EP1275930B1 - Allumeur de sécurité pour élément de munition pyrotechnique susceptible d'être soumis à un échauffement lent. - Google Patents
Allumeur de sécurité pour élément de munition pyrotechnique susceptible d'être soumis à un échauffement lent. Download PDFInfo
- Publication number
- EP1275930B1 EP1275930B1 EP02291530A EP02291530A EP1275930B1 EP 1275930 B1 EP1275930 B1 EP 1275930B1 EP 02291530 A EP02291530 A EP 02291530A EP 02291530 A EP02291530 A EP 02291530A EP 1275930 B1 EP1275930 B1 EP 1275930B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- igniter
- pyrotechnic
- ammunition
- safety
- solid
- 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
Links
- 238000010438 heat treatment Methods 0.000 title claims description 14
- 239000002360 explosive Substances 0.000 claims description 43
- 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 26
- 238000002485 combustion reaction Methods 0.000 claims description 22
- 238000006243 chemical reaction Methods 0.000 claims description 21
- 239000007787 solid Substances 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 19
- 239000002131 composite material Substances 0.000 claims description 13
- 238000005474 detonation Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 6
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- 230000008569 process Effects 0.000 claims description 2
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- 239000000028 HMX Substances 0.000 description 6
- 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 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 239000004814 polyurethane Substances 0.000 description 5
- 229920002635 polyurethane Polymers 0.000 description 5
- 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 description 4
- SPSSULHKWOKEEL-UHFFFAOYSA-N 2,4,6-trinitrotoluene Chemical compound CC1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O SPSSULHKWOKEEL-UHFFFAOYSA-N 0.000 description 4
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- 239000001993 wax Substances 0.000 description 4
- HZTVIZREFBBQMG-UHFFFAOYSA-N 2-methyl-1,3,5-trinitrobenzene;[3-nitrooxy-2,2-bis(nitrooxymethyl)propyl] nitrate Chemical compound CC1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O.[O-][N+](=O)OCC(CO[N+]([O-])=O)(CO[N+]([O-])=O)CO[N+]([O-])=O HZTVIZREFBBQMG-UHFFFAOYSA-N 0.000 description 3
- GDDNTTHUKVNJRA-UHFFFAOYSA-N 3-bromo-3,3-difluoroprop-1-ene Chemical compound FC(F)(Br)C=C GDDNTTHUKVNJRA-UHFFFAOYSA-N 0.000 description 3
- 239000005058 Isophorone diisocyanate Substances 0.000 description 3
- 239000005062 Polybutadiene Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 239000003431 cross linking reagent 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
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920002857 polybutadiene Polymers 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 231100000331 toxic Toxicity 0.000 description 3
- 230000002588 toxic effect Effects 0.000 description 3
- 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 description 2
- 206010061218 Inflammation Diseases 0.000 description 2
- SNIOPGDIGTZGOP-UHFFFAOYSA-N Nitroglycerin Chemical compound [O-][N+](=O)OCC(O[N+]([O-])=O)CO[N+]([O-])=O SNIOPGDIGTZGOP-UHFFFAOYSA-N 0.000 description 2
- 239000000006 Nitroglycerin Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
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- 229960003711 glyceryl trinitrate Drugs 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 230000004054 inflammatory process Effects 0.000 description 2
- 239000003350 kerosene Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000037452 priming Effects 0.000 description 2
- 230000001141 propulsive effect Effects 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- IDCPFAYURAQKDZ-UHFFFAOYSA-N 1-nitroguanidine Chemical compound NC(=N)N[N+]([O-])=O IDCPFAYURAQKDZ-UHFFFAOYSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 206010011224 Cough Diseases 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- HHEFNVCDPLQQTP-UHFFFAOYSA-N ammonium perchlorate Chemical compound [NH4+].[O-]Cl(=O)(=O)=O HHEFNVCDPLQQTP-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- QFFVPLLCYGOFPU-UHFFFAOYSA-N barium chromate Chemical compound [Ba+2].[O-][Cr]([O-])(=O)=O QFFVPLLCYGOFPU-UHFFFAOYSA-N 0.000 description 1
- 229940083898 barium chromate Drugs 0.000 description 1
- 235000013871 bee wax Nutrition 0.000 description 1
- 239000012166 beeswax Substances 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002144 chemical decomposition reaction Methods 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
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- 238000004200 deflagration Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 231100000722 genetic damage Toxicity 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- -1 polyoxypropylene Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 210000001533 respiratory mucosa Anatomy 0.000 description 1
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- 238000012360 testing method Methods 0.000 description 1
- 231100000925 very toxic Toxicity 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C19/00—Details of fuzes
- F42C19/02—Fuze bodies; Fuze housings
-
- 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
-
- 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
- C06B45/04—Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive
- C06B45/06—Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive the solid solution or matrix containing an organic component
- C06B45/10—Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive the solid solution or matrix containing an organic component the organic component containing a resin
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
- C06C9/00—Chemical contact igniters; Chemical lighters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B39/00—Packaging or storage of ammunition or explosive charges; Safety features thereof; Cartridge belts or bags
- F42B39/20—Packages or ammunition having valves for pressure-equalising; Packages or ammunition having plugs for pressure release, e.g. meltable ; Blow-out panels; Venting arrangements
Definitions
- the present invention is in the field general pyrotechnic munitions, plus particularly in the field of explosive ordnance.
- a safety igniter for a pyrotechnic munition element comprising a envelope-shaped structure and a loading pyrotechnic substance contained in the structure, said igniter being intended to generate combustion without detonation of the pyrotechnic charge when the element ammunition is subjected to slow heating.
- Ammunition elements loaded with explosives such missile heads, bomb bodies, penetrators and submarine ammunition can lead to violent reactions, deflagration or detonation, because of their strong confinement.
- the deconfinement system may consist of opaque leaflets at a preset pressure which play the role of safety valve by releasing a evacuation surface to generated decomposition gases by the pyrotechnic reaction.
- Other techniques exist such as the use of fusible elements, cutting cords or rupture primers.
- slow heating solicitation (slow Cook Off) is classically specified and consists of subject a munition item to a warm-up a few degrees per hour until his reaction pyrotechnic that can intervene after several dozens of hours. These reactions can be very violent because they start in some cases in the heart pyrotechnic material, in a medium that will have the time to degrade by pyrolysis of the binder and start of chemical decomposition of active ingredients.
- Heart starts are frequently observed with the large caliber ammunition (bombs, penetrators, submarine ammunition). They are there consequence of the thermally insulating nature of explosive and early exothermic decomposition at within the material.
- the heat released can not evacuate to the outside and generates an elevation additional internal temperature that accelerates further decomposition to the bulk reaction. The larger the dimensions, the lower is the reaction temperature.
- Nos. 5,786,544 (which describes the preamble of claim 1) and GB 2,313,653 describe such safety igniters, essentially consisting of a plastic tube containing a powder or ignition pellets. The igniter is drowned in a foam ring that separates it from the load, in the rear part of the ammunition element, proximity to deconfinement holes.
- the ignition pellets contained in the tube preferably consist of a mixture of boron and of barium chromate.
- chromate barium is particularly toxic, carcinogenic, and that it causes heritable genetic damage. Of more, under thermal stresses, it emits fumes also very toxic.
- the present invention proposes a solution to this problem and is mainly concerned with a new security igniter for ammunition element pyrotechnic comprising a shaped structure envelope and a solid pyrotechnic charge contained in the structure, said igniter being intended to generate combustion without detonation of the load pyrotechnic when the ammunition element is subjected to a slow warm-up.
- This new safety igniter according to the invention is characterized in that it comprises a block in solid composition based on pentrite, and in that it is solely constituted by such a block.
- Such a safety igniter is particularly simple to manufacture and insert into the element of ammunition. Monobloc, it presents properties intrinsic mechanics sufficient not requiring inert housing such as a plastic tube.
- this block in solid composition based on pentrite is a detonable material bringing energy additional in the context of normal use of the ammunition, which is not the case of the aforementioned igniters of the state of the art that are not detachable.
- This duality of function, security igniter in the part of a slow and explosive heating in the frame of normal use of the ammunition, which is specific to the present invention is particularly advantageous.
- constituents of the safety igniter according to the invention are neither toxic or carcinogenic, and that fumes from combustion are not particularly toxic.
- composition based on pentrite it is necessary to otherwise include a composition having a weight in pentrite ⁇ 5%, better still ⁇ 10%, and better ⁇ 25%, the maximum weight content being about 98%.
- the block in solid pyrotechnic composition based on pentrite is a composite explosive (cast plastic bonded explosive).
- Composite explosives are, so general, well known to those skilled in the art. They are obtained from binder explosive compositions plastic implemented by casting and then polymerization and consist of a loaded plastic binder containing at least one nitrated organic explosive charge like hexogen, octogen or pentrite. Other charges may also be present, oxidizing as example ammonium perchlorate, or reducing as for example aluminum.
- the first pentrite, and possibly the other charges, explosive or non-explosive with a resin liquid polymerizable and optionally a plasticizer, then the paste is poured into a mold desired dimensions for the block. We then do polymerize the paste.
- crosslinking agents catalysts, wetting agents, composite explosives are obtained varied.
- the mold may consist of a machined cavity in the pyrotechnic charge solid ammunition that we want to secure.
- the plastic binder is a polyurethane binder, the content of which is preferably between 12% and 20% by weight relative to the weight total of the composite explosive.
- the binders polyurethanes those obtained by reaction are preferred of a polybutadiene hydroxylated with a polyisocyanate.
- binders can be used, in particular silicone binders and polyester binders.
- the block solid pyrotechnic composition based on pentrite is a compressed explosive, ie a binder explosive plastic implemented by compression.
- the matter of base (molding powder) consists of granules in which the charges are coated with a material thermoplastic according to a well-known technique of the skilled person.
- thermoplastic binder After heating the molding powder to a temperature such that the thermoplastic binder begins to soften, it is introduced into a heated mold and then compressed under high pressure, of the order of 3 bar.
- the block solid composition based on pentrite is an explosive cast-melted, for example a pentolite (mixtures of TNT and pentrite), such as pentolite 20-80 (20% weight of pentrite and 80% by weight of tolite) and the pentolite 50-50.
- a pentolite mixtures of TNT and pentrite
- pentolite 20-80 (20% weight of pentrite and 80% by weight of tolite
- pentolite 50-50 a mixture of TNT and pentrite
- Cast-melted explosives which are well known those skilled in the art, are implemented by pouring into molds of a suspension of a granular explosive in a melted explosive, such as TNT.
- the block solid composition based on pentrite is a pentocire, that is, an essentially constituted composition of pentrite coated with a film of wax such as beeswax or synthetic wax.
- the coating method for example underwater, is well known to those skilled in the art.
- the weight content of wax is preferably between 2% and 12%.
- Such compositions can also include additives such as graphite and / or aluminum.
- pentocires is carried out by cold pressing in the mold of a press.
- the block solid pyrotechnic composition based on pentrite can have some form.
- the block is in the form cylindrical, and better still in the form of a cylinder of revolution usually having a diameter between 2mm and 50mm.
- the diameter of the block can be smaller, equal or greater than the critical diameter of the composition pyrotechnics based on pentrite constituting the block.
- the height of the cylinder can be any. We usually uses diameter / height ratios included between 0.5 and 3, but preferably this ratio is neighbor of 1 or greater than 1.
- the temperature of reaction of the safety igniter when the element of ammunition is subjected to slow heating, is a decreasing function of the block diameter, and that one can so very easily predetermine the temperature of reaction of the safety igniter depending on the diameter of the block, for a given composition and a given diameter / height ratio.
- This particularly easy temperature setting reaction of the safety igniter offers an advantage significant to change the safety margins of a given ammunition, or to use similar igniters composition in ammunition with pyrotechnic charges of different compositions.
- the present invention also relates to a pyrotechnic munition element comprising a envelope-shaped structure, generally metallic and for example steel, a solid pyrotechnic charge contained in the structure, a device for deconfinement of the structure, for example a system as mentioned above, and a safety igniter also as mentioned above and object of the present invention to generate combustion without detonation pyrotechnic charge when ammunition item is subject to slow heating.
- a pyrotechnic munition element comprising a envelope-shaped structure, generally metallic and for example steel, a solid pyrotechnic charge contained in the structure, a device for deconfinement of the structure, for example a system as mentioned above, and a safety igniter also as mentioned above and object of the present invention to generate combustion without detonation pyrotechnic charge when ammunition item is subject to slow heating.
- the solid pyrotechnic charge contained in the structure is preferably explosive.
- the explosive charge is preferably an explosive composite but it can also be for example a compressed explosive, a cast-melted explosive for example tolite base, or an explosive-wax.
- the solid pyrotechnic charge contained in the structure can however be a propulsive load, for example a solid propellant, preferably a composite propellant.
- the safety igniter allows, in situation of slow heating, to generate combustion without detonation of the cargo but also without propulsion the ammunition element, structure or fragments of structure.
- the safety igniter is located near the deconfinement device of the structure, so as to facilitate the escape of the combustion gases.
- the igniter is at least partially embedded in the solid pyrotechnic charge.
- a housing for igniter can also be realized during the manufacture of molding loading using a removable core.
- the igniter is then placed in housing.
- a collage can be realized to promote the maintenance of the igniter in the housing.
- the igniter may also not be at least partially embedded in the load, ie being independent of loading. It can be for example maintained in the structure using usual fasteners, or even drowned in a foam located in a chamber for the expansion of gases near the deconfinement device.
- the element of ammunition when the element of ammunition is subjected to slow heating and that the temperature reaches the reaction temperature predetermined safety igniter, this one ignites. Hot gases and resulting particles of the igniter's combustion then initiate the burning of the ammunition load that burns without detonate or propel the ammunition element, the structure or structural fragments.
- the present invention also relates to a process for generating combustion without detonation of a solid pyrotechnic charge content in the envelope-like structure of an element of pyrotechnic ammunition when subjected to a slow heating, said ammunition element comprising a deconfining device of the structure and a safety igniter as mentioned above according to the invention who, during the slow warm-up, reacts by simple combustion at a temperature below the temperature reaction of the pyrotechnic charge and then generates the combustion without detonation of the pyrotechnic charge.
- Figures 1 and 2 show a section schematic longitudinal of 2 ammunition elements approximately cylindrical according to the invention.
- the igniter 5 cylindrical safety device is totally embedded in the loading 4, one of its 2 circular flat faces constituting part of the wall of the chamber 6.
- the igniter 5 cylindrical security is located in room 6, stalled by a ring of polyurethane foam no shown in the figure.
- the igniters present themselves in the form of a cylindrical block of revolution having a diameter of 30mm.
- the height of the block is 15mm for example 1 and 30mm for example 2.
- the mass of the lighter is 17g for example 1 and 34g for example 2.
- the composite explosive constituting these 2 igniters consists of 40% by weight of octogen, 44% by weight of pentrite and 16% by weight of a binder polyurethane based on polyoxypropylene triol and isophorone diisocyanate.
- Example 3 Explosive ammunition element type indenter according to the invention.
- a penetrator of 280 kg, of a 285mm caliber including a structure approximately cylindrical steel and 85 kg of a composite explosive charge consisting of octogen, ammonium perchlorate and aluminum as fillers and a polyurethane binder based on polybutadiene hydroxyl and isophorone diisocyanate as crosslinking agent.
- This indenter has been equipped with a device decontainment of the structure consisting of operculas flappers, and on the other hand the safety igniter obtained according to Example 1, according to a provision in conformity to that schematized figure 1.
- the safety igniter was inserted, during the carrying out the loading, in the explosive paste after its casting and before its polymerization, so that is perfectly attached to the load.
- This indenter also comprises a gas expansion chamber 250 cm 3 volume, arranged as in Figure 1.
- This indenter was subjected to a warm-up 3.3 ° C per hour, using a suitable oven.
- the value of 142 ° C corresponds to the average of 10 thermocouples installed in different positions of the oven.
- an ammunition element explosive for underwater use 500mm caliber, comprising an approximately cylindrical structure steel and 150kg of a composite explosive charge consisting of hexogen, ammonium perchlorate and aluminum as fillers and a polyurethane binder to hydroxyl polybutadiene base and isophorone diisocyanate as crosslinking agent.
- This ammunition was equipped with a device decontainment of the structure consisting of operculas flappers, and on the other hand the safety igniter obtained according to example 2, according to a compliant disposition to that schematized figure 1.
- the safety igniter has been inserted into the loading as described for Example 3.
- This munition also comprises a gas expansion chamber 400 cm 3 volume, arranged as in Figure 1.
- This element of explosive ordnance was subjected to underwater use at a slow heating of 3.3 ° C by hour, using an appropriate oven.
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- Organic Chemistry (AREA)
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- General Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
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Description
- une structure 1 en forme d'enveloppe métallique approximativement cylindrique,
- un élément 2 métallique permettant la fermeture de la munition,
- un dispositif 3 de déconfinement de la structure 1,
- un chargement 4 pyrotechnique solide contenu dans la structure 1 et revêtu par ladite structure 1,
- un allumeur de sécurité 5 constitué d'un bloc cylindrique en composition pyrotechnique solide à base de pentrite,
- une chambre 6 d'expansion des gaz.
- pour l'exemple 5, l'allumeur de sécurité a un diamètre de 80mm et une hauteur de 80mm.
- Pour l'exemple 6, l'allumeur de sécurité a un diamètre de 5mm et une hauteur de 5mm.
Claims (9)
- Allumeur de sécurité (5) pour élément de munition pyrotechnique comprenant une structure (1) en forme d'enveloppe et un chargement (4) pyrotechnique solide contenu dans la structure (1), ledit allumeur (5) étant destiné à engendrer la combustion sans détonation du chargement (4) pyrotechnique lorsque l'élément de munition est soumis à un échauffement lent, c'est-à-dire compris entre 0,5°C/heure et 50°C/heure, caractérisé en ce que cet allumeur (5) est uniquement constitué par un bloc en composition pyrotechnique solide à base de pentrite.
- Allumeur de sécurité (5) selon la revendication 1, caractérisé en ce que le bloc en composition solide à base de pentrite est un explosif composite.
- Allumeur de sécurité (5) selon la revendication 1, caractérisé en ce que le bloc en composition pyrotechnique solide à base de pentrite se présente sous la forme d'un cylindre de révolution ayant un diamètre compris entre 2mm et 50mm.
- Elément de munition pyrotechnique comprenant une structure (1) en forme d'enveloppe, un chargement (4) pyrotechnique solide contenu dans la structure, un dispositif de déconfinement de la structure (1) et un allumeur de sécurité (5) permettant d'engendrer la combustion sans détonation du chargement (4) pyrotechnique lorsque l'élément de munition est soumis à un échauffement lent, c'est-à-dire compris entre 0,5°C/heure et 50°C/heure, caractérisé en ce que l'allumeur de sécurité (5) est un allumeur selon la revendication 1.
- Elément de munition pyrotechnique selon la revendication 4, caractérisé en ce que le chargement (4) pyrotechnique solide contenu dans la structure (1) est un chargement explosif.
- Elément de munition pyrotechnique selon la revendication 4, caractérisé en ce que le chargement (4) pyrotechnique solide contenu dans la structure (1) est un chargement propulsif.
- Elément de munition pyrotechnique selon la revendication 4, caractérisé en ce que l'allumeur de sécurité (5) est situé à proximité du dispositif (3) de déconfinement de la structure (1).
- Elément de munition pyrotechnique selon la revendication 4, caractérisé en ce que l'allumeur de sécurité (5) est au moins partiellement noyé dans le chargement (4) pyrotechnique solide.
- procédé permettant d'engendrer la combustion sans détonation d'un chargement (4) pyrotechnique solide contenu dans la structure (1) en forme d'enveloppe d'un élément de munition pyrotechnique lorsque celui-ci est soumis à un échauffement lent, c'est-à-dire compris entre 0,5°C/heure et 50°C/heure, ledit élément de munition comportant un dispositif (3) de déconfinement de la structure (1) et un allumeur de sécurité (5) qui, lors de l'échauffement lent, réagit par simple combustion à une température inférieure à la température de réaction du chargement (4) pyrotechnique puis engendre la combustion sans détonation du chargement (4) pyrotechnique, caractérisé en ce que l'allumeur de sécurité (5) est un allumeur selon la revendication 1.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0109374 | 2001-07-13 | ||
FR0109374A FR2827376B1 (fr) | 2001-07-13 | 2001-07-13 | Allumeur de securite pour element de munition pyrotechnique susceptible d'etre soumis a un echauffement lent |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1275930A1 EP1275930A1 (fr) | 2003-01-15 |
EP1275930B1 true EP1275930B1 (fr) | 2005-01-19 |
Family
ID=8865484
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02291530A Expired - Lifetime EP1275930B1 (fr) | 2001-07-13 | 2002-06-19 | Allumeur de sécurité pour élément de munition pyrotechnique susceptible d'être soumis à un échauffement lent. |
Country Status (9)
Country | Link |
---|---|
US (1) | US6615737B2 (fr) |
EP (1) | EP1275930B1 (fr) |
JP (1) | JP3934496B2 (fr) |
AU (1) | AU783637B2 (fr) |
DE (1) | DE60202645T2 (fr) |
FR (1) | FR2827376B1 (fr) |
IL (1) | IL150378A (fr) |
NO (1) | NO323566B1 (fr) |
ZA (1) | ZA200205465B (fr) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
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US6969434B1 (en) * | 2002-12-23 | 2005-11-29 | The United States Of America As Represented By The Secretary Of The Navy | Castable thermobaric explosive formulations |
FR2864219B1 (fr) * | 2003-12-22 | 2006-02-24 | Giat Ind Sa | Dispositif de deconfinement d'une enveloppe de munition |
US8414718B2 (en) * | 2004-01-14 | 2013-04-09 | Lockheed Martin Corporation | Energetic material composition |
DE102004020838B3 (de) * | 2004-04-08 | 2005-06-23 | Nico-Pyrotechnik Hanns-Jürgen Diederichs GmbH & Co. KG | Patronenmunition, insbesondere mit mittlerem Kaliber |
US7373885B2 (en) * | 2005-10-28 | 2008-05-20 | Lockheed Martin Corporation | Device for venting a container housing an energetic material and method of using same |
ES2362434T3 (es) * | 2006-01-17 | 2011-07-05 | Saab Ab | Dispositivo de liberación de la presión interna para munición antiblindaje. |
WO2008097241A2 (fr) * | 2006-05-30 | 2008-08-14 | Lockheed Martin Corporation | Ogive à effet sélectionnable |
US8250985B2 (en) | 2006-06-06 | 2012-08-28 | Lockheed Martin Corporation | Structural metallic binders for reactive fragmentation weapons |
US7472653B1 (en) * | 2006-06-15 | 2009-01-06 | United States Of America As Represented By The Secretary Of The Navy | Insensitive munitions warhead explosive venting system |
DE102007025981A1 (de) * | 2007-06-04 | 2008-12-11 | Rheinmetall Waffe Munition Gmbh | Patronenmunition, insbesondere Übungsmunition |
FR2928917B1 (fr) * | 2008-03-21 | 2010-09-24 | Eurenco France | Revetement de finition inflammable pour chargement pyrotechnique; composition liquide precurseur dudit revetement |
US7886667B1 (en) * | 2008-10-15 | 2011-02-15 | The United States Of America As Represented By The Secretary Of The Army | More safe insensitive munition for producing a controlled fragmentation pattern |
US8276516B1 (en) | 2008-10-30 | 2012-10-02 | Reynolds Systems, Inc. | Apparatus for detonating a triaminotrinitrobenzene charge |
US8925463B1 (en) | 2009-09-03 | 2015-01-06 | Kms Consulting, Llc | Pressure relief system for gun fired cannon cartridges |
FR2981443B1 (fr) | 2011-10-17 | 2013-11-29 | Sme | Generateur de gaz muni d'un organe de securite pour les cas d'echauffements lents |
DE102014015877B3 (de) | 2014-10-24 | 2015-08-20 | TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH | Einrichtung zur steuerbaren Druckentlastung eines Wirksystemes |
WO2016171794A1 (fr) | 2015-03-02 | 2016-10-27 | Nostromo Holdings, Llc | Ensemble charge militaire bimodal à faibles dommages collatéraux |
US10760887B2 (en) | 2016-05-12 | 2020-09-01 | Goodrich Corporation | Detonation transfer assembly |
US10724836B1 (en) * | 2016-12-15 | 2020-07-28 | The United States Of America, As Represented By The Secretary Of The Navy | Cook-off mitigation systems |
US10088285B1 (en) * | 2016-12-15 | 2018-10-02 | The United States Of America As Represented By The Secretary Of The Navy | Cook-off mitigation systems using an uncanistered outgassing pad |
US10101139B1 (en) * | 2016-12-15 | 2018-10-16 | The United States Of America As Represented By The Secretary Of The Navy | Cook-off mitigation systems |
US10801822B2 (en) * | 2018-06-29 | 2020-10-13 | Goodrich Corporation | Variable stand-off assembly |
CN109184954B (zh) * | 2018-07-24 | 2021-03-12 | 北京理工大学 | 一种降低固体发动机慢速烤燃响应程度的助剂 |
US10746520B1 (en) | 2018-10-24 | 2020-08-18 | The United States Of America As Represented By The Secretary Of The Navy | Thermomechanical active hazard mitigation capsule |
CN111879187A (zh) * | 2020-07-22 | 2020-11-03 | 北京理工大学 | 强约束不敏感侵彻***战斗部结构 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
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BE527369A (fr) * | ||||
FR2086881A5 (fr) * | 1970-04-13 | 1971-12-31 | France Etat | |
FR2319602A1 (fr) * | 1975-07-30 | 1977-02-25 | Poudres & Explosifs Ste Nale | Nouvel explosif composite moule thermostable et procede de fabrication |
US4270455A (en) * | 1979-01-02 | 1981-06-02 | Atlas Powder Company | Blasting cap booster assembly |
FR2545478B1 (fr) * | 1983-05-03 | 1985-07-05 | Commissariat Energie Atomique | Composition explosive moulable a froid et son procede de preparation |
FR2599134B1 (fr) * | 1986-05-23 | 1988-08-26 | Matra | Tete militaire pour engin |
US4907509A (en) * | 1988-07-01 | 1990-03-13 | The United States Of America As Represented By The United States Department Of Energy | Bonfire-safe low-voltage detonator |
US5187319A (en) * | 1990-09-20 | 1993-02-16 | Societe Nationale Des Poudres Et Explosifs | Low vulnerability component of explosive ammunition and process for initiating a charge of low-sensitivity composite explosive |
US5320043A (en) * | 1990-10-17 | 1994-06-14 | Snpe Inc. | Low-vulnerability explosive munitions element including a multicomposition explosive charge, and method for obtaining a blast and/or bubble effect |
IL108819A (en) | 1994-03-02 | 1996-12-05 | Armament Dev Authority | Rocket motor protection device during slow cook-off test |
US5786544A (en) | 1994-03-02 | 1998-07-28 | State of Israel--Ministry of Defence, Armament Development Authority, Rafael | Warhead protection device during slow cook-off test |
US6186069B1 (en) | 1998-04-09 | 2001-02-13 | Ensign-Bickford (South Africa Proprietary) Limited | Explosives booster |
-
2001
- 2001-07-13 FR FR0109374A patent/FR2827376B1/fr not_active Expired - Fee Related
-
2002
- 2002-06-19 DE DE60202645T patent/DE60202645T2/de not_active Expired - Lifetime
- 2002-06-19 US US10/173,797 patent/US6615737B2/en not_active Expired - Lifetime
- 2002-06-19 EP EP02291530A patent/EP1275930B1/fr not_active Expired - Lifetime
- 2002-06-24 IL IL150378A patent/IL150378A/en not_active IP Right Cessation
- 2002-06-26 AU AU50651/02A patent/AU783637B2/en not_active Ceased
- 2002-07-09 ZA ZA200205465A patent/ZA200205465B/xx unknown
- 2002-07-11 NO NO20023350A patent/NO323566B1/no not_active IP Right Cessation
- 2002-07-11 JP JP2002202869A patent/JP3934496B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP1275930A1 (fr) | 2003-01-15 |
US20030010246A1 (en) | 2003-01-16 |
FR2827376B1 (fr) | 2003-12-05 |
AU783637B2 (en) | 2005-11-17 |
AU5065102A (en) | 2003-01-16 |
US6615737B2 (en) | 2003-09-09 |
DE60202645T2 (de) | 2005-12-29 |
IL150378A (en) | 2006-12-10 |
NO20023350D0 (no) | 2002-07-11 |
FR2827376A1 (fr) | 2003-01-17 |
NO323566B1 (no) | 2007-06-11 |
ZA200205465B (en) | 2003-09-04 |
JP3934496B2 (ja) | 2007-06-20 |
IL150378A0 (en) | 2002-12-01 |
NO20023350L (no) | 2003-01-14 |
DE60202645D1 (de) | 2005-02-24 |
JP2003104789A (ja) | 2003-04-09 |
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