Inner casing, in particular for an irritant cartridge, comprising a plurality of submunitions

Abstract

The invention relates to an inner casing (14), comprising a housing (22), wherein • a cylindrical main submunition (23) or two semi-cylindrical main submunitions (23) are provided in a first layer (23a), the two semi-cylindrical main submunitions (23) together forming a complete cylindrical shape, and the main submunition (23) or the two main submunitions (23) substantially filling an end-face space of the housing (22), • a plurality of smaller submunitions (24) are provided in a second layer (24a) adjoining the first layer, each of the smaller submunitions (24) having a smaller volume than the main submunition or the individual main submunitions (23), and • the smaller submunitions (24) are positioned in such a way that the smaller submunitions at least partly fill the cross-section of the housing (22) but leave a central cavity (36) for the ignition process. The inner casing is characterized in that • the at least one main submunition (23) and / or the smaller submunitions (24) have an irritant / smoldering substance mixture.

Description

[0001] "A bombshell, especially for an irritant cartridge with multiple subbodies"

[0002] The invention relates to a bombette with a casing, wherein

[0003] • in a first layer, a cylindrical main subbody or two semi-cylindrical main subbodies are arranged, the two semi-cylindrical subbodies together forming a complete cylindrical shape, the main subbody or the two main subbodies filling an end space of the housing,

[0004] • in a second layer adjacent to the first, several smaller subbodies are arranged, each of which has a smaller volume than the individual main subbody(s), • the smaller subbodies are positioned so that they partially fill the cross-section of the casing, but leave a central cavity for ignition.

[0005] The generic designation GB 15 29 263 A discloses smoke ammunition. The smoke ammunition contains two disc-shaped smoke components within a bombette or casing, the smoke components being separated by a compressed layer of powder and an ignition transfer disc. On the upper side of the smoke components are further ignition transfer elements, layers of powder, a felt packing, and a choke disc. An electric fuze in a central hole ignites the powder layers and ignition transfer elements upon ignition, thereby simultaneously detonating both smoke components. The choke disc intensifies smoke production through its ejector function. A grenade combines a fast-acting layer of sub-components and a layer containing a main sub-component with a sustained-action effect within a single bombette. The slow-burning, sustained-action portion is formed by the main sub-component, which occupies one end of the bombette.Both layers consist of the same composition but differ in their function. The fast-acting layer consists of four smaller cylindrical subbodies surrounding a central detonator and is ignited simultaneously and instantly by a layer of reinforcing powder. The main, long-acting subbodie burns more slowly. Due to the larger combustion surface area in the fast-acting part, ignition is rapid and immediate, while the slow-burning part produces smoke for a longer period, even though both parts consist of the same composition. Known irritant cartridges essentially consist of a primer located in the base of the cartridge, an ignition element above it, and at least one more compressed irritant charge in the form of at least one subbodie above it. Such subbodies contain a pyrotechnic igniter and irritant. The irritant is contained in a smoldering charge. The subbodies are arranged in a bombette.The subbodies consist of a mixture of an igniter and a required amount of irritants such as chloroacetophenone (CN) or chlorobenzylidene malononitrile (CS). Upon combustion, i.e., after ignition by the spark plug, the smoldering charge heats the irritant and releases it in the form of irritant gas.

[0006] From DE 10 2020 004 562 A1, various designs of irritant cartridges with a caliber of 40 mm are known. The irritant cartridges comprise a cartridge case, a bombette, and several irritant sub-sub ...

[0007] The invention is therefore based on the objective of improving the bombette.

[0008] This problem underlying the invention is now solved by a bombette with the features of claim 1, namely a bombette with a housing, wherein

[0009] • in a first layer, a cylindrical main subbody or two semi-cylindrical main subbodies are arranged, the two semi-cylindrical subbodies together forming a complete cylindrical shape, the main subbody or the two main subbodies filling an end space of the housing,

[0010] • several smaller subbodies are arranged in a second layer adjacent to the first, each of which has a smaller volume than the individual main subbody(s), • the smaller subbodies are positioned so that they partially fill the cross-section of the casing, but leave a central cavity for ignition,

[0011] • which has at least one main subbody and / or the smaller subbodies containing an irritant smoldering agent.

[0012] At one end of the housing, for example the upper end face, there is an arrangement of at least one main subbody, wherein the arrangement fills at least 95%, and in particular completely, an end space of the housing. This arrangement can consist either of a single cylindrical main subbody that fits exactly into the housing, or of two semi-cylindrical bodies that together form a complete cylinder and together fit exactly into the housing. Below this first layer, in which the end space is filled, is a second layer of smaller subbodies. Each of the smaller subbodies has a volume smaller than half the volume of half the cylinder occupied by the one main subbody or the two main subbodies.

[0013] The axial length of the main subbody preferably corresponds to 75% to 125% of the diameter of the bombette. This results in a compact design of the main subbody with a long burning time.

[0014] By arranging the one or both main subbodies in the first layer, the installation space of the casing is optimally utilized. Furthermore, the flame path from the ignition mechanism to the main subbody is relatively short. The first layer is positioned at the front in the direction of ejection, resulting in a more stable trajectory for the bombette, as the weight is concentrated more towards the front of the bombette.

[0015] The second layer, consisting of smaller subbodies, ensures an even distribution of the ignition and simultaneously allows for a free central cavity, thus improving the ignition effect. The irritant in the main subbody and the smaller subbodies guarantees a targeted and controlled release of irritant gases, both rapidly through the smaller subbodies and over a longer period through the at least one main subbody.

[0016] In one embodiment, it is specified that an ignition element, in particular in the form of a gauze disc, is arranged or formed on an end face of the at least one main subbody facing the second layer. The ignition element on the end face facilitates the ignition of the subbodies.

[0017] In one embodiment, it is specified that the subbodies and / or the at least one main subbody have a sleeve open at one end, the sleeve preferably being made of aluminum or cardboard. Aluminum provides stability and temperature resistance, while cardboard can serve as a cost-effective and environmentally friendly alternative.

[0018] One embodiment specifies that the subbody and / or the at least one main subbody is / were manufactured by a pressing process. The pressing process ensures a compact and stable structure of the subbodies, which facilitates handling and storage.

[0019] One embodiment specifies that at least one pressed-in irritant smoldering mixture is arranged within the sleeve of the subbody and / or the at least one main subbody. A pressed-in irritant smoldering mixture guarantees a homogeneous distribution of the irritant, ensuring efficient and controlled ignition. The irritant smoldering mixture consists of an irritant component and a smoldering component as a homogeneous mixture. The smoldering component serves as the pyrotechnic heating element. After ignition, the smoldering component reacts in an exothermic reaction, thus generating heat and gases. The actual irritant (CS) is not burned or ignited, as this would cause it to decompose. The heat and the resulting gases cause the CS irritant to be emitted and dispersed into the air.

[0020] In one embodiment, it is specified that an ignition element is attached to the open side of the outer sleeve of the subbody and / or the at least one main subbody, the ignition element comprising black powder or igniting gauze. The ignition element on the open side ensures rapid and reliable ignition of the subbodies. The use of black powder or igniting gauze allows for flexible adjustment of the ignition speed and intensity.

[0021] In one embodiment, it is specified that the subbody and / or the at least one main subbody has an additional element for swirling and regulating the temperature of the escaping gases at the ignition device. This additional element ensures controlled swirling of the escaping gases, which increases the efficiency of irritant gas generation. It regulates the temperature and prevents overheating.

[0022] In one embodiment, it is specified that the subbody and / or the at least one main subbody has at least one intermediate component between the igniter and the irritant smoldering agent, wherein the brisance of the intermediate component lies between that of the smoldering agent and that of the igniter. The intermediate component enables staged ignition, thereby improving the ignition behavior. A smooth transition between the igniter and smoldering agent ensures a uniform release of energy.

[0023] The number of subbodies in the second layer is preferably between four and eight. This number allows for a balance between space filling and combustion rate.

[0024] The bombette is specifically designed for an irritant cartridge, with the main subbody and the smaller subbodies containing an irritant such as chloroacetophenone (CN) or chlorobenzylidene malononitrile (CS).

[0025] The invention relates to such an irritant cartridge with a bombette. The caliber of the irritant cartridge is preferably 40 mm.

[0026] There are now numerous possibilities for designing and further developing the bombette. Reference is first made to the claims subordinate to claim 1. A preferred embodiment of the invention is explained in more detail below with reference to the drawing and the accompanying description. In the drawing: Fig. 1 shows a schematic sectional view of an irritant cartridge with a bombette and a main subbody and several subbodies.

[0027] Fig. 2 shows a schematic sectional view of the bombette with a single cylindrical main subbody,

[0028] Fig. 3 shows a schematic top view of the cylindrical main subbody,

[0029] Fig. 4 shows a schematic sectional view of the bombette with two semi-cylindrical main subbodies.

[0030] Fig. 5 shows a schematic top view of the two semi-cylindrical main subbodies, and

[0031] Fig. 6 shows a schematic sectional view of one of the smaller subbodies.

[0032] Fig. 1 shows a schematic representation of an irritant cartridge 10. The irritant cartridge 10 includes, by way of example, a substantially cylindrical casing 12, a bombette 14, a propellant charge 16 for driving the bombette 14 out of the casing 12, a lid 18 that seals the upper opening of the casing 12 in a moisture-tight manner (as shown in Fig. 1), and in the base of the casing a primer 20 for igniting the propellant charge 16, as well as a seal 40 between the bombette 14 and the propellant charge 16.

[0033] The bombette 14 is shown separately in Fig. 2 and comprises a substantially cylindrical housing 22, at least one main subbody 23, several smaller subbodies 24, a lid 26, a delay charge 30, a hollow rivet 28 with an ignition charge 32, and an ejection charge 34 for ejecting the ignited subbodies 24 from the housing 22. The housing 22 is received substantially coaxially in the sleeve 12. The subbodies 24 are received in the housing 22. The lid 26 closes the upper opening of the housing 22 shown in Fig. 1. The ignition tube 28 extends substantially coaxially in the housing 22 from a lower end wall 22a of the housing 22. The propellant charge 16 is arranged between, on the one hand, the base of the sleeve and, on the other hand, the lower end wall 22a and the delay charge 30, and is adjacent to the primer cap 20. The delay charge 30 is arranged in a dome of the end wall 22a.The ignition charge 32 is arranged at the lower opening of the ignition tube 28 and on the delay charge 30. The ejection charge 34 is arranged on a lower end wall 22a of the housing 22 around the lower end of the ignition tube 28 or the hollow rivet 28.

[0034] To fire the cartridge 10, the primer 20 is ignited, for example, by means of a firing pin (not shown), which ignites the propellant charge 16. The ignited propellant charge 16 ignites the delay charge 30 and simultaneously pushes the bombette 14 in FIG. 1 upwards away from the base of the cartridge case, causing it to blow off the cap 18 and fly out of the cartridge case 12. The ignited delay charge 30 burns during its flight and ignites the primer charge 32, producing a flame that spreads upwards from below through the ignition tube 28 into a cavity 36 and initially ignites the main sub-body 23. The hollow rivet 28 directs the flame past the ignition side of the small sub-bodies 24, so that the main sub-body 23 is ignited first. The flame is then deflected towards ejection charge 34 and then ignites the small subbodies 24 and then the ejection charge 34.

[0035] In a first layer 23a, a cylindrical main subbody 23 (see Figs. 1 and 2) or two semi-cylindrical main subbodies 23 (see Figs. 4 and 5) are arranged in the first layer 23a, wherein the two semi-cylindrical subbodies 23 together form a complete cylinder, the main subbody 23 or the two main subbodies 23 substantially filling an end space of the housing. The outer circumference of the main subbody 23 is adapted to the inner circumference of the housing 22. The outer circumference of the at least one substantially cylindrical main subbody 23 preferably corresponds to 95% to 100% of the inner circumference of the housing 22.

[0036] In a second layer 24b, adjacent to the first, several smaller subbodies 24 are arranged, each of these smaller subbodies 24 having a smaller volume than the individual main subbody(s) 23. Preferably, four to eight subbodies 24 are arranged in the second layer 24b.

[0037] The smaller subbodies 24 are positioned so that they partially fill the cross-section of the casing 22, but leave a central cavity 36 open for ignition. The at least one main subbody 23 and / or the smaller subbodies 24 contain an irritant. Several smaller subbodies 24 are arranged in layer 24a within the bombette 14. The four subbodies 24 are arranged side by side within the casing 22.

[0038] The subbodies 24 are arranged relative to each other such that a central cavity 36 is formed. The hollow rivet 28 with the ignition charge 32 is located in the cavity 36. The flame of the ignition charge 32 burns through the cavity 36 to the first layer 23a containing the main subbody 23, igniting an ignition agent 38 there, preferably in the form of a gauze disc 38, and thus igniting the main subbody 23. The ignition agent 38 is formed by a gauze disc 38, which is preferably impregnated with black powder coating, ensuring effective reflection and recirculation of the ignition flame, thereby increasing the reliability of the ignition. The hollow rivet 28 directs the flame past the ignition side of the small subbodies 24, so that the main subbody 23 is ignited first. The flame is then deflected towards the ejection charge 34 and then ignites the small subbodies 24 and then the ejection charge 34.

[0039] In a preferred embodiment, a further gauze disc 42 is arranged on the ejection charge 34, which is finally ignited shortly before the ejection of the main subbody 23 and the subbody 24.

[0040] Figure 6 shows that the subbody 24 has a housing 50 in the form of a sleeve made of aluminum or cardboard. A low-bridging pyrolytic agent 52 is first filled into the housing 50. An intermediate layer 54 can be placed on top of this first layer. A third layer, an igniter 56, is then added. A swirling element, in particular a wire mesh 58, is placed on top of the third layer 56. The swirling element serves to swirl and cool the escaping irritant-pyrolytic agent mixture. This prevents the subbody 24 from burning with an open flame and the irritant from being incinerated instead of being released into the air. Reference numeral list:

[0041] 10 irritant cartridges

[0042] 12 sleeve

[0043] 14 Bombette

[0044] 16 propellant charge

[0045] 18 lids for 12

[0046] 20 firelighters

[0047] 22 cases

[0048] 22a Floor or lower end wall of 22

[0049] 23 Main subbody

[0050] 23a first layer

[0051] 24 subbodies

[0052] 24a second layer

[0053] 26 lids for 22

[0054] 28 Ignition tube or hollow rivet

[0055] 30 Delay charging

[0056] 32 ignition charges

[0057] 34 ejection charge

[0058] 36 cavity

[0059] 38 Ignition kit / gauze disc

[0060] 40 Sealing

[0061] 42 gauze disc

[0062] 50 housings in the form of a sleeve

[0063] 52 Smoldering salt

[0064] 54 Interlude

[0065] 56 ignition kit

[0066] 58 wire mesh

Claims

Patent claims:

1. Bombette (14), with a case (22), wherein • in a first layer (23a) a cylindrical main subbody (23) or two semi-cylindrical main subbodies (23) are arranged, wherein the two semi-cylindrical main subbodies (23) together form a complete cylindrical shape, wherein the main subbody (23) or the two main subbodies (23) substantially fill an end space of the housing (22), • in a second layer adjacent to the first layer (24a) several smaller subbodies (24) are arranged, each of which has a smaller volume than the individual main subbody(s) (23), • wherein the smaller subbodies (24) are positioned such that they partially fill the cross-section of the housing (22), but leave a central cavity (36) free for ignition, characterized by the fact that • which has at least one major subbody (23) and / or the smaller subbodies (24) containing an irritant smoldering set.

2. Bombette according to claim 1, characterized in that an ignition element (38) is arranged or formed on an end face of the at least one main subbody (23) facing the second layer (24a), in particular in the form of a gauze disc.

3. Bombette according to claim 1 or 2, characterized in that the first layer (23a) is arranged at the front in the direction of ejection.

4. Bombette according to one of the preceding claims, characterized in that the axial length of the main subbody (23) preferably corresponds to 75% to 125% of the diameter of the bombette.

5. Bombette according to one of the preceding claims, characterized in that an ignition element (56) is attached to the open side of a sleeve (50) of the subbody (24) and / or of the at least one main subbody (23), wherein the ignition element (56) comprises black powder or ignition gauze.

6. Bombette according to one of the preceding claims, characterized in that the subbody (24) and / or the at least one main subbody (23) have an additional element (58) for swirling and temperature regulation of the escaping gases at the ignition device (56).

7. Bombette according to one of the preceding claims, characterized in that the subbody (24) and / or the at least one main subbody (23) have a sleeve (50) open at one end, wherein the sleeve (50) is preferably made of aluminium or cardboard.

8. Bombette according to one of the preceding claims, characterized in that the subbody (24) and / or the at least one main subbody (23) has at least one intermediate (54) between the ignition composition (56) and the irritant smoldering composition, wherein the brisance of the intermediate (54) lies between the brisance of the smoldering composition (52) and the brisance of the ignition composition (56).

9. Bombette according to one of the preceding claims, characterized in that the number of subbodies (24) in the second layer is between four and eight.

Images