US20220325991A1 - Improvements in or relating to explosive charges - Google Patents
Improvements in or relating to explosive charges Download PDFInfo
- Publication number
- US20220325991A1 US20220325991A1 US17/613,930 US202017613930A US2022325991A1 US 20220325991 A1 US20220325991 A1 US 20220325991A1 US 202017613930 A US202017613930 A US 202017613930A US 2022325991 A1 US2022325991 A1 US 2022325991A1
- Authority
- US
- United States
- Prior art keywords
- explosive
- charge
- liner
- cone
- projectile
- 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.)
- Pending
Links
- 239000002360 explosive Substances 0.000 title claims description 51
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 11
- 239000011777 magnesium Substances 0.000 claims description 10
- 229910052749 magnesium Inorganic materials 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 229920003023 plastic Polymers 0.000 claims description 9
- 239000004033 plastic Substances 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 239000012528 membrane Substances 0.000 claims description 5
- 238000006386 neutralization reaction Methods 0.000 claims description 4
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 12
- 239000002184 metal Substances 0.000 abstract description 12
- 229910001092 metal group alloy Inorganic materials 0.000 abstract description 3
- 238000005474 detonation Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000004200 deflagration Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- LYGJENNIWJXYER-UHFFFAOYSA-N nitromethane Chemical compound C[N+]([O-])=O LYGJENNIWJXYER-UHFFFAOYSA-N 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- 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
- F42B12/04—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of armour-piercing type
- F42B12/10—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of armour-piercing type with shaped or hollow charge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B1/00—Explosive charges characterised by form or shape but not dependent on shape of container
- F42B1/02—Shaped or hollow charges
- F42B1/028—Shaped or hollow charges characterised by the form of the liner
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B1/00—Explosive charges characterised by form or shape but not dependent on shape of container
- F42B1/02—Shaped or hollow charges
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B1/00—Explosive charges characterised by form or shape but not dependent on shape of container
- F42B1/02—Shaped or hollow charges
- F42B1/032—Shaped or hollow charges characterised by the material of the liner
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B1/00—Explosive charges characterised by form or shape but not dependent on shape of container
- F42B1/02—Shaped or hollow charges
- F42B1/036—Manufacturing processes therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B33/00—Manufacture of ammunition; Dismantling of ammunition; Apparatus therefor
- F42B33/06—Dismantling fuzes, cartridges, projectiles, missiles, rockets or bombs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B33/00—Manufacture of ammunition; Dismantling of ammunition; Apparatus therefor
- F42B33/06—Dismantling fuzes, cartridges, projectiles, missiles, rockets or bombs
- F42B33/062—Dismantling fuzes, cartridges, projectiles, missiles, rockets or bombs by high-pressure water jet means
Definitions
- the present invention relates generally to explosive charges and particularly, but not exclusively, to shaped charges.
- a typical shaped charge has a concave metal hemisphere or cone (known as a liner) backed by a high explosive, all in a casing.
- a liner concave metal hemisphere or cone
- a detonation wave is generated; this causes the metal liner to be compressed and squeezed forward, forming a high velocity metallic jet.
- the present invention seeks to provide improvements in or relating to shaped charges.
- An aspect of the present invention provides a liner for a shaped charge, the liner being a generally conical liner, in which the liner is formed from metal or metal alloy and in which the liner has an internal apex angle in the range of approximately 105-110 degrees.
- the angle may be in the range of approximately 107-109 degrees.
- the angle may be approximately 108 degrees.
- a further aspect provides a liner for a shaped charge, the liner being, in which the liner is formed from metal or metal alloy and in which the liner is formed as a section of a hemisphere.
- the liner may be formed from a low-density metal or alloy that is capable of burning.
- the liner is formed from magnesium, copper or aluminium or alloys thereof.
- Examples of embodiments include: a copper jet forming cone; a copper explosively formed projectile; and a magnesium jet forming cone.
- Additional thickness could, for example, be used to maintain roughly the same mass for a lower density metal.
- a further aspect provides an explosive ordnance neutralisation system comprising a low-order explosive shaped charge having a liner, the liner being a die-cast, jet-forming cone having a cone angle of approximately 108 degrees.
- a further aspect provides an explosive ordnance neutralisation system comprising a low-order explosive shaped charge having an EFP-forming liner, the liner having a cone angle of approximately 108 degrees.
- Systems formed in accordance with the present invention may operate in such a way to produce a non-explosive reaction that does not cause a detonation, known as a low order event.
- the liner is systems formed in accordance with the present invention may be formed from magnesium or a magnesium alloy.
- a liner for a shaped charge the liner being a generally conical metal liner, in which the liner is formed from magnesium and in which the liner has an internal apex angle in the range of approximately 105-110 degrees.
- the angle may be in the range of approximately 105-110 degrees, for example 107-109 degrees; such as approximately 108 degrees.
- the metal liner is formed by die casting. This helps to avoid porosity (which can prevent jet formation). In other embodiments the metal liner may be formed by hot-stamping from metal sheet.
- the material of the liner has a generally uniform thickness.
- the present invention also provides a shaped charge fittable with, fitted with, or having a liner as described herein.
- the present invention also provides an explosive ordnance neutralisation system comprising an explosive shaped charge designed to produce a low-order event in a target munition having a liner, the liner being a die-cast magnesium jet-forming cone having a cone angle of 108 degrees.
- Explosives can be categorised by their speed of detonation: low explosives which burn violently or high explosives which detonate.
- the speed of deflagration or detonation are a measure of the power and destructive force of an explosive.
- High explosives detonate producing a shockwave traveling through the explosive material at supersonic speed (typically from 1,800 to 8,000 m/s).
- supersonic speed typically from 1,800 to 8,000 m/s.
- munitions to deflagrate or burn rather than detonate in a process commonly referred to as a “low-order” event.
- low-order event Unlike low explosives such as black powder which can only deflagrate, specific conditions must be maintained in order to cause a high explosive to violently enough to rapidly destroy a munition and consume a significant proportion of the explosive without it undergoing a transition to detonation. Such a low-order event may be preferable in some situations.
- Shaped charges may be used to cause explosive in a munition to react, and the type of reaction depends largely on the size, shape and material of the charge. If too much energy is imparted into the munition, it may shock to detonation. Conversely, imparting too little energy may cause the reaction of not sustain itself and self-extinguish.
- the target explosive shall ignite and with suitable confinement from the munition's outer casing, the pressure within the case shall increase, accelerating the speed of deflagration, causing further pressure increases until the munition's case is unable to retain the high internal pressure and bursts. The munition is opened up, the explosive either burned or scattered and the entire device rendered safe.
- This invention relates to a shaped charge projectile design that produces the ideal conditions for producing a low-order event by using a low-density metallic material capable of burning.
- the shape of the projectile is such that it is in the transition phase between a traditional conical shaped charge capable of deep penetration and an explosively formed projectile (EFP) capable of traveling great distances.
- EFP explosively formed projectile
- it lacks the deep penetrative power of a more conventional shaped charge, typically made from copper having a cone angle between 70 and 45 degrees but has greater penetration than a comparably sized EFP which would form a larger diameter entry hole.
- FIGS. 1-3 illustrate a charge
- FIGS. 4-6 illustrate a further example of a charge of the type described in relation to FIGS. 1 to 3 ;
- FIGS. 7-11 illustrate sections showing distinct sizing and projectiles.
- FIGS. 1 to 3 there is shown a charge generally indicated 10 .
- the charge 10 comprises a generally cylindrical bottle-like container 15 .
- the container includes a generally cylindrical body 16 .
- At one end of the body an inclined wall 17 extends radially inwards.
- a neck 18 is provided and has a central passage 19 .
- a separate screw threaded collar 20 is provided for receiving a detonator and can be screwed onto the neck 18 .
- the other end of the body 16 is closed by a partition/barrier/barrier membrane 25 .
- the membrane 25 has an annular flange 26 that fits onto the open end of the body.
- a short annular skirt 27 depends from the flange. The skirt 27 is positioned to fit into the interior of the body.
- a longitudinal annular leg 29 extends and is closed by a concave plate 30 (so the plate 30 is “inside” the body).
- the interior of the body provides an enclosure 32 for receiving liquid explosive, such as nitromethane.
- a projectile in the form of a die-cast magnesium metal cone 37 having a cone angle of 108 degrees is provided.
- the shape/profile of the cone 37 is complimentary with the shape of the plate/leg.
- the charge diameter is greater than the projectile diameter.
- the container could be formed from a plastics material.
- This embodiment includes a plastic surface between the explosive and the liner which facilitates containing a liquid without leaking, while not adversely affecting the performance of the cone.
- This embodiment uses liquid explosives.
- Other embodiments use a more conventional shaped charge (factory or user-filled) which uses plastic explosive or a cast explosive.
- FIGS. 4 to 6 A further example of a charge of the type described in relation to FIGS. 1 to 3 is shown in FIGS. 4 to 6 .
- the charge 110 is shown assembled in FIG. 6 .
- the body 116 can be filled with liquid explosive and the collar 120 is screwed onto the body 116 .
- a detonator 140 is fitted into the collar and a projectile 137 is fitted into the membrane 125 .
- activation of the detonator 140 causes detonation of the liquid explosive material, which in turn causes projection of the projectile 137 .
- This embodiment provides the feature that there is a plastic surface between the explosive and the liner which facilitates containing a liquid without leaking while not adversely affecting the performance of the cone.
- the explosive used in aspects and embodiments of the present invention could, for example, be a factory cast or pressed explosive, a user-filled plastic explosive or a liquid binary explosive. They key is the detonation velocity.
- FIGS. 7 to 11 are sections showing two sizes and three projectiles for comparison: Copper jet forming cone, Copper explosively formed projectile and Magnesium 108 degree Magnesium jet forming cone. Additional thickness can be used to maintain roughly the same mass for a lower density metal.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
- Toys (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
- The present invention relates generally to explosive charges and particularly, but not exclusively, to shaped charges.
- A typical shaped charge has a concave metal hemisphere or cone (known as a liner) backed by a high explosive, all in a casing. When the high explosive is detonated a detonation wave is generated; this causes the metal liner to be compressed and squeezed forward, forming a high velocity metallic jet.
- The present invention seeks to provide improvements in or relating to shaped charges.
- An aspect of the present invention provides a liner for a shaped charge, the liner being a generally conical liner, in which the liner is formed from metal or metal alloy and in which the liner has an internal apex angle in the range of approximately 105-110 degrees.
- The angle may be in the range of approximately 107-109 degrees.
- The angle may be approximately 108 degrees.
- A further aspect provides a liner for a shaped charge, the liner being, in which the liner is formed from metal or metal alloy and in which the liner is formed as a section of a hemisphere.
- In aspects and embodiments of the present invention the liner may be formed from a low-density metal or alloy that is capable of burning.
- In some embodiments the liner is formed from magnesium, copper or aluminium or alloys thereof.
- Examples of embodiments include: a copper jet forming cone; a copper explosively formed projectile; and a magnesium jet forming cone.
- Additional thickness could, for example, be used to maintain roughly the same mass for a lower density metal.
- A further aspect provides an explosive ordnance neutralisation system comprising a low-order explosive shaped charge having a liner, the liner being a die-cast, jet-forming cone having a cone angle of approximately 108 degrees.
- A further aspect provides an explosive ordnance neutralisation system comprising a low-order explosive shaped charge having an EFP-forming liner, the liner having a cone angle of approximately 108 degrees.
- Systems formed in accordance with the present invention may operate in such a way to produce a non-explosive reaction that does not cause a detonation, known as a low order event.
- The liner is systems formed in accordance with the present invention may be formed from magnesium or a magnesium alloy.
- According to a further aspect of the present invention there is provided a liner for a shaped charge, the liner being a generally conical metal liner, in which the liner is formed from magnesium and in which the liner has an internal apex angle in the range of approximately 105-110 degrees.
- The angle may be in the range of approximately 105-110 degrees, for example 107-109 degrees; such as approximately 108 degrees.
- In some aspects and embodiments the metal liner is formed by die casting. This helps to avoid porosity (which can prevent jet formation). In other embodiments the metal liner may be formed by hot-stamping from metal sheet.
- In some embodiments the material of the liner has a generally uniform thickness.
- The present invention also provides a shaped charge fittable with, fitted with, or having a liner as described herein.
- The present invention also provides an explosive ordnance neutralisation system comprising an explosive shaped charge designed to produce a low-order event in a target munition having a liner, the liner being a die-cast magnesium jet-forming cone having a cone angle of 108 degrees.
- Explosives can be categorised by their speed of detonation: low explosives which burn violently or high explosives which detonate. The speed of deflagration or detonation are a measure of the power and destructive force of an explosive.
- High explosives detonate, producing a shockwave traveling through the explosive material at supersonic speed (typically from 1,800 to 8,000 m/s). When attempting to neutralise a munition in the process of explosive ordnance disposal detonating the munition is not ideal because the damage caused to the surroundings can be significant. It is possible to cause munitions to deflagrate or burn rather than detonate in a process commonly referred to as a “low-order” event. Unlike low explosives such as black powder which can only deflagrate, specific conditions must be maintained in order to cause a high explosive to violently enough to rapidly destroy a munition and consume a significant proportion of the explosive without it undergoing a transition to detonation. Such a low-order event may be preferable in some situations.
- Shaped charges may be used to cause explosive in a munition to react, and the type of reaction depends largely on the size, shape and material of the charge. If too much energy is imparted into the munition, it may shock to detonation. Conversely, imparting too little energy may cause the reaction of not sustain itself and self-extinguish. Ideally, the target explosive shall ignite and with suitable confinement from the munition's outer casing, the pressure within the case shall increase, accelerating the speed of deflagration, causing further pressure increases until the munition's case is unable to retain the high internal pressure and bursts. The munition is opened up, the explosive either burned or scattered and the entire device rendered safe.
- This invention relates to a shaped charge projectile design that produces the ideal conditions for producing a low-order event by using a low-density metallic material capable of burning. The shape of the projectile is such that it is in the transition phase between a traditional conical shaped charge capable of deep penetration and an explosively formed projectile (EFP) capable of traveling great distances. As such it lacks the deep penetrative power of a more conventional shaped charge, typically made from copper having a cone angle between 70 and 45 degrees but has greater penetration than a comparably sized EFP which would form a larger diameter entry hole.
- Different aspects of the present invention may be used separately or together.
- Further particular and preferred aspects of the present invention are set out in the accompanying independent and dependent claims. Features of the dependent claims may be combined with the features of the independent claims as appropriate, and in combination other than those explicitly set out in the claims.
- Referring now to the drawings, wherein like reference numbers are used to designate like elements throughout the various views, several embodiments of the present invention are further described by way of example, in which:
-
FIGS. 1-3 illustrate a charge; -
FIGS. 4-6 illustrate a further example of a charge of the type described in relation toFIGS. 1 to 3 ; and -
FIGS. 7-11 illustrate sections showing distinct sizing and projectiles. - The example embodiments are described in sufficient detail to enable those of ordinary skill in the art to embody and implement the systems and processes herein described. It is important to understand that embodiments can be provided in many alternate forms and should not be construed as limited to the examples set forth herein.
- Accordingly, while embodiment can be modified in various ways and take on various alternative forms, specific embodiments thereof are shown in the drawings and described in detail below as examples. There is no intent to limit to the particular forms disclosed. On the contrary, all modifications, equivalents, and alternatives falling within the scope of the appended claims should be included. Elements of the example embodiments are consistently denoted by the same reference numerals throughout the drawings and detailed description where appropriate.
- Unless otherwise defined, all terms (including technical and scientific terms) used herein are to be interpreted as is customary in the art. It will be further understood that terms in common usage should also be interpreted as is customary in the relevant art and not in an idealised or overly formal sense unless expressly so defined herein.
- In the following description, all orientational terms, such as upper, lower, radially and axially, are used in relation to the drawings and should not be interpreted as limiting on the invention.
- Referring first to
FIGS. 1 to 3 there is shown a charge generally indicated 10. - The
charge 10 comprises a generally cylindrical bottle-like container 15. The container includes a generally cylindrical body 16. At one end of the body aninclined wall 17 extends radially inwards. At the centre of the wall 17 aneck 18 is provided and has acentral passage 19. In this embodiment a separate screw threadedcollar 20 is provided for receiving a detonator and can be screwed onto theneck 18. - The other end of the body 16 is closed by a partition/barrier/
barrier membrane 25. Themembrane 25 has anannular flange 26 that fits onto the open end of the body. A shortannular skirt 27 depends from the flange. Theskirt 27 is positioned to fit into the interior of the body. - At the centre of the flange 26 a longitudinal
annular leg 29 extends and is closed by a concave plate 30 (so theplate 30 is “inside” the body). - The interior of the body provides an
enclosure 32 for receiving liquid explosive, such as nitromethane. - A projectile in the form of a die-cast
magnesium metal cone 37 having a cone angle of 108 degrees is provided. The shape/profile of thecone 37 is complimentary with the shape of the plate/leg. The charge diameter is greater than the projectile diameter. - In some ways, therefore, this could be thought of as a bottle with the correct front/bottom profile to receive a liner.
- The container could be formed from a plastics material.
- This embodiment includes a plastic surface between the explosive and the liner which facilitates containing a liquid without leaking, while not adversely affecting the performance of the cone.
- This embodiment uses liquid explosives. Other embodiments use a more conventional shaped charge (factory or user-filled) which uses plastic explosive or a cast explosive.
- A further example of a charge of the type described in relation to
FIGS. 1 to 3 is shown inFIGS. 4 to 6 . - The charge 110 is shown assembled in
FIG. 6 . Thebody 116 can be filled with liquid explosive and thecollar 120 is screwed onto thebody 116. Adetonator 140 is fitted into the collar and a projectile 137 is fitted into themembrane 125. - In use, activation of the
detonator 140 causes detonation of the liquid explosive material, which in turn causes projection of the projectile 137. - This embodiment provides the feature that there is a plastic surface between the explosive and the liner which facilitates containing a liquid without leaking while not adversely affecting the performance of the cone.
- These embodiments use liquid explosives. In other embodiments a shaped charge (factory or user-filled) which uses plastic explosive or a cast explosive may be provided.
- The explosive used in aspects and embodiments of the present invention could, for example, be a factory cast or pressed explosive, a user-filled plastic explosive or a liquid binary explosive. They key is the detonation velocity.
-
FIGS. 7 to 11 are sections showing two sizes and three projectiles for comparison: Copper jet forming cone, Copper explosively formed projectile and Magnesium 108 degree Magnesium jet forming cone. Additional thickness can be used to maintain roughly the same mass for a lower density metal. - Although illustrative embodiments of the invention have been disclosed in detail herein, with reference to the accompanying drawings, it is understood that the invention is not limited to the precise embodiments shown and that various changes and modifications can be effected therein by one skilled in the art without departing from the scope of the invention.
Claims (18)
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1907438.4 | 2019-05-25 | ||
GB1907438.4A GB2582670B8 (en) | 2019-05-25 | 2019-05-25 | Improvements in or relating to explosive charges |
GB2002939.3A GB2584361B (en) | 2019-05-25 | 2020-03-02 | Improvements in or relating to explosive charges |
GB2002939.3 | 2020-03-02 | ||
PCT/EP2020/062689 WO2020239383A1 (en) | 2019-05-25 | 2020-05-07 | Improvements in or relating to explosive charges |
Publications (1)
Publication Number | Publication Date |
---|---|
US20220325991A1 true US20220325991A1 (en) | 2022-10-13 |
Family
ID=67385411
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17/613,930 Pending US20220325991A1 (en) | 2019-05-25 | 2020-05-07 | Improvements in or relating to explosive charges |
Country Status (4)
Country | Link |
---|---|
US (1) | US20220325991A1 (en) |
EP (2) | EP3745078A1 (en) |
GB (2) | GB2582670B8 (en) |
WO (1) | WO2020239383A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116625175A (en) * | 2023-07-25 | 2023-08-22 | 吉林市双林射孔器材有限责任公司 | Large-aperture pressurizing perforating bullet |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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GB202017072D0 (en) * | 2020-10-27 | 2020-12-09 | Uxo Control B V | Unexploded ordinance disposal method and system |
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US4766813A (en) * | 1986-12-29 | 1988-08-30 | Olin Corporation | Metal shaped charge liner with isotropic coating |
US10274292B1 (en) * | 2015-02-17 | 2019-04-30 | U.S. Department Of Energy | Alloys for shaped charge liners method for making alloys for shaped charge liners |
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DE1946991C3 (en) * | 1969-09-17 | 1978-05-24 | Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen | Shaped charge |
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DE3508740A1 (en) * | 1985-03-12 | 1986-10-16 | Karl 8898 Schrobenhausen Rudolf | Shaped charge for use against concrete-reinforced and/or stone-reinforced targets |
DE3705381A1 (en) * | 1987-02-20 | 1988-09-01 | Diehl Gmbh & Co | Explosive charge with a projecting metal insert |
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US10753183B2 (en) * | 2016-10-13 | 2020-08-25 | Geodynamics, Inc. | Refracturing in a multistring casing with constant entrance hole perforating gun system and method |
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2019
- 2019-05-25 GB GB1907438.4A patent/GB2582670B8/en active Active
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2020
- 2020-03-02 GB GB2002939.3A patent/GB2584361B/en active Active
- 2020-04-09 EP EP20168891.8A patent/EP3745078A1/en active Pending
- 2020-05-07 WO PCT/EP2020/062689 patent/WO2020239383A1/en unknown
- 2020-05-07 EP EP20723779.3A patent/EP3977042A1/en active Pending
- 2020-05-07 US US17/613,930 patent/US20220325991A1/en active Pending
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US4766813A (en) * | 1986-12-29 | 1988-08-30 | Olin Corporation | Metal shaped charge liner with isotropic coating |
US10274292B1 (en) * | 2015-02-17 | 2019-04-30 | U.S. Department Of Energy | Alloys for shaped charge liners method for making alloys for shaped charge liners |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN116625175A (en) * | 2023-07-25 | 2023-08-22 | 吉林市双林射孔器材有限责任公司 | Large-aperture pressurizing perforating bullet |
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WO2020239383A1 (en) | 2020-12-03 |
GB2582670A (en) | 2020-09-30 |
EP3745078A1 (en) | 2020-12-02 |
GB2584361A (en) | 2020-12-02 |
GB2582670A8 (en) | 2023-10-25 |
GB2582670B8 (en) | 2023-10-25 |
GB2584361B (en) | 2023-02-01 |
GB2582670B (en) | 2023-07-12 |
GB201907438D0 (en) | 2019-07-10 |
GB202002939D0 (en) | 2020-04-15 |
EP3977042A1 (en) | 2022-04-06 |
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