firing side, preferably via a safety system, and then ignites the active body after release. These active bodies often have a quick-burning coating in order to achieve ignition on all sides in the required time.

Dummy target active bodies with certain active masses and geometries are subject to ignition problems due to the design and type of use, which can lead to delayed and reduced power development in the initial phase of initiation.

The initiation usually takes place from an ignition side in the base area, which is the so-called front side of the active body and passes through it inside or outside along the surface in the direction of the ejection side in order to finally achieve an all-round reaction of the active body.

The ignition problems described above can have a direct impact on effectiveness against the threat during the ignition phase.

The document DE 10 2009 030 871 A1 discloses an active body with a combustible active mass container based on plastic film, which can be ignited inductively, by means of a laser or by high temperature.

From the DE 102016 122740 A1 a pyrotechnic active body with a housing, an ignition device and at least one active set is disclosed. The ignition device is arranged, for example, in the bottom of the active body.

The patent application DE 10 2010 030 869 A1 discloses an active body with several active masses, which has several individual flares arranged one behind the other, which can be ignited inductively, by means of a laser or by high temperature.

The document DE 10 2009 030 872 A1 relates to an active body that is ignited inductively, consisting of individual flares which are packaged in a carrier material such as a steel foil coated with red phosphorus.

From the document DE 10 2010 013 110 A1 an encapsulated active body with a large number of individual components for an infrared dummy target is known, which provides a central longitudinal ignition

The document DE 10 2004 047 231 A1 discloses a generic active body which has a plurality of active compounds and igniting agents. How the ignition is carried out and how the ignition means are arranged is not disclosed.

From the US 2005/0241521 A1 An active body is also known, with at least two active masses that are ignited via a detonator.

Depending on the base material and geometry of the active body, it may happen that there is no suitable approved or resilient cover set that can be used for introduction as a military active body. However, changing the active mass composition or geometry is not possible without restrictions due to existing systems, which results in a conflict of objectives.

Furthermore, without a cover set, ignitability on all or multiple sides cannot be guaranteed.

Based on this, the invention is based on the object of creating an active body which enables rapid and reliable ignition of several active substances.

This task is solved by the active body of claim 1. Furthermore, this task is solved by the method of claim 13. Advantageous refinements and further developments are the subject of the respective subclaims.

According to the invention, an active body, in particular a dummy target active body, is provided, comprising at least one active mass, at least two ignition means, each comprising one Pyrotechnic set for igniting at least one active mass. The at least two ignition means are arranged on the at least one active mass and the at least two ignition means are connected to one another via channels in such a way that the at least one active mass can be ignited on multiple sides at the same time.

Furthermore, according to the invention, a method for igniting such an active body or as described below is provided. The active body comprises at least one active mass, at least two ignition means, each comprising a pyrotechnic set for igniting the active masses. The at least two ignition means are arranged on the at least one active mass and the at least two ignition means are connected to one another via channels in such a way that the at least one active mass can be ignited on multiple sides at the same time.

It is therefore proposed according to the invention to design the active body in such a way that it can be initiated on multiple sides but at least on two sides, for example on the side surfaces as well as the opposite side, i.e. ignited. It is therefore an active body with multiple ignition.

The at least one active substance is preferably at least one pyrotechnic active substance, such as those used in flares.

The channels are preferably ignition channels which are designed to ignite the ignition means or to conduct ignition up to the ignition means. The channels can be arranged symmetrically and/or asymmetrically to one another.

Multi-sided at the same time means that the active body or the at least one active mass can be ignited simultaneously at several points, such as sides, top, bottom or edges. Simultaneous in the sense of the invention means that the at least one active mass can be ignited essentially without any time delay.

The igniting means in the sense of the invention are, for example, squibs, smaller ignition-sensitive pyrotechnic sets or other known igniting means.

The multi-sided ignition according to the invention ensures that large-area, less sensitive active substances can be ignited quickly and reliably using significantly smaller ignition means.

Since a plurality of ignition means is provided, the reliability of the ignition is improved by this redundant provision of the ignition means.

Furthermore, it is achieved that such an active body has an all-round irritation result immediately after being ejected (e.g. from an aircraft) and incoming missiles can be reliably repelled.

In addition, the active body according to the invention, in particular due to the simultaneous ignitability of the at least one active mass on multiple sides, achieves lower scattering behavior and improved reactivity in use. In addition, there is a better development of the effect of the active body.

In an advantageous development of the invention, it can be provided that several, preferably each, of the active masses of the active body can be ignited on multiple sides at the same time.

The at least two active masses can be the same size and/or different sizes. By using a large number of different active substances, it is possible to adjust the wavelength of the spectrum emitted by the active body during the burning of the active substances.

In an advantageous development, the active body has at least two active compounds and the ignition means are arranged between the active compounds of the active body in such a way that the at least two active compounds can be ignited on multiple sides at the same time.

This ensures that each of the active masses of the active body is ignited reliably and simultaneously and that an all-round good irritation result is achieved by the active body.

Furthermore, it can advantageously be provided that the ignition means are arranged inside and/or outside of the active body.

Furthermore, it can be provided that the pyrotechnic set of ignition means and the at least one active mass are separated from one another by an inert material.

This achieves a defined separation of the at least one active mass from the pyrotechnic composition of the igniter. This prevents chemical influences between the active substance and the pyrotechnic composition when storing the active body. Furthermore, this prevents unwanted ignition. This also ensures that a defined ignition energy is required to ignite the body.

In an embodiment it can further be provided that the at least one active mass and/or the ignition means are separated from one another by a film, a housing or an air gap. The individual active substances can preferably be separated from one another in this way.

Such physical separation can occur, for example, using a film or a housing made of paper, plastic or metal.

In addition, it can be provided that the active body has grooves, grooves and/or bores. The channels run in the grooves, grooves and/or holes. The individual active compounds are preferably separated by these grooves and/or grooves. However, it is also possible for the grooves, grooves and/or holes to extend within an active mass.

By providing grooves, grooves and/or bores, on the one hand the positioning of the channels is specified and on the other hand it is ensured that the channels do not protrude or only protrude slightly beyond the contour of the active body.

In a further development, it can be provided that the grooves and/or grooves run in such a way that they cross each other at several crossing points and the ignition means are formed in the crossing points.

By providing such crossing points, it is achieved that several active masses, for example four or eight, are provided at a distance from one another at a crossing point and thus a plurality of active masses can be ignited at one point by an igniter.

Furthermore, it can be provided that the grooves, grooves and/or bores are arranged inside and/or outside the active body.

In addition, it can be provided that the active body is protected from environmental influences by a film or a housing. This ensures that the active body can be reliably ignited even at high wind and/or ejection speeds - for example when fired from a fast-flying aircraft or aircraft.

Furthermore, according to the invention it can be provided that the active body does not have a pyrotechnic coating set that covers the entire active body. Such a coating set is a fast-burning set that contains the active body covers and allows ignition from all sides. This has the advantage that the active body can be approved even if there is no suitable approved coating set.

It can be provided that the ignition means are arranged in such a way and the length of the channels is designed such that the ignition means can be ignited at the same time.

Furthermore, it can be provided that the ignition means are connected to an ignition initiator via the channels.

In an embodiment of the method, it can also be provided that several active masses of the active body are ignited on multiple sides at the same time.

In an advantageous further development, it can further be provided that the active body is essentially cuboid-shaped and has essentially cuboid-shaped active masses. This can in particular be an active body for ammunition in the NATO standard caliber 2x1x8" or 1x1x8".

It can also be a cylindrical active body, preferably with a diameter of 36mm or 55mm.

It is also possible that it is a spherical or triangular active body.

The invention will be explained below using an exemplary embodiment with reference to the drawings.

Fig. 1

eine schematische perspektivische Ansicht eines erfindungsgemäßen Wirkkörpers mit Kanälen gemäß einem ersten Ausführungsbeispiel;

Fig. 2

eine schematische perspektivische Ansicht des erfindungsgemäßen Wirkkörpers gemäß den ersten Ausführungsbeispiel aus Fig. 1, wobei die Kanäle ausgeblendet sind;

Fig. 3

eine schematische perspektivische Ansicht eines erfindungsgemäßen Wirkkörpers gemäß einem zweiten Ausführungsbeispiel, wobei der Wirkkörper innenliegende Kanäle ausweist;

Fig. 4

eine schematische perspektivische Ansicht eines erfindungsgemäßen Wirkkörpers gemäß einem dritten Ausführungsbeispiel, wobei der Wirkkörper innenliegende symmetrische und unsymmetrische Kanäle ausweist.

Show it:

Fig. 1

a schematic perspective view of an active body according to the invention with channels according to a first exemplary embodiment;

Fig. 2

a schematic perspective view of the active body according to the invention according to the first exemplary embodiment Fig. 1 , with the channels hidden;

Fig. 3

a schematic perspective view of an active body according to the invention according to a second exemplary embodiment, wherein the active body has internal channels;

Fig. 4

a schematic perspective view of an active body according to the invention according to a third exemplary embodiment, wherein the active body has internal symmetrical and asymmetrical channels.

Fig. 1 shows a schematic perspective view of an active body 1 according to the invention. The active body 1 comprises a plurality of active compounds 10 _1...n and a plurality of igniters 20 _1...n . The ignition means 20 _1...n each comprises a pyrotechnic set for igniting the active masses 10 _1...n .

Fig. 2 also shows a schematic perspective view of the active body according to the invention Fig.1 , where channels 30 _1...n are hidden.

The igniting means 20 _1...n are arranged between the individual active masses 10 _1...n and the igniting means 20 _1...n are connected to one another via channels 30 _1...n in such a way that the active body 1 can be ignited on multiple sides at the same time is.

The ignition means 20 _1...n are connected to an ignition initiator (not shown) via the channels 30 _1...n , the ignition means 20 ₁ ... _n being arranged in such a way and the length of the channels 30 _1...n is designed such that the ignition means 20 _1...n can be ignited at the same time.

How out Fig. 2 As can be seen, the active body 1 has grooves and/or grooves 22 _1...n , through which the individual active masses 10 _1...n are separated from one another. The grooves and/or grooves 25 _1...n are according to the first exemplary embodiment Fig. 1 and 2 arranged inside the active body 1 and/or outside, i.e. on the outside.

The grooves and/or grooves 22 _1...n run in such a way that they intersect at several intersection points 25 _1...n and the ignition means 20 _1...n are arranged in the intersection points 25 _1...n .

Take the grooves and/or grooves 22 _1...n , as in Fig. 1 shown, the channels 30 _1...n , ie the channels 30 _1...n are arranged in the grooves and/or grooves.

The individual channels 30 _1...n are designed like a bead.

The individual active masses 10 _1...n of the active body 1 can be ignited on multiple sides at the same time.

The ignition means 20 _1...n are arranged inside/outside the active body 1 according to the exemplary embodiment. For this purpose, these are provided in the grooves/grooves of the active body 1.

The pyrotechnic set of igniting agents 20 _1...n and the active masses 10 _1...n are separated from one another by an inert material. This can be designed, for example, as a film, a housing or an air gap.

According to Fig. 3 is a schematic perspective view of an active body 1 according to the invention according to a second exemplary embodiment, which is based on the exemplary embodiment according to the Fig.1 based and the differences are shown below. The active body 1 has internal grooves, grooves and/or bores 23 _1...n , in which channels 31 _1...n are formed. The channels 31 _1...n are formed within the individual active masses 10 _1...n and have a symmetrical image.

According to Fig. 4 is a schematic perspective view of an active body 1 according to the invention according to a third exemplary embodiment, which is based on the exemplary embodiment according to Fig. 3 based. In contrast to the exemplary embodiment Fig. 3 the internal channels 31 _1...n are formed into symmetrical and/or asymmetrical channels 31 1...n within the individual active masses 10 _{1... n} .

According to the in the Fig. 1 to 4 The embodiment shown is an active body 1, which comprises eight active masses 10 _1...8 and six igniters 20 _1...6 . The active body 1 is essentially cuboid-shaped and comprises essentially cuboid-shaped active masses 10 _1...8 . This can in particular be an active body for ammunition in the NATO standard caliber 2×1×8" or 1×1×8". However, this embodiment of the above exemplary embodiment only represents an exemplary embodiment. However, a number other than eight active masses and six igniters are also possible. It can also be a cylindrical active body, preferably with a diameter of 36mm or 55mm. It is also possible that it is a spherical or triangular active body.

Reference symbol list

1

active body

101...n

Active masses

201...n

igniters

221...n

Grooves, grooves and/or holes (internal)

231...n

Grooves, grooves and/or holes (external)

251...n

Crossing points (internal)

261...n

Crossing points (external)

301...n

Channels (internal)

311...n

Channels (external)

Claims (14)

1. Active element (1), in particular a decoy active element, comprising

   at least one active substance (10_1...n),

   at least two ignition means (20_1...n), each comprising a pyrotechnic composition for igniting the active substances (10_1...n),

   characterized in that

   the at least two ignition means (20_1...n) are arranged on the at least one active substance (10_1...n) and the at least two ignition means (20_1...n) are connected to one another via channels (30_1...n, 31_1...n) in such a way that the at least one active substance (10_1...n) can be ignited simultaneously from a plurality of sides.
2. Active element (1) according to claim 1, characterized in that the active element (1) comprises at least two active substances (10_1...n) and the ignition means (20_1...n) are arranged between the active substances (10_1...n) of the active element (1) in such a way that the at least two active substances (10_1...n) can be ignited simultaneously from a plurality of sides.
3. Active element (1) according to claim 1 or claim 2, characterized in that the at least two ignition means (20_1...n) are arranged inside and/or outside the active element (1).
4. Active element (1) according to any of the preceding claims, characterized in that the pyrotechnic composition of each ignition means (20_1...n) and the at least one active substance (10) are separated from one another by an inert material.
5. Active element (1) according to claim 4, characterized in that the at least one active substance and/or the ignition means (20_1...n) are separated from one another by a film, a housing and/or an air gap.
6. Active element (1) according to any of the preceding claims, characterized in that the active element (1) has grooves, slots and/or bores (22_1...n, 23_1...n) by means of which the individual active substances (10_1...n) are separated and in which the channels (30_1...n, 31_1...n) extend.
7. Active element (1) according to any of the preceding claims, characterized in that the at least one active substance (10_1...n) has grooves, slots and/or bores (22_1...n, 23_1...n) in which the channels (30_1...n, 3_1...n) extend.
8. Active element (1) according to claim 6, characterized in that the grooves, slots and/or bores (22_1...n, 23_1...n) extend in such a way that they intersect at a plurality of intersection points (25_1...n, 26_1...n) and the ignition means (20_1...n) are formed at the intersection points (25_1...n, 26_1...n).
9. Active element (1) according to any of the preceding claims, characterized in that the grooves, slots and/or bores (22_1...n, 23_1...n) are arranged inside and/or outside the active element (1).
10. Active element (1) according to any of the preceding claims, characterized in that the active element (1) is protected from environmental influences by an inert film or a housing.
11. Active element (1) according to any of the preceding claims, characterized in that the active element (1) does not have a pyrotechnic coating composition which coats the entire active element (1).
12. Active element (1) according to any of the preceding claims, characterized in that the length of the channels (30_1...n, 31_1...n) is formed in such a way that the ignition means (20_1...n) can be ignited simultaneously.
13. Method for igniting an active element (1), in particular according to any of claims 1 to 12, comprising

    at least one active substance (10_1...n),

    at least two ignition means (20_1...n), each comprising a pyrotechnic composition for igniting the active substances (10_1...n),

    characterized in that

    the at least two ignition means (20_1...n) are arranged on the at least one active substance (10_1...n) and the at least two ignition means (20_1...n) are connected to one another via channels (30_1...n, 31_1...n) in such a way that the at least one active substance (10_1...n) can be ignited simultaneously from a plurality of sides.
14. Method for igniting an active element (1) according to claim 13, characterized in that a plurality of active substances (10_1...n) of the active element (1) are ignited simultaneously from a plurality of sides.

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