EP0527064B1 - Elément peu vulnérable de munition explosive comportant un chargement explosif bi-composition et procédé d'obtention d'un effet d'éclats - Google Patents
Elément peu vulnérable de munition explosive comportant un chargement explosif bi-composition et procédé d'obtention d'un effet d'éclats Download PDFInfo
- Publication number
- EP0527064B1 EP0527064B1 EP92401654A EP92401654A EP0527064B1 EP 0527064 B1 EP0527064 B1 EP 0527064B1 EP 92401654 A EP92401654 A EP 92401654A EP 92401654 A EP92401654 A EP 92401654A EP 0527064 B1 EP0527064 B1 EP 0527064B1
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- European Patent Office
- Prior art keywords
- explosive
- component according
- plastic
- forming
- peripheral layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000002360 explosive Substances 0.000 title claims description 139
- 239000000203 mixture Substances 0.000 title claims description 85
- 230000000694 effects Effects 0.000 title claims description 24
- 238000000034 method Methods 0.000 title claims description 7
- 230000035945 sensitivity Effects 0.000 title 1
- 239000002131 composite material Substances 0.000 claims description 74
- 230000002093 peripheral effect Effects 0.000 claims description 43
- 238000005474 detonation Methods 0.000 claims description 18
- 239000011159 matrix material Substances 0.000 claims description 17
- 229920000728 polyester Polymers 0.000 claims description 17
- 239000004814 polyurethane Substances 0.000 claims description 15
- 229920002635 polyurethane Polymers 0.000 claims description 15
- 239000007800 oxidant agent Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 239000000028 HMX Substances 0.000 claims description 9
- 239000000945 filler Substances 0.000 claims description 9
- UZGLIIJVICEWHF-UHFFFAOYSA-N octogen Chemical compound [O-][N+](=O)N1CN([N+]([O-])=O)CN([N+]([O-])=O)CN([N+]([O-])=O)C1 UZGLIIJVICEWHF-UHFFFAOYSA-N 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000004449 solid propellant Substances 0.000 claims description 8
- XTFIVUDBNACUBN-UHFFFAOYSA-N 1,3,5-trinitro-1,3,5-triazinane Chemical compound [O-][N+](=O)N1CN([N+]([O-])=O)CN([N+]([O-])=O)C1 XTFIVUDBNACUBN-UHFFFAOYSA-N 0.000 claims description 7
- NVKJOXRVEKMMHS-UHFFFAOYSA-N 5-nitro-1,2,4-triazol-3-one Chemical compound [O-][N+](=O)C1=NC(=O)N=N1 NVKJOXRVEKMMHS-UHFFFAOYSA-N 0.000 claims description 7
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 7
- GDDNTTHUKVNJRA-UHFFFAOYSA-N 3-bromo-3,3-difluoroprop-1-ene Chemical compound FC(F)(Br)C=C GDDNTTHUKVNJRA-UHFFFAOYSA-N 0.000 claims description 6
- MKWKGRNINWTHMC-UHFFFAOYSA-N 4,5,6-trinitrobenzene-1,2,3-triamine Chemical compound NC1=C(N)C([N+]([O-])=O)=C([N+]([O-])=O)C([N+]([O-])=O)=C1N MKWKGRNINWTHMC-UHFFFAOYSA-N 0.000 claims description 5
- AXZAYXJCENRGIM-UHFFFAOYSA-J dipotassium;tetrabromoplatinum(2-) Chemical compound [K+].[K+].[Br-].[Br-].[Br-].[Br-].[Pt+2] AXZAYXJCENRGIM-UHFFFAOYSA-J 0.000 claims description 5
- 229910001487 potassium perchlorate Inorganic materials 0.000 claims description 5
- IDCPFAYURAQKDZ-UHFFFAOYSA-N 1-nitroguanidine Chemical compound NC(=N)N[N+]([O-])=O IDCPFAYURAQKDZ-UHFFFAOYSA-N 0.000 claims description 4
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims description 4
- TZRXHJWUDPFEEY-UHFFFAOYSA-N Pentaerythritol Tetranitrate Chemical compound [O-][N+](=O)OCC(CO[N+]([O-])=O)(CO[N+]([O-])=O)CO[N+]([O-])=O TZRXHJWUDPFEEY-UHFFFAOYSA-N 0.000 claims description 3
- 239000004317 sodium nitrate Substances 0.000 claims description 3
- 235000010344 sodium nitrate Nutrition 0.000 claims description 3
- 230000009172 bursting Effects 0.000 claims 1
- 238000013467 fragmentation Methods 0.000 claims 1
- 238000006062 fragmentation reaction Methods 0.000 claims 1
- 206010041662 Splinter Diseases 0.000 description 17
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 15
- 239000003380 propellant Substances 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 13
- 239000007787 solid Substances 0.000 description 12
- 229920000642 polymer Polymers 0.000 description 11
- 229910052500 inorganic mineral Inorganic materials 0.000 description 8
- 239000011707 mineral Substances 0.000 description 8
- 230000001590 oxidative effect Effects 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000005062 Polybutadiene Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 229920002857 polybutadiene Polymers 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 3
- 230000037452 priming Effects 0.000 description 3
- -1 volume 1 Substances 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- AVUYXHYHTTVPRX-UHFFFAOYSA-N Tris(2-methyl-1-aziridinyl)phosphine oxide Chemical compound CC1CN1P(=O)(N1C(C1)C)N1C(C)C1 AVUYXHYHTTVPRX-UHFFFAOYSA-N 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- 239000005056 polyisocyanate Substances 0.000 description 2
- 229920001228 polyisocyanate Polymers 0.000 description 2
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- POCJOGNVFHPZNS-ZJUUUORDSA-N (6S,7R)-2-azaspiro[5.5]undecan-7-ol Chemical compound O[C@@H]1CCCC[C@]11CNCCC1 POCJOGNVFHPZNS-ZJUUUORDSA-N 0.000 description 1
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 1
- 239000005058 Isophorone diisocyanate Substances 0.000 description 1
- BSPUVYFGURDFHE-UHFFFAOYSA-N Nitramine Natural products CC1C(O)CCC2CCCNC12 BSPUVYFGURDFHE-UHFFFAOYSA-N 0.000 description 1
- 229920002873 Polyethylenimine Polymers 0.000 description 1
- 229920002367 Polyisobutene Polymers 0.000 description 1
- KXBFLNPZHXDQLV-UHFFFAOYSA-N [cyclohexyl(diisocyanato)methyl]cyclohexane Chemical compound C1CCCCC1C(N=C=O)(N=C=O)C1CCCCC1 KXBFLNPZHXDQLV-UHFFFAOYSA-N 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- UJEXUGLEYVZZEQ-UHFFFAOYSA-O azanium;sodium;dinitrate Chemical compound [NH4+].[Na+].[O-][N+]([O-])=O.[O-][N+]([O-])=O UJEXUGLEYVZZEQ-UHFFFAOYSA-O 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- KORSJDCBLAPZEQ-UHFFFAOYSA-N dicyclohexylmethane-4,4'-diisocyanate Chemical compound C1CC(N=C=O)CCC1CC1CCC(N=C=O)CC1 KORSJDCBLAPZEQ-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- POCJOGNVFHPZNS-UHFFFAOYSA-N isonitramine Natural products OC1CCCCC11CNCCC1 POCJOGNVFHPZNS-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
- F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
- F42B12/20—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type
- F42B12/207—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type characterised by the explosive material or the construction of the high explosive warhead, e.g. insensitive ammunition
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B45/00—Compositions or products which are defined by structure or arrangement of component of product
- C06B45/12—Compositions or products which are defined by structure or arrangement of component of product having contiguous layers or zones
Definitions
- the present invention is in the field of ammunition, in particular military, attenuated risks. It relates to a slightly vulnerable element of explosive ammunition consisting of a generally metallic envelope containing an explosive charge. This ammunition is particularly useful for generating a splinter effect by rupture of the envelope.
- the load and its envelope generally have an axial symmetry so as to generate symmetrical effects. Explosive ordnance, in particular during its storage or transport, can be subjected to attacks such as fire, impact and the penetration of fragments or bullets, detonation close to neighboring munitions.
- composite explosive is understood to mean a functionally detonable pyrotechnic composition, consisting of a solid polymer matrix, generally polyurethane or polyester, charged, the said charge being pulverulent and containing an organic nitro explosive charge, for example hexogen, octogen, ONTA, or a mixture of at least two of these compounds.
- Patent application FR-A-2 365 774 describes an approximately cylindrical element of explosive ordnance consisting of an envelope containing a multi-composition charge which may be a composite explosive.
- This multi-composition charge comprises a plurality of adjacent coaxial annular layers, the peripheral layer having a content of powerful heavy explosive (hexogen, octogen) higher than that of the layer which is immediately adjacent to it and thus step by step up to the layer central axial which is full cylindrical and has the lowest content of heavy heavy explosive.
- hexogen, octogen powerful heavy explosive
- a person skilled in the art is therefore looking for an improvement relating to this element of ammunition comprising a bi-composition charge, which allows, while maintaining the same level of invulnerability, to increase the effect of splinters.
- the present invention provides such a solution.
- the Applicant has found, unexpectedly, that if the interface between the two compositions, according to a cross section relating to the axis of the loading, is in the form of a star, instead of being circular as according to l state of the art, there was a gain, sometimes very large, in effect of splinters, and that, according to certain variants, which is even more surprising, the level of splinter effect achieved was equal to that obtained with an element of ammunition of the same dimension only responsible for the high-performance sensitive central explosive. This starred configuration does not affect the invulnerability which is maintained, while the level of the splinter effect is improved, and that, according to certain variants, everything happens even as if the load were completely constituted high-performance central explosive.
- This variant of the invention is all the more interesting as it allows, compared to the bi-composition element in composite explosive of the state of the art mentioned above in the article "Insensitive ammunition", both to lower vulnerability and increase the splinter effect.
- the state of the art also comprises, according to Article 54 (3) of the EPC, patent application EP 481 838.
- This application describes an element of explosive ordnance consisting of an envelope containing an explosive multicomposition charge, the layer of which the most internal is a composite explosive, the peripheral layer of which is a pyrotechnic composition from the family of solid composite propellants. The blast and / or bubble effect produced is close to that produced by the much more vulnerable charge in massively equivalent monocomposite composite explosive.
- the present invention therefore relates to an element of explosive ammunition consisting of a preferably metallic envelope but which may be made of another material, for example a rigid plastic, containing a dual-composition explosive charge consisting of an internal layer of composite explosive coated with an adjacent peripheral coaxial layer in pyrotechnic composition less sensitive than the composite explosive constituting the internal layer.
- the composite explosive constituting the internal layer is a polymer matrix, preferably polyurethane or polyester, charged, the charge of which contains at least one organic nitro explosive, preferably more than 20% by weight of organic nitro explosive, percentage expressed relative to the composite explosive.
- organic nitro explosive means an explosive chosen from the group consisting of aromatic nitro explosives ( comprising at least one C-No2 group, the carbon atom being part of a ring aromatic), nitric ester explosives (comprising at least one C - O - NO2 group) and nitramine explosives (comprising at least one CN-NO2 group).
- the term "less sensitive" pyrotechnic composition is understood to mean that the composite explosive constituting the inner layer, a pyrotechnic composition having a detonation ability index (IAD) according to the detonation ability test behind the barrier (Card Gap Test) lower than that of the composite explosive constituting the internal layer.
- IAD detonation ability index
- Card Gap Test Card Gap Test
- the internal and peripheral layers of the load are preferably cylindrical. They may not be strictly coaxial if we want to create an asymmetry in the effects of splinters. Interest is however very limited.
- the internal layer / external layer mass ratio is between 0.1 and 2.
- the internal layer of composite explosive is preferably full, but it can also have one or more recesses, for example an axial recess, partial or over the entire length of the load. Such a recess can for example accommodate the priming system.
- the polymer matrices of the inner and peripheral layers are polyurethanes generally obtained by reaction of a prepolymer with hydroxyl endings with a polyisocyanate.
- prepolymers with hydroxyl endings mention may be made of those whose backbone is a polyisobutylene, a polybutadiene, a polyether, a polyester, a polysiloxane.
- polybutadiene with hydroxyl end groups is used.
- polyisocyanates examples include isophorone diisocyanate (IPDI), toluene diisocyanate (TDI), dicyclohexylmethylene diisocyanate (Hylene W), hexamethylene diisocyanate (HMDI), biuret trihexane isocyanate (BTHI), and their mixtures .
- the polymer matrix is a polyester matrix
- a carboxyl-terminated prepolymer preferably a carboxyl-terminated polybutadiene (PBCT) or a carboxyl-terminated polyester
- PBCT carboxyl-terminated polybutadiene
- MAPO trimethylaziridinyl phosphine oxide
- the polymer matrices may optionally include a plasticizer, such as those usually used in the use of composite explosives and composite solid propellants.
- the interface between the two layers has a star-shaped cross section having 6 to 24 branches.
- the end of the branches of the star can have any shape. These ends are preferably pointed, flat or rounded.
- the star interface can be strictly polygonal or have connection leaves between branches.
- the branches of the star are identical, have an axis of symmetry passing through the center of the star and if n is the number of branches, each branch is separated from the neighboring branches by an angle of 2 ⁇ not
- the charge of the composite explosive constituting the internal layer contains at least one organic nitro explosive, preferably more than 20%, better still more than 60%, by weight of organic nitro explosive, expressed relative to the composite explosive and the charge of the pyrotechnic composition constituting the peripheral layer contains at least one mineral oxidant or an organic nitro explosive.
- organic nitro explosives include hexogen, octogen, pentrite, 5-oxo 3-nitro 1,2,4-triazole, triaminotrinitrobenzene and nitroguanidine.
- the internal layer is a composite explosive consisting of a charged polyurethane or polyester matrix, the charge of which contains more than 20% by weight, expressed relative to the composite explosive, of organic nitro explosive chosen from the group. consisting of hexogen, octogen, 5-oxo 3-nitro 1,2,4-triazole and their mixtures.
- the charge of the composite explosive constituting the internal layer consists solely of the organic nitro explosive, preferably between 60% and 90%, better still between 80% and 90%, percentages expressed relative to the composite explosive.
- the pyrotechnic composition constituting the peripheral layer is a composite explosive, preferably consisting of a charged polyurethane or polyester matrix, the charge of which contains more than 20% by weight, expressed relative to the composite explosive.
- organic nitro explosive preferably chosen from the group consisting of hexogen, octogen, pentrite, triaminotrinitrobenzene, nitroguanidine, 5-oxo 3-nitro 1,2,4-triazole and their mixtures.
- the charge can also comprise, for example, a mineral oxidant and / or a reducing metal, but preferably, the charge of the composite explosive constituting the peripheral layer consists solely of the organic nitro explosive, preferably between 60% and 90% , better still between 80% and 90%, percentages expressed relative to the composite explosive.
- the pyrotechnic composition constituting the peripheral layer is a pyrotechnic composition of the family of solid composite propellants consisting of a charged polyurethane or polyester polymer matrix, the charge of which, free of organic nitro explosive, contains at least a mineral oxidant.
- composite solid propellant is conventionally understood to mean a pyrotechnic composition used in the same way as that of a composite explosive, and consisting of a solid polymer matrix, generally polyurethane or polyester, charged, said charge. being powdery and essentially consisting of a mineral oxidant and in general of a reducing metal.
- solid composite propellants are functionally combustible and include various additives to control propulsion.
- Composite solid propellants and how to obtain them are for example described by A. DAVENAS, Solid propellant technology, Ed. Masson, 1989.
- the Applicant wishes not to qualify the peripheral layer of "Propellant” although the composition of this layer differs from that of solid composite propellants only by the absence of additives linked to the propellant function of the propellants (ballistic additives, combustion accelerators, etc.), and prefers to use the expression "Pyrotechnic composition of the family of solid composite propellants".
- the charge of the pyrotechnic composition of the family of solid composite propellants constituting the peripheral layer contains an inorganic oxidant chosen from the group consisting of ammonium perchlorate, potassium perchlorate, ammonium nitrate, nitrate sodium, and mixtures thereof, that is to say all mixtures of at least two aforementioned products.
- the charge of the pyrotechnic composition of the family of solid composite propellants constituting the peripheral layer contains a reducing metal, preferably chosen from the group consisting of aluminum, zirconium, magnesium, boron and their mixtures , that is to say all mixtures of at least two of the four metals mentioned above.
- the reducing metal is aluminum.
- the charge of the pyrotechnic composition constituting the peripheral layer is a mineral charge, preferably chosen from the group consisting of ammonium perchlorate, potassium perchlorate, ammonium nitrate, sodium nitrate and their mixtures.
- the charge therefore does not contain any other compound.
- the charge of the pyrotechnic composition constituting the peripheral layer is made up, and only made up, of a mixture of a reducing metal, preferably chosen from the group made up of aluminum, zirconium, magnesium, boron and their mixtures, and a mineral oxidant preferably chosen from the group consisting of ammonium perchlorate, potassium perchlorate, ammonium nitrate, sodium nitrate and their mixtures.
- the filler is a mixture of ammonium perchlorate and aluminum.
- the term "bi-composition" qualifying the explosive charge should not be considered in a narrow and limiting sense.
- the observed technical effect and the results which result from it remain when the internal layer and / or the peripheral layer is itself bi or multicomposition, with conventional interfaces not starred between layers, or even when several interfaces are starred, for example in the case of a sensitive composite explosive coated with a less sensitive composite explosive with a starred interface, the block also made up being itself coated with a quasi-insensitive pyrotechnic composition from the family of solid composite propellants, the second interface also being starred.
- the present invention also relates to a method for obtaining a burst effect by releasing gas in the envelope of an element of explosive ammunition consisting of an envelope containing a bi-composition explosive charge, then rupture of the envelope due to the pressure of the gas formed.
- This process is characterized in that the element of explosive ammunition is an aforementioned element according to the invention and in that the release of gas is obtained by detonation of the composite explosive constituting the internal layer of the charge, then reaction of the less sensitive pyrotechnic composition constituting the peripheral layer, reaction initiated by the detonation wave of the composite explosive constituting the internal layer.
- peripheral layer When the peripheral layer is a composite explosive, it also detonates. On the other hand, when the peripheral layer is a pyrotechnic composition from the family of solid composite propellants, it reacts without detonating.
- FIG. 1 represents a schematic cross-section in cross section of an element that is not very vulnerable to explosive munitions according to the invention.
- FIG. 2 represents a schematic cross-section in cross section of another not very vulnerable element of explosive ammunition according to the invention.
- FIG. 3 represents comparative envelope speed curves as a function of the radial expansion.
- the element of explosive ammunition consists of a casing 1.11 of steel, cylindrical with a circular base surface containing a bi-composition explosive charge consisting of an internal layer 2.12 in composite explosive coated with a peripheral layer 3.13 in a less sensitive pyrotechnic composition than the composite explosive constituting the internal layer 2.12.
- the interface between layers 2 and 3 has a star shape with 6 identical, symmetrical branches, connected by connecting fillets and whose ends are rounded. Each branch is separated from neighboring branches by an angle of 60 degrees.
- the dimensions of the star can be defined by its circumscribed circle of diameter D, its inscribed circle of diameter d and by the thickness e of the branches.
- the star interface is strictly polygonal.
- the star is formed by 10 identical and symmetrical branches whose ends are pointed. Each branch is separated from neighboring branches by an angle of 36 degrees.
- the dimensions of the star can be defined by its circumscribed circle of diameter D and its inscribed circle of diameter d.
- Example 1 Explosive ordnance elements according to the invention.
- Example 1 This example was carried out according to FIG. 1.
- the casing 1, 12.5 mm thick is made of steel. Its outside diameter is 115 mm and its inside diameter 90mm. Its length is 300 mm.
- the casing 1 also has a bottom made of 12.5 mm thick steel.
- the geometrical characteristics of the star D, d and e above are respectively 50 mm, 23 mm and 3 mm.
- the inner layer 2, full is a composite explosive with a composition of 86% by weight of octogen and 14% by weight of a polyurethane polymer matrix obtained by reaction of a polyether with hydroxyl endings with isophorone diisocyanate (IPDI).
- IPDI isophorone diisocyanate
- the peripheral layer 3 is a composite explosive of composition 12% by weight of octogen, 72% by weight of 5-oxo 3-nitro 1,2,4-triazole and 16% by weight of a polyurethane polymer matrix obtained by reaction of a polybutadiene with hyrodxyl endings with IPDI.
- This peripheral composition is less efficient (detonation speed 7440m / s) and considerably less sensitive (IAD of 25 cards according to the Card Gap Test codified in 40mm diameter). than the internal composition.
- the priming of layer 2 was carried out using a conventional detonator, a small 4g mass relay in hexocire and a plane wave generator (GOP) with a diameter of 76mm as main relay.
- the detonation wave of the inner layer 2 caused the detonation of the peripheral layer 3 and then the rupture of the envelope 1, with the formation of splinters.
- the evolution of the raising speed of the metal envelope as a function of the radial expansion was recorded, which characterizes the level of the burst effect sought, using a slit camera according to the lifting experience.
- cylindrical classic for those skilled in the art.
- the corresponding curve is shown in Figure 3 (Curve E1).
- Example 2 This example was carried out according to FIG. 2.
- the casing 11, 12.5 mm thick, is made of steel. Its outside diameter is 115 mm and its inside diameter 90mm. Its length is 300mm.
- the casing 11 has a bottom also made of 12.5 mm thick steel.
- the geometrical characteristics of the star D and d above are respectively 50 mm and 34 mm.
- Example 2 The composite explosives constituting the internal layer 12 and the peripheral layer 13 are the same as for Example 1. This munition element was detonated and the splinter effect was measured as in Example 1. The curve characterizing the level of splinter effect obtained is shown in FIG. 3 (curve E2).
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Chemistry (AREA)
- Air Bags (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Medicinal Preparation (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9107851 | 1991-06-26 | ||
FR9107851A FR2678262B1 (fr) | 1991-06-26 | 1991-06-26 | Element peu vulnerable de munition explosive comportant un chargement explosif bi-composition et procede d'obtention d'un effet d'eclats. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0527064A1 EP0527064A1 (fr) | 1993-02-10 |
EP0527064B1 true EP0527064B1 (fr) | 1995-12-13 |
Family
ID=9414292
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92401654A Expired - Lifetime EP0527064B1 (fr) | 1991-06-26 | 1992-06-16 | Elément peu vulnérable de munition explosive comportant un chargement explosif bi-composition et procédé d'obtention d'un effet d'éclats |
Country Status (11)
Country | Link |
---|---|
US (1) | US5243916A (ja) |
EP (1) | EP0527064B1 (ja) |
JP (1) | JP3142023B2 (ja) |
AU (1) | AU652056B2 (ja) |
CA (1) | CA2071148C (ja) |
DE (1) | DE69206711T2 (ja) |
ES (1) | ES2082402T3 (ja) |
FI (1) | FI110510B (ja) |
FR (1) | FR2678262B1 (ja) |
GR (1) | GR3018946T3 (ja) |
NO (1) | NO174685B1 (ja) |
Families Citing this family (22)
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GB2466236B (en) * | 1992-06-05 | 2010-11-17 | Poudres & Explosifs Ste Nale | Dual-composition plastic bonded explosive |
FR2722876B1 (fr) * | 1994-07-22 | 1996-09-13 | Manurhin Defense | Projectile explosif |
FR2741437B1 (fr) | 1995-11-16 | 1997-12-19 | Poudres & Explosifs Ste Nale | Procede de fabrication d'un element de munition explosive a fragmentation controlee |
US5996501A (en) * | 1997-08-27 | 1999-12-07 | The United States Of America As Represented By The Secretary Of The Air Force | Blast and fragmentation enhancing explosive |
US6358339B1 (en) * | 2000-04-28 | 2002-03-19 | The Regents Of The University Of California | Use of 3,3'-diamino-4,4'-azoxyfurazan and 3,3'-diamino-4,4'-azofurazan as insensitive high explosive materials |
NO312264B1 (no) * | 2000-11-14 | 2002-04-15 | Nammo Raufoss As | Pyroteknisk ladningsstruktur |
ES2264958T3 (es) * | 2001-11-28 | 2007-02-01 | Rheinmetall Waffe Munition Gmbh | Proyectiles con elevado efecto de penetracion y lateral con dispositivo de disgregacion integrado. |
DE10208228B4 (de) * | 2002-02-26 | 2005-03-17 | Diehl Munitionssysteme Gmbh & Co. Kg | Blastgranate |
ZA200205775B (en) * | 2002-04-12 | 2003-03-28 | Diehl Munitionssysteme Gmbh | Insensitive hexogen explosive. |
KR100561952B1 (ko) * | 2002-09-13 | 2006-03-21 | 주식회사 한화 | 미진동 파쇄제 조성물 |
US8414718B2 (en) | 2004-01-14 | 2013-04-09 | Lockheed Martin Corporation | Energetic material composition |
US20090320711A1 (en) | 2004-11-29 | 2009-12-31 | Lloyd Richard M | Munition |
CN101273243A (zh) * | 2005-06-21 | 2008-09-24 | 吉克科技有限责任公司 | 炮弹或弹头 |
WO2008097241A2 (en) * | 2006-05-30 | 2008-08-14 | Lockheed Martin Corporation | Selectable effect warhead |
US8250985B2 (en) * | 2006-06-06 | 2012-08-28 | Lockheed Martin Corporation | Structural metallic binders for reactive fragmentation weapons |
US8276516B1 (en) | 2008-10-30 | 2012-10-02 | Reynolds Systems, Inc. | Apparatus for detonating a triaminotrinitrobenzene charge |
KR101028813B1 (ko) * | 2009-01-19 | 2011-04-12 | 국방과학연구소 | 폭발탄에 압축형 복합화약을 충전하는 방법 및 그 제조장치 |
US8978560B1 (en) * | 2010-09-10 | 2015-03-17 | The United States Of America As Represented By The Secretary Of The Army | Shock mitigation barrier for warheads |
NO2726704T3 (ja) * | 2014-07-22 | 2018-02-24 | ||
DE102014018218B4 (de) | 2014-12-06 | 2023-05-17 | TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH | Vorrichtung zur gesteuerten Initiierung der Deflagration einer Sprengladung |
DE102019003432B4 (de) * | 2019-05-15 | 2022-08-25 | TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH | Gefechtskopf |
CN114440715A (zh) * | 2022-03-15 | 2022-05-06 | 南京理工大学 | 一种引信异质装药结构传爆管 |
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EP0481838A1 (fr) * | 1990-10-17 | 1992-04-22 | Societe Nationale Des Poudres Et Explosifs | Elément peu vulnérable de munition explosive comportant un chargement explosif multicomposition et procédé d'obtention d'un effet de souffle et/ou de bulles |
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US37661A (en) * | 1863-02-10 | Improvement in explosive projectiles for ordnance | ||
FR796861A (fr) * | 1935-01-16 | 1936-04-16 | Ici Ltd | Perfectionnements aux cartouches explosives ou charges de forages |
BE492106A (ja) * | 1949-03-29 | |||
FR1603394A (ja) * | 1968-10-15 | 1971-04-13 | ||
US3918365A (en) * | 1971-09-20 | 1975-11-11 | Republic Of France | New and useful improvements in propergols or propellants |
US3908364A (en) * | 1973-01-19 | 1975-09-30 | United Technologies Corp | Putty propellant stress refief system |
FR2365774A1 (fr) * | 1976-09-27 | 1978-04-21 | Serat | Perfectionnements aux chargements des projectiles |
FR2502768B1 (fr) * | 1981-03-27 | 1986-01-17 | Thomson Brandt | Munition explosive |
US4627353A (en) * | 1985-10-25 | 1986-12-09 | Dresser Industries, Inc. | Shaped charge perforating apparatus |
GB2214618B (en) * | 1988-01-28 | 1990-04-18 | Royal Ordnance Plc | Explosive devices and methods of use thereof |
US5054399A (en) * | 1988-07-05 | 1991-10-08 | The United States Of America As Represented By The Secretary Of The Air Force | Bomb or ordnance with internal shock attenuation barrier |
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1991
- 1991-06-26 FR FR9107851A patent/FR2678262B1/fr not_active Expired - Fee Related
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1992
- 1992-06-12 FI FI922721A patent/FI110510B/fi not_active IP Right Cessation
- 1992-06-12 CA CA002071148A patent/CA2071148C/fr not_active Expired - Lifetime
- 1992-06-16 EP EP92401654A patent/EP0527064B1/fr not_active Expired - Lifetime
- 1992-06-16 AU AU18247/92A patent/AU652056B2/en not_active Expired
- 1992-06-16 DE DE69206711T patent/DE69206711T2/de not_active Expired - Lifetime
- 1992-06-16 ES ES92401654T patent/ES2082402T3/es not_active Expired - Lifetime
- 1992-06-18 US US07/900,481 patent/US5243916A/en not_active Expired - Lifetime
- 1992-06-23 NO NO19922474A patent/NO174685B1/no not_active IP Right Cessation
- 1992-06-25 JP JP04191672A patent/JP3142023B2/ja not_active Expired - Lifetime
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1996
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Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0481838A1 (fr) * | 1990-10-17 | 1992-04-22 | Societe Nationale Des Poudres Et Explosifs | Elément peu vulnérable de munition explosive comportant un chargement explosif multicomposition et procédé d'obtention d'un effet de souffle et/ou de bulles |
Also Published As
Publication number | Publication date |
---|---|
FI922721A0 (fi) | 1992-06-12 |
GR3018946T3 (en) | 1996-05-31 |
FR2678262A1 (fr) | 1992-12-31 |
FI110510B (fi) | 2003-02-14 |
NO174685C (no) | 1994-06-15 |
EP0527064A1 (fr) | 1993-02-10 |
NO174685B1 (no) | 1994-06-17 |
AU1824792A (en) | 1993-01-07 |
AU652056B2 (en) | 1994-08-11 |
CA2071148A1 (fr) | 1992-12-27 |
FR2678262B1 (fr) | 1993-12-10 |
FI922721A (fi) | 1992-12-27 |
NO922474A (no) | 1992-12-28 |
JP3142023B2 (ja) | 2001-03-07 |
ES2082402T3 (es) | 1996-03-16 |
US5243916A (en) | 1993-09-14 |
NO922474D0 (no) | 1992-06-23 |
DE69206711D1 (de) | 1996-01-25 |
NO174685B (no) | 1994-03-07 |
DE69206711T2 (de) | 1996-05-09 |
CA2071148C (fr) | 2003-04-22 |
JPH06317400A (ja) | 1994-11-15 |
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