FR2686410A1 - Device which unconfines a charge containing an explosive by employing a deformable element made of shape-memory material - Google Patents
Device which unconfines a charge containing an explosive by employing a deformable element made of shape-memory material Download PDFInfo
- Publication number
- FR2686410A1 FR2686410A1 FR9200642A FR9200642A FR2686410A1 FR 2686410 A1 FR2686410 A1 FR 2686410A1 FR 9200642 A FR9200642 A FR 9200642A FR 9200642 A FR9200642 A FR 9200642A FR 2686410 A1 FR2686410 A1 FR 2686410A1
- Authority
- FR
- France
- Prior art keywords
- plug
- ring
- deformable element
- explosive
- shape
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002360 explosive Substances 0.000 title claims abstract description 11
- 239000012781 shape memory material Substances 0.000 title abstract description 6
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 230000000903 blocking effect Effects 0.000 claims abstract description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 229910017535 Cu-Al-Ni Inorganic materials 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 229910002058 ternary alloy Inorganic materials 0.000 claims description 2
- 230000008859 change Effects 0.000 description 7
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 7
- 230000002441 reversible effect Effects 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 229910000734 martensite Inorganic materials 0.000 description 3
- 230000005496 eutectics Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003446 memory effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910017773 Cu-Zn-Al Inorganic materials 0.000 description 1
- 229910004337 Ti-Ni Inorganic materials 0.000 description 1
- 229910011209 Ti—Ni Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000006023 eutectic alloy Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- KHYBPSFKEHXSLX-UHFFFAOYSA-N iminotitanium Chemical compound [Ti]=N KHYBPSFKEHXSLX-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003758 nuclear fuel Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Closures For Containers (AREA)
Abstract
Description
DISPOSITIF ASSURANT LE DECONFINEMENT D'UNE CHARGE
CONTENANT UN EXPLOSIF PAR MISE EN OEUVRE D'UN ELEMENT
DEFORMABLE EN MATERIAU A MEMOIRE DE FORME
La présente invention concerne un dispositif assurant le déconfinement d'une charge contenant un explosif par mise en oeuvre d'un élément déformable en matériau à mémoire de forme.DEVICE FOR DETERMINING A LOAD
CONTAINING EXPLOSIVE BY IMPLEMENTING AN ELEMENT
DEFORMABLE IN SHAPE MEMORY MATERIAL
The present invention relates to a device ensuring the deconfinement of a charge containing an explosive by using a deformable element made of shape memory material.
Plus particulièrement l'invention se rapporte au stockage de charges explosives en toute sécurité, même en cas d'augmentation anormale de la température ambiante, par exemple lors d'un inendie. More particularly the invention relates to the safe storage of explosive charges, even in the event of an abnormal increase in the ambient temperature, for example during a fire.
Lorsque des charges explosives sont la proie d'un incendie, l'élévation de température entraîne un changement d'état du chargement principal qui se traduit par une augmentation de pression à l'intérieur des enceintes de ces charges et l'explosion de ces dernières. When explosive charges are destroyed by fire, the rise in temperature causes a change in state of the main charge, which results in an increase in pressure inside the chambers of these charges and the explosion of the latter. .
Afin d'éviter ce risque, différents dispositifs ont été proposés. In order to avoid this risk, various devices have been proposed.
Le brevet français 2 628 833 décrit un dispositif assurant le déconfinement d'une charge militaire contenant un explosif. French patent 2,628,833 describes a device ensuring the deconfinement of a military charge containing an explosive.
Selon ce dispositif, l'organe de fermeture du corps de la charge est constitué de deux parties reliées par un alliage eutectique permettant la désolidarisation de ces parties, et assurant ainsi le déconfinement, dès que la température de changement d'état de l'eutectique est atteinte. According to this device, the closing member of the body of the load is made up of two parts connected by a eutectic alloy allowing the separation of these parts, and thus ensuring deconfinement, as soon as the temperature of change of state of the eutectic is reached.
Ces deux parties de l'organe de fermeture sont solidarisées par une bague équipée d'un dispositif à filetages ou autre permettant par rotation de prendre soit une position de maintien des deux parties interdisant toute désolidarisation et donc tout déconfinement en phase opérationnelle, soit autorisant la désolidarisation en phase de stockage de la charge. These two parts of the closure member are secured by a ring equipped with a threading device or the like allowing by rotation to take either a position for holding the two parts preventing any separation and therefore any deconfinement in the operational phase, or allowing the decoupling in charge storage phase.
Cependant, un tel dispositif présente l'inconvénient de nécessiter des positions de solidarisation différentes suivant les phases d'emploi afin de pallier un manque de résistance mécanique du matériau eutectique. En corollaire, lors de la phase opérationnelle, la charge n'est plus protégée en cas d'agression thermique. However, such a device has the drawback of requiring different fastening positions depending on the phases of use in order to compensate for a lack of mechanical strength of the eutectic material. As a corollary, during the operational phase, the load is no longer protected in the event of thermal attack.
Par ailleurs, on connaît des alliages dits à mémoire de forme. Ces matériaux peuvent posséder deux formes différentes, une à plus haute température et l'autre à plus basse température et passer de l'une à l'autre de façon continue dans cet intervalle de température. Furthermore, so-called shape memory alloys are known. These materials can have two different shapes, one at higher temperature and the other at lower temperature and pass from one to the other continuously in this temperature range.
Ce comportement, totalement différent de la dilatation thermique, est dû à un changement de phase cristalline réversible. This behavior, totally different from thermal expansion, is due to a reversible change in crystalline phase.
Le changement de forme engendré par un changement de température peut être utilisé pour accomplir un travail. The change in shape caused by a change in temperature can be used to accomplish a job.
Selon les modalités appliquées, la mémoire de forme se présente sous deux aspects différents : l'effet de mémoire simple et l'effet de mémoire réversible ou double sens. Depending on the methods applied, shape memory comes in two different aspects: the effect of simple memory and the effect of reversible or two-way memory.
Dans l'effet de mémoire réversible, après certains traitements thermomécaniques spéciaux, appelés éducation, un changement de forme est observé au refroidissement. In the effect of reversible memory, after certain special thermomechanical treatments, called education, a change in shape is observed on cooling.
Ces propriétés des matériaux à mémoire de forme sont utilisées dans le dispositif d'obturation d'un corps creux décrit dans le brevet français 2 608 727. Dans ce dispositif, un élément déformable à deux états de mémoire de forme réversibles permet d'assurer le blocage à température ambiante et le déblocage à une température différente de celle-ci. These properties of shape memory materials are used in the device for closing a hollow body described in French patent 2 608 727. In this device, a deformable element with two reversible shape memory states makes it possible to ensure the blocking at room temperature and unlocking at a temperature different from this.
Selon un mode de réalisation, le dispositif est constitué par une bague fendue en matériau élastique dont le diamètre est voisin de celui du corps creux et d'un anneau en matériau à deux états de mémoire de forme réversibles, cet anneau étant engagé à la périphérie de la bague. According to one embodiment, the device consists of a split ring of elastic material whose diameter is close to that of the hollow body and of a ring of material with two reversible shape memory states, this ring being engaged at the periphery of the ring.
Ce type de dispositif particulièrement bien adapté au stockage et au conditionnement de pastilles de combustible nucléaire ne peut s'appliquer au déconfinement de charges explosives, à cause des pressions considérables qui s'excercent dans ces charges et du domaine opérationnel de température qui varie de - 40"C à + 70"C. This type of device which is particularly well suited for the storage and packaging of nuclear fuel pellets cannot be applied to the deconfinement of explosive charges, because of the considerable pressures which are exerted in these charges and the operational range of temperature which varies from - 40 "C to + 70" C.
L'objectif de l'invention est de proposer un dispositif de déconfinement d'une charge, ce dispositif étant entièrement mécanique, ne comportant aucun élément pyrotechnique, de conception simple, facile à mettre en place et à démonter et remplissant pleinement son rôle lors de l'échauffement superficiel de la charge, que ce soit en phase de stockage ou en phase d'utilisation. The objective of the invention is to propose a device for deconfining a charge, this device being entirely mechanical, comprising no pyrotechnic element, of simple design, easy to set up and to dismantle and fully fulfilling its role during the surface heating of the load, whether in the storage phase or in the use phase.
Son principe repose sur l'utilisation des propriétés des alliages à mémoire de forme, comme dans le dispositif d'obturation selon le brevet français 2 608 727. Its principle is based on the use of the properties of shape memory alloys, as in the sealing device according to French patent 2 608 727.
Cependant, le système de fermeture décrit dans le brevet français précité ne peut s'appliquer à des conteneurs renfermant des charges pyrotechniques. En particulier, la structure décrite dans le brevet français 2 608 727 est inadéquate dans cette application, en raison des efforts en cisaillement qui s'excercent et qui risquent d'empêcher la bague de se refermer. De plus, les fortes pressions entraînent des frictions très importantes prohibant l'usage d'une bague fendue. However, the closure system described in the aforementioned French patent cannot be applied to containers containing pyrotechnic charges. In particular, the structure described in French patent 2 608 727 is inadequate in this application, due to the shearing forces which are exerted and which risk preventing the ring from closing. In addition, strong pressures cause very significant friction prohibiting the use of a split ring.
Afin de répondre à l'objectif défini ci-dessus, l'invention a pour objet un dispositif assurant le déconfinement d'une charge contenant un explosif du type comprenant un bouchon d'étanchéité et un moyen de fixation de ce bouchon, caractérisé en ce que le moyen de fixation du bouchon comprend un élément déformable en un matériau à mémoire de forme susceptible d'occuper successivement une position de blocage à la température ambiante et une position de déblocage lorsque la température ambiante est supérieure à une valeur critique prélablement définie. In order to meet the objective defined above, the invention relates to a device ensuring the deconfinement of a charge containing an explosive of the type comprising a sealing plug and a means of fixing this plug, characterized in that that the means for fixing the plug comprises a deformable element made of a shape memory material capable of successively occupying a blocking position at ambient temperature and a unlocking position when the ambient temperature is above a previously defined critical value.
L'élément déformable est de préférence une bague. Pour les raisons évoquées précédemment, cette bague ne doit pas être fendue. The deformable element is preferably a ring. For the reasons mentioned above, this ring must not be split.
La bague est réalisée en alliage à mémoire de forme. The ring is made of shape memory alloy.
Lorsqu'un alliage classique est soumis à une contrainte mécanique supérieure à sa limite d'élasticité, il subit une déformation qui persiste après disparition de la contrainte. When a conventional alloy is subjected to a mechanical stress greater than its elastic limit, it undergoes a deformation which persists after the stress has disappeared.
La forme n'évolue pratiquement plus si l'on soumet ensuite l'alliage à un traitement thermique. The shape hardly changes any more if the alloy is then subjected to a heat treatment.
Par contre, dans une certaine gamme de températures, les alliages à mémoire de forme peuvent subir une déformation et récupérer leur forme initiale par chauffage. On the other hand, in a certain range of temperatures, the shape memory alloys can undergo a deformation and recover their initial shape by heating.
Cet effet semble dû à la présence de défauts favorisant la croissance de variantes particulières. Si ces défauts sont stables, l'effet de mémoire réversible peut se répéter lors de cycles successifs. This effect seems to be due to the presence of defects favoring the growth of particular variants. If these faults are stable, the reversible memory effect can be repeated during successive cycles.
Parmi les alliages à mémoire de forme, on peut citer les alliages Cu-Al-Ni, Cu-Zn-Al-(Ni), Cu-Zn-Al, et Ti-Ni. Among the shape memory alloys, mention may be made of the Cu-Al-Ni, Cu-Zn-Al- (Ni), Cu-Zn-Al, and Ti-Ni alloys.
Les différents métaux présents dans ces alliages sont en proportions variables, selon les plages de températures auxquelles on s'intéresse et qui peuvent varier de - 40"C à + 70"C. The different metals present in these alloys are in variable proportions, according to the temperature ranges in which we are interested and which can vary from - 40 "C to + 70" C.
Préférentiellement, on utilise un alliage ternaire
Cu-Al-Ni constitué par 83 % de cuivre, 13 % d'aluminium et 4 % de nickel, les pourcentages étant exprimés en masse.Preferably, a ternary alloy is used
Cu-Al-Ni consisting of 83% copper, 13% aluminum and 4% nickel, the percentages being expressed by mass.
Selon un mode de réalisation, le bouchon d'étanchéité 3 comporte à sa périphérie une bague de serrage déformable lJun disque de guidage 6 est fixé sur la partie supérieure du bouchon 3, et le maintien du bouchon 3 et du disque de guidage 6 est assuré par un dispositif de serrage 2. According to one embodiment, the sealing plug 3 has at its periphery a deformable tightening ring 1 a guide disc 6 is fixed on the upper part of the plug 3, and the plug 3 and the guide disc 6 are held in place by a clamping device 2.
D'autres caractéristiques et avantages de l'invention apparaîtront dans la description suivante d'un exemple non limitatif, en référence aux figures 1 et 2 représentant respectivement une vue en coupe longitudinale d'un conteneur muni d'un dispositif selon l'invention et le fonctionnement du dispositif conforme à l'invention. Other characteristics and advantages of the invention will appear in the following description of a nonlimiting example, with reference to FIGS. 1 and 2 respectively representing a view in longitudinal section of a container provided with a device according to the invention and the operation of the device according to the invention.
Le bouchon d'étanchéité 3 est recouvert par un disque de guidage 6. The sealing plug 3 is covered by a guide disc 6.
Ce bouchon est maintenu en place par un sytème de serrage constitué par une bague 2. This plug is held in place by a tightening system constituted by a ring 2.
Le bouchon est muni à sa périphérie d'une bague déformable en alliage à mémoire de forme 1. The cap is provided at its periphery with a deformable ring made of shape memory alloy 1.
Le bouchon présente un épaulement dans lequel est logé un joint torique 4 destiné à assurer l'étanchéité. The plug has a shoulder in which is housed an O-ring 4 intended to ensure sealing.
Le fonctionnement du dispositif selon l'invention est schématisé sur la figure 2. The operation of the device according to the invention is shown diagrammatically in FIG. 2.
A température ambiante, la bague 1 est dans une forme telle qu'elle vient bloquer le dispositif d'obturation de la charge, comme représenté en 2A. Si un échauffement de la charge se produit, la bague 1 subit, à une température donnée, une diminution de son diamètre de 2 à 2,5 %, comme représenté en 2B. Ce changement de forme est dû à un passage de la phase martensitique à la phase austénitique. La température à laquelle cette transformation se produit est facilement modifiable par le choix de la composition de l'alliage. At room temperature, the ring 1 is in a shape such that it blocks the load shut-off device, as shown in 2A. If a heating of the load occurs, the ring 1 undergoes, at a given temperature, a reduction in its diameter from 2 to 2.5%, as shown in 2B. This change in shape is due to a transition from the martensitic phase to the austenitic phase. The temperature at which this transformation occurs is easily modifiable by the choice of the composition of the alloy.
Lorsque la bague est ainsi rétractée, elle libère l'appui sur le dispositif de serrage et le bouchon peut être éjecté, comme représenté en 2C. When the ring is thus retracted, it releases the support on the clamping device and the plug can be ejected, as shown in 2C.
La fabrication de la bague déformable selon l'invention comporte les étapes suivantes. The manufacture of the deformable ring according to the invention comprises the following steps.
La bague 1 est usinée à l'état austénitique à un diamètre extérieur inférieur au diamètre intérieur du dispositif de serrage 2. ELle est ensuite refroidie à température ambiante pour la faire passer à l'état martensitique. The ring 1 is machined in the austenitic state to an outside diameter smaller than the inside diameter of the clamping device 2. It is then cooled to room temperature to make it go to the martensitic state.
Par application d'une contrainte mécanique, la bague est étirée dans son état martensitique à un diamètre tel que grâce à son épaisseur elle vienne bloquer le bouchon d'étanchéité 3 et le dispositif de serrage 2. By applying mechanical stress, the ring is stretched in its martensitic state to a diameter such that, thanks to its thickness, it comes to block the sealing plug 3 and the tightening device 2.
La fermeture du conteneur renfermant une charge explosive est effectuée comme indiqué ci-après. The closure of the container containing an explosive charge is carried out as indicated below.
Le bouchon 3 muni de son joint torique d'étanchéité 4 est mis en place sur le corps de la charge 5. The plug 3 provided with its O-ring seal 4 is placed on the body of the load 5.
La bague en alliage à mémoire de forme I est placée sur le bouchon d'étanchéité. Le disque de guidage 6 est fixé, par exemple par vissage, sur le bouchon. Enfin, le dispositif de serrage 2 est fixé sur le corps de la charge. The shape memory alloy ring I is placed on the sealing plug. The guide disc 6 is fixed, for example by screwing, to the plug. Finally, the clamping device 2 is fixed to the body of the load.
Selon une variante de réalisation, on peut utiliser le dispositif selon l'invention pour désolidariser un tronçon de la charge. According to an alternative embodiment, the device according to the invention can be used to separate a section of the load.
De manière plus générale, le dispositif selon l'invention peut s'appliquer à la réalisation d'une jonction permanente par effet de mémoire simple dans des systèmes d'assemblage ou de fermeture soumis à de très fortes pressions. More generally, the device according to the invention can be applied to the production of a permanent junction by simple memory effect in assembly or closure systems subjected to very high pressures.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9200642A FR2686410A1 (en) | 1992-01-22 | 1992-01-22 | Device which unconfines a charge containing an explosive by employing a deformable element made of shape-memory material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9200642A FR2686410A1 (en) | 1992-01-22 | 1992-01-22 | Device which unconfines a charge containing an explosive by employing a deformable element made of shape-memory material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2686410A1 true FR2686410A1 (en) | 1993-07-23 |
| FR2686410B1 FR2686410B1 (en) | 1995-06-02 |
Family
ID=9425866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9200642A Granted FR2686410A1 (en) | 1992-01-22 | 1992-01-22 | Device which unconfines a charge containing an explosive by employing a deformable element made of shape-memory material |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2686410A1 (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0738869A1 (en) * | 1995-04-18 | 1996-10-23 | Protac | Deconfinement of a military explosive charge by differential expansion |
| FR2742221A1 (en) * | 1995-12-12 | 1997-06-13 | Soc D Ateliers Mecaniques De P | Munition disarming assembly |
| FR2747774A1 (en) * | 1994-03-25 | 1997-10-24 | Thomson Brandt Armements | Pyrotechnic propulsion unit, e.g. for military projectile |
| WO2002003019A1 (en) * | 2000-07-03 | 2002-01-10 | Saab Ab | Method and arrangement for preventing encased explosives being caused to explode by an external fire |
| WO2004015360A1 (en) * | 2002-08-12 | 2004-02-19 | Qinetiq Limited | Temperature responsive safety devices for munitions |
| EP1617170A1 (en) * | 2004-07-16 | 2006-01-18 | Giat Industries | Vorrichtung für die Freilegung eines Explosivladung enthaltenden Behälters |
| US7107909B2 (en) * | 2004-04-08 | 2006-09-19 | Nico-Pyrotechnik Hanns-Jurgen Diederichs & Co., Kg | Cartridge munition, particularly one of medium caliber |
| FR2906606A1 (en) * | 2006-09-29 | 2008-04-04 | Giat Ind Sa | Safety pressure release for casing of munition, e.g. artillery projectile, with explosive charge and fuse, comprises connecting ring attached to fuse by connection sheared by pressure increase |
| US7353755B2 (en) * | 2003-12-22 | 2008-04-08 | Giat Industries | Deconfinement device for the casing of a piece of ammunition |
| WO2010041988A1 (en) * | 2008-10-10 | 2010-04-15 | Saab Ab | A cartridge case and a round comprising such a cartridge case |
| WO2010041987A1 (en) * | 2008-10-10 | 2010-04-15 | Saab Ab | A cartridge case and a round comprising such a cartridge case |
| US8082846B2 (en) | 2002-08-12 | 2011-12-27 | Qinetiq Limited | Temperature responsive safety devices for munitions |
| US8616131B2 (en) | 2007-07-25 | 2013-12-31 | Qinetiq Limited | Rupturing devices |
| DE102014001576A1 (en) * | 2014-02-06 | 2015-08-06 | Diehl Bgt Defence Gmbh & Co. Kg | Propellant charge case for a cartridge ammunition |
| WO2015156710A1 (en) * | 2014-04-11 | 2015-10-15 | Saab Ab | Arrangement for locking arming conditions |
| CN110470188A (en) * | 2019-08-15 | 2019-11-19 | 中国工程物理研究院化工材料研究所 | A kind of safe breaking method of explosive structural member |
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| FR2742221A1 (en) * | 1995-12-12 | 1997-06-13 | Soc D Ateliers Mecaniques De P | Munition disarming assembly |
| WO2002003019A1 (en) * | 2000-07-03 | 2002-01-10 | Saab Ab | Method and arrangement for preventing encased explosives being caused to explode by an external fire |
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| DE102014001576A1 (en) * | 2014-02-06 | 2015-08-06 | Diehl Bgt Defence Gmbh & Co. Kg | Propellant charge case for a cartridge ammunition |
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| WO2015156710A1 (en) * | 2014-04-11 | 2015-10-15 | Saab Ab | Arrangement for locking arming conditions |
| US9851190B2 (en) | 2014-04-11 | 2017-12-26 | Saab Ab | Arrangement for locking arming conditions |
| CN110470188A (en) * | 2019-08-15 | 2019-11-19 | 中国工程物理研究院化工材料研究所 | A kind of safe breaking method of explosive structural member |
| CN110470188B (en) * | 2019-08-15 | 2024-05-14 | 中国工程物理研究院化工材料研究所 | Safe crushing method for explosive structural member |
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