WO2002003014A1 - Projectile pour le declenchement d'avalanches - Google Patents
Projectile pour le declenchement d'avalanches Download PDFInfo
- Publication number
- WO2002003014A1 WO2002003014A1 PCT/FR2001/002082 FR0102082W WO0203014A1 WO 2002003014 A1 WO2002003014 A1 WO 2002003014A1 FR 0102082 W FR0102082 W FR 0102082W WO 0203014 A1 WO0203014 A1 WO 0203014A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- projectile
- envelope
- projectile according
- gas
- triggering
- Prior art date
Links
- 239000007789 gas Substances 0.000 claims description 93
- 238000010304 firing Methods 0.000 claims description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 claims description 20
- 239000002360 explosive Substances 0.000 claims description 18
- 239000005997 Calcium carbide Substances 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 14
- 230000000977 initiatory effect Effects 0.000 claims description 13
- 238000009527 percussion Methods 0.000 claims description 10
- 230000009172 bursting Effects 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 5
- 239000003380 propellant Substances 0.000 claims description 5
- 238000012354 overpressurization Methods 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 239000012781 shape memory material Substances 0.000 claims description 3
- 230000000750 progressive effect Effects 0.000 claims description 2
- 238000004880 explosion Methods 0.000 abstract 2
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 7
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000002408 directed self-assembly Methods 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920000271 Kevlar® Polymers 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 239000006023 eutectic alloy Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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
- F42B12/201—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 target class
- F42B12/204—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 target class for attacking structures, e.g. specific buildings or fortifications, ships or vehicles
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
Definitions
- the technical field of the invention is that of devices, and in particular projectiles, making it possible to trigger an avalanche.
- the known devices allowing the artificial triggering of avalanches are fixed or mobile.
- Patent FR2636729 proposes the permanent installation of a ramp generating an explosive gas oriented towards the slope.
- Other devices generally use a compressed air cannon which launches an explosive projectile triggered by an impact rocket.
- the patent US5872326 describes such a projectile.
- Two-component explosives Two compounds are mixed in a projectile body in the field and before t r. The compounds are harmless individually, which secures transport and storage. The mixture is explosive but becomes inert after 48 h, which eliminates the risks linked to the abandonment on the ground of uninitiated projectiles.
- the projectile according to the invention is simple to implement since it "does not require the production on the ground of an explosive mixture. It can be easily implemented on any type of ground and in particular from launchers lightweight that can be taken by trackers.
- the subject of the invention is a projectile for triggering avalanches and intended to be projected from a launching tube, projectile comprising an envelope intended to burst in the vicinity or in contact with snow by the action of means of triggering to cause an avalanche, projectile characterized in that the envelope is likely to be pressurized during the firing and / or on trajectory the pressurization of the envelope thus obtained being insufficient to ensure on its own bursting of the envelope, other means being provided for overpressurizing the envelope and thus ensuring its bursting.
- the pressurization of the envelope during firing can be obtained by borrowing, inside the launching tube, of a part of the propellant gases used for firing the projectile.
- the pressurization of the envelope during firing and / or on the trajectory can also be obtained with a first gas generating means secured to the projectile and initiated during firing.
- the projectile comprises a piston pushed by the pressure of the gases supplied by the launcher or by the first gas generator and allowing the admission of the gases inside the envelope, piston brought back by a spring return in a closed position ensuring maintenance of the gas pressure inside the envelope.
- This projectile will also include a second gas generating means actuated by the triggering means and making it possible to ensure an overpressurization of the envelope causing it to rupture.
- the gas pressure generated by the second gas generating means will be insufficient to ensure only the rupture of the envelope.
- the second gas generating means may comprise a pyrotechnic composition or a powder charge initiated by the triggering means.
- the triggering means may include a percussive rocket ensuring the initiation of the second gas generating means during the impact on the ground of the projectile.
- the projectile may include a device indicating the combustion of the pyrotechnic composition or of the powder charge.
- the second gas generating means may ensure the generation of a combustible and / or explosive gas which will be initiated on impact by the triggering means.
- the second gas generating means may include calcium carbide which will be mixed with water on the trajectory, the water being contained in a tank which will be opened by opening means actuated during firing.
- the opening means may include a movable plate in translation against the action of a return spring, a counterweight which will be pushed towards the tank by the inertial forces deployed during the firing, and will thus ensure the rupture of the tank.
- the triggering means may include a percussive primer disposed at a front part of the projectile and initiated by a percussion device.
- the first gas generating means can ensure the generation of a combustible and / or explosive gas.
- the first gas generating means may include calcium carbide which will be mixed with water on the trajectory, the water being contained in a tank which will be opened by opening means actuated during firing.
- the opening means may include a piston sliding in the reservoir against the action of a return spring, the piston moving during firing by the action of the pressure of the propellant gases and carrying a needle allowing the perforation of the reservoir. to ensure contact between water and calcium carbide.
- the calcium carbide may be placed in a diffuser tube pierced with radial holes, a tube coaxial with the projectile and placed in the extension of the reservoir.
- the return spring may be made of a shape memory material chosen and configured so that it retracts below a given temperature and thus no longer exerts the same return force on the piston .
- the triggering means may include a percussive primer disposed at a front part of the projectile and initiated by a percussion device.
- the triggering means may comprise at least one detonating cord disposed on an internal surface of the envelope.
- the triggering means may include a primer connected to a delaying means initiated during the firing.
- the projectile may include a controlled leakage device ensuring progressive depressurization of the envelope.
- the controlled leakage device may include at least one cover made of a porous material.
- FIG. 1 shows in simplified longitudinal section a projectile according to a first embodiment of the invention
- the 2 shows in simplified longitudinal section a projectile according to a second embodiment of the invention
- FIG. 3 represents in simplified longitudinal section a projectile according to a third embodiment of the invention.
- FIG. 4 represents an alternative embodiment of the piston used in the third embodiment
- FIG. 5 shows an alternative embodiment of a depressurization cover
- FIG. 6 represents a front part of a projectile according to the third embodiment and equipped with an alternative embodiment of the triggering means
- a projectile 1 according to a first embodiment of the invention comprises an envelope 2 having a front part 2a ogival and a rear part 2b, constituting an aerodynamic stabilizer, and which is formed of a cone 3 followed by a cylindrical part 4.
- the envelope 2 may be made of a metallic material, for example aluminum 3 mm thick, or else of a composite material, for example of a filament wound of carbon fibers ' or Kevlar.
- the casing 2 receives an internal tube 5 which bears by a front bearing 5a on an internal surface of the casing 2 and which has an enlarged rear part 5b which is adjusted at the level of a cylindrical bore 6 of the casing 2.
- the tube 5 will be made for example of plastic or aluminum alloy.
- a stop ring 7 ensures the axial immobilization of the tube 5 relative to the envelope 2.
- the tube 5 has two chambers 8a, 8b separated by a partition 9.
- the rear chamber 8a contains a sliding piston 10 which is pushed by a return spring 11 which abuts against a stop nut 12 screwed inside the tube 5 .
- the piston 10 has a rear sealing lip 10a.
- the axial part of the piston 10 receives a cover 22 made of a porous material, for example sintered bronze.
- This cover 22 constitutes a controlled leakage device making it possible to ensure slow and gradual depressurization of the interior of the envelope 2.
- Radial holes 13 are arranged in the tube 5 between the partition 9 and the piston 10 when the latter is in its rest position shown in FIG. 1 (in abutment against the nut 12).
- the rear chamber 8a can also receive a first gas generating means 19 which will include an igniter 20 initiated by the gases supplied by the launcher system (not shown) and initiating itself a pyrotechnic composition generating gas of known type.
- the front chamber 8b contains a second gas generator means 18 as well as its trigger system 14.
- This comprises a percussion rocket which is not shown here in detail and which comprises in a known manner a security and arming device (or DSA) 15, a striker 16 actuated by inertia during impact on the ground and a punchy primer 17.
- a security and arming device or DSA
- the DSA 15 ensures the locking of the striker 16 during the storage phases. It releases the striker when the projectile is fired and therefore includes an inertia lock (not shown). DSAs are well known to those skilled in the art in the field of armaments and it is therefore not necessary to describe such a DSA in more detail.
- the primer 17 is intended to initiate the second gas generating means 18 which is constituted, for example, by a gas-generating pyrotechnic composition.
- Gas generating compositions are well known to those skilled in the art. We can for example refer to patents US5062367, FR2691706 and EP509655 which describe gas generators usable for motor vehicle safety.
- the second gas generating means may also consist of a charge of propellant powder.
- a device 21 witnessing the initiation of the second gas generating means 18 is arranged at the front part 2a of the casing 2.
- This control device 21 will be constituted for example by an aluminum rivet bearing, arranged at its outside face to the projectile, an axial hole (not shown), not opening, and inside which is placed a fusible material, for example a plastic material (such as polystyrene) or a eutectic alloy.
- a fusible material for example a plastic material (such as polystyrene) or a eutectic alloy.
- the rear face of the rivet 21 is in contact with the composition 18 or a case surrounding it. The heat released by the combustion of this one will ensure the fusion of the fusible material placed in the rivet 21.
- no first gas generating means 19 is provided.
- the projectile 1 is placed in a launch tube (not shown), for example a pneumatic launch tube delivering a gas under pressure, or a light launcher with pyrotechnic charge (for example of the type described by patent FR2576682 ).
- a launch tube for example a pneumatic launch tube delivering a gas under pressure, or a light launcher with pyrotechnic charge (for example of the type described by patent FR2576682 ).
- the pressure of the gases supplied by the launcher is applied to the piston 10 which is pushed against the action of the return spring 11.
- the piston 10 thus releases the holes 13 which allow the gases supplied by the launcher to pass.
- the gas pressure is thus established inside the envelope 2.
- a gas pressure of 400 bars is provided by the launcher which is sufficient to pressurize the interior of the envelope at a pressure of 200 to 300 bars.
- the envelope 2 will be defined so as to be able to withstand the initial pressurization without damage.
- a first gas generator means 19 will be provided. This will be initiated when the projectile is fired, for example by the action of the hot gases supplied by the launcher and applied directly to the igniter 20. It is also possible to provide a system of inertia striker which will cause the initiation of this generator 19 at the time of the firing.
- the first gas generating means 19 will pressurize the envelope 2 according to the mechanism described previously: displacement of the piston 10, entry of the gases into the envelope 2 through the holes 13, return of the piston 10 when the internal pressure in the envelope
- This one is dimensioned so as to ensure an overpressurization of the envelope 2 causing the rupture thereof.
- the bursting of the envelope 2 ensures the triggering of the avalanche.
- an envelope 2 made of aluminum 3mm thick may be provided.
- This envelope will be able to withstand pressure of 300 bars without damage. It will burst for a pressure greater than or equal to 400 bars.
- the initial pressurization provided by the launcher or the first gas generator will ensure the establishment inside the envelope of a pressure of the order of 200 to 300 bars.
- the second gas generator will be dimensioned for example to provide a pressure of the order of 100 bars.
- the gas pressure generated by the second gas generator will be chosen to be insufficient to ensure only the rupture of the envelope.
- the pressure generated will not cause the envelope to rupture. If a witness 21 is provided on the projectile, the accidental triggering of the gas generator 18 will be identified by the melting of the material placed in the initiation witness device. The pressure generated by this second generator will gradually be evacuated through the porous cover
- the porous cover 22 carried by the piston 10 constitutes a controlled leak which makes it possible to gradually depressurize the envelope 2.
- FIG. 2 represents a projectile according to a second embodiment of the invention.
- This projectile differs from the previous one only in the structure of the second gas generating means.
- the second gas generating means is designed so as to ensure the generation of a combustible and / or explosive gas which can be initiated on impact by the triggering means.
- the second gas generating means comprises a housing 23 filled with calcium carbide 24 in the form of granules.
- This calcium carbide is intended to be mixed with water on the trajectory.
- the water is contained in a tank 25 made of plastic or glass which is opened by opening means 26 actuated by inertia during firing.
- An annular wall 27 is disposed in the middle part of the front chamber 8b and it separates the calcium carbide 24 from the water tank 25 and its opening means 26.
- the annular wall is made integral with the tube 5 by elastic rings 28a, 28b.
- the opening means 26 comprise a counterweight 29 movable in translation against the action of a return spring 30 fixed to the annular wall 27.
- This flyweight is pushed towards the reservoir 25 by the inertia forces deployed during the firing, and thus ensures the rupture of the reservoir.
- This opening means is shown here purely for information. Other means of opening by inertia would of course be conceivable. One could for example provide a reservoir 25 which is itself movable in translation during the inertia firing and which comes to impact against a point secured to the partition 9 of the tube 5.
- the mixture of water and calcium carbide causes the generation of acetylene.
- This gas fills the tube 5.
- the relative masses of calcium carbide and water will be chosen by a person skilled in the art so as to generate the desired acetylene gas pressure.
- the quantity of gas will be chosen to be insufficient to ensure during its initiation a rupture of the envelope 2 of the non-pressurized projectile.
- the triggering means here comprise a percussive primer 31 which is disposed at the level of the front part
- a percussion device for example a striker displaced by the impact on the ground.
- the envelope of the projectile 1 is not pressurized during the storage and transport phases. Thus the projectile is completely safe and harmless. Even an accidental initiation of the second gas generator, if it bursts the tube 5, is not enough to cause the casing 2 of the projectile to rupture.
- the envelope 2 is pressurized, as the case may be by " borrowing gases from the launcher which penetrate into the envelope through the holes 13 after displacement of the piston 10, or else through the gases generated by a first gas generator 19, if any.
- Figure 3 shows a projectile 1 according to a third embodiment of the invention.
- This mode differs notably from the previous ones in that it integrates exclusively a first gas generating means 32 which ensures the generation of a combustible and / or explosive gas which fills the entire envelope 2 of the projectile.
- This first gas generating means comprises a tubular diffuser 33 which extends over substantially the entire length of the envelope 2 between a reservoir 34 and the ogivated part of the envelope 2.
- the diffuser 33 is supported by a front surface 33a on an internal surface of the envelope 2 and it is positioned in a centering flange 35 of the reservoir 34.
- the reservoir 34 is held axially relative to the envelope by an elastic ring 7. It has a generally cylindrical shape and it is adjusted in the bore 6 of the envelope.
- the diffuser 33 is drilled in the front part with radial holes 36 and it contains calcium carbide 37 in granules.
- a cylindrical wire mesh will possibly be placed in the diffuser in order to ensure the maintenance granules and prevent their exit through holes 36.
- the reservoir 34 is made of plastic. It contains water 38 as well as opening means 39.
- the opening means 39 comprise a piston 40 slidably mounted in the tank 34 against the action of a return spring 41.
- the piston 40 carries a needle 42 which allows the perforation of the reservoir 34.
- the reservoir 34 is closed by an annular nut 43 and a seal 44 is placed between the piston 40 and the nut 43.
- this projectile is as follows. At the time of firing, the gas pressure of the launcher is exerted on the piston 40 which is pushed towards the front of the projectile.
- the reservoir 34 is not completely filled with water (the water level 38 is shown in the figure), the movement of the piston is thus made possible until the reservoir 34 is punctured by the needle 42.
- the water 38 is thus brought into contact with the calcium carbide 37 and acetylene is generated which fills the casing 2 of the projectile through the holes 36 of the diffuser 33.
- the triggering means comprise a percussive primer 31 which is arranged at the front part 2a of the projectile and which is initiated on impact with the ground by a percussion device (not shown), by example a striker moved by the impact on the ground.
- the acetylene is detonated and the resulting overpressure causes the envelope 2 to burst.
- provision may be made for a mass of calcium carbide and of water such that the quantity of acetylene generated is sufficient for the sole impact of the projectile on the ground causes the envelope to burst.
- Means will therefore be provided for emptying the casing of the projectile.
- This material will be chosen and configured so that it shrinks below a given temperature and thus no longer exerts the same return force on the piston. Winter temperatures will cause the spring to return to a rest position in which it no longer applies the piston 40 against the nut 43.
- one end of the spring will be integral with the piston. The retraction of the spring will therefore cause the piston. The seal is then broken and the gas can gradually escape from the envelope 2 through the nut 43.
- FIG. 4 thus shows a detail of a variant in which the piston 40 comprises a porous annular part
- FIG. 5 shows another variant in which a cover 46 made of porous material is placed directly on the envelope 2. This variant could also be associated with the embodiments of FIGS. 1 and 2.
- FIG. 7 shows a variant of the third embodiment of the invention in which, in order to promote the rupture of the casing 2 of the projectile, at least one detonating cutting cord 49 is provided, fixed to the internal surface of the envelope 2 for example by gluing (the detonating cords are well known to those skilled in the art).
- the detonating cords are well known to those skilled in the art.
- Such a variant also makes it possible to ensure better initiation of the explosive gas filling the envelope 2.
- FIG. 7 also shows a percussive primer 31 which makes it possible to initiate the detonating cutting cords 49, as well as the mechanical striker 50 which is associated with it.
- This striker is retained relative to a housing 51 by a shearable collar which is broken upon impact.
- triggering means could also be used with one or the other of the preceding embodiments.
- FIG. 6 shows a front part of a projectile which carries triggering means comprising a primer 48 which is actuated by a retarder means 47 which is initiated during the firing.
- triggering means comprising a primer 48 which is actuated by a retarder means 47 which is initiated during the firing.
- a programmable clock timer for example electronic
- a pyrotechnic retarder comprising a delay composition which will be initiated at the time of the firing.
- Such delay means are not described in detail and are well known to those skilled in the art.
- Such a variant will make it possible to trigger the projectile regardless of the nature of the ground, in particular the hardness of the snow.
- the delay before initiation will be programmed before firing depending on the distance at which the projectile is launched. The initiation will be according to the needs provoked a little before impact with snow or else after sinking of the projectile in the snow layer.
- the orce 48 will ensure, depending on the case, the initiation of acetylene (embodiments of FIGS. 2 and 3) or that of the gas generator 18 (embodiment of FIG. 1).
- the pressure causing the rupture of the envelope 2 can be precisely calibrated, by providing for incipient fractures on the envelope, for example thinned zones.
- FIG. 8a thus shows primers for longitudinal breaks 52 which are regularly distributed angularly and which extend over substantially the entire length of the envelope.
- FIG. 8b shows primers for annular ruptures 53 which are regularly distributed axially on the envelope 2.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Bags (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/069,774 US6584773B2 (en) | 2000-07-05 | 2001-06-29 | Projectiles to trigger avalanches |
EP01949580A EP1297298A1 (fr) | 2000-07-05 | 2001-06-29 | Projectile pour le declenchement d'avalanches |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR00/08850 | 2000-07-05 | ||
FR0008850A FR2811420B1 (fr) | 2000-07-05 | 2000-07-05 | Projectile pour le declenchement d'avalanches |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002003014A1 true WO2002003014A1 (fr) | 2002-01-10 |
Family
ID=8852215
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2001/002082 WO2002003014A1 (fr) | 2000-07-05 | 2001-06-29 | Projectile pour le declenchement d'avalanches |
Country Status (4)
Country | Link |
---|---|
US (1) | US6584773B2 (fr) |
EP (1) | EP1297298A1 (fr) |
FR (1) | FR2811420B1 (fr) |
WO (1) | WO2002003014A1 (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2865272A1 (fr) * | 2004-01-20 | 2005-07-22 | Serge Ladriere | Dispositif pour projectile a energie embarquee |
US7261037B2 (en) * | 2004-08-27 | 2007-08-28 | Joseph Jr J Barthell | Pyrotechnic animal dispersal device |
US7537508B1 (en) * | 2005-03-29 | 2009-05-26 | Picone Products, Inc. | Carbide model rocketry system |
US7437996B2 (en) * | 2005-09-21 | 2008-10-21 | Lockheed Martin Corporation | Kinetic energy penetrator and method of using same |
FR2918583B1 (fr) * | 2007-07-13 | 2011-06-10 | Commissariat Energie Atomique | Dispositif generateur de gaz portable et alimentation electrique a pile a combustible comportant un tel dispositif |
WO2014083581A1 (fr) * | 2012-11-28 | 2014-06-05 | Ghosh Koulick | Dispositif explosif à base de gaz |
FR3101940B1 (fr) * | 2019-10-10 | 2021-10-15 | Tech Alpine De Securite Tas | Système de déclenchement d’avalanches |
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DE251079C (fr) * | 1910-06-29 | |||
FR994041A (fr) * | 1944-12-11 | 1951-11-09 | Controles Ind Soc Et | Perfectionnements apportés aux engins à explosif constitué par un mélange d'au moins deux corps mis en contact seulement au moment de l'usage |
US4109884A (en) * | 1976-02-12 | 1978-08-29 | Messerschmitt-Bolkow-Blohm Gmbh | Apparatus and method for storing pressure gas in a reservoir of a projectile |
FR2470949A2 (en) * | 1978-11-24 | 1981-06-12 | Lacroix E | Porous stopper for pyrotechnic device - using film of polyethylene used with aluminium film having very small central hole |
US4658588A (en) * | 1984-06-06 | 1987-04-21 | The Boeing Company | High pressure power source for a missile and the like |
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US3643329A (en) * | 1970-04-17 | 1972-02-22 | Us Navy | Explosively actuated cutter |
US3712171A (en) * | 1970-11-16 | 1973-01-23 | Us Navy | Spring actuated liquid propellant gun system |
US4034816A (en) * | 1976-05-04 | 1977-07-12 | Lutich Louis L | Demolition tool |
US4510748A (en) * | 1979-11-05 | 1985-04-16 | Adams Joseph S | Compression wave former |
US4365471A (en) * | 1979-11-05 | 1982-12-28 | Adams Joseph S | Compression wave former |
DE3503040A1 (de) | 1985-01-30 | 1986-07-31 | Messerschmitt-Bölkow-Blohm GmbH, 8012 Ottobrunn | Vorrichtung zum rueckstoss- und signaturfreien abschiessen von geschossen |
FR2636729B1 (fr) | 1988-09-19 | 1990-12-07 | Schippers Jacob | Procede et dispositif pour declencher une avalanche |
US5062367A (en) | 1988-12-05 | 1991-11-05 | Nippon Koki, Co., Ltd. | Air bag inflation gas generator |
US5104466A (en) | 1991-04-16 | 1992-04-14 | Morton International, Inc. | Nitrogen gas generator |
FR2691706B1 (fr) | 1992-06-02 | 1994-07-22 | Livbag Snc | Generateur pyrotechnique de gaz muni d'une ouverture de securite. |
AT407576B (de) | 1996-04-10 | 2001-04-25 | Innova Patent Gmbh | Vorrichtung zum auslösen einer lawine od.dgl. |
FR2771168B1 (fr) | 1997-11-17 | 1999-12-10 | Commissariat Energie Atomique | Procede de declenchement artificiel d'une avalanche et dispositif pour la mise en oeuvre de ce procede |
-
2000
- 2000-07-05 FR FR0008850A patent/FR2811420B1/fr not_active Expired - Fee Related
-
2001
- 2001-06-29 EP EP01949580A patent/EP1297298A1/fr not_active Withdrawn
- 2001-06-29 US US10/069,774 patent/US6584773B2/en not_active Expired - Fee Related
- 2001-06-29 WO PCT/FR2001/002082 patent/WO2002003014A1/fr not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE251079C (fr) * | 1910-06-29 | |||
FR994041A (fr) * | 1944-12-11 | 1951-11-09 | Controles Ind Soc Et | Perfectionnements apportés aux engins à explosif constitué par un mélange d'au moins deux corps mis en contact seulement au moment de l'usage |
US4109884A (en) * | 1976-02-12 | 1978-08-29 | Messerschmitt-Bolkow-Blohm Gmbh | Apparatus and method for storing pressure gas in a reservoir of a projectile |
FR2470949A2 (en) * | 1978-11-24 | 1981-06-12 | Lacroix E | Porous stopper for pyrotechnic device - using film of polyethylene used with aluminium film having very small central hole |
US4658588A (en) * | 1984-06-06 | 1987-04-21 | The Boeing Company | High pressure power source for a missile and the like |
Also Published As
Publication number | Publication date |
---|---|
FR2811420B1 (fr) | 2003-01-17 |
US6584773B2 (en) | 2003-07-01 |
EP1297298A1 (fr) | 2003-04-02 |
US20020121214A1 (en) | 2002-09-05 |
FR2811420A1 (fr) | 2002-01-11 |
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