Abstract: A shaped charge having plane sides surfaces, in which a booster charge is arranged above a main or primary explosive charge, and wherein the booster charge extends from one of the side surfaces to the oppositely located surface. The booster charge is constituted of an explosive whose detonation velocity is higher than that of the explosive material of the main explosive charge. Thus, when the booster charge is detonated from one side surface thereof, then the booster charge has detonated across the entire length which is present between the two side surfaces, prior to the detonation wave within the main explosive charge having traveled across the entire length thereof.

Abstract: An insert for a projectile-forming charge with a non-constant or varying material thickness extending in the centripetal direction thereof. The insert incorporates peripherally mutually offset centripetally extending zones with a material thickness which is constant in the centripetal direction, and which alternates in transition with centripetally extending zones having a non-constant varying material thickness. In the interest of an improved combat effectiveness for large-caliber ammunition, notwithstanding greater target distances, through periodically varying the material thickness of the insert in the peripheral direction, during the folding in of the insert projectile there can be achieved a more stable flight trajectory due to the formation of defined stub wings at the tail end of the projectile.

Abstract: The invention relates to lining material for a hollow explosive charge with increased effectiveness mainly for the perforation of pipes of hydrocarbon-producing wells.The lining material according to the invention consists of alloy with bismuth content and/or metal mixture with bismuth content and/or elementary bismuth.

Abstract: Inserts for hollow charges, especially for armor-piercing projectiles, are formed with a monocrystalline, unitary structure by melting and directional solidification of a body of the insert material, e.g. copper, in which a shaping member has been provided.

Abstract: A forwardly concave insert for a hollow charge of an armor-piercing missile or projectile has an inner peripheral wall with linear generatrices and an outer peripheral wall with at least partly curved generatrices diverging from the inner wall surface to an annular zone of maximum wall thickness at more than half the distance from the point of the cone to its base, the outer generatrices having centers of curvature lying beyond the cone axis on radii which are perpendicular to the inner wall surface at that annular zone. The arcuately curved sections of these outer generatrices merge tangentially into substantially straight-line sections converging at the cone axis into the aforementioned point.

Abstract: Apparatus for the pyrotechnic cutting of a submerged tube.The apparatus, which is introduced into the tube, comprises in a conventional manner a chassis on which is mounted a support for a pyrotechnic charge, a shield in the upper part of the chassis and a compressed air intake for producing an air pocket below the shield. According to the invention, the apparatus also comprises a ballast for facilitating its lowering to a considerable depth and the charge is a detonating cord with a hollow charge extending continuously over the support, the clearance between the charge and the inner wall of the tube being of minimum size and the same throughout.

Abstract: The present invention comprises a high-density perforating gun in which the shaped charges carried thereby are oriented so that the jets emanating therefrom substantially intersect the axis of the gun. The shaped charges may be vertically spaced by a distance less than the diameter of the charges, but sufficient for each charge jet to pass unobstructed by other jets emanating from the charges immediately above and below.

Abstract: A plurality of disks with the outer shape of a circle has another circle ched non-concentrically in the disk. By stacking the proper assortment of disks about a symmetric warhead, the appropriate asymmetry profile can be obtained. Any asymmetry profile can be created through the proper stacking of disks even if the desired profile is non-linear. With an assortment of extra disks the confinement about a warhead can be quickly modified to provide another configuration based on the results of the test made on the previous warhead.

Abstract: A method of reducing the velocity gradient of a shaped charge liner is diosed. A particular construction for the liner is also disclosed which has the same effect. The velocity gradient and jet-tip velocity are both reduced by forming a plurality of relatively small diameter holes in the charge liner before the liner is assembled with the remaining components of an explosive device.

Abstract: A shaped-charge warhead increases the lethality of the liner material by roducing a lethal material into an appropriate region of a jet penetrator so that the lethal material is projected on the shot-line ahead of a normally large slow-moving slug, or rearward portions of the stretching jet penetrator, without hindering the actual penetration process of an outer vehicle armor. The improved shaped-charge liner eliminates the necessity of using naturally pyroforic material or poisonous liquids.

Abstract: This invention relates to the determination of parameters for selecting materials for use as liners in shaped charges to transfer the greatest amount of energy to the explosive jet. Multi-layer liners constructed of metal in shaped charges for oil well perforators or other applications are selected in accordance with the invention to maximize the penetrating effect of the explosive jet by reference to four parameters: (1) Adjusting the explosive charge to liner mass ratio to achieve a balance between the amount of explosive used in a shaped charge and the areal density of the liner material; (2) Adjusting the ductility of each layer of a multi-layer liner to enhance the formation of a longer energy jet; (3) Buffering the intermediate layers of a multi-layer liner by varying the properties of each layer, e.g.

Abstract: A shaped charge and method of breaching reinforced masonary walls is disced. The shaped charge includes an annular liner located centrally between the ends of a cylindrical container filled with explosive. The device is placed in a pilot hole in the wall and is detonated simultaneously at the ends. The charge creates an annular radially expanding jet of explosive gases and fragments directed into the wall providing a man size opening therein.

Abstract: Two sections of explosives are utilized in a shaped charged device to first accelerate liner material to high velocity and secondly to collapse the moving liner on a projectile's longitudinal axis to produce a high velocity jet and slug. The apparatus utilizes the principle of superposition of velocity generated by sequentially activated explosives to attain jet and slug velocities having greater ability to defeat armored targets.

Abstract: This invention is directed to the construction of armor-piercing projecti which combine the enhanced kinetic energy penetration due to metal matrix composite materials with that of a shaped-charge jet to defeat armor not vulnerable to either weapon alone.

Abstract: The detonating bore in the rear wall of a shaped charge case is outwardly convex. A powdered explosive is compacted into the case through the open front opposite the detonating bore, causing the portion which enters the convex end of the bore from within the case to be less compacted and less dense, for increased sensitivity and more reliable detonation.

Abstract: This invention relates to a new Blasting Device especially adapted to drilling oil and gas wells, characterized by a shaped charge of explosives, having a liner of depleted uranium.

Abstract: A hollow charge includes a covering having multiple sloped portions having pical angles which increase from back to front and create a multiple-stage effect or cascade effect.

Abstract: A linear shaped charge has a v-shaped indentation cladded with e.g. lead. The explosive body is formed of discrete explosive elements, such as detonator cords, at least one of which is positioned along the apex of the indentation so that detonation can be initiated in that region.

Abstract: An explosive device is disclosed which comprises a cylindrical casing filled with explosive charge. The charge is covered at one or both of its sides by a fragmentable lining which is fragmented by explosion of the explosive charge and movement of the shock wave in an effective direction. A recess is provided in the explosive charge which contains an inner booster charge surrounded by an outer annular booster charge. The inner and outer booster charges may be separated by a thin wall with openings in the wall communicating with spaced in the recess on sides of the outer booster charge. A damming lining covers a part of the outer booster charge and is spaced from the outer booster charge to form the spaces.

Abstract: Ammunition for combatting armored targets includes a flying body with an act end and a trailing end. A penetrating warhead is located within the flying body spaced from the impact end. Between the impact end and the warhead, a projectile in the form of a plate of inert material is provided. The surface of the plate facing the warhead is covered with an explosive charge. When the flying body impacts against a target, first the plate-shaped projectile forms an opening through the target sufficient for the warhead to pass through the opening to the interior of the target.

Abstract: An unlined Munroe Effect device for breaching structures in urban terrain. he device is constructed as an unlined, linear, shaped explosive charge which directs an explosive jet into the structure. The shaped charge is formed with a honeycombed substrate of metal in which the substrate interstices are filled with and the substrate is covered by an explosive material. The substrate is embedded in the explosive material. The explosive material and substrate, prior to curing of the explosive material, are formed into an unlined, semi-cylindrical shape to create the explosive jet or Munroe Effect. The device is initiated or detonated with a booster charge.

Abstract: Base separation of cast explosives in projectiles is prevented by means of resilient device, such as a spring washer, positioned between the bottom of the fuzewell cavity in the cast explosive and the bottom of the fuzewell liner threadedly secured to the projectile. By tightening the liner, the spring washer is compressed, causing it to apply a force upward on the liner and downward on the cast explosive toward the base of the projectile, thereby allowing the cast explosive to move in response to thermal changes while maintaining it in contact with the projectile base at all times.

Abstract: A shock-wave-reflecting surface and low density matter or gas within the ntal ogive of a shaped charge warhead ahead of the concave liner thereof modifies the speed and consequent distribution of particles in the stretching jet to improve armor penetration capability.

Abstract: The invention pertains to an improved annular shaped charge of a type to be used in the shaped charge carrier of pipe cutting or severing apparatus. The improved annular shaped charge is made up of eight or more shaped charge segments disposed in side to side abutting relation. Each shaped charge segment has a die formed metal band and charge load. The invention also pertains to methods of making said annular shaped charge and the shaped charge segments, which methods are described.

Abstract: Mechanical interference between a cast explosive material and a casing prnts rotation of the cast explosive material during machining thereof and improves symmetry and performance of the shaped-charge warhead. The cast explosive material may be keyed to the casing by flowing portions of the explosive material into a plurality of cavities in the casing before curing. Alternatively, pins may extend inward from the casing into the explosive material which surrounds them when cast and resists relative motion therebetween when cured. Alternatively, the explosive material may be pre-cast into an appropriate shape, cured and pressed into the casing. Protuberances to fit into holes in the casing or indentations to fit over pins extending into the casing may be formed on the pre-cast explosive. Engagement between the protuberances or indentations and the holes or pins respectively is attained when the explosive material is pressed into the casing.

Abstract: Inserts for cutting charges utilized for the shearing or separation of steel plates, cables, bridge girders or the like. The cutting charges are provided with a hollow space in which there are adhered liners or inserts of multi-component structure so as to develope a primary detonating effect in a symmetrical plane. For military purposes the cutting charges have gabled roof-shaped or semicircular inserts, preferably of inert material or metal, such as electrolytic copper.

Abstract: Natural gas deposits vented by oil or gas wells may pressurize a well beyond the capacity of installed apparatus to contain damage in the event of equipment failure, blow-out, or fire with the result that a well may flow out of control. The means and method of this invention provide for emergency action to shear a well casing together with internal piping or tubing and to seal a well if blow-out preventers otherwise provided do not prove effective. The apparatus of this invention may be self-powering.

Abstract: A load-carrying missile adapted for firing from barrel weapons and having a plurality of explosive charges disposed thereon with a plurality of projectile forming coverings distributed over the periphery of the missile and directed substantially perpendicular to the axis of the missile. The missile is provided with a parachute which is connected to the casing of the missile and which causes a directional braked descent of the missile in the target area.

Abstract: A shaped charge warhead comprising a sleeve, which, in order to improve the rate of detonation of the shaped charge is more weakly structured at the region of a hollow space or cavity of the shaped charge, for instance by providing at such location internal threading, reduced wall thickness or using a weaker material, or combinations thereof.

Abstract: An extended shaped charge comprises a tubular body of a one-piece construction with a convexo-concave profile, having thinner portion of its wall on the side of a charge hollow. The profile of the tubular body is formed by conjugate sections of two closed curves having a common symmetry axis and being internally tangent at the point lying on this axis. In a specific case the closed curves are circles.

Abstract: An explosive charge is disclosed having air cavities in the explosive material, so situated within the material as to guide the propagation of the shock wave produced by detonation in a predetermined direction.