DK3044535T3

DK3044535T3 - Building kit and method for making a destruction charge containing a hole charge

Info

Publication number: DK3044535T3
Application number: DK14757867.8T
Authority: DK
Inventors: Bernd Michael Bippes
Original assignee: Rheinmetall Waffe Munition Gmbh
Priority date: 2013-09-13
Filing date: 2014-08-15
Publication date: 2018-02-26
Also published as: EP3044535B1; NO2975683T3; PL3044535T3; DE102013015255B3; WO2015036201A1; EP3044535A1

Description

CONSTRUCTION KIT AND METHOD FOR PRODUCING A DESTRUCTIVE CHARGE CONTAINING A HOLLOW CHARGE

DESCRIPTION

[0001] The invention relates to a construction kit for producing a destructive charge containing a hollow charge for contactless bomb disposal. The invention further relates to a method for producing a destructive charge using such a construction kit.

[0002] Known from DE 36 23 240 Cl is a destructive charge for contactless bomb disposal (EOD = explosive ordnance disposal) by means of a hollow charge. In this case, the penetration capacity of the hollow charge is selected in such a manner that it certainly penetrates the casing of the munition to be defused but no longer causes the munition to detonate its explosive charge. As a result, a relatively safe disposal of the munition can be accomplished by removal of the explosive charge or by burning it off.

[0003] It is further mentioned in DE 36 23 240 Cl to only perform a precise metering of its plastic explosive on site in order to set the desired penetration capacity of the hollow charge. However no information can be deduced from this document as to how such a destructive charge is constructed so that the metering of the explosive can take place on site. It is also mentioned in DE 36 23 240 Cl that during the metering of the explosive on site, inhomogeneities such as bubbles are obtained in the explosive filling which in practice make a precise setting of the penetration capacity almost impossible.

[0004] Finally it is known from EP 1 095 238 B1 to configure the hollow charge insert of the destructive charge as a projectile-forming charge wherein the insert should consist of a non-galvanically conducting amorphous material.

[0005] A disadvantage with the known ready-assembled destructive charges inter aha is that a high logistics expenditure is associated with the storage and transport thereof and a high monitoring expenditure is incurred in view of a possible going astray.

[0006] DE 603 18 298 T2 which forms the starting point for the invention discloses a device for destroying explosives. The plastic destruction mechanism consists of a cylinder which is provided with an axial tube which serves to hold the initiating means. During the loading process the detonator (initiating means) can be occupied by a dummy detonator. The loading process consists of filling a cavity in the destruction mechanism with a measured quantity of plastic explosive, which cavity extends from the end of the dummy detonator as far as the rear wall of the hollow charge insert. If the maximum quantity of explosive is used, the front edge of the hollow charge ring is arranged in the same plane or protruding several millimetres from the edge of the destruction mechanism. The hollow charge insert and the explosive are held by a consolidation ring provided with a thread which is screwed onto the destruction mechanism. If less explosive is used, at least one spacer ring should be incorporated between the inner web of the consolidation ring and the hollow charge insert. The filling with explosive material takes place in such a manner that this is input into the body from the open side and compressed, conventionally by manual tamping, is then further compressed by the consolidation ring which acts on the front surface of the hollow charge insert. In another filling process, end stops are incorporated against which the consolidation ring and any spacer rings must strike.

[0007] It is the object of the invention to substantially reduce the logistics and securing expenditure for destructive charges.

[0008] This object is solved according to the invention whereby the destructive charge is not held in readiness as a ready-assembled charge, i.e. stored and transported, but that all non-safety-relevant components such as the preferably tubular housing element of the destructive charge, the hollow charge insert and the cap provided for receiving the electrical detonator are stored separately and transported as a construction kit. The destructive charge is then only assembled on site if the authorized blaster in explosive ordnance disposal deployments considers its use necessary for the contact-free explosion of munitions etc. The mouldable explosive usually present in any case in explosive ordnance disposal deployments such as, for example PETN (nitropenta), semtex (tradename for a nitropenta and hexogen mixture made by the Czech company Synthesia), C-4 (composition consisting of 91% hexogen, 5.3% polyisobutylene + softener) etc. can be used as explosive for the hollow charge. Electrical detonators which are usually provided and specifically U detonators (insensitive) or HU detonators (highly insensitive) are used as detonators.

[0009] By using a construction kit according to the invention, the logistics and securing expenditures for the corresponding destructive charges is reduced substantially since the individual parts of the construction kit do not require authorization and monitoring. Furthermore no shelf-life times need be observed.

[0010] In order to ensure that the penetration capacity of the destructive charge after its assembly is as reproducible as possible, the cap provided to receive the detonator and a loading aid also assigned to the construction kit is configured in such a manner that during assembly of the destructive charge, on the one hand the axial position of the hollow charge insert can be positioned exactly and that on the other hand pressure can be applied to the mouldable explosive which is sufficient so that after the pressing process the explosive rests in a form-fitting manner against the wall regions of the tubular housing element, the hollow charge insert and the cap so that bubbles in the explosive and air inclusions between the explosive and the adjoining part are reliably avoided.

[0011] For this purpose the loading aid comprises a base part and a preferably cylindrical upper part which adjoins the base part on the upper side, the front region of which, facing away from the base part, is preferably conical and corresponds at least partially to the inner peripheral contour of the insert. The upper part of the loading aid can be inserted through the opening in the second end face into the tubular housing element and there serves as a counter bearing during the pressing process of the explosive and for fixing the distance of the hollow charge insert from the second end face of the tubular housing element.

[0012] It has proved advantageous if the tubular housing element of the construction kit comprises fibreboard so that during insertion of the destructive charge no significant lateral splintering effect occurs and the danger area during insertion of the destructive charge is smaller than with comparable known destructive charges.

[0013] The hollow charge insert can comprise a metal, preferably copper. However, if a metal-free destructive charge must be used to dispose of electronic weapons, in order to prevent any influence on the weapons by the insert metal, the hollow charge insert can consist of a non-metal, preferably glass.

[0014] It has furthermore proved expedient if the construction kit comprises wires for the contact-free explosion of weapons by means of which - if necessary - spacers (for example, a tripod) can be formed which are then attached to the housing element of the ready-assembled destructive charge.

[0015] For assembly of the destructive charge with the aid of the construction kit according to the invention, the base part of the loading aid is firstly positioned on a fixed base. Then the hollow charge insert of the construction kit is forced with the front region of the upper part through the opening in the second end face of the tubular housing element into the position predetermined by the minimum distance (standoff) of the hollow charge insert in relation to the bomb intended for disposal. The explosive provided is then preformed and introduced through the opening in the first end face into the preferably tubular housing element. The cap with its lower part formed as a pressing ram is pressed against the explosive and then the electrical detonator formed as a U or HU detonator is inserted into the axial bore of the cap.

[0016] It has proved to be advantageous if the pressing pressure exerted on the explosive is selected in such a manner that the explosive rises up 1 to 2 mm in the axial bore of the cap so that a safe detonation of the explosive by the detonator is ensured.

[0017] Alternatively a loading cartridge can be used which can at the same time serve as transport means for the further parts of the construction kit.

[0018] Further details and advantages of the invention are obtained from the following exemplary embodiments which are explained with reference to figures. In the figures:

Fig. 1 shows a construction kit consisting of a tubular housing element, a hollow charge insert, a cap and a loading aid,

Fig. 2 shows a destructive charge shown partially in longitudinal section which was assembled from the construction kit according to Fig. 1 and a mouldable explosive and an electrical detonator on site and

Fig. 3 shows a destructive charge with a spacer formed from three wires,

Fig. 4 shows a transport view of the construction kit,

Fig. 5 shows a view of a loading cartridge.

[0019] In Fig. 1 a construction kit for producing a destructive charge containing a hollow charge is designated with 1. The construction kit 1 comprises a preferably tubular housing element 2 made of fibreboard with a first end face 3 and a second end face 4. In addition, the construction kit 1 comprises a conical hollow charge insert 5 adapted to the tubular housing element 2 preferably made of copper and a cap 6 serving as a detonator receptacle. The cap 6 contains an axial bore 60 for receiving an electrical detonator and has a lower part 61 which is configured as a pressing ram. In addition, the construction kit 1 is assigned a loading aid 7 which comprises a base part 8 and an upper part 9 adjoining the base part 8, the front region 10 of which facing away from the base part 8 is configured to be conical and corresponds at least partially to the inner conical peripheral contour of the hollow charge insert 3. The upper part 9 is matched in its shape to the shape of the housing element 2. If the housing element 2 is tubular, the upper part 9 is cylindrical etc.

[0020] If a destructive charge 100 is now to be produced on site from the construction kit 1 and an available mouldable explosive as well as a detonator, the base part 8 of the loading aid 7 can firstly be positioned on a fixed base 11 (Fig. 2).

[0021] Then the hollow charge insert 5 is forced with the front region 10 of the upper part 9 through the opening in the second end face 4 of the housing element 2 into the position predetermined by the minimum distance (standoff) of the hollow charge insert 5 in relation to the bomb intended for disposal.

[0022] The explosive is then preformed and the preformed explosive 12 is introduced through the opening in the first end face 3 into the housing element 2.

[0023] The cap 6 with its lower part 61 formed as a pressing ram is then pressed against the explosive 12 in such a manner that the pressing pressure exerted by the cap 6 on the explosive is sufficient to press the explosive 1 to 2 mm into the axial bore 60 of the cap 6.

[0024] Then a suitable detonator (U or HU detonator) 13 is inserted into the axial bore 60 of the cap 6.

[0025] Since during the contact-free disposal of bombs with a hollow charge, it should be noted that a certain minimum spacing (standoff) must be provided with respect to the bomb, it is frequently necessary that the destructive charge 100 is fastened to a corresponding spacer in front of the bomb intended for disposal.

[0026] Such a spacer 15 formed from wires 14 is shown in Fig. 3 together with the ready-assembled destructive charge 100.

[0027] Fig. 4a shows the construction kit 1 with its housing or housing element 2 in the transport position. The diagram in Fig. 4b is a sectional view in the section A-A from Fig. 4a. The explosive is clearly absent here.

[0028] Fig. 5 shows a loading cartridge 20. The loading cartridge 20 comprises a housing 21 into which the housing element 2 of the construction kit 1 ’ can be inserted. A cardboard roll 2’ or the like can also be used for length compensation between the dimensions of the housing 21 and the housing element 2 of the construction kit 1 ’. The housing 21 of the loading cartridge 20 can be closed by two covers 22, 23. A conical ram 24 is incorporated in the lower cover 23, which points in the direction of the housing element 2 when closing the opening 25, 26. The ram 24 for its part is introduced adjustably in the cover 23 and can be secured in its end position by means of nuts 27, 28, but at least one. A counter holder 29 is integrated in the upper cover 22, which during production of the destructive charge containing a hollow charge also extends into the housing element 2 of the construction kit Γ. The pressing ram 61 forming the explosive large 12 engages in or acts on the counter holder 29. The counter holder 29 has a feed-through or axial bore 30 and is also secured by means of nuts 31, 32, but at least one. Alternatives to the securing with a nut can be a splint etc. as also for the ram. These are sufficiently known to the person skilled in the art.

[0029] The individual steps for production can proceed similarly as described for the loading aid 7. The cover 23 can thus be screwed or located onto the housing 21. With the aid of the ram 24 contained in the cover 23, the previously inserted hollow charge insert 5 is pressed into the housing element 2 into the predetermined position, and the ram 24 secured. The preformed explosive 12 can preferably be introduced through the upper opening 25 of the loading cartridge 20 and the first end face 3 into the housing element 2. After introducing the explosive 12 into the housing element 2, the ram 24 also serves here to press this positively onto the wall regions of the adjoining housing element 2, the hollow charge insert 5 and the underside of the lower part 61. By closing the upper cover 22, the counter holder 29 acts on the lower part 61 and centres this. The counter holder 29 can be omitted if the lower part 61 can be connected directly to the cover 22. The suitable detonator (U or HU detonator) 13 is introduced through a feed-through or axial bore 30 in the counter holder 29 or in the cover 22. The destructive charge obtained in this way can also be introduced into a spacer 15 according to Fig. 3.

[0030] Alternatively the production or introduction of the individual parts of the construction kit 1 ’ can be accomplished only through one of the openings 25, 26.

Reference list [0031] 1,1’ Construction kit 2, 2’ Housing element 3 First end face 4 Second end face 5 Hollow charge insert 6 Cap 60 Axial bore 61 Lower part 7 Loading aid 8 Base part 9 Upper part 10 Front region 11 Base 12 Explosive 13 Detonator 14 Wire 15 Spacer 20 Loading cartridge 21 Housing 22, 23 Cover 24 Ram 25, 26 Housing openings 27,28 Nuts 29 Counter holder 30, 30’ Axial bore 31, 32 Nuts 100 destructive charge

Claims

A kit (1) for producing a destructive charge (100) containing a hole charge for annihilation of combat means, comprising: • a tubular housing member (2) with two open front sides (3, 4), wherein the hole charge comprising of a hole loading insert (5) and an explosive (12) may be inserted, the explosive (12) being malleable, • a hole loading insert (5) preferably conical or ball-shaped, • a cap (6) for closing it against the explosive (12) faces an opening in the first front side (3) of the housing element (2), wherein the sheath (6) contains an axial bore (60) for receiving an electric detonator (13) and on its underside, which faces the explosive in its mounted state (12) comprises a lower part (61) configured as a plunger; • a loading aid (7) comprising a base part (8) and an upper part (9) adjacent thereto, and the front area (10) of which away from the base part (8), are cone-shaped or ball-shaped and at least partially shaped articles for the inner edge contour of the hole charge insert (5), wherein the top of the hole charge insert (5) can be inserted into the housing element (2) through the opening in the second front side (4) to serve as a control bearing in a pressing process for the explosive (12), the explosive (12) ) after the pressing process, the molding abuts against the wall regions of the tubular housing element (2), the hole loading insert (5) and the casing (6).

A kit (1 ') for producing a destructive charge (100) containing a hole charge for annihilating combat means, comprising: • a tubular housing member (2) with two open front sides (3, 4), wherein the hole charge which consisting of a hole loading insert (5) and an explosive (12) may be inserted, the explosive (12) being malleable, • a hole loading insert (5) preferably conical or ball-shaped, • a charging die (20) for accommodating the housing element (2), the explosive (12) and the hole loading insert (5), wherein the charge matrix (20) comprises a housing (21) which has two openings (25, 26), each of which can be closed by a cover (22, 23). • a cone or ball-shaped piston (24) is integrated into the lower cover (23) which corresponds at least partially to the inner edge contour of the hole loading insert (5) and is pressed into the housing (2) with the hole loading insert (5) to serve as control bearing by a pressing process for the explosive (12); • the upper cover (22 ) exhibits an axial bore (30) and cooperates with a bottom member (61) which is configured as a piston and comprises an axial bore (60), wherein these bores (30, 60) receive an electric detonator (13), the explosive ( 12) after the pressing process, the molding abuts against the wall regions of the tubular housing element (2), the hole loading insert (5) and the lower part (61).

Construction kit (1) according to claim 1, characterized in that the upper part (9) serves as a control bearing in the pressing process of the explosive (12) and for determining the distance of the hole loading insert (5) from the other front side (4) of the upper part (9).

Construction kit (1, 1 ') according to one of claims 1 to 3, characterized in that the cardboard material (2) is hard cardboard.

Construction kit (1, Γ) according to one of Claims 1 to 4, characterized in that it is copper or glass at the hole loading insert (5).

Building kit (1, Γ) according to one of claims 1 to 5, characterized in that the electrical detonator (13) is a U or HU detonator.

Building set (1, 1 ') according to one of claims 1 to 6, characterized in that the building set (1, 1') comprises several wires (14) with which a spacer (15) can be assembled.

Building kit (1, Γ) according to any one of claims 1 to 7 for contactless destruction of combat equipment.

A kit (1, Γ) according to any one of claims 1 to 8 for producing an on-site destruction charge.

A method for mounting a destructive charge (100) by means of a kit (1) as claimed in claims 1, 3 to 9, characterized in: a) first positioning the base part (8) of the charging auxiliary (7) on a solid surface (11); b) subsequently, the hole loading insert (5) is pressed with the front area (10) of the upper part (9) through the opening in the second front side (4) of the housing element (2) to the position predetermined by the minimum distance (stand off) of the combat means which must be destroyed; c) then introduces the preformed explosive (12) and then the sheath (6) serving as detonator holder through the opening in the first front side (3) into the housing member (2) and the lower part (61) of the sheath (6) is pressed against the explosive (12) such that the compressive pressure exerted by the sheath (6) on the explosive (12) is sufficient to press the explosive (12) formally against the wall regions of the housing element (2), the hole insert (5) and the sheath (6); d) finally, the electrical detonator (13) is inserted into the axial bore (60) of the sheath (6).

A method of mounting a destructive charge (100) by means of a building set (1 ') as claimed in claims 2, 4 to 9, characterized in: a) the housing element (2) is introduced into the housing (21) of the charging matrix (20), b) thereafter, by means of the piston (24), the hole loading insert (5) is pressed through the opening in the second front side (4) of the tubular housing member (2) to the position predetermined by the minimum stand-off distance (5) of the fighting means to be destroyed; c) then a preformed explosive (12) and then the detonator holder (61) is inserted through the opening (25) and thus through the opening in the first front side (3) into the housing element (2) and the lower part (61) is pressed against the explosive (12) by means of the upper cover (22) such that the pressing pressure exerted by the lower part (61) on the explosive (12) is sufficient to press the explosive (12) formally against the wall regions of the housing element (2), the hole insert ( 5) and the lower part (61); d) finally, the electrical detonator (13) is inserted into the axial bore (30, 60).

Method according to claim 10 or 11, characterized in that the pressing pressure exerted by the lower part (61) of the sheath (6) on the explosive (12) is selected such that the explosive (12) rises 1 mm to 2 mm up in the axial bore. (60) in the jacket (6) respectively. the lower part (61).