Abstract: A method is provided for dispersing and/or disrupting an aligned jet from a haped charge round. A fluted shaped charge liner, typically used to compensate for spin effects on a coherent jet in a spin stabilized round is applied to a non-spinning round to produce a dispersed and/or disrupted jet pattern. The effect of disruption may also be altered by altering the subcalibration ratio (ratio of liner diameter to charge diameter). For a given liner diameter, an increase in charge diameter may result in increased dispersion of the jet. In addition, other types of spin compensated liners such as those using so-called metallurgical spin compensation, may be applied to a non-spinning round to produce dispersion and/or disruption of the jet. Moreover, the rate of spinning of the round (or the direction of spin) may be altered such that the spin compensated liner produces a dispersed jet pattern.

Abstract: A liner for a shaped charge formed from a mixture of powdered tungsten and powdered metal binder. The liner is formed by compression of the mixture into a substantially conically shaped solid body. In a preferred embodiment of the invention, the mixture comprises approximately 80 percent by weight of tungsten and 20 percent of the powdered metal binder. In a specific embodiment of the invention, graphite powder is intermixed with the powdered metal binder and tungsten to act as a lubricant. The powdered metal binder preferably comprises a malleable, ductile metal such as lead, bismuth, tin, zinc, silver, antimony, cobalt, nickel or uranium.

Abstract: A fragmentation casing for a secondary projectile of a tandem warhead which includes a forwardly located active charge, a rearwardly located active charge and a fuze arranged between the charges. The secondary projectile possesses on both sides thereof a generally ovoid, thick-walled and uniformly thick nose cone with a heavy wall thickness and with an inwardly located separate fragment charge; a one-sided overhung fastening of a fuze through a collar extending between two housing parts of the secondary projectile, whereby the fuze is almost completely and; in essence, also around the periphery thereof, embedded in the explosive of the rearwardly located active charge, and with a gapless arrangement of the interconnected active charges, the casing, the prefinished fragments and the nose cones.

Abstract: This invention involves a warhead, for use against armor containing several reactive stages, specifically, an anti-tank warhead, of a type comprising shape charges acting sequentially from front to rear and separated by protective elements. It includes:a front module containing at least two tandem-mounted shape charges (1, 2) whose caliber is between 25 and 50% of the caliber of the warhead, with a delay of 100 to 500 microseconds between their respective initiations; anda main charge (3) whose caliber is the same as that of the warhead and which is initiated after a delay of 200 to 2000 microseconds after initiation of the rear charge in the front module.Applications involve shells, rockets or missiles intended to attack multi-stage, spaced, composite or reactive armor.

Abstract: An improved shaped charge for generating a jet. A lens shaped waveshaper is positioned within the explosive material of a shaped charge to modify the shape of the divergent detonation wave into a planar wave or a converging wave. The waveshaper is formed with a low sound speed material having a high index of refraction. By reshaping the detonation wave, the acceleration of the shaped charge liner is increased, and the penetration depth and hole size of the jet can be increased. The shaped charge operates more efficiently, thereby requiring less explosive material than a conventional shaped charge.

Abstract: The present invention relates to a tandem warhead with a secondary projectile. An explosives gas protector shields the secondary projectile with respect to a hollow charge located in front of the secondary projectile, and wherein the housing possesses a conical section having a tubular segment of smaller diameter arranged thereon, whereby a bottom is provided on the tubular section which opposite the hollow charge has the secondary projectile smaller in caliber and at its circumference includes a screwthread into which there engages a screwthread of the tubular section, and whereby the secondary projectile contacts against the bottom under prestressing.

Abstract: The invention relates to an insert for a warhead for producing a projectile by means of an explosive deformation of the insert.In order to achieve increased end-ballistic performances of the projectile formed by the explosive deformation of the insert, such insert is tapered at its peripheral region and has a flattened central region on the convex side thereof.

Abstract: The jet of a shaped charge ammunition round may be disrupted and dispersed y altering the local charge to mass ratio within the shaped charge round. A shaped charge round typically produces a coherent jet suitable for penetrating thick armor or the like. However, such coherent jets may be unsuitable for damaging thinner targets. By placing a mass (or removing a mass) at a local portion of the shaped charge liner, the outer casing, or the explosive charge, the local charge to mass ratio may be altered, causing disruption of the coherent jet. A wire, wrapped around the charge liner in a spiral fashion, may be used to produce a substantially helical or spiral shaped jet which may be particularly applicable for damaging missiles or the like.

Abstract: An apparatus and method for producing a selectable effects explosively fod penetrator warhead having the ability to defeat either single armored targets or a multiplicity of lightly armored targets.

Abstract: A hemispherical shaped charge has been modified such that one side of the hemisphere is spherical and the other is aspherical allowing a wall thickness variation in the liner. A further modification is to use an elongated hemispherical shape. The liner has a thick wall at its pole and a thin wall at the equator with a continually decreasing wall thickness from the pole to the equator. The ratio of the wall thickness from the pole to the equator varies depending on liner material and HE shape. Hemispherical shaped charges have previously been limited to spherical shapes with no variations in wall thicknesses. By redesign of the basic liner thicknesses, the jet properties of coherence, stability, and mass distribution have been significantly improved.

Abstract: A projectile includes an explosive charge, a corresponding initiating device, a penetrator that only deforms upon impact with a target having a predetermined mechanical resistance, an internal impact contactor arranged between the penetrator and the charge, and a device to ensure initiation of the charge following crushing of the internal impact contactor and after the explosive charge has begun to be deformed following impact on the target. The projectile is particularly effective against hard targets such as stone, brick or cement structures.

Abstract: A dual operating mode warhead comprises a generally cylindrical explosive charge having a longitudinal axis and an outer peripheral surface extending between front and rear facing initiation surfaces. A front detonator initiates peripheral detonation of the explosive charge at the front facing initiation surface and creates a detonation wave travelling through the explosive charge toward the rear facing initiation surface. A rear detonator initiates detonation of the explosive charge at the rear facing initiation surface and creates a detonation wave travelling through the explosive charge and toward the forward facing initiation surface. Against heavy armor, only the rear initiation is used. A precision shaped charge proximate the front facing surface is responsive to the rear detonation wave to produce a high speed forward travelling jet with excellent armor piercing capability.

Abstract: The invention relates to warheads including a core-generating charge and rotating about an axis which is not the charge axis. In front of the coating of the charge is positioned a wedge with a straight or curved triangular cross section, for slowing down said coating in a non-isotropic manner. The wedge is further destroyed during the formation of the core.

Abstract: The invention is a lid for a shaped charge which enables application of torque to the shaped charge for mounting in an expendable bar carrier borehole penetrating gun assembly. The lid comprises a plurality of flat surfaces facially parallel with the axis of a threaded stud forming part of the lid, the stud engaging mating threads in a hole in the carrier. The flat surfaces are arranged around the circumference of the lid so that a wrench or socket can be used to apply torque to the lid for mounting in the carrier. Each juncture of two contiguous ones of the flat surfaces includes a score line extending substantially perpendicular to the axis of the stud.In a preferred embodiment of the invention each juncture includes a crimp on part of the juncture on a side of the score line opposite to the stud, to retain the lid on the charge.The invention is also an apparatus for simultaneously torquing a plurality of shaped charged in a bar carrier. Each of the shaped charges comprises the charge lid of the invention.

Abstract: The invention relates to a tandem warhead with a preliminary charge (1) and a main charge (2) respectively each with an associated fuse (3, 4).So that on ignition two fuses (3, 4) which are completely identical can be used, piezoelectrical percussion fuses (3, 4) are used which can be triggered by shockwaves. To establish the delay period of the fuses (3, 4) the housing construction, the arrangement of the fuses (3, 4) and the material composition of the housing (5) are to be selected in such a way that the propagation time of the shockwave imparts the required delay period.

Abstract: A shaped charge includes a case, an explosive material packed against the inner wall of the case, and a liner for lining the explosive material, where the liner includes Bismuth and Copper powders as constituent elements. The Bismuth element replaces a Lead element which is normally present as a constituent element in prior art shaped charge liners. Bismuth is superior to Lead because all environmental concerns, with respect to the deposition of Lead in a formation, have been eliminated.

Abstract: An explosive device with a hollow charge of the type including a main warhead with a wave shaper and a primary warhead for the penetration of active primary armor. The primary warhead comprises a hollow charge provided at the apex of the main warhead and separated from the latter by wave transmitting means in the form of a third hollow charge placed inverted relative to the other two hollow charges, the primary warhead also acting as a wave shaper for the main warhead.

Abstract: A hypervelocity projectile launcher for use in perforating borehole casings provides improved penetration into the surrounding rock structure. The launcher includes a first cylinder of explosive material that defines an axial air-filled cavity, a second cylinder of explosive material defining an axial frustum-shaped cavity abutting and axially aligned with the first cylinder. A pliant washer is located between and axially aligned with the first and second cylinders. The frustum shaped cavity is lined with a metal liner effective to form a projectile when the first and second cylinders are detonated. The washer forms a unique intermediate projectile in advance of the liner projectile and enables the liner projectile to further penetrate into and fracture the adjacent rock structure.

Abstract: An improved explosively formed penetrator and a method of manufacturing same for forming an elongated rod-like penetrator having aerodynamically stabilizing fins, but without requiring any exotic production processes for shaping or modifying the characteristics of a conventional liner normally used in such penetrators. The present invention comprises a specially shaped thin foil which is placed between the liner and the explosive charge and which provides a selected plurality of radial legs which, in a preferred embodiment, are symmetrically placed around a center portion axially aligned with the center of the liner. The combined axial thickness of the liner and the radial legs of the thin foil lag behind the thinner portions of the liner alone, thereby causing the explosively formed penetrator to form unevenly, hence forming fins.

Abstract: An armor piercing projectile having a ramjet engine located at the forward nd such that the exhaust nozzles of the ramjet engine are located at or near the center of gravity of the projectile. A warhead is contained in the center portion of the projectile and is either a shaped charge device or a high explosive warhead. A tail boom with stabilizing fins is located at the rear of the projectile. In an alternate embodiment, the ramjet engine is attached by an extension sleeve to the warhead allowing it to telescope after launch and provide increased standoff for better penetration by the shaped charge. Another embodiment allows the ramjet motor to detach prior to impact at the target to better allow the warhead to penetrate. A further embodiment incorporates an armor piercing subprojectile located within the centerbody of the ramjet motor.

Abstract: A method of securing a liner or inlay in an opening of a case surrounding a shaped explosive charge on all sides except for the opening, the opening facing the direction of the intended effect of the charge. The liner or inlay defines the shape of the charge in the direction of the intended effect of the charge. The method comprises immovably securing the liner or inlay in a direction parallel to the direction of the intended effect of the charge, and simultaneously resiliently securing the liner or inlay in a direction orthogonal to the direction of the intended effect of the charge, whereby a clearance is exists between an outer edge of the inlay or liner and an inner wall of the case.

Abstract: An explosively forged elongated penetrator including a liner having a central section, an intermediate section and a peripheral section; the axial velocity of the sections being approximately equal; the axial thicknesses of the sections decreasing from the central to the peripheral section; the radial velocity increasing from the central to the peripheral section; and the line profile angle decreasing from the central to the peripheral section, to define an explosively driven, inwardly directed, centrally focused force for forging the penetrator from the liner substantially independently of the axial velocities.

Abstract: A directed-effect submunition moves in a substantially vertical direction V with a displacement velocity v parallel to V and a rotation velocity r about an axis parallel to V. The submunition includes a shaped charge with axis D forming an acute angle t with axis V and a detection device with axis d forming an angle u with axis D, a target detecting device, and a triggering device. The submunition also includes a displacement velocity v determining device, and a calculation device for calculating as a function of v a value u.sub.i for angle u that minimizes deviation (e) between the position (M) of a target detected, and impact point (M') of the penetrator of the shaped charge if the latter were triggered upon detection, as well as a device for imparting the value u.sub.i to angle u.

Abstract: A shaped charge liner formed of a solid metallic material having a fine grain size of the order of 25 microns or less. The material can be, for example, copper, uranium, tantalum or an alloy showing superplasticity and having a density greater than about 5 gm/cm.sup.3. The liner can be made by subjecting the material to repeated cycles of cold working, annealing at just above the recrystallization temperature, and quenching.

Abstract: A high performance shaped charge for piercing high strength steel has a symmetry of revolution about an axis; a priming system constituted by a punctiform initiating source for producing a detonation wave in a block of donor explosive, and a cavity positioned between the donor explosive and a receiver explosive, the cavity being shaped in such a way that the detonation wave from the receiver explosive which enters a charging explosive is planar and perpendicular to the axis of the charge.

Abstract: A warhead which may be integrated, for example, in a bazooka, is capable of shooting through a wall protecting an enemy. For that purpose, a tandem charge includes a hollow charge which produces in the wall a firing passage for a follow-up charge. The follow-up charge is in the form of a fragmentation projectile which produces fragments behind the wall.

Abstract: A combined projectile is formed of a leading projectile part and a trailing projectile part disposed in coaxial relation and spaced apart by a defined constructional distance. The trailing projectile part can be a weight projectile. Further, the trailing projectile may include a device for retarding detonation relative to the detonation of the leading projectile part. The leading projectile part forms an opening in a target and permits the trailing projectile part to move unimpeded through the opening.

Abstract: A projectile for a surface-to-surface weapon to combat a target from the top. The projectile includes a warhead; a propulsion system for accelerating the projectile directly after the projectile is placed in flight; a stabilizing guide assembly; a sensor for detecting a target in a longitudinal and lateral direction; and a pulse generator for turning the projectile about its center of gravity. The projectile additionally includes electronics for activating the warhead and for controlling the propulsion system and the pulse generator. A control unit rotates independently of the shaped charge warhead and houses the sensor, pulse generator and electronics. The pulse generator is arranged offset with respect to the sensor in the circumferential direction of the control unit.

Abstract: The detonation wave velocity in a solid explosive body of material, incred by the "channel effect", is further increased by compounding of the "channel effect" and/or by partial shock wave interruption by means of a threaded or rifled passage wall surface in a continuous, open channel arrangement. The high velocity detonation wave can be used to increase the jet velocity of shaped charges.

Abstract: A warhead having hollow charge, such as a bomblet as well as a large caliber armor-piercing projectile has an improved detonation wave guide arrangement which preferably produces a high pyrophoric effect at target impact.The detonation wave guide itself is made of an incendiary-active (flamable) material, whereby a strong exothermal reaction is released by shock waves at target impact in the binding substances which form the wave guide. By exclusively initiating this exothermal reaction and incendiary effect by means of shock waves a rapid and simple introduction of the reaction in a few microseconds is achieved. The binding substance consists of metal particles and gases embedded in matrix. These metal particles have a high combustion enthalpy and the matrix is made of an organic polymer.

Abstract: A hollow-charge projectile is provided with a precision charge (12) which, on the one hand, is surrounded on the outside by a metallic jacket (11) and, on the other hand, is lined on the inside with an insert (13). During assembly there exists the danger of formation, due to thermal expansion, of cracks, cavities or fissures between the three components (11, 12, 13). This is avoided by first cooling down the precision charge (12), heating the jacket (11) and introducing the precision charge (12) into the jacket (11), and by subsequently heating the jacketed precision charge (12), cooling the insert (13) and pressing the insert into the precision charge (12). The thus assembled components (11, 12, 13) are brought to room temperature.

Abstract: An open apex shape charge explosive device is disclosed having an inner liner defining a truncated cone, an explosive charge surrounding the truncated inner liner, a primer charge, and a disc located between the inner liner and the primer charge for directing the detonation of the primer charge around the end edge of the disc means to the explosive materials surrounding the inner liner. The disc comprises a material having one or more of: a higher compressive strength, a higher hardness, and/or a higher density than the material comprising the inner liner, thereby enabling the disc to resist deformation until the liner collapses. The disc has a slide surface thereon on which the end edge of the inner liner slides inwardly toward the vertical axis of the device during detonation of the main explosive surrounding the inner liner, to thereby facilitate the inward collapse of the inner liner. In a preferred embodiment, the geometry of the slide surface is adjusted to further control the collapse or .beta.

Abstract: An explosive charge for underwater use comprising a shaped charge behind a ain charge. The shaped charge is detonated, propelling a jet from the liner of the shaped charge through a tube extending through the main charge. When the jet passes through the water, it creates a cavity behind it. The main charge is detonated after a delay sufficient to allow the explosive energy to enter the cavity before the cavity begin to collapse.

Abstract: The present invention relates to a projectile-forming explosive charge (1) of the type which includes a forward concave insert (2) disposed in the envisaged effect direction of the charge and being reformed on detonation of the charge into a cohesive projectile (4). According to the invention, this projectile (4) is given advantageous ballistic configuration with the aid of a specifically designed annular portion (3) which is also utilized for retaining the insert (2) in that sleeve (8) which surrounds the explosive charge (9) on the other sides.

Abstract: Broadly the disclosure relates to a warhead positioner system which includes a warhead construction comprising a cylindrical missile section having a sector-shaped ordnance charge forming one quadrant thereof, means supporting said missile section for rotational movement about the longitudinal axis of the missile, torque motor means for controlling the rotational position, and means conducting electrical signals to said torque motor from an electric seeker head whereby the charge is positioned so as to be directed toward a desired target upon being detonated. Further, the electrical signal conducting means comprise digital-type circuitry responsive to the electric seeker head output for positioning the charge in one of four quadrants and further analog circuitry for positioning the charge in either half of the selected quadrant.

Abstract: An abstract is provided which is capable of clearing encased explosives s as land mines. This apparatus combines a shaped charge jet with a plate penetrator. A depression is formed in a column of a first explosive material. The depression is provided with a metal liner such that detonation of the first explosive material forms a shaped charge jet. The shaped charge jet passes through a hole in a plate penetrator and exits the device without detonating a second explosive material. The shaped charge jet strikes the ground and imparts kinetic energy. As the energy in the shaped charge jet is consumed, the second explosive material detonates and drives the plate penetrator to supersonic velocities. Since shaped charge jet velocity exceeds the detonation velocity of the second explosive material, the shaped charge jet clears a path ahead of the plate penetrator.

Abstract: A fuzing system for use in operating tandem demolition warheads to sequentially activate a propellant on the rear of a follow through charge, detonate a forward shaped charge and detonate the follow through charge after a brief delay. An interface charge is located proximate to blasting caps. A first fuze responsive to the interface charge is configured to ignite the propellant and to arm the first arming assembly. A second fuze responsive to the interface charge is configured to arm the second arming assembly. A first arming assembly containing a first firing pin is located proximate to the follow through charge. A delay fuze is interposed between the first primary charge and the follow through charge. A second arming assembly containing a second firing pin is located proximate to the forward-shaped charge. In the armed state, a primary explosives are interposed between the firing pins and the follow through charge and forward shaped charge.

Abstract: A multiple module EFP warhead comprises a tubular body having a central axis with a plurality of explosively formed penetrator modules arranged tandemly within the body along the axis. Each of the modules includes a curved, dish shaped support disk having a unique forwardly convex curvature. The support disk is focused on the axis at a point behind the module. Each module has a set of circumferentially spaced apertures therethrough, each having a central aperture axis intersecting the central axis. Each aperture supports a separate ductile metal disk therein and an explosive charge behind and against the metal disk. Each of the aperture axes forms an acute angle of inclination with the central axis which is uniquely offset from the axes of the other modules so that each EFP travels along a unique forward path.

Abstract: A shaped charge device having a cylindrical housing, an explosive charge with a cavity at one end, a fuze, booster, a multimaterial vertically layered liner having a hemispherical, semi-hemispherical, arcuate or conical shape with a number of segments of materials, each segment in contact with the explosive charge and the cavity, each segment oriented normal, parallel or oblique to the charge axis. The detonating of the explosive charge causes the liner to form a jet of a plurality of the segments. A method of manufacture is also disclosed wherein the liners made in the vertical manner avoid mixing or interaction between dissimilar materials undergoing the jetting action. Vertically layered liners provide excellent material flow and liner collapse diagnostics.

Abstract: A delay fuse for a warhead (1) including at least two charges (3, 8) for sequential detonation disposed inside a casing (2). The delay fuse comprises a screen (6) movable in a longitudinal axial direction inside the casing (2) and under the effect of the first charge detonating, from a starting position to a destination position in which it acts on control means (12) for firing a second charge. The fuse includes a component of compressible material (13) disposed inside the casing between the screen (6) and the control means (12). The invention is applicable to shells, rockets, or missiles.

Abstract: A projectile-forming explosive charge-insert of intensified penetrating power into a target, wherein a mass or weight component is centrally positioned in the insert, and the weight member possesses at least one shank projecting into the explosive charge. The weight member or mass serves as a stabilizer during the deformation of the insert into a projectile. The deformation procedure is favorably influenced by the weight member; in effect, during the collaboration of the insert in the region of the head, the mass or weight member acts in a damping or attenuating manner. Governing for the attenuating property of the weight member is, accordingly, its length towards the explosive and its attenuating capacity specific to its material.

Abstract: A thermally enhanced warhead utilizes a heated tungsten liner to generate explosively formed high velocity coherent molten slug to defeat armor targets.

Abstract: A warhead including a shell which encloses the explosive charge and a projectile forming liner with the liner being disposed so that its circumferential surface lies against an intermediate ring which, in turn, is fastened to the shell. To avoid undefinable spalling effects in the region of the boundary surfaces between the liner and the shell, which could result in asymmetrical tail formation for the projectile produced by the detonative resharping of the liner, the intermediate ring and the liner have the same acoustic impedance.

Abstract: An article of ammunition including a projectile-forming insert, wherein a supporting member which is constituted from a foam material is interposed between the insert and a structural component. The foam material possesses, at least in the region bordering against the insert, a density of at most 200 kg/m.sup.3.

Abstract: Anti-tank projectile with initial direct firing in overflight.This projectile comprises a device for detection of the instant of arrival in the vicinity of the target, this device acting on a sequencer which commands first the ignition of a first booster, situated at the front of the projectile and causing it to turn in a clockwise direction, its braking, and the curving of its trajectory towards the target, and then the ignition of a second booster, which being placed at the rear of the projectile, stops its turning motion. The impact on the target is then frontal.

Abstract: A hollow charge for piercing armor built up of several layers of differing densities, the metallic lining of which has three-dimensional isotropy and the density of which corresponds at least approximately to the crystal density of the metal, and, upon detonation, produces an incoherent, pulverulent hollow-charge jet. The associated method of manufacturing the metallic lining comprises atomization of the metal; the mixing of the resulting metal powder in a broad particle-size distribution; the filling of the metal powder into a uniform thickness, double-walled, ductile container; hydrogen flushing of the filled-in metal powder, the closure and gas-tight sealing-off of the double-walled container; hot isostatic pressing of the container; and the removal of the sealed-off container from the pressure-molded component.

Abstract: A munition and method for making a borehole in a target and for placement an explosive unit in the borehole. The munition includes an outer body having a chamber, an inner body disposed in the chamber and having a cavity, a piston disposed in the cavity forming a rear space, the outer body having a front shaped charge wall, the chamber having a first explosive and detonator, a penetrator partly disposed in the cavity and extending through a front wall of the inner body, and a second detonator and explosive disposed in a penetrator compartment.

Abstract: A metal liner for a shaped charge device having a ductile metal matrix and a discrete second phase is provided. The allow composition is selected so the second phase is molten when the liner is accelerated following detonation. The molten phase reduces the tensile strength of the matrix so that the liner slug is pulverized on striking a well casing. The slug does not penetrate the hole perforated in the well casing by the liner jet and oil flow into the well bore is not impeded. The liner is formed by directly casting the desired alloy to the desired shape.

Abstract: A lightweight linear shaped charge for explosive cutting and penetration of target, which includes a plastic linear housing in the form of a concave channel with an inverted "V" shaped metallic liner mounted within the concave channel. An explosive charge is shaped and held between the plastic housing and the metallic liner. Upon detonation of the explosive charge an explosive jet of the metallic liner is generated to cut and penetrate the target. Also, the plastic linear housing may be extended downward a short standoff distance of approximately 0.5 to 1 inch for optimum cutting and penetration of the target.

Abstract: An anti-armor warhead assembly includes an open-ended cylindrical warhead se defined by a first section, a second section and a third section. The first section has a constant inside diameter D.sub.1. The second section has a constant inside diameter D.sub.2 and connects the first section and the third section. The third section is defined by an inside diameter D.sub.3. The relationship between the diameters is such that D.sub.1 <D.sub.3 .ltoreq.D.sub.2. A hollow conically shaped charge liner is axially aligned and fitted within the warhead case. Explosive material fills the first section of the warhead case about an outwardly facing surface of the charge liner. A retaining ring fitted on the third section retains the charge liner and the explosive material in the first section. An end cap fitted to the first section has an initiator coupler formed therein for housing a primer charge used to detonate the explosive material.