EP0774642A1 - Dispersions- oder Auftragungsverfahren eines aktiven Materials, Zusammensetzung und Gemäss diesem Verfahren hergestelltes Geschoss - Google Patents
Dispersions- oder Auftragungsverfahren eines aktiven Materials, Zusammensetzung und Gemäss diesem Verfahren hergestelltes Geschoss Download PDFInfo
- Publication number
- EP0774642A1 EP0774642A1 EP96402458A EP96402458A EP0774642A1 EP 0774642 A1 EP0774642 A1 EP 0774642A1 EP 96402458 A EP96402458 A EP 96402458A EP 96402458 A EP96402458 A EP 96402458A EP 0774642 A1 EP0774642 A1 EP 0774642A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- composition
- mass
- projectile
- powder
- active material
- 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.)
- Granted
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 125
- 239000011149 active material Substances 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000006185 dispersion Substances 0.000 claims abstract description 27
- 230000009974 thixotropic effect Effects 0.000 claims abstract description 27
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 99
- 239000000843 powder Substances 0.000 claims description 63
- 239000000377 silicon dioxide Substances 0.000 claims description 49
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 27
- 239000007789 gas Substances 0.000 claims description 19
- 229920002545 silicone oil Polymers 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 229910001369 Brass Inorganic materials 0.000 claims description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 15
- 239000010951 brass Substances 0.000 claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 13
- 230000000977 initiatory effect Effects 0.000 claims description 11
- 235000002566 Capsicum Nutrition 0.000 claims description 10
- 239000006002 Pepper Substances 0.000 claims description 10
- 241000722363 Piper Species 0.000 claims description 10
- 235000016761 Piper aduncum Nutrition 0.000 claims description 10
- 235000017804 Piper guineense Nutrition 0.000 claims description 10
- 235000008184 Piper nigrum Nutrition 0.000 claims description 10
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 9
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 8
- 239000004917 carbon fiber Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 6
- IMACFCSSMIZSPP-UHFFFAOYSA-N phenacyl chloride Chemical compound ClCC(=O)C1=CC=CC=C1 IMACFCSSMIZSPP-UHFFFAOYSA-N 0.000 claims description 6
- 239000003491 tear gas Substances 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 235000002568 Capsicum frutescens Nutrition 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims 1
- 239000000499 gel Substances 0.000 description 55
- 239000007788 liquid Substances 0.000 description 14
- 239000003380 propellant Substances 0.000 description 10
- 230000000873 masking effect Effects 0.000 description 8
- 238000009826 distribution Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000020 Nitrocellulose Substances 0.000 description 3
- 238000005054 agglomeration Methods 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920001220 nitrocellulos Polymers 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- PXIPVTKHYLBLMZ-UHFFFAOYSA-N Sodium azide Chemical compound [Na+].[N-]=[N+]=[N-] PXIPVTKHYLBLMZ-UHFFFAOYSA-N 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000008240 homogeneous mixture Substances 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229910001487 potassium perchlorate Inorganic materials 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 description 1
- 240000004160 Capsicum annuum Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 206010028813 Nausea Diseases 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000007798 antifreeze agent Substances 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000001687 destabilization Effects 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- GNBHRKFJIUUOQI-UHFFFAOYSA-N fluorescein Chemical compound O1C(=O)C2=CC=CC=C2C21C1=CC=C(O)C=C1OC1=CC(O)=CC=C21 GNBHRKFJIUUOQI-UHFFFAOYSA-N 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000000855 fungicidal effect Effects 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007970 homogeneous dispersion Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002917 insecticide Substances 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 229960000907 methylthioninium chloride Drugs 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000002663 nebulization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- VKJKEPKFPUWCAS-UHFFFAOYSA-M potassium chlorate Chemical compound [K+].[O-]Cl(=O)=O VKJKEPKFPUWCAS-UHFFFAOYSA-M 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000009528 severe injury Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000002557 soporific effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000003466 welding Methods 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
- F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
- F42B5/02—Cartridges, i.e. cases with charge and missile
- F42B5/145—Cartridges, i.e. cases with charge and missile for dispensing gases, vapours, powders, particles or chemically-reactive substances
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H9/00—Equipment for attack or defence by spreading flame, gas or smoke or leurres; Chemical warfare equipment
Definitions
- the technical field of the invention is that of methods for applying or dispersing an active material.
- Active material will be understood to mean a material fulfilling a certain function when it is applied to a target or else dispersed over an area of ground.
- the active materials are used either in the form of a powder or in the form of a liquid.
- the liquids are generally dispersed by means of a pressurized gas, which requires the implementation of security and seals for storage.
- compositions in liquid form also poses sealing problems.
- the active material is a powder mixed with a carrier liquid
- the active material is a powder mixed with a carrier liquid
- there is a risk of settling of the powder which affects the effectiveness of the dispersion.
- the patent FR2669625 thus describes a device for dispersing a material for masking infrared radiation, a device in which the masking material is a brass powder mixed with a carrier liquid which is gas oil.
- This dispersing device includes an agitator making it possible to homogenize the mixture of brass and gas oil before dispersing by a flow of hot air.
- the method according to the invention makes it possible in particular to ensure the homogeneity of the composition during prolonged storage phases. This ensures a better distribution in space of the active material during the dispersion.
- the method according to the invention also facilitates the implementation of the dispersion since it eliminates any risk of agglomeration of the active material and eliminates the sealing problems.
- the invention also relates to a dispersible composition comprising an active material.
- This composition does not have the drawbacks of known compositions in which the active material is used either in the form of dry powder blocks or in the liquid form (or of suspension of powder in a liquid).
- the invention finally relates to a projectile allowing the implementation of the method according to the invention.
- the projectile according to the invention is of simple design, inexpensive and particularly well suited to small calibers (projectile diameter less than 75mm).
- the projectile according to the invention also makes it possible to easily control the instant of dispersion of the composition on the trajectory as well as its distribution area.
- the subject of the invention is a process for dispersing or applying an active material, a process which is characterized in that the material is incorporated beforehand active with a thixothropic gel so as to produce a composition and in that, when it is dispersed or applied, this composition is subjected to mechanical stress so as to modify its viscosity and to cause dispersion or application .
- the constraint can be obtained by the increase in pressure due to the initiation of a pyrotechnic composition.
- the stress can be obtained by the displacement of a piston.
- the stress can result from a displacement by inertia of the composition.
- the subject of the invention is also a composition dispersible over a ground area or applicable to an object and comprising at least one active material, composition which is characterized in that the active material or materials are incorporated in a thixotropic gel.
- the gel may be composed of ultra dispersed silica mixed with water, alcohol, glycerol or else silicone oil.
- the active material may be a metallic powder, the particle size of which may be between 1 micron and 15 microns.
- composition according to the invention may consist of 3% to 10% by mass of ultra dispersed silica powder, 80% to 90% by mass of water and 1% to 2% by mass of brass powder.
- composition according to the invention may consist of 3% to 10% by mass of ultra dispersed silica powder, 80% to 90% by mass of alcohol and 1% to 2% by mass of brass powder.
- composition according to the invention may consist of: 3% to 10% by mass of ultra dispersed silica powder, 80% to 90% by mass of silicone oil and 1% to 2% by mass of brass powder.
- the material active can be a carbon powder or carbon fibers.
- composition according to the invention may consist of 3% to 10% by mass of ultra dispersed silica powder, 80% to 90% by mass of water, 1% to 2% by mass of powder or fibers of carbon.
- composition according to the invention may consist of 3% to 10% by mass of ultra dispersed silica powder, 80% to 90% by mass of alcohol and 1% to 2% by mass of carbon powder or fibers .
- composition according to the invention may consist of 3% to 10% by mass of ultra dispersed silica powder, 80% to 90% by mass of silicone oil and 1% to 2% by mass of carbon fiber or powder .
- the active material may be an incapacitating material.
- the incapacitating material may be pepper or chili powder.
- composition according to the invention may consist of 3% to 10% by mass of ultra dispersed silica powder, 80% to 90% by mass of silicone oil and 1% to 2% by mass of powdered pepper.
- the incapacitating material may be a tear gas composition.
- a composition according to the invention may consist of 3% to 10% by mass of ultra dispersed silica powder, 80% to 90% by mass of isopropyl alcohol and 1% to 2% by mass of tear gas composition.
- the active material may be a dye.
- composition according to the invention may consist of 3% to 10% by mass of ultra dispersed silica powder, 80% to 90% by mass of water and 1% to 2% by mass of dye.
- the invention also relates to a projectile implementing such a dispersion method.
- This projectile comprises an envelope inside which the composition is placed, and it comprises means for dispersing triggered at a given time on the trajectory and which cause the composition to move relative to the envelope so as to ensure its liquefaction and its ejection out of the envelope.
- the dispersing means may cause the composition to move with a speed having the same direction as the speed of the projectile or with a speed having a direction opposite to that of the speed of the projectile.
- the dispersing means may include a gas-generating pyrotechnic composition.
- the dispersing means may comprise a piston placed between the pyrotechnic gas-generating composition and the composition to be dispersed.
- the dispersing means may also include braking means ensuring a sudden deceleration of the projectile on the trajectory, the composition then being driven by inertia out of the envelope.
- This particular embodiment ensures a distribution of the composition in front of the projectile while reducing the risks of seeing the projectile body impact the target.
- the braking means may comprise a pyrotechnic composition generating gas ejecting the gases out of the envelope in a direction substantially the same as that of the speed of the projectile.
- the braking means will comprise a wire fixed at the rear part of the envelope and connected to a fixed launching system.
- the dispersing means may in all cases comprise a piston sliding by inertia in the envelope so as to come to drive the composition to be dispersed.
- a peripheral portion of the piston may cooperate with the envelope by a helical connection in such a way that the translation of the piston also causes it to rotate relative to the envelope.
- the envelope will advantageously be closed by a grid at one of its ends on which the composition is pushed.
- a munition 1 is shown schematically; it comprises a substantially cylindrical casing 2, integral with a bottom partition 2a.
- Ammunition 1 is intended to be launched by a weapon not shown, for example by a launch tube secured to a vehicle to be protected (patent FR2612287 describes such a launch tube).
- the envelope is closed by a plug 3 which is returned united for example by bonding or welding.
- the envelope 2 will advantageously be produced in one piece with the partition 2a and in a plastic material, for example polyethylene or polypropylene.
- the plug 3 carries a case 6a containing a gas-generating pyrotechnic composition 6 of known type as well as initiation means 8a thereof (not shown in detail).
- the gas-generating pyrotechnic composition will preferably be a composition providing a large volume of gas with a limited rise in temperature, for example a composition based on sodium azide.
- compositions are used in the automotive field to ensure the inflation of the airbags.
- a pyrotechnic composition combining boron and potassium nitrate (KNO3) for example in the proportions by mass of 20 to 27% of boron for 80 to 73% of KNO3.
- KNO3 pyrotechnic composition combining boron and potassium nitrate
- KClO4 composition associating Nitrocellulose and potassium chlorate (KClO4), for example in the proportions by mass of 10 to 30% of Nitrocellulose for 90 to 70% of KClO4.
- the initiation means will include a primer as well as an initiation device thereof after a certain period of time after the launch of the munition.
- a primer as well as an initiation device thereof after a certain period of time after the launch of the munition.
- the envelope 2 contains a composition 5 which comprises an active material incorporated in a thixotropic gel.
- composition 5 can be separated from the gas generator 6 by a layer of a compressible material 22, such as a polyurethane foam.
- the compressible material 22 is intended to possibly make up for the clearances during assembly of the munition and to absorb any expansions of the composition 5 caused by temperature variations.
- a thixotropic gel is a gel which is normally in the frozen state, but which becomes liquid when it is subjected to a mechanical stress of a certain level.
- Such gels are known in the field for example of the food industry.
- the invention proposes to use them as a support for an active material.
- the gas-generating pyrotechnic composition 6 After firing, and at the end of a time interval (defined for example by programming an electronic delay), the gas-generating pyrotechnic composition 6 is initiated.
- the gases cause a strong increase in pressure inside the envelope 2. This increase in pressure has the effect, on the one hand of liquefying the thixotropic gel 5, and on the other hand of bursting the envelope 2 (which may advantageously be provided with primers for annular and / or longitudinal breaks 23).
- the frozen state also eliminates sealing problems during the design of the ammunition.
- the means for applying the mechanical stress will also be defined according to the dimensions of the desired dispersion cloud and the volume of composition used. Those skilled in the art will easily define the energy required by means of tests.
- the envelope will be dimensioned so as to ensure sufficient initial confinement and the fracture primers will be defined according to the desired distribution for the active material.
- the thixotropic gel can be composed of ultra dispersed silica and water.
- ultra dispersed silica is meant a silica with a very small particle size (of the order of a hundredth of a micron).
- This silica is incorporated into water in the following proportions: 3% to 7% by mass of water for 97 to 93% by mass of silica.
- the proportions will be defined as a function of the viscosity desired for the gel, a viscosity which will depend on the nature of the active material incorporated into the gel.
- Silica is particularly advantageous because it is very inexpensive and very chemically inert, which makes it possible to easily add active materials of various compositions to such a gel.
- an antifreeze agent such as an alcohol
- water In order to avoid solidification of the gel at low temperatures, an antifreeze agent, such as an alcohol, can be mixed with water.
- thixotropic gel by incorporating ultra-dispersed silica with an ethyl or isopropyl alcohol.
- This variant makes it possible to avoid oxidation of the active material by the gel.
- the following proportions will preferably be chosen: 3% to 7% by mass of silicone oil for 97 to 93% by mass of silica.
- Such a gel has the advantage of being absolutely non-toxic and of having excellent chemical compatibility with most active materials.
- the thixotropic gel constitutes the support for an active material which one seeks to disperse.
- the ultra dispersed silica and the brass powder will first be mixed so as to obtain a homogeneous mixture, then the alcohol will be incorporated with stirring so as to obtain the gel.
- composition obtained can be passed through a grinder to ensure its homogenization.
- a masking composition with infrared rays using as active material a carbon powder, the particle size of which is between 1 micron and 15 microns.
- the carbon grains are coated with silica particles which prevents their agglomeration and improves the masking performance.
- a decoy material for example aluminized glass fibers of 1 to 4 mm long or 1 to 4 mm long carbon fibers.
- an incapacitating active material will be incorporated into the thixotropic gel.
- incapacitating material a material capable of put a person out of action without inflicting severe damage on them.
- This category includes tear gas, soporific or nausea-causing materials in this category.
- Pepper or chilli powder may be used as the active material.
- the thixotropic gel will be made with non-toxic components (for example isopropyl alcohol or silicone oil).
- composition in which the active material is in a liquid form.
- CS Ortho-Chlorobenzylidènemalonitrile
- the tear gas composition used may be only partially soluble in alcohol.
- the liquid active material will be mixed with the alcohol and then the ultra dispersed silica will be added.
- a dye may be chosen as the active material.
- the dye will preferably be a dye soluble in the liquid phase used (water, alcohol or silicone oil), but it could also be in suspension.
- Such a variant makes it possible to ensure the marking of an objective in order to facilitate its subsequent recognition. For example the marking of suspects in law enforcement operations or the marking of vehicles or targets to facilitate their subsequent attack by ammunition.
- composition and the color of the dye will of course be chosen according to the desired effects (indelible character, fluorescent ).
- composition comprising a thixotropic gel in an individual or remote-controlled spraying equipment, for example a cylinder pierced at one end and provided at the other end with a piston maneuverable by the user.
- the gel can then be sprayed in a preferred direction which is the axis of the cylinder.
- the spray piston can be used for the dispersion of a particular thixotropic gel in which is incorporated an active material intended for the treatment of plants (pesticide, fungicide, insecticide ).
- the invention then makes it possible to ensure a homogeneous dispersion without requiring the use of propellant gases harmful to the environment.
- the disperser used does not drip which facilitates use.
- a similar piston could be used with a gel carrying a dye to facilitate the marking of animals, trees or even roads (during public works operations).
- Such a pen will have a porous or tubular lead resting like a piston on the gel.
- the lead is pressed on a surface by the user. It then exerts a stress on the coloring gel which liquefies it and allows it to flow out of the pen.
- Such a pen can write on any surface and with any orientation.
- FIG. 2 represents another embodiment of a projectile according to the invention.
- This projectile 1 comprises a cylindrical casing 2 which is closed at one of its ends by a bottom 3 and at the other end by a grid 4.
- the envelope 2 is made for example of resistant plastic material such as polyamide. It contains a composition 5 which is a thixotropic gel of the type of those described above.
- the thixotropic gel incorporates an active material, the nature of which will depend on the objective sought.
- an incapacitating material for example pepper or chili powder or a tear material.
- pepper and silica will be mixed homogeneously before adding the alcohol.
- the piston 7 is slidably mounted in the casing 2. It carries at its periphery an O-ring seal 9.
- the other end of the envelope 2 is closed by a grid 4, fixed to the envelope by gluing or crimping, and the mesh dimensions of which will be chosen according to the viscosity (static and dynamic) of the composition to be dispersed and the dimensions of the active material incorporated in the gel.
- a grid will be practically chosen, the mesh dimensions of which are 20% greater than the particle size of the active material.
- a split elastic ring 11 is placed in an annular groove in the envelope 2. This ring makes it possible to prevent ejection of the piston 7 from the envelope 2 during the operation of the projectile.
- the initiation means 8 are programmed by introducing the delay at the end of which the dispersion must be carried out.
- the gas-generating pyrotechnic composition 6 is initiated.
- the gases cause a strong increase in pressure inside the envelope 2.
- the pressure is exerted on the piston 7 which pushes the gel 5 against the grid 4.
- the pressure has the effect of liquefying the thixotropic gel 5.
- it is a liquid material which is pushed through the grid 4 and which disperses in the form of fine droplets transporting the active material.
- the paper 10 is torn by pressure.
- the piston is retained by the ring 11 and does not come out of the envelope 2. In the case of use of the law enforcement type, there is therefore no risk of injuring the target people
- the gas pressure generally sufficient to expel the gel.
- the piston has the advantage of isolating the gel to disperse propellant gases, which prevents it from heating or degrading.
- the projectile shown in Figure 1 can be fired in two different directions.
- composition is ejected out of the envelope with a speed having the same direction as the speed of the projectile.
- the gel ejection speed 5 is then the result of the speed of the projectile and that communicated by the gas-generating pyrotechnic composition 6.
- Such an embodiment allows the composition to be dispersed more widely.
- the projectile 1 can on the contrary be fired with an opposite orientation and be then animated with a speed V2 such that the grid 4 is behind on its trajectory.
- the composition is ejected out of the envelope with a speed having a direction opposite to that of the speed of the projectile.
- FIG. 3 represents a projectile according to a third embodiment.
- the projectile comprises a base 12 which has the form of a box delimiting an internal housing which contains a propellant charge 13.
- the box is closed by a screwed cover 14 which carries means 8 for initiating the charge propellant.
- the propellant charge 13 constitutes a means of braking the projectile 1 on its trajectory.
- the initiation means 8 will include a programmable electronic time rocket.
- the propellant charge 13 may be a gas-generating pyrotechnic composition of the type described above.
- propellant powder based on nitrocellulose or a propellant block.
- the internal housing of the housing 12 communicates with the outside of the projectile 1 by channels 15, inclined relative to the axis 16 of the projectile 15.
- This projectile is intended to be fired with an orientation such that the casing is behind the trajectory.
- the projectile is then driven at a speed V1, the orientation of which is given in FIG. 2.
- the channels 15 are regularly angularly distributed and are oriented towards the front of the projectile.
- the envelope 2 of the projectile is glued to the base 12. It is closed at its front part by a grid 4 closed by a sheet 10.
- Envelope 2 contains a thixotropic gel 5.
- a piston 7 is placed in abutment against the housing 12, it carries on its peripheral rim a seal 9.
- the projectile is animated on the trajectory of a certain speed V1.
- the propellant charge 13 is initiated.
- the propellant charge will be dimensioned so as to ensure brutal braking (deceleration of the order of 2000 to 17000 m / s 2 ).
- the piston liquefies the thixotropic gel 5 and causes it to be ejected from the envelope through the grid 4 which ensures the nebulization of the material 5.
- piston 7 it is possible, as a variant, not to provide for piston 7.
- the only inertia of the gel 5, applied brutally against the grid 4 during the deceleration of the projectile, will be enough to liquefy it and disperse it through the grid 4.
- patent FR2704054 the whole description of which is included here by reference, and which describes in detail an aerodynamic projectile braking device using an airbag.
- the bag and the gas generator will be dimensioned so as to provide the sudden deceleration necessary for the dispersion of the gel 5 by inertia.
- braking means for example aerodynamic braking produced by fins, folded back on the trajectory along the envelope of the projectile and the deployment of which is controlled by the initiation means 8.
- Figure 4 shows a preferred embodiment of the invention.
- the projectile 1 comprises an envelope 2, produced for example by molding of polyamide, and which is provided with a bottom 2a.
- the envelope is closed at its end by a grid 4 covered with the sealing sheet 10.
- It contains a thixotropic gel 5 incorporating an active material.
- the bottom 2a of the envelope carries an axial extension 18 on which a wire 19 is fixed.
- the other end of the wire 19 is connected to a fixed launching system 20.
- the wire constitutes here the means of braking of the projectile on trajectory.
- the launch system 20 shown here is a tube placed on the ground. It could also consist of a portable weapon held by a shooter.
- the length of wire 19 is determined as a function of the distance at which it is desired to carry out the dispersion.
- the wire 19 stretches and causes a sudden braking of the projectile.
- This embodiment is particularly inexpensive because of the low number of parts used and the absence of an electronic rocket.
- Figure 5 is a variant of the previous in which a piston 7 is provided inside the casing 2.
- the inertia of the piston pushes the gel against the grid.
- This variant is preferred when the inertia of the gel is insufficient to ensure its complete dispersion during braking. It is possible, by varying the mass of the piston, to modulate the speed of ejection of the material, therefore the spatial characteristics of the dispersion.
- Figures 6a and 6b show an alternative embodiment in which the inner surface of the casing 2 carries three helical ramps 21a, 21b and 21c offset by 120 ° from each other.
- the translation of the piston is also accompanied by its rotation relative to the envelope.
- a dye may also be incorporated into the thixotropic gel to allow target labeling.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Air Bags (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9513635A FR2741434B1 (fr) | 1995-11-17 | 1995-11-17 | Procede de dispersion ou d'application d'un materiau actif et composition mise en oeuvre pour un tel procede |
| FR9513634A FR2741435B1 (fr) | 1995-11-17 | 1995-11-17 | Projectile permettant la dispersion d'un produit sur trajectoire |
| FR9513635 | 1995-11-17 | ||
| FR9513634 | 1995-11-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0774642A1 true EP0774642A1 (de) | 1997-05-21 |
| EP0774642B1 EP0774642B1 (de) | 2000-05-31 |
Family
ID=26232332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19960402458 Expired - Lifetime EP0774642B1 (de) | 1995-11-17 | 1996-11-15 | Dispersions- oder Auftragungsverfahren eines aktiven Materials, Zusammensetzung und Gemäss diesem Verfahren hergestelltes Geschoss |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0774642B1 (de) |
| DE (1) | DE69608644T2 (de) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998039064A1 (de) * | 1997-03-04 | 1998-09-11 | Nebel, Anita | Explosive feuerlöschvorrichtung |
| EP0890819A1 (de) * | 1997-07-09 | 1999-01-13 | Giat Industries | Munition zur Farbmarkierung |
| EP2549221A3 (de) * | 2011-07-20 | 2015-05-13 | Rheinmetall Waffe Munition GmbH | Munition |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020004562B4 (de) | 2020-07-28 | 2024-04-18 | Franz Drexler | Reizstoffpatronen 40 mm und 1,5 Zoll |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1264427A (de) * | 1968-04-30 | 1972-02-23 | ||
| US3964393A (en) * | 1974-06-21 | 1976-06-22 | The United States Of America As Represented By The Secretary Of The Navy | Igniter |
| US4187129A (en) * | 1962-05-14 | 1980-02-05 | Aerojet-General Corporation | Gelled mechanically stable high energy fuel composition containing metal platelets |
| FR2601945A1 (fr) * | 1986-07-25 | 1988-01-29 | Mulleman Michel | Procede de realisation d'un gel incendiaire, et gel incendiaire obtenu par ce procede |
| FR2610085A1 (fr) * | 1987-01-26 | 1988-07-29 | Matra Manurhin Defense | Emetteur infrarouge, notamment a usage de leurre, et cartouche lance-leurre infrarouge pour sa mise en oeuvre |
| FR2612287A1 (fr) | 1987-03-12 | 1988-09-16 | France Etat Armement | Projectile fumigene et munition ainsi equipee |
| WO1991007635A1 (en) * | 1989-11-21 | 1991-05-30 | Saab Missiles Aktiebolag | Projectile for the dispersal of a load in the form of a pyrotechnic charge |
| US5062367A (en) | 1988-12-05 | 1991-11-05 | Nippon Koki, Co., Ltd. | Air bag inflation gas generator |
| FR2669625A1 (fr) | 1990-11-22 | 1992-05-29 | Giat Ind Sa | Materiau de masquage efficace dans le domaine infra rouge. |
| US5123657A (en) * | 1991-12-09 | 1992-06-23 | Colt Larry D | Arrow for use by a bow hunter for attracting game |
| EP0509655A1 (de) | 1991-04-16 | 1992-10-21 | Morton International, Inc. | Trennungsfreie Gaserzeugungszusammensetzung, bestehend aus lose aufgehäuften azidhaltige Pellets und dazwischen angeordneten kleinen silikatischen Partikel |
| EP0525305A1 (de) * | 1991-07-31 | 1993-02-03 | Buck Werke GmbH & Co | Selbstschutz-Werfereinrichtung |
| FR2691706A1 (fr) | 1992-06-02 | 1993-12-03 | Livbag Snc | Générateur pyrotechnique de gaz muni d'une ouverture de sécurité. |
| FR2706202A1 (fr) * | 1993-06-08 | 1994-12-16 | Lacroix E Tous Artifices | Dispositif d'éjection simultanée de deux fluides, notamment pyrotechniques. |
-
1996
- 1996-11-15 EP EP19960402458 patent/EP0774642B1/de not_active Expired - Lifetime
- 1996-11-15 DE DE1996608644 patent/DE69608644T2/de not_active Expired - Fee Related
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4187129A (en) * | 1962-05-14 | 1980-02-05 | Aerojet-General Corporation | Gelled mechanically stable high energy fuel composition containing metal platelets |
| GB1264427A (de) * | 1968-04-30 | 1972-02-23 | ||
| US3964393A (en) * | 1974-06-21 | 1976-06-22 | The United States Of America As Represented By The Secretary Of The Navy | Igniter |
| FR2601945A1 (fr) * | 1986-07-25 | 1988-01-29 | Mulleman Michel | Procede de realisation d'un gel incendiaire, et gel incendiaire obtenu par ce procede |
| FR2610085A1 (fr) * | 1987-01-26 | 1988-07-29 | Matra Manurhin Defense | Emetteur infrarouge, notamment a usage de leurre, et cartouche lance-leurre infrarouge pour sa mise en oeuvre |
| FR2612287A1 (fr) | 1987-03-12 | 1988-09-16 | France Etat Armement | Projectile fumigene et munition ainsi equipee |
| US5062367A (en) | 1988-12-05 | 1991-11-05 | Nippon Koki, Co., Ltd. | Air bag inflation gas generator |
| WO1991007635A1 (en) * | 1989-11-21 | 1991-05-30 | Saab Missiles Aktiebolag | Projectile for the dispersal of a load in the form of a pyrotechnic charge |
| FR2669625A1 (fr) | 1990-11-22 | 1992-05-29 | Giat Ind Sa | Materiau de masquage efficace dans le domaine infra rouge. |
| EP0509655A1 (de) | 1991-04-16 | 1992-10-21 | Morton International, Inc. | Trennungsfreie Gaserzeugungszusammensetzung, bestehend aus lose aufgehäuften azidhaltige Pellets und dazwischen angeordneten kleinen silikatischen Partikel |
| EP0525305A1 (de) * | 1991-07-31 | 1993-02-03 | Buck Werke GmbH & Co | Selbstschutz-Werfereinrichtung |
| US5123657A (en) * | 1991-12-09 | 1992-06-23 | Colt Larry D | Arrow for use by a bow hunter for attracting game |
| FR2691706A1 (fr) | 1992-06-02 | 1993-12-03 | Livbag Snc | Générateur pyrotechnique de gaz muni d'une ouverture de sécurité. |
| FR2706202A1 (fr) * | 1993-06-08 | 1994-12-16 | Lacroix E Tous Artifices | Dispositif d'éjection simultanée de deux fluides, notamment pyrotechniques. |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998039064A1 (de) * | 1997-03-04 | 1998-09-11 | Nebel, Anita | Explosive feuerlöschvorrichtung |
| EP0890819A1 (de) * | 1997-07-09 | 1999-01-13 | Giat Industries | Munition zur Farbmarkierung |
| FR2765869A1 (fr) * | 1997-07-09 | 1999-01-15 | Giat Ind Sa | Composition de marquage et munition d'exercice mettant en oeuvre une telle composition |
| US6155174A (en) * | 1997-07-09 | 2000-12-05 | Giat Industries | Color marker munition |
| EP2549221A3 (de) * | 2011-07-20 | 2015-05-13 | Rheinmetall Waffe Munition GmbH | Munition |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0774642B1 (de) | 2000-05-31 |
| DE69608644D1 (de) | 2000-07-06 |
| DE69608644T2 (de) | 2000-09-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0946853B1 (de) | Geschoss mit kontrollierter verformung | |
| EP0583176B1 (de) | Infrarotscheinziel mit Leitwerkstabilisierung und Eigenantrieb | |
| FR2579317A1 (fr) | Amorce pyrotechnique/explosive | |
| EP2923171B1 (de) | Rotationsstabilisiertes geschoss mit ausstoss einer nutzlast | |
| EP0675336A1 (de) | Geschoss, insbesondere nicht tötende Patrone | |
| EP1734333B1 (de) | Munition oder Munitionsteil das die Form eines Flugkörpers wie einer Drohne hat | |
| EP0774642B1 (de) | Dispersions- oder Auftragungsverfahren eines aktiven Materials, Zusammensetzung und Gemäss diesem Verfahren hergestelltes Geschoss | |
| EP0457657A1 (de) | Durchdringendes Geschoss | |
| FR2844046A1 (fr) | Dispositif consommable emetteur de rayonnement infrarouge pour leurre | |
| FR2741435A1 (fr) | Projectile permettant la dispersion d'un produit sur trajectoire | |
| FR2789484A1 (fr) | Dispositif de defense a letalite reduite | |
| FR2741434A1 (fr) | Procede de dispersion ou d'application d'un materiau actif et composition mise en oeuvre pour un tel procede | |
| FR2642157A1 (fr) | Dispositif de production rapide d'une nappe fumigene | |
| RU2106595C1 (ru) | Капсула защитного средства | |
| FR2811420A1 (fr) | Projectile pour le declenchement d'avalanches | |
| FR2765961A1 (fr) | Fusee de leurre infrarouge pour helicoptere | |
| EP0557200B1 (de) | Verfahren und Vorrichtung zum Unschädlichmachen einer Bedrohung durch Freigabe eines Neutralisationsmittels | |
| EP0916921B1 (de) | Munition zum Wegräumen von Minen | |
| FR2947046A1 (fr) | Tete militaire comportant des moyens de marquage de cible | |
| FR3071702A1 (fr) | Procede de destruction d'une population de frelons asiatiques dans leur nid | |
| FR2591735A1 (fr) | Generateur pyrotechnique de gaz et utilisation dans un dispositif ejecteur de sous-munitions d'une charge militaire | |
| FR2742539A1 (fr) | Charge explosive a usages multiples, notamment charge de deminage | |
| FR2800867A1 (fr) | Cartouche permettant la projection d'un liquide, procede et outillage de montage d'une telle cartouche | |
| FR2992409A1 (fr) | Munition non letale a portee accrue | |
| CA2259454C (fr) | Munition non letale notamment a effet incapacitant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): BE CH DE ES GB IT LI NL |
|
| 17P | Request for examination filed |
Effective date: 19970618 |
|
| 17Q | First examination report despatched |
Effective date: 19990315 |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): BE CH DE ES GB IT LI NL |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20000531 Ref country code: ES Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 20000531 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: DIPL.-ING. ETH H. R. WERFFELI PATENTANWALT Ref country code: CH Ref legal event code: EP |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20000531 |
|
| ITF | It: translation for a ep patent filed | ||
| REF | Corresponds to: |
Ref document number: 69608644 Country of ref document: DE Date of ref document: 20000706 |
|
| NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20061027 Year of fee payment: 11 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20061130 Year of fee payment: 11 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20071130 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20071130 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20081126 Year of fee payment: 13 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20081031 Year of fee payment: 13 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20081029 Year of fee payment: 13 |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E Free format text: REGISTERED BETWEEN 20090625 AND 20090701 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20071115 |
|
| BERE | Be: lapsed |
Owner name: *GIAT INDUSTRIES Effective date: 20091130 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20091115 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20091130 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100601 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20091115 |