EP0905470B1 - Composant d'allumage pour composition pyrotechnique ou charge propulsive - Google Patents
Composant d'allumage pour composition pyrotechnique ou charge propulsive Download PDFInfo
- Publication number
- EP0905470B1 EP0905470B1 EP98117138A EP98117138A EP0905470B1 EP 0905470 B1 EP0905470 B1 EP 0905470B1 EP 98117138 A EP98117138 A EP 98117138A EP 98117138 A EP98117138 A EP 98117138A EP 0905470 B1 EP0905470 B1 EP 0905470B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ignition
- component
- components
- propellant charge
- 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.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
- F41B6/00—Electromagnetic launchers ; Plasma-actuated launchers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A19/00—Firing or trigger mechanisms; Cocking mechanisms
- F41A19/58—Electric firing mechanisms
Definitions
- the technical field of the invention is that of components allowing the ignition of a composition pyrotechnic or a propellant charge of ammunition.
- Known igniters include a composition pyrotechnic likely to generate a flame whose temperature is sufficient to ignite a propellant charge or a useful pyrotechnic composition (composition smoke, lighting or gas generator for example).
- the ignition composition is itself initiated by a electrical means which could be a heating wire, a wire exploded or a semiconductor bridge.
- composition ignition pyrotechnic which has some sensitivity, especially to heating or discharges electrostatic.
- Handling and manufacturing of these components therefore presents certain risks and ammunition or devices who use these components also have risks of untimely initiation.
- the known components only work one only once and they release all their energy following the passage of a current in the medium electric initiation.
- Such a mode of operation is brutal and can generate ignition heterogeneities in the composition which are likely to disturb the combustion regime subsequent and cause pressure waves.
- Plasma torches are used alone (see par example patent US2899864) or associated with a charge conventional solid or liquid propellant (see par example patent US5231242) in a cannon commonly called "Electro-Thermal-Chemical Canon".
- the known plasma torches are of dimensions important (of the order of 200 to 300 mm long) and they consume significant energy (of the order of Megajoule), which is released in a way that is difficult to control.
- the pressure that sets the projectile in motion results in both combustion of the propellant charge and the pressure of the plasma generated by the torch, plasma which also modifies the propellant charge combustion regime.
- the pressure delivered by the torch is important in order to allow an increase in the projectile speed by maintaining the level longer of the pressure applied to it.
- US-A-5,052,272 shows a device according to the preamble of claim 1.
- the ignition component according to the invention allows ensure reliable and reproducible ignition of pyrotechnic compositions or propellant charges.
- the component proposed by the invention also makes it possible to provide additional energy to obtain speeds for the projectile.
- the subject of the invention is an ignition component a pyrotechnic composition or a propellant charge, component characterized in that it comprises at least two electrodes separated by a cylindrical insulating jacket delimiting an internal volume, electrodes connected by a conductive fuse located in the internal volume, the component thus constituting a plasma torch whose dimensions are such that it generates a plasma when receives a starting voltage less than or equal to 600 volts and we provide it with lower electrical energy or equal to 5000 joules.
- the ignition component according to the invention therefore constitutes a plasma torch, but a very large torch reduced. Indeed, concretely such conditions supply lead to design a torch in which the distance between the non-isolated parts of the electrodes through free space (distance over which occurs the electric arc) is less than or equal to 10 mm (and preferably of the order of 5 mm).
- the merit of the invention was to consider that it was still possible to obtain a plasma with a structure of also reduced in size, and that the plasma obtained was sufficient to allow the ignition of a pyrotechnic composition or of a propellant charge.
- a component ignition to produce a flame can be defined by not comprising any flame-generating composition.
- the known plasma torches could not more lead to the definition of an ignition component. Indeed these torches are usually designed to deliver very high energy levels needed to set projectile speed. Such a field of employment leads to the definition of relatively large torches in which the distance between electrodes is sufficient great for the power of the electric discharge arc between electrodes is strong.
- the ignition fuse could be constituted by a conductive fibrous structure substantially filling the entire internal volume delimited by the electrodes and the insulating jacket.
- the fibrous structure will advantageously be formed by carbon filaments, or one or more wires of copper or magnesium.
- the component includes a seal closing an outlet bore gases generated and ensuring containment of the internal volume.
- the invention also relates to a device igniting a propellant charge using such a component ignition.
- such an ignition device may have at least three ignition components according to the invention secured to a support tube.
- At least two ignition components may have their axes oriented in different directions.
- the ignition device according to the invention may include at least three components regularly distributed on the external surface of the support tube and whose axes are substantially perpendicular to the axis of the support tube.
- the ignition device may be such that the support tube also carries at least one pyrotechnic igniter.
- the invention finally relates to a propellant charge of ammunition comprising a combustible shell containing a load propellant, charge characterized in that it comprises a ignition device according to the invention.
- the energy level of the plasma generated by the component increases the pressure developed in the chamber of a small or medium caliber weapon and keep this pressure longer at the back of the projectile.
- Electro-Thermal-Chemical weapons and ammunition from small caliber (less than 14mm) or medium caliber (less than 50mm), which was impossible with the torches with known plasma whose field of use is limited to large caliber.
- the ignition component proposed by the invention although small in size, is capable of delivering (with a suitable electronic control device) multiple jets consecutive plasma separated by a few milliseconds.
- ignition components for weapons of caliber greater than 25mm it is possible to use several ignition components according to the invention to constitute an ignition device which will allow, by the combination of the plasma generated by each component, to provide a global energy plasma sufficient and analogous to that provided by torches known.
- the ignition device according to the invention allows also to control the pressure rise curve in the gun chamber, so the shooting performance.
- an ignition component 1 comprises at least two electrodes 2a, 2b separated by a cylindrical insulating jacket 3.
- the electrodes 2a and 2b are made of metal (by example in brass) and we can make the insulating jacket 3 made of plastic, for example polyethylene.
- the electrodes and the envelope define a volume internal 4.
- the electrodes are connected by a fuse conductor 5 which is arranged in the volume internal 4.
- the ignition fuse could for example be constituted by a copper wire, it will advantageously be fixed to the envelope for example by gluing.
- the ends 5a and 5b of the fuse 5 are pinched between the envelope and each of the electrodes 2a, 2b.
- the electrode 2a is full and it carries an axial pin 6 pointed which is intended to constitute a foot for the arc of shock.
- the electrode 2b has an axial bore 7 which is intended to let pass the plasma generated by the component.
- the bore is closed by a polymer cover 8 (by example in capton) which ensures both the watertightness of the component and initial plasma confinement.
- the cover 8 is bonded to the electrode 2b, its diameter is slightly lower than this one to leave a non-insulated part of the electrode 2b opposite the electrode 2a.
- the electrodes are connected by wires 9a, 9b to a voltage generator 10.
- the total external length of this ignition component is about 20mm, its outer diameter is about 10mm.
- the internal volume 4 is therefore about 1 cm3.
- the dimensions of this component are substantially those of known pyrotechnic ignition components (igniters).
- This ignition component is intended to be placed at the near or in contact with a pyrotechnic composition or of a propellant charge to ignite.
- the generator 10 supplies the component with a voltage priming of the order of 500 to 600 volts.
- the fuse 5 has a resistance which is chosen such that the voltage supplied by the generator heats it violently causing its vaporization.
- a copper or carbon wire of diameter less than 0.1 mm is perfectly suitable.
- fuse 5 creates inside the cavity 4 a conductive medium of low resistance (less than 500 milliohms), this has the effect of initiating between the electrodes 2a and 2b an electric arc. Priming of the arc is favored by the presence of the axial stud 6.
- the electric arc causes an increase in pressure and the temperature inside the cavity 4. This has the effect of causing a layer-by-layer vaporization of the material of the insulating jacket 3 (ablating).
- the seal 8 breaks by releasing out of the component and through the axial bore 7 the gases under high temperature and pressure (plasma).
- the temperature obtained with such a component is 3000 at 50,000 ° K. Such a temperature is enough to initiate practically any type of pyrotechnic composition or charge propellant.
- An advantage of the ignition component according to the invention is that the inflammation plasma is obtained from a current generator with a starting voltage of a few hundred volts.
- Another advantage of the component according to the invention is that it is completely inert, therefore it can be manufactured and handled without any danger. Furthermore, it cannot be accidentally initiated, the plasma only forming following the vaporization of the wire and in the presence of a potential difference between the electrodes which must be maintain for a sufficient time interval at the arc formation (a few microseconds). These two conditions cannot accidentally appear so simultaneous for example following a discharge electrostatic.
- the ignition component according to the invention can be made with an extremely reduced size. We can him give substantially the overall volume of a grain of powder propellant, about 6mm long and 4mm in diameter. The operating voltages will then be a little more weak.
- Figure 1a shows an alternative embodiment in which the axial stud 6 is replaced by a crown arc initiation 11.
- This variant makes it possible to locate the formation of electric arcs in the vicinity of the envelope insulating 3, which promotes the ablation thereof and rapid increase in pressure.
- Figure 2 shows an ignition component according to a second embodiment of the invention.
- This mode differs from the previous one in that the fuse priming 5 is replaced by a fibrous structure conductive 12 which fills substantially the entire volume internal 4 delimited by the electrodes 2a, 2b and the envelope insulating 3.
- a ball of yarn may be used as the fibrous structure 12 produced by the entanglement of carbon filaments of a few micrometers in diameter. This embodiment facilitates the fabrication and mounting of the fuse priming. Alternatively it is also possible to use copper or magnesium filaments of about one tenth of a mm in diameter.
- FIG 3 shows an ignition component according to a third embodiment. This mode differs from that according to Figure 1 in that the insulating jacket 3 is surrounded by a mechanical reinforcement case 13. This case will be produced in a insulating material for example in a filament wound to based on glass fibers or Kevlar.
- Figure 3a shows such an alternative embodiment.
- the reinforcement case 13 being conductive, it is then possible to fix the electrical connection wires at the same face of the component, on either side of the insulating envelope 3.
- FIG. 4 shows ammunition 14 comprising a projectile 15 and a case 16 for a propellant charge 17.
- the case carries at the rear part a base metal 18.
- the base has an axial housing in which is arranged an ignition component 1 according to the invention.
- the ignition component is attached to the base at the by means of a connecting ring 20 integral with the reinforcement mechanical 13.
- the ignition component ensures the ignition of the propellant charge by applying a voltage between the electrodes 2a and 2b.
- the ignition component then supplies several jets of consecutive plasma separated by time intervals of which it is possible to program the width (from a few microseconds a few milliseconds).
- the pressure supplied by the plasma also comes add to that provided by the propellant powder and it also modifies the combustion regime of the latter, which increases the speed of the projectile.
- the ignition component according to the invention of defining electro thermal weapon systems almost without modifying the weapon (since the plasma generator is integral with the ammunition case) and for all sizes, in particular sizes below 50mm.
- FIGS 5a and 5b show an ignition device more particularly suitable for lighting loads large caliber propellants (greater than 50mm). These measures ignition comprises a support tube 21, metallic or plastic and which extends along the axis 26 of the ammunition in the manner of an artillery igniter tube traditional. This tube is made integral with the base 18 of the ammunition by means of a fixing ring 20 and it carries several ignition components 1 according to the invention regularly distributed around its periphery.
- the different ignition components are shown here schematically.
- the axis 27 of each component is substantially perpendicular to the axis 26 of the support tube 21 to except for a 1ex component placed at the end of the tube and whose axis coincides with that of the tube.
- the ignition components are oriented so that the plasma they generate diffuses into the charge propellant 17 surrounding the tube 21. They are therefore fixed to the tube 21 by their non-pierced electrode 2a.
- the tube 21 receives the various supply wires components. We can only plan one wire per component (connected to electrode 2a) and ensure current return of all components 1 through the tube support 21.
- the supply wires are united in a strand 22 which is connected to the electric generator 10.
- This one includes a high voltage source 24 as well as a switchable contactor 23 which connects the source of high voltage to one or more of the ignition components.
- the switchable contactor will for example include different high voltage static relays.
- Contactor 23 is controlled by a programmer 25 (such as a microphone processor) in which the ignition sequence of the different components is introduced before firing.
- This ignition device allows you to control specifies the pressure rise curve in the pressure chamber the weapon therefore the performances of shooting.
- Figure 6 shows another embodiment which differs from the previous one in that the support tube carries to the times ignition components 1 according to the invention and conventional pyrotechnic igniters 28.
- the electric generator 10 here again includes a high voltage source 24 and a switchable contactor 23 which connects the high voltage source to one or more ignition components 1.
- Contactors 23 and 29 are controlled by the programmer 25 in which the ignition sequence of the different components is introduced before firing.
- This variant allows you to play in a different way on the evolution of the pressure in the chamber of the weapon.
- the ignition components 1 can be used to heat and vaporize part of the propellant charge 17, the pyrotechnic components are then initiated, their action being amplified by the fact that the loading propellant started to react. It is thus possible to deliver with this ignition system as much energy as with the previous mode but using plasma components less powerful.
- the ignition component according to the invention can finally be used for applications other than ignition, for example example for making cuts or welds.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Plasma & Fusion (AREA)
- Air Bags (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Description
- la figure 1 est une vue en coupe longitudinale d'un composant d'allumage selon un premier mode de réalisation de l'invention,
- la figure 1a est une vue partielle d'une variante de réalisation,
- la figure 2 est une vue en coupe longitudinale d'un composant d'allumage selon un deuxième mode de réalisation de l'invention,
- la figure 3 est une vue en coupe longitudinale d'un composant d'allumage selon un troisième mode de réalisation de l'invention,
- la figure 3a est une vue d'une variante de réalisation,
- la figure 4 est une vue en coupe longitudinale d'une charge propulsive équipée d'un dispositif d'allumage selon un premier mode de réalisation de l'invention,
- la figure 5a est une vue en coupe longitudinale d'une charge propulsive équipée d'un dispositif d'allumage selon un deuxième mode de réalisation de l'invention,
- la figure 5b est une coupe transversale du dispositif d'allumage de la figure 5a,
- la figure 6 est une vue en coupe longitudinale d'une charge propulsive équipée d'un dispositif d'allumage selon un troisième mode de réalisation de l'invention.
Claims (10)
- Composant d'allumage (1) d'une composition pyrotechnique ou d'une charge propulsive, comprenant au moins deux électrodes (2a,2b) séparées par une enveloppe cylindrique isolante (3) délimitant un volume interne (4), électrodes reliées par un fusible d'amorçage conducteur (5) disposé dans le volume interne, caractérisé en ce que le composant constitue ainsi une torche à plasma dont les dimensions sont telles qu'elle génère un plasma lorsqu'elle reçoit une tension d'amorçage inférieure ou égale à 600 volts et qu'on lui fournit une énergie électrique inférieure ou égale à 5000 joules.
- Composant d'allumage selon la revendication 1, caractérisé en ce que le fusible d'amorçage (5) est constitué par une structure fibreuse conductrice (12) remplissant sensiblement tout le volume interne (4) délimité par les électrodes et l'enveloppe isolante.
- Composant d'allumage selon la revendication 2, caractérisé en ce que la structure fibreuse (12) est formée par des filaments de carbone, ou un ou plusieurs fils de cuivre ou de magnésium.
- Composant d'allumage selon une des revendications 1 à 3, caractérisé en ce qu'il comporte un opercule (8) obturant un alésage de sortie (7) des gaz générés et assurant un confinement du volume interne (4).
- Dispositif d'allumage de la charge propulsive d'une munition, caractérisé en ce qu'il comprend au moins un composant d'allumage (1) selon une des revendications précédentes.
- Dispositif d'allumage selon la revendication 5, caractérisé en ce qu'il comporte au moins trois composants d'allumage (1) solidaires d'un tube support (21).
- Dispositif d'allumage selon la revendication 6, caractérisé en ce qu'au moins deux composants d'allumage (1) ont leurs axes orientés suivant des directions différentes.
- Dispositif d'allumage selon la revendication 7, caractérisé en ce qu'il comporte au moins trois composants d'allumage (1) régulièrement répartis à la surface externe du tube support (21) et dont les axes (27) sont sensiblement perpendiculaires à l'axe (26) du tube support (21).
- Dispositif d'allumage selon une des revendications 6 à 8, caractérisé en ce que le tube support (21) porte au moins un allumeur pyrotechnique (28).
- Charge propulsive de munition comportant une enveloppe combustible contenant un chargement propulsif (17), charge caractérisée en ce qu'elle comporte un dispositif d'allumage selon une des revendications 5 à 9.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9711836 | 1997-09-24 | ||
FR9711836A FR2768810B1 (fr) | 1997-09-24 | 1997-09-24 | Composant d'allumage pour composition pyrotechnique ou charge propulsive |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0905470A1 EP0905470A1 (fr) | 1999-03-31 |
EP0905470B1 true EP0905470B1 (fr) | 2001-11-21 |
Family
ID=9511387
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98117138A Expired - Lifetime EP0905470B1 (fr) | 1997-09-24 | 1998-09-10 | Composant d'allumage pour composition pyrotechnique ou charge propulsive |
Country Status (4)
Country | Link |
---|---|
US (1) | US6237494B1 (fr) |
EP (1) | EP0905470B1 (fr) |
DE (1) | DE69803262T2 (fr) |
FR (1) | FR2768810B1 (fr) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6752084B1 (en) * | 1999-01-15 | 2004-06-22 | Amtech, Inc. | Ammunition articles with plastic components and method of making ammunition articles with plastic components |
FR2807610B1 (fr) | 2000-04-11 | 2002-10-11 | Giat Ind Sa | Torche a plasma incorporant un fusible d'amorcage reactif et tube allumeur integrant une telle torche |
US6497180B1 (en) * | 2001-01-23 | 2002-12-24 | Philip N. Martin | Electric actuated explosion detonator |
US7059249B2 (en) * | 2001-01-23 | 2006-06-13 | United Defense Lp | Transverse plasma injector ignitor |
FR2824898B1 (fr) | 2001-05-18 | 2003-09-12 | Giat Ind Sa | Culot pour munition destine a recevoir un allumeur electrique |
FR2827039B1 (fr) | 2001-07-06 | 2003-11-28 | Giat Ind Sa | Dispositif d'allumage pour un chargement propulsif |
SE524623C2 (sv) * | 2002-08-08 | 2004-09-07 | Bofors Defence Ab | Isolerad patronhylsa och ammunition, förfarande för tillverkning av dylika hylsor och ammunition samt användning av dylika hylsor och ammunition vid flera skilda vapensystem |
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 |
US7073447B2 (en) * | 2003-02-12 | 2006-07-11 | Bae Systems Land & Armaments L.P. | Electro-thermal chemical igniter and connector |
US7059234B2 (en) * | 2003-05-29 | 2006-06-13 | Natec, Inc. | Ammunition articles and method of making ammunition articles |
US6805055B1 (en) * | 2003-06-25 | 2004-10-19 | Gamma Recherches & Technologies Patent Sa | Plasma firing mechanism and method for firing ammunition |
US9470485B1 (en) | 2004-03-29 | 2016-10-18 | Victor B. Kley | Molded plastic cartridge with extended flash tube, sub-sonic cartridges, and user identification for firearms and site sensing fire control |
FR2878320B1 (fr) | 2004-11-22 | 2009-05-08 | Giat Ind Sa | Munition ou composant de munition comprenant un materiau energetique structural |
US7958823B2 (en) * | 2004-12-17 | 2011-06-14 | Sawka Wayne N | Controllable digital solid state cluster thrusters for rocket propulsion and gas generation |
US7878120B1 (en) * | 2007-12-20 | 2011-02-01 | The United States Of America As Represented By The Secretary Of The Army | Ammunition data link |
SE533046C2 (sv) * | 2008-04-01 | 2010-06-15 | Bae Systems Bofors Ab | Sätt för elektrisk övertändning och förbränning av drivladdning, samt divladdning och ammunitionsskott i enlighet därmed |
US20110226148A1 (en) * | 2008-05-16 | 2011-09-22 | Sawka Wayne N | Physical destruction of electrical device and methods for triggering same |
DE102009043491A1 (de) * | 2009-09-30 | 2011-04-07 | Rheinmetall Waffe Munition Gmbh | Aktivierungseinheit für munitionsfreie Scheinziele |
US9921017B1 (en) | 2013-03-15 | 2018-03-20 | Victor B. Kley | User identification for weapons and site sensing fire control |
SE544051C2 (sv) * | 2019-12-20 | 2021-11-23 | Bae Systems Bofors Ab | Plasmagenerator samt ammunitionsenhet och utskjutningsanordning innehållandes nämnda plasmagenerator |
US11561073B1 (en) * | 2020-05-19 | 2023-01-24 | James Matthew Underwood | Light weight ammunition and firearm systems |
CN113804061A (zh) * | 2021-10-18 | 2021-12-17 | 北京北方车辆集团有限公司 | 一种电热化学焰火弹 |
Family Cites Families (23)
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US2899864A (en) | 1959-08-18 | bloxsom | ||
GB189606053A (en) * | 1896-03-18 | 1896-04-18 | Morris Tube Ammunition And Saf | An Improvement in Electric Primers for Firing Guns. |
CH348084A (fr) * | 1959-01-27 | 1960-07-31 | Vogel & Cie P | Amorce électrique pour la mise à feu d'une charge d'explosif |
DE2364272A1 (de) * | 1973-12-22 | 1975-06-26 | Dynamit Nobel Ag | Anzuendhuetchen fuer mechanische und elektrische zuendung |
FR2323213A1 (fr) * | 1974-01-10 | 1977-04-01 | Thomson Csf | Dispositif a trois etats de conduction |
AU557509B2 (en) * | 1982-07-19 | 1986-12-24 | Westinghouse Electric Corporation | Catridge for electromagnetic launcher |
DE3716078A1 (de) * | 1987-05-14 | 1990-06-28 | Rheinmetall Gmbh | Lauf zur beschleunigung von geschossen |
EP0413739B1 (fr) * | 1988-11-11 | 1994-12-21 | Igenwert Gmbh | Accelerateur |
IL89231A (en) * | 1989-02-09 | 1992-11-15 | Israel Atomic Energy Comm | Gun with combined operation by explosive material and plasma |
FR2650882B1 (fr) * | 1989-08-08 | 1994-04-01 | Commissariat A Energie Atomique | Lanceur electrothermique a deux etages |
DE4003320C2 (de) * | 1990-02-05 | 1995-02-09 | Rheinmetall Gmbh | Geschoß für elektrothermische Beschleunigungsvorrichtungen |
US5052272A (en) * | 1990-08-06 | 1991-10-01 | The United States Of America As Represented By The Secretary Of The Navy | Launching projectiles with hydrogen gas generated from aluminum fuel powder/water reactions |
DE4039089A1 (de) * | 1990-12-07 | 1992-06-11 | Diehl Gmbh & Co | Vorrichtung zum beschleunigen eines projektils mittels eines plasmas |
US5231242A (en) | 1991-11-18 | 1993-07-27 | Fmc Corporation | Plasma injection and distribution systems |
US5225624A (en) * | 1991-12-16 | 1993-07-06 | Fmc Corporation | Disintegrating injector for primary and fuel enriched plasma |
DE4142169A1 (de) * | 1991-12-20 | 1993-06-24 | Dynamit Nobel Ag | Zuendvorrichtung zum zuenden eines bei seiner verbrennung gase freisetzenden ladungsmaterials, insbesondere zum zuenden der projektil-treibladung einer waffe |
US5355764A (en) * | 1992-05-04 | 1994-10-18 | Fmc Corporation | Plasma actuated ignition and distribution pump |
US5359919A (en) * | 1993-02-10 | 1994-11-01 | The United States Of America As Represented By The Secretary Of The Army | Method of confinement of propellants for ignition |
US5444208A (en) * | 1993-03-29 | 1995-08-22 | Fmc Corporation | Multiple source plasma generation and injection device |
US5431105A (en) * | 1993-09-16 | 1995-07-11 | Maxwell Laboratories, Inc. | Electrothermal chemical cartridge |
US5503081A (en) * | 1993-11-22 | 1996-04-02 | Fmc Corp | Annular plasma injector |
US5549046A (en) * | 1994-05-05 | 1996-08-27 | General Dynamics Land Systems, Inc. | Plasma generator for electrothermal gun cartridge |
US5612506A (en) * | 1994-10-26 | 1997-03-18 | General Dynamics Land Systems, Inc. | Method of and apparatus for generating a high pressure gas pulse using fuel and oxidizer that are relatively inert at ambient conditions |
-
1997
- 1997-09-24 FR FR9711836A patent/FR2768810B1/fr not_active Expired - Fee Related
-
1998
- 1998-09-10 EP EP98117138A patent/EP0905470B1/fr not_active Expired - Lifetime
- 1998-09-10 DE DE69803262T patent/DE69803262T2/de not_active Expired - Fee Related
- 1998-09-14 US US09/152,483 patent/US6237494B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0905470A1 (fr) | 1999-03-31 |
FR2768810A1 (fr) | 1999-03-26 |
DE69803262T2 (de) | 2002-08-08 |
FR2768810B1 (fr) | 1999-12-03 |
DE69803262D1 (de) | 2002-02-21 |
US6237494B1 (en) | 2001-05-29 |
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