EP1186211A1 - Torche a plasma comportant des electrodes separees par un entrefer et allumeur incorporant une telle torche - Google Patents
Torche a plasma comportant des electrodes separees par un entrefer et allumeur incorporant une telle torcheInfo
- Publication number
- EP1186211A1 EP1186211A1 EP01919603A EP01919603A EP1186211A1 EP 1186211 A1 EP1186211 A1 EP 1186211A1 EP 01919603 A EP01919603 A EP 01919603A EP 01919603 A EP01919603 A EP 01919603A EP 1186211 A1 EP1186211 A1 EP 1186211A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrodes
- plasma torch
- torch
- electrode
- plasma
- 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.)
- Withdrawn
Links
- 230000037452 priming Effects 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims description 19
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 230000005684 electric field Effects 0.000 claims description 4
- 238000005304 joining Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 15
- 239000003380 propellant Substances 0.000 description 7
- 239000004033 plastic Substances 0.000 description 6
- 229920003023 plastic Polymers 0.000 description 6
- -1 polyethylene Polymers 0.000 description 5
- 238000010891 electric arc Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000020 Nitrocellulose Substances 0.000 description 3
- 229930040373 Paraformaldehyde Natural products 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000977 initiatory effect Effects 0.000 description 3
- 229920001220 nitrocellulos Polymers 0.000 description 3
- 229920006324 polyoxymethylene Polymers 0.000 description 3
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 2
- 238000002679 ablation Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- AXZAYXJCENRGIM-UHFFFAOYSA-J dipotassium;tetrabromoplatinum(2-) Chemical compound [K+].[K+].[Br-].[Br-].[Br-].[Br-].[Pt+2] AXZAYXJCENRGIM-UHFFFAOYSA-J 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- 239000004323 potassium nitrate Substances 0.000 description 1
- 229910001487 potassium perchlorate Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C19/00—Details of fuzes
- F42C19/08—Primers; Detonators
- F42C19/0823—Primers or igniters for the initiation or the propellant charge in a cartridged ammunition
- F42C19/0826—Primers or igniters for the initiation or the propellant charge in a cartridged ammunition comprising an elongated perforated tube, i.e. flame tube, for the transmission of the initial energy to the propellant charge, e.g. used for artillery shells and kinetic energy penetrators
-
- 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
- F42B5/08—Cartridges, i.e. cases with charge and missile modified for electric ignition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C19/00—Details of fuzes
- F42C19/08—Primers; Detonators
- F42C19/0807—Primers; Detonators characterised by the particular configuration of the transmission channels from the priming energy source to the charge to be ignited, e.g. multiple channels, nozzles, diaphragms or filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C19/00—Details of fuzes
- F42C19/08—Primers; Detonators
- F42C19/0811—Primers; Detonators characterised by the generation of a plasma for initiating the charge to be ignited
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C19/00—Details of fuzes
- F42C19/08—Primers; Detonators
- F42C19/0823—Primers or igniters for the initiation or the propellant charge in a cartridged ammunition
- F42C19/083—Primers or igniters for the initiation or the propellant charge in a cartridged ammunition characterised by the shape and configuration of the base element embedded in the cartridge bottom, e.g. the housing for the squib or percussion cap
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/52—Generating plasma using exploding wires or spark gaps
Definitions
- the technical field of the invention is that of plasma torches and more particularly torches used to ignite a propellant charge of an ammunition.
- a plasma torch is a system that generates gases at high pressure (of the order of 500 MPa) and at high temperature (greater than 10,000 K) from a high voltage electrical discharge (from 20 kV) caused between two electrodes.
- Plasma torches are used in industry to cut, for example, conductive materials, or to destroy certain products or materials, or to make metallic deposits. They are also used in the armament field to generate pressure allowing the firing of a projectile.
- Known plasma torches comprise an anode and a cathode separated by a capillary tube made of a material which is both electrical insulator and capable of decomposing to generate a plasma (for example a plastic material).
- the electrical discharge between anode and cathode is started by means of a copper or other conductive material fuse.
- the electric arc thus created causes a plasma which ablates the wall of the capillary tube, which causes the generation of light gases at high pressure and high temperature.
- These gases are used either to directly accelerate a projectile, or to vaporize a working fluid (for example water) which makes it possible to increase the volume of gas.
- a working fluid for example water
- the torch according to the invention has improved resistance to mechanical stress which increases its reliability.
- it is simple in structure and can be manufactured at lower cost.
- the torch according to the invention can be produced without difficulty with very different lengths.
- the invention also relates to an igniter using such a plasma torch, an igniter making it possible to facilitate the diffusion of the plasma towards the propellant charge, and this for very different charging configurations from the point of view of mass or geometry.
- the subject of the invention is a plasma torch comprising at least two electrodes separated by a cylindrical insulating case delimiting an internal volume, torch characterized in that the electrodes are separated by a distance sufficiently reduced so that an arc of ignition between the electrodes when a supply voltage supplied by a generator is applied between them, the distance between the electrodes and the supply voltage of the generator being chosen such that the electric field appearing between the electrodes is of the order of 1 egavolt / meter.
- the torch may include a rear electrode and a front electrode, the rear electrode comprising an axial tip oriented towards the front electrode and the front electrode comprising a thinned crown oriented towards the rear electrode and an axial bore.
- the axial drilling of the front electrode may have a nozzle profile comprising a converging conical profile open from the side of the rear electrode and followed by a divergent conical profile open towards the outside of the torch.
- the torch may include a block of energetic material disposed between the electrodes.
- the block may be annular.
- the torch will generally include a metal body having an axial bore inside which the electrodes and the insulating case are arranged.
- the bore of the body may include a shoulder on which the front electrode is applied, the insulating cylindrical case being in axial support, on the one hand on the front electrode and on the other hand on the rear electrode, a ring of insulating closure being screwed at a rear thread of the body and ensuring the axial connection of the electrodes and the insulating case with the body.
- the closure ring may include a lip surrounding a thinned extension of the insulating case.
- the front electrode may include a cylindrical surface on which the insulating case will be adjusted.
- the torch may include a spacer ring coaxial with the insulating case and interposed between the front electrode and the energy unit, the latter being supported on a counterbore made on the insulating case.
- the invention also relates to an igniter for ammunition which is characterized in that it comprises at least one such plasma torch.
- the igniter may include a tubular diffuser pierced with at least one hole and integral with the torch at a front portion thereof so as to receive the plasma generated by the torch.
- the diffuser may include at least two regularly distributed holes angularly and / or axially and drilled in radial directions of the diffuser.
- FIG. 1 shows in longitudinal section a first embodiment of a torch according to the invention
- 2 shows in longitudinal section a second embodiment of a torch according to the invention
- FIG. 3 shows in longitudinal section an example of an igniter using a torch according to the invention.
- a plasma torch 1 according to a first embodiment of the invention comprises a metallic tubular body 2, closed at a front part 2a by a thin cover 3 made of plastic or made of metal and sticks to the body 2.
- the rear part 2b of the body 2 has an enlarged diameter so as to constitute a stop flange facilitating the fixing of the torch in a bore of a support (not shown) for example of an ammunition base.
- the body 2 carries a thread 4.
- the tubular body 2 will be covered over substantially its entire external surface by an insulator (not shown), for example by a vacuum deposition of 30 to 80 micrometers of a plastic material such as polyethylene or of another insulating material, like glass or ceramic. Such an arrangement improves the electrical insulation of the torch. We will avoid the deposition of plastic material only at the thread 4 so as not to interfere with the fixing of the body.
- the body 2 has an axial bore 5 inside which is a cylindrical insulating case 6 made of a plastic material capable of becoming ablated, that is to say of generating light gases by the action of a plasma .
- a cylindrical insulating case 6 made of a plastic material capable of becoming ablated, that is to say of generating light gases by the action of a plasma .
- the case 6 could also be made of an energetic material, for example nitrocellulose.
- Such a case is generally called a capillary in known plasma torches.
- a metal electrode 7 and 8 are separated by the insulating case 6.
- An annular front electrode 8 is applied against an internal counterbore 2c of the case 2. It has a peripheral shoulder 8a which is adjusted tightly with the body 2.
- the front electrode 8 has an axial bore 11 and it also has a thinned crown 12 which is oriented towards the point 7b of the rear electrode 7.
- the front 8 and rear 7 electrodes are separated axially by a distance D (or air gap) which is chosen such that (for the chosen electric voltage) the electric field between the electrodes is of the order of 1 megavolt / m.
- D or air gap
- the distance D will be 10 mm.
- the axial bore 11 of the front electrode 8 also has a nozzle profile comprising a converging conical profile 13 which is open from the side of the rear electrode 7 and which is followed by a diverging conical profile 14 which is open towards the outside torch 1.
- angles of the converging and diverging as well as the length of the nozzle will be easily determined by the skilled person according to the desired performance for the torch (speed and pressure desired for the plasma leaving the nozzle). These angles are of the order of 15 ° for the convergent 13 and 20 ° for the diverging 14 (half angles at the top of the cones).
- the total length of the nozzle will be of the order of 15 mm.
- the nozzle makes it possible to reduce the heat losses at the level of the plasma generated by the torch. In fact, the nozzle makes it possible to bring the gases located at the periphery back into the axis of the torch. These gases are thus heated by the plasma.
- the rear electrode 7 also has a peripheral shoulder 7c which acts as a positioning stop for the rear electrode 7 relative to the body 2.
- the ring 9 is made of an insulating material with high mechanical strength, for example polyoxymethylene.
- the ring 9 comprises a tubular front part 9c which is adjusted in the bore 5 of the body 2. This front part forms a sealing lip ensuring, by its radial deformation, during the operation of the torch, the gas gas tightness by torch 1.
- the insulating cylindrical case 6 is axially supported on
- the case has a thinned extension 6a which is interposed between a cylindrical surface of the electrode 7 and the tubular front part 9c of the ring 9.
- This front part comprises annular sealing lips 30 separated by annular grooves 31.
- the lips 30 ensure by their radial deformation, during the operation of the torch, the gas tightness produced by the torch 1.
- the grooves 31 form expansion chambers also improving sealing.
- a first connection 20 is in electrical contact by an appropriate means (for example a spring touch not shown) with the rear electrode 7.
- a second connection 21 is in electrical contact with the metal body 2 of the torch, for example by a spring touch resting on the rear part 2b thereof.
- the body 2 is in electrical contact with the front electrode 8 by virtue of the tight adjustment of the shoulder 8a of the electrode in the bore 5 of the body 2.
- the generator 19 is designed to be able to deliver an energy of the order of 1 million Joules under a voltage of approximately 20 kilo Volts. Such an arrangement ensures the presence between the electrodes of an electric field of 1 MegaVolt / meter which makes it possible to ignite the plasma without a fuse.
- a generator is conventional and includes, for example, capacitors, an inductor, thy ⁇ stors and a stabilized power supply. This voltage is applied to the electrodes 7 and 8. Due to the pointed shapes of the ends of the electrodes and the reduced air gap separating the latter, an electric arc occurs between the electrodes 7 and 8. The arc is confined in the chamber 22 which is delimited by the insulating case 6 and the electrodes 7 and 8.
- the high pressure (of the order of 100 Mega Pascals) which then prevails in this chamber will cause the ablation of the material of the case 6 and the creation of a plasma which will flow out of the body 2 through the nozzle 11.
- the thin cover 3 will be broken from the initiation of the torch.
- This plasma makes it possible, for example, to initiate a propellant charge of ammunition. It then provides the advantages usually associated with electric plasma ignition: pressure level higher than that of a conventional pyrotechnic ignition due to the supply of electrical energy by the generator. This results in a higher speed for the projectile.
- the plasma can also be used for a civil application, such as cutting or destruction of materials, creation of security openings.
- the nozzle 11 makes it possible to promote the axial flow of the plasma gases out of the torch 1 and to accelerate these gases. This limits the pressure level in the chamber 22 to an admissible value for the mechanical strength of the torch while accelerating the diffusion of the plasma, which increases for example the efficiency of the ignition of a propellant charge of ammunition. It is thus possible to obtain with the torch according to the invention a plasma speed of the order of 10,000 m / s.
- the electrical energy that can be consumed is of the order of 1 Mega Joules for an air gap D between the electrodes of approximately 20 mm, and a voltage of 20 kilo volts.
- the torch according to the invention therefore has an excellent size / efficiency ratio, while being simple in design and easy to manufacture.
- FIG. 2 shows a second embodiment of a plasma torch according to the invention. This mode differs from the previous one in that a block 23 of energetic material is placed between the electrodes 7 and 8.
- the block is produced by hot or cold compression of an energetic material such as nitrocellulose or else a pyrotechnic composition.
- an energetic material such as nitrocellulose or else a pyrotechnic composition.
- the following conventional compositions may be used as pyrotechnic composition: Boron / potassium nitrate (B / KN03), Aluminum / Potassium perchlorate (A1 / KC104), Aluminum / copper oxide (Al / CuO).
- the block 23 is supported on a counterbore 24 produced on the insulating case 6.
- a spacer ring 25 is arranged coaxially with the insulating case 6 and it is interposed between the front electrode 8 and the block 23.
- the block 23 is positioned rigidly between the two electrodes. Its annular shape does not interfere with the formation of the discharge arc between the electrodes.
- the block 23 has a bore delimited by profiles symmetrical conics forming a convergent followed by a divergent. Such an arrangement facilitates the ablation and / or combustion of the material of the block 23.
- the pressure and the temperature established in the chamber 22 ensure the initiation of the block 23. This combustion makes it possible to increase the pressure level of the plasma.
- the spacer ring 25 will preferably be made of the same material as the case 6. Thus it will ablate like the case and will participate in the formation of the plasma.
- the spacer ring 25 shown in Figure 2 has one end 25a in a conical bevel which enters a housing of complementary shape formed on the electrode 8. Such an arrangement improves the gas tightness and prevents gas passage between the spacer 25 and the electrode 8.
- the plasma torch shown in Figures 1 and 2 can be directly placed on an ammunition base. Such an embodiment is more particularly suited to the initiation of small or medium caliber ammunition
- FIG. 3 shows an igniter 26 according to an embodiment of the invention.
- This igniter incorporates a torch 1 according to one or the other embodiment described above, a torch which is not shown here in detail.
- This igniter comprises a tubular diffuser 27 which is fixed by gluing or screwing on a cylindrical extension 28 of the torch 1.
- the diffuser is made of a plastic material ablatable by plasma (such as polyoxymethylene) or else a combustible material, for example nitrocellulose. It is pierced with holes 29 regularly distributed angularly and axially and drilled in radial directions of the diffuser.
- the holes 29 have a conical profile which is flared towards the outside of the body 2 to facilitate the evacuation of the gases from the plasma.
- the diffuser receives the plasma generated by the torch 1 and it diffuses it in radial directions.
- Such an embodiment is more particularly suitable for igniting ammunition of caliber greater than 50mm.
- the length of the diffuser 27 may vary between 20 and 300 mm without significant loss of performance.
- an energetic material making it possible to increase the pressure or the energy of the plasma.
- a pyrotechnic composition a propellant powder or a propellant.
- An axial channel could be provided in this energetic material.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Plasma Technology (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0004735 | 2000-04-11 | ||
FR0004735A FR2807611B1 (fr) | 2000-04-11 | 2000-04-11 | Torche plasma comportant des electrodes separees par un entrefer et allumeur incorporant une telle torche |
PCT/FR2001/000962 WO2001078470A1 (fr) | 2000-04-11 | 2001-03-30 | Torche a plasma comportant des electrodes separees par un entrefer et allumeur incorporant une telle torche |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1186211A1 true EP1186211A1 (fr) | 2002-03-13 |
Family
ID=8849206
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01919603A Withdrawn EP1186211A1 (fr) | 2000-04-11 | 2001-03-30 | Torche a plasma comportant des electrodes separees par un entrefer et allumeur incorporant une telle torche |
Country Status (6)
Country | Link |
---|---|
US (1) | US6740841B2 (fr) |
EP (1) | EP1186211A1 (fr) |
FR (1) | FR2807611B1 (fr) |
IL (1) | IL146546A0 (fr) |
WO (1) | WO2001078470A1 (fr) |
ZA (1) | ZA200109302B (fr) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2844873B1 (fr) * | 2002-09-25 | 2006-11-24 | Giat Ind Sa | Inflammateur a double effet et procede d'allumage mettant en oeuvre un tel inflammateur |
FR2847975B1 (fr) | 2002-12-02 | 2006-06-16 | Giat Ind Sa | Dispositif assurant la liaison electrique entre une masse reculante d'une arme et un berceau fixe |
FR2849179B1 (fr) | 2002-12-18 | 2006-06-30 | Giat Ind Sa | Munition sans douille et procede de montage d'une telle munition |
US7073447B2 (en) * | 2003-02-12 | 2006-07-11 | Bae Systems Land & Armaments L.P. | Electro-thermal chemical igniter and connector |
FR2869101B1 (fr) | 2004-04-15 | 2006-06-02 | Giat Ind Sa | Munition sans douille et procede de montage d'une telle munition |
US8742282B2 (en) * | 2007-04-16 | 2014-06-03 | General Electric Company | Ablative plasma gun |
US8053699B2 (en) * | 2007-11-27 | 2011-11-08 | General Electric Company | Electrical pulse circuit |
US20090134129A1 (en) * | 2007-11-27 | 2009-05-28 | General Electric Company | Ablative plasma gun apparatus and system |
US7779795B2 (en) * | 2008-01-09 | 2010-08-24 | Warren James C | Valve system for opposed piston engines |
US8607702B1 (en) * | 2010-01-15 | 2013-12-17 | The United States Of America As Represented By The Secretary Of The Army | Low energy ignition system for large and medium caliber ammunition |
US20110248002A1 (en) * | 2010-04-13 | 2011-10-13 | General Electric Company | Plasma generation apparatus |
SE535992C2 (sv) * | 2010-12-15 | 2013-03-19 | Bae Systems Bofors Ab | Repeterbar plasmagenerator och metod därför |
SE536256C2 (sv) | 2011-12-29 | 2013-07-23 | Bae Systems Bofors Ab | Repeterbar plasmagenerator och metod därför |
CN106796031B (zh) | 2014-08-18 | 2022-07-08 | 伍德沃德有限公司 | 火炬式点火器 |
US11421601B2 (en) | 2019-03-28 | 2022-08-23 | Woodward, Inc. | Second stage combustion for igniter |
CN110595304B (zh) * | 2019-08-20 | 2021-12-10 | 南京理工大学 | 一种点点火药装置 |
WO2022073094A1 (fr) * | 2020-10-06 | 2022-04-14 | Mirek Patrick Michael | Torche à plasma à couplage inductif radiofréquence (rf-icp) |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1184427A (en) * | 1966-03-16 | 1970-03-18 | Union Carbide Corp | Improvements in or relating to Arc Glass Heaters |
US4035684A (en) * | 1976-02-23 | 1977-07-12 | Ustav Pro Vyzkum, Vyrobu A Vyuziti Radiosotopu | Stabilized plasmatron |
US5012719A (en) * | 1987-06-12 | 1991-05-07 | Gt-Devices | Method of and apparatus for generating hydrogen and projectile accelerating apparatus and method incorporating same |
US5164568A (en) * | 1989-10-20 | 1992-11-17 | Hypertherm, Inc. | Nozzle for a plasma arc torch having an angled inner surface to facilitate and control arc ignition |
US5945623A (en) * | 1994-10-26 | 1999-08-31 | General Dynamics Armament Systems, Inc. | Hybrid electrothermal gun with soft material for inhibiting unwanted plasma flow and gaps for establishing transverse plasma discharge |
US5675115A (en) * | 1996-04-03 | 1997-10-07 | The United States Of America As Represented By The Secretary Of The Army | Ignition tube for electrothermal chemical combustion |
DE19629517A1 (de) * | 1996-07-22 | 1998-01-29 | Diehl Gmbh & Co | Elektrothermische Rohrwaffe |
DE19629508A1 (de) * | 1996-07-22 | 1998-01-29 | Diehl Gmbh & Co | Elektrothermische Rohrwaffe mit Plasmabrenner |
DE19629506A1 (de) * | 1996-07-22 | 1998-01-29 | Diehl Gmbh & Co | Plasmabrenner für elektrothermische Rohrwaffen |
CN1235569A (zh) * | 1996-11-01 | 1999-11-17 | 乔治·H·米利 | 利用惯性静电约束放电等离子体的等离子体喷射源 |
JP2001057359A (ja) * | 1999-08-17 | 2001-02-27 | Tokyo Electron Ltd | プラズマ処理装置 |
-
2000
- 2000-04-11 FR FR0004735A patent/FR2807611B1/fr not_active Expired - Fee Related
-
2001
- 2001-03-30 EP EP01919603A patent/EP1186211A1/fr not_active Withdrawn
- 2001-03-30 WO PCT/FR2001/000962 patent/WO2001078470A1/fr not_active Application Discontinuation
- 2001-03-30 IL IL14654601A patent/IL146546A0/xx unknown
- 2001-10-11 US US09/958,573 patent/US6740841B2/en not_active Expired - Fee Related
- 2001-11-12 ZA ZA200109302A patent/ZA200109302B/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO0178470A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2807611A1 (fr) | 2001-10-12 |
US6740841B2 (en) | 2004-05-25 |
US20020134767A1 (en) | 2002-09-26 |
WO2001078470A1 (fr) | 2001-10-18 |
FR2807611B1 (fr) | 2002-11-29 |
IL146546A0 (en) | 2002-07-25 |
ZA200109302B (en) | 2002-06-20 |
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