Abstract: A warhead system for a projectile-intercepting munition, the warhead system includes a fuselage having an axis and one or more explosively-formed-projectile charge. The explosively-formed-projectile is with a length and configured to generate one or more explosively formed blade projectile propagating substantially perpendicular to the length, the explosively-formed-projectile charge assuming a deployed state wherein the length of the explosively-formed-projectile charge is non-parallel to the axis, the deployed state and the explosively-formed-projectile charge configured such that, when the explosively-formed-projectile charge is detonated in the deployed state, the explosively formed blade projectile propagates in a direction non-coplanar with the length of the explosively-formed-projectile charge and the axis of the fuselage.

Abstract: Embodiments of a reactive shaped charge, a reactive liner, and a method for penetrating a target are generally described herein. The reactive shaped charge comprises a reactive liner having a matrix of reactive metal particles in a hydrocarbon fuel, a high explosive, and an inner barrier separating the reactive liner from the high explosive. The hydrocarbon fuel fills the interstitial spacing between the reactive metal particles, and the matrix is tightly packed or compresses to exhibit a solid like property.

Abstract: A munition includes a casing, the casing formed at least in part from a material comprising (i) a meltable or phase-changing material, and (ii) an energetic material; an explosive payload contained within the casing; and a fuze arrangement, the fuze arrangement comprising a main fuze configured and arranged to ignite the high explosive, and at least one secondary fuze configured and arranged to cause the casing material to melt or undergo a phase change.

Abstract: The invention represents a novel system for controlling the yield of an explosive charge that enables the explosive yield to be selected or decreased from full-yield detonation incrementally down to low-yield detonation using a continuous linear shaped charge jet spiraled around the main charge explosive and deflagrating a selected portion of the main charge explosive. The spiral linear shaped charge jet initiation system activates and projects a liner in a radial direction across a diameter of the main charge explosive in a spiral around its axis at a preselected deflagration velocity toward a main-charge detonation shock front reducing the main charge explosive.

Abstract: The present invention relates to methods and apparatuses for explosive breaching.

Abstract: A method for reducing the amount of ammunition types to be used against a wide set of targets. At least two explosive charges are made use of in cooperation. Each of the explosive charges has changeable characteristics and is arranged to mutually cooperate in different ways depending on the particular changeable characteristics given to the explosive charges in a specific case and the type of target to be combated. An ammunition device admitting a reduction of the amount of ammunition types to be used. At least two cooperating explosive charges are arranged in a row along the direction of movement of the ammunition device when activated. Each of the explosive charges is switchable between at least two operating conditions having different operating characteristics.

Abstract: An oil and gas well shaped charge perforator is provided comprising a housing, a high explosive, and a liner with a further insert liner where the high explosive is positioned between the liner and the housing. In use the high explosive will collapse the liner and insert causing two cutting jets to form. The insert may substantially cover the surface area of the liner or it may over only partially cover the liner, such as the apical portion of the liner or the base portion of liner. Alternatively the insert may be varied in thickness across the surface area of the liner. Typically the thickness of the liner may be between 1 and 10% of the liner diameter and the thickness of the insert may be between 1 and 200% of the thickness of the liner. The insert may be produced during the manufacture of the liner, but preferably the liner will be a retro fitted item.

Abstract: A perforating charge for use in a wellbore includes an explosive and a liner to be collapsed by detonation of the explosive. The liner includes at least a first liner portion and a second liner portion which have different cohesiveness.

Abstract: A single phase metal alloy usually for forming a shaped charge liner for a penetrating jet or explosively formed penetrator forming warhead consists essentially of from a trace to 90%, by weight, of cobalt, from 10% to 50% by weight, of tungsten, and the balance nickel and inevitable impurities. One preferred composition is, by weight, from 16% to 22%, cobalt, from 35% to 40% tungsten and the balance is nickel and inevitable impurities. The alloy is worked and recrystallized and then formed into a desired product. In addition to a shaped charge liner, other useful products include a fragmentation warhead, a warhead casing, ammunition, radiation shielding and weighting.

Abstract: The invention relates to a projectile (1) having a projectile casing (3) in which an explosive charge (8), surrounded by a fragmentation casing, (9) is disposed, wherein the fragmentation casing (9) is fixed to the projectile casing (3), and the projectile (1) comprises a first ignition unit (11) adjacent to the explosive charge (8) disposed to the rear for igniting the explosive charge (8). The projectile (1) may be selectively used as a fragmentation projectile or as a projectile whose effect is due to pressure waves resulting from explosion of the explosive charge (8) due to an ejection charge (15), and the explosive charge (8) is axially displaceable relative to the fragmentation casing (9), which allows the explosive charge (8) to slide out of the projectile casing (3) at least far enough so that the explosive charge cannot act on the fragmentation casing (9) to fragment it.

Abstract: A perforating charge for use in a wellbore includes an explosive and a liner to be collapsed by detonation of the explosive. The liner includes at least a first liner portion and a second liner portion which have different cohesiveness.

Abstract: A munition includes a casing, the casing formed at least in part from a material comprising (i) a meltable or phase-changing material, and (ii) an energetic material; an explosive payload contained within the casing; and a fuze arrangement, the fuze arrangement comprising a main fuze configured and arranged to ignite the high explosive, and at least one secondary fuze configured and arranged to cause the casing material to melt or undergo a phase change.

Abstract: A shaped charge comprises a shell, an explosive charge disposed inside the shell, and a first liner for retaining the explosive charge within the shell. The shaped charge further comprises an acid material disposed inside the shell on the first liner and retained by a second liner into the shell.

Abstract: A liner (18) for a shaped charge (10) that utilizes a high performance powered metal mixture to achieve improved penetration depths during the perforation of a wellbore is disclosed. The high performance powdered metal mixture includes powdered tungsten and powdered metal binder. The powered metal binder may be selected from the group consisting of tantalum, molybdenum, lead, cooper and combination thereof. This mixture is compressively formed into a substantially conically shaped liner (18).

Abstract: An explosive charge is disclosed which has a spatial shape comprising explosive material and, in the course of the explosion, unfolds a spatially anisotropic pressure action in at least one main action direction, in which the pressure action is greater than in the other action directions. The spatial shape comprising the explosive material has a surface area facing toward the at least one main action direction and extends in the at least one main action direction, particles are applied and/or a material layer disintegrating into particles during the explosion is applied to the surface area, the particles comprise a nonexplosive material, and a total mass of the particles is less than a mass of the explosive material.

Abstract: Building on a modular construction of a hand grenade (10), the invention provides a module (1) that can be integrated in the hand grenade (10) and can be equipped with a hollow charge insert (3) in order to act as an armor-penetrating part. The module (1), including the hollow charge insert (3), can be fixed (mounted, screwed, clipped, etc.) at the bottom end of the hand grenade (10) and is attached to the armored element. In the simplest form, the hand grenade (10) is put down, in the case of side walls possibly hung on, and the hand grenade (10) is attached so that the hollow charge insert (3) can exert an adequate effect on the target medium.

Abstract: A shaped charge assembly (10) comprises a housing (20), first shaped charge (24), a wave shaping relay charge (44) and a second shaped charge (30) located in the housing. The assembly (10) is configured such that a first active element formed by initiation of the first shaped charge (24) causes detonation of the wave shaping relay charge (44), which in turn causes initiation of the second shaped charge (30) to form a second active element. The first active element moves beyond a second end (25) of the housing to cause damage of a first kind to an external target and the second active element also moves beyond the second end to cause damage of a second kind to the target.

Abstract: A perforating charge for use in a wellbore includes an explosive and a liner to be collapsed by detonation of the explosive. The liner includes at least a first liner portion and a second liner portion which have different cohesiveness.

Abstract: A shaped charge warhead having a longitudinal axis includes a casing; a liner disposed in the casing; an explosive disposed behind the liner; a wave shaper disposed in the explosive, the wave shaper comprising a low reaction rate high blast reactive material; and a detonator disposed adjacent the explosive. Preferably, the wave shaper is symmetrical about the longitudinal axis. The low reaction rate, high-blast material may be, for example, one of powdered silicon or boron and powdered silicon or boron in a plastic matrix.

Abstract: An explosive charge (3) can be equipped with two liners (4, 5) that can be attached to one another. The primary liner (4) is so devised that when choosing a first choice (11) of being able to work independently and by employing a symmetrical form achieving a forward-aimed Shaped Charge Warhead (SCW) effect upon explosive charge initiation by means of the material (7, 8) indicated for the primary liner. A secondary liner (5) is devised with a second choice (12) to be able to work together with the primary liner and together cause an asymmetric form that distributes the material (18, 19) from the liners at different velocities to thereby cause a forward-directed fragmentation effect. The ammunition unit (1) can, thus, be designed or prepared for two different combat cases in a technologically simple and unambiguous manner.

Abstract: A shaped charge and a method of using such to provide for large and effective perforations in oil bearing sandy formations while causing minimal disturbance to the formation porosity is described. This shaped charge uses a low-density liner having a filler material that is enclosed by outer walls made, preferably, of plastic or polyester. The filler material is preferably a powdered metal or a granulated substance, which is left largely unconsolidated. The preferred filler material is aluminum powder, or aluminum particles, that are coated with an oxidizing substance, such as TEFLON®, permitting a secondary detonation reaction inside the formation following jet penetration. The filled liner is also provided with a metal cap to aid penetration of the gun scallops, the surrounding borehole casing and the cement sheath. The metal cap forms the leading portion of the jet, during detonation.

Abstract: The invention relates to an ammunition arrangement. The ammunition arrangement comprises at least two active parts (2, 3), each with its own active charge (4, 6), arranged axially one behind the other. In order to make large holes in walls and the like without problems of great weight, the second active charge (6) is designed to act essentially in the radial direction at right angles to the direction of movement of the active charge.

Abstract: A penetration-capable projectile has a casing and a fuze with a fuze housing lower part. An interface area between the casing of the projectile and the fuze housing lower part is formed with a shape and/or strength modification which prevents the fuze housing lower part from being pushed into the casing on impact with a target that is to be penetrated.

Abstract: The material or fragment discharge is controlled by means of a device (4) in connection to the triggering, such as by means of an initiation charge (5), of the main charge (3) in the ammunition unit (1). The liner is devised as being exposable for effect from the explosive charge or charges (6) that are devised as being able to be initiated upon or shortly prior to the triggering of the main charge. The explosive charge achieves, upon initiation a pre-deformation of the liner (4) prior to the liner being affected by the triggering of the main charge for the material or fragment discharge The fragment forms can be rendered more effective in relation to design solution known by prior art by means of the choice explosive charge form and placement.

Abstract: Shaped charge liners are made of reactive materials formed by thermal spray techniques. The thermally sprayed reactive shaped charge materials have low porosity and high structural integrity. Upon detonation, the reactive materials of the shaped charge liner undergo an exothermic reaction that raises the temperature and the effectiveness of the liner.

Abstract: A warhead system for a projectile-intercepting munition, the warhead system includes a fuselage having an axis and one or more explosively-formed-projectile charge. The explosively-formed-projectile is with a length and configured to generate one or more explosively formed blade projectile propagating substantially perpendicular to the length, the explosively-formed-projectile charge assuming a deployed state wherein the length of the explosively-formed-projectile charge is non-parallel to the axis, the deployed state and the explosively-formed-projectile charge configured such that, when the explosively-formed-projectile charge is detonated in the deployed state, the explosively formed blade projectile propagates in a direction non-coplanar with the length of the explosively-formed-projectile charge and the axis of the fuselage.

Abstract: A warhead configuration for forming a hole through a wall of a target, the warhead configuration comprising a charge of explosive material and a liner. The charge has an axis and a front surface. The front surface includes two annular front surface portions, an inner and an outer annular portion, circumscribing the axis. Each of the annular front surface portions is configured so as to exhibit a concave profile as viewed in a cross-section through the charge parallel to the axis. The liner includes a first liner disposed adjacent to the inner annular portion and a second liner disposed adjacent to the outer annular portion such that, when the charge is detonated, material from the first liner is formed into a first expanding explosively formed ring and material from the second liner is formed into a second explosively formed ring.

Abstract: Shaped charges that generate fan-like jets can produce slotted holes in rock formations. A shaped charge includes a case having on open front end, an external surface and a longitudinal axis, all transverse cross-sections of the case being bi-symmetric; an explosive material disposed in the case, the case including at least one opening extending from the external surface to the explosive material for initiation of the explosive material; and a liner disposed over the explosive material; wherein a pair of substantially identical longitudinal slots are formed on the external surface, the longitudinal slots being about 180 degrees apart.

Abstract: A kinetic energy rod warhead includes a projectile core which includes a plurality of projectiles and an explosive charge about the core. There is at least one detonator for the explosive charge, and at least one wave shaper in the explosive charge or between the explosive charge and the core and having an apex adjacent the detonator.

Abstract: A liner (18) for a shaped charge (10) that utilizes a high performance powered metal mixture to achieve improved penetration depths during the perforation of a wellbore is disclosed. The high performance powdered metal mixture includes powdered tungsten and powdered metal binder. The powered metal binder may be selected from the group consisting of tantalum, molybdenum, lead, cooper and combination thereof. This mixture is compressively formed into a substantially conically shaped liner (18).

Abstract: Various shaped charges and methods of operation produce multiple jets in various profiles by employing multiple initiation points to address various earthen formations and producing different types of perforations in well bores. The shaped charge device includes a configuration of components wherein multiple detonation tracks are used to allow selective initiation and operation. Dual or quad initiation may be provided to initiate operation.

Abstract: An elongate explosive charge element (25), said explosive charge element (25) including a flexible frangible cutting sheet (26) and an explosive agent (27) said charge element (25) adapted to the penetration of a barrier structure.

Abstract: An oil and gas well shaped charge perforator is provided comprising a housing, a high explosive, and a liner with a further insert liner where the high explosive is positioned between the liner and the housing. In use the high explosive will collapse the liner and insert causing two cutting jets to form. The insert may substantially cover the surface area of the liner or it may over only partially cover the liner, such as the apical portion of the liner or the base portion of liner. Alternatively the insert may be varied in thickness across the surface area of the liner. Typically the thickness of the liner may be between 1 and 10% of the liner diameter and the thickness of the insert may be between 1 and 200% of the thickness of the liner. The insert may be produced during the manufacture of the liner, but preferably the liner will be a retro fitted item.

Abstract: A tandem shaped charge warhead having a forward charge and a rear charge mounted in tandem along a charge axis. The forward charge has a shaped charge liner with an explosive surrounding it, along with a metallic confinement housing surrounding the explosive and liner, with a retaining ring at the front to secure the liner to the confinement housing. The confinement housing has a cavity between the explosive and its' exterior surface which houses a booster and detonator. The rear charge is a conventional shaped charge warhead with a conical liner. A delay timing means is provided for imparting an activation delay in the detonations of the charges from the forward to the rear charge. In one embodiment, a lightweight blast shield is placed between the forward and the rear charge. The tandem system is capable of time delays which exceed the state-of-the-art by more than factor of four.

Abstract: The invention relates to an ignition device for an explosive charge or pyrotechnic composition. This device comprises at least two ignition means connected to a power source. It is characterized in that it comprises a single insulating support carrying the ignition means as well as the conductors ensuring their connection to the power source.

Abstract: A missile, such as a cruise missile, has a nose payload portion having a frangible nose cover and a relatively hard target penetration nose cone. The nose cone may have a liquid fuel tank within, and a chemical energy explosive charge, such as a shaped charge, aft of the liquid fuel tank. The target penetration nose cone enables perforation of certain types of targets prior to detonation of the chemical energy explosive and the liquid fuel. The frangible nose cover is configured to be easily perforated or otherwise removed by the explosive force of the chemical energy explosive charge when the missile system is utilized for the attack of hard targets. The nose payload portion may have a fragmentation case, with one or more features designed to enhance fragmentation during detonation of the explosive and/or the liquid fuel.

Abstract: Shaped charge liners are made of reactive materials formed by thermal spray techniques. The thermally sprayed reactive shaped charge materials have low porosity and high structural integrity. Upon detonation, the reactive materials of the shaped charge liner undergo an exothermic reaction that raises the temperature and the effectiveness of the liner.

Abstract: An ammunition unit, for combating targets (10) with or without using shaped charge effect, that incorporates an openable or removable and replaceable hull or outer casing (2). The explosive charge in the ammunition unit comprises a charge section (3) with shaped charge function arranged to be able to assume either of two freely selectable positions in the ammunition unit, the first of which enables the charge to exert its shaped charge function and the second of which disables the shaped charge function and enables a different effect to be triggered.

Abstract: A method for reducing the amount of ammunition types to be used against a wide set of targets. At least two explosive charges are made use of in cooperation. Each of the explosive charges has changeable characteristics and is arranged to mutually cooperate in different ways depending on the particular changeable characteristics given to the explosive charges in a specific case and the type of target to be combated. An ammunition device admitting a reduction of the amount of ammunition types to be used. At least two cooperating explosive charges are arranged in a row along the direction of movement of the ammunition device when activated. Each of the explosive charges is switchable between at least two operating conditions having different operating characteristics.

Abstract: A multi-purpose tandem warhead needing only a single initiation has a casing that forms front, middle and rear portions. A shaped charge is positioned in the rear portion of the casing and a fragmentation charge is positioned in the front portion of the casing. The middle portion between the front and rear portions is an open area that serves as a jet formation region. An impact switch is positioned at the front of the warhead. Upon impact with a target the impact switch sends a detonation signal to a detonator positioned at the rear end of the warhead causing the shaped charge to initiate. Upon the detonation of the rear shaped charge, a high-speed shaped-charge jet forms into the hollow jet formation region, penetrates into and initiates the forward fragmentation charge, and continues through the fragmentation charge. The residual shaped charge jet provides lethality against light armored targets while the fragmentation from the forward charge provides lethality against personnel and other soft targets.

Abstract: A single phase metal alloy usually for forming a shaped charge liner for a penetrating jet or explosively formed penetrator forming warhead consists essentially of from a trace to 90%, by weight, of cobalt, from 10% to 50% by weight, of tungsten, and the balance nickel and inevitable impurities. One preferred composition is, by weight, from 16% to 22%, cobalt, from 35% to 40% tungsten and the balance is nickel and inevitable impurities. The alloy is worked and recrystallized and then formed into a desired product. In addition to a shaped charge liner, other useful products include a fragmentation warhead, a warhead casing, ammunition, radiation shielding and weighting.

Abstract: A perforating system is disclosed having a perforating gun containing a plurality of radially-oriented shaped charges disposed along the longitudinal axis of the gun. Each charge, when detonated, produce a jet whose penetration velocity exceeds the acoustic velocity of the formation (i.e., target) material to be perforated. A method of operating such a perforating system is also provided, as is a shaped charge having the described characteristics.

Abstract: The invention provides shock initiation devices comprising multilayer structures with constituent layers that undergo an exothermic self-propagating reaction once initiated by shock. The multilayer structures may be used as components in shaped charges, EFP devices, warheads, munition casings, interceptors, missiles, bombs, and other systems. The reactive layer materials may be selected based on required structural properties, density and reaction temperature.

Abstract: Shaped charge liners are made of reactive materials formed by thermal spray techniques. The thermally sprayed reactive shaped charge materials have low porosity and high structural integrity. Upon detonation, the reactive materials of the shaped charge liner undergo an exothermic reaction that raises the temperature and the effectiveness of the liner.

Abstract: An impact part on a projectile permits the activation of detonation systems within a large angular range of contact with a target. The impact part is provided with annular recesses with embedded circular rings that engage with the target and prevent the projectile from rebounding. A thin-walled, dome-shaped tip prevents relatively large disruptive effects upon the projectile's hollow charge. As a result of dimensioning the impact part in accordance with the rules of fracture mechanics, it is possible to achieve a desired fragmentation on the target.

Abstract: A projectile casing is designed to insure proper operation of the charges located therein. The charges are spaced by spacer tubes constructed such that the tubes are dispersed radially after the detonation of the preliminary charge without adversely affecting the effect of the following main charge by shock waves and/or vibrations. Solid shock barriers and damping members are provided in addition to a thin-walled projectile casing. Such a construction has proved successful, in particular, for tandem hollow charges, and also for use against active armour plating.

Abstract: A liner for a shaped charge having a composition comprising greater than 90% by weight of powdered tungsten and up to 10% by weight of powered binder, the composition being formed into a substantially conically shaped body and having a crystal structure of substantially equi-axed grains with a grain size of between 25 nano-meters and 1 micron.

Abstract: Disclosed herein is a shaped charge assembly for use in a perforating gun. The shaped charge assembly includes a shaped charge combined with a longitudinal spine extending along a portion of a perforating gun barrel. The shaped charge can be secured to the spine with a retaining shell. A bushing is included between the outer radius of the casing the retaining shell. The bushing serves to absorb shock during detonation of the shaped charge and to help in orienting the shaped charges.

Abstract: An explosive shell comprising a fusible explosive load placed in a casing incorporating an opening, such shell comprising shimming means placed in the vicinity of the shell opening, such shimming means comprising a ring made of an elastic material placed between a front part of the shell casing and the explosive load, such ring being compressed by compression means, shell wherein the shimming ring incorporates a flange housed in a groove made in the casing of the shell.

Abstract: An active part of an ammunition device. A casing is provided with a sleeve in association with an opening of the casing. A sprung device is arranged between a locking device arranged at the opening of the casing and the sleeve. The end of the sleeve facing away from the sprung device contacts an explosive charge arranged inside the casing of the active part or a liner arranged on the surface of the explosive charge which faces towards the sleeve and the locking device. The locking device is designed to be released from the casing by the action of a force. The active part keeps the active part intact even if materials in the active part have greatly varying coefficients of thermal expansion, while at the same time, in extreme temperatures, the active part is prevented from detonating by the locking device being released from the casing.