Abstract: A containment bag has two sections. A forward section with one end secured positively in the sabot-obturator interface region during the assembly of the sabot, obturator, projectile and casing adapter. The other end of the forward section has a circumferential securing band, for example a band of loops of the type marketed under the trademark Velcro. An aft bag section is secured to the cartridge casing at one end in a conventional manner and the other end has a circumferential securing band; Velcro hooks for example. The bands join the two sections of the bag together when the cartridge casing is brought into position to be bonded to the cartridge adapter.

Abstract: A gun propellant comprises ammonium azide in finely divided form and at least one conventional propellant and/or explosive composition. The ammonium azide is free of any heavy metals capable of reacting with the ammonium azide to form metallic azides. The ammonium azide may be in pulverulent form or may be fabricated into a grain having a specific geometry. The ammonium azide may also be employed as a pyrotechnic formulation in a variety of environments.

Abstract: An igniter bag for a cannon cartridge is disclosed which comprises a generally toroidal annular bag of combustible fabric such as cotton or rayon containing an ignition powder. The bag has a plurality of radial seams separating the bag and the powder contained therein into separate adjacent compartments within the bag so that movement of the powder within the bag is substantially restricted. This construction prevents side to side shifting of the ignition powder during storage, handling and loading of the cartridge.

Abstract: An ordnance or munition casing is described which comprises a hollow outer casing having a shock attenuating inner liner made from successive layers of material of inwardly decreasing acoustic impedance. The inner liner reduces the sensitivity of the munition to sympathetic detonation and cookoff. Also described is an attenuation barrier made from a layer or layers of less detonation sensitive explosive material. The layers of less detonation sensitive material are preferably arranged in successive layers of outwardly decreasing detonation sensitivity. The same layers may combine sequenced acoustic impedance and detonation sensitivity. The layers may be made of material compounded with flaked or granular materials to provide preselected acoustic impedances. A coating for desensitizing the outer surface layer of a main explosive charge is also disclosed.

Abstract: The invention relates to a propellant charge container for receiving loose propellant charge powders. The propellant charge container consists of at least two separate telescopically mounted cylindrical parts which are mutually rotatable relative to each in the peripheral direction. The propellant charge container has a substantially cylindrical shape. The cylindrical container parts forming the container are coupled to each via their mutually overlapping regions. Each of the respective overlapping regions of the parts forming the container have at least one opening, which openings can be mutually aligned to form a filling opening. When these openings are misaligned the filling opening is closed. The overlapping regions of the cylindrical parts have one or more annular corrugations which interengage to form a firm coupling between the cylindrical parts forming the propellant charge container.

Abstract: A modified propellant increment for the propulsion system of an ammunition round includes a body composed of combustible propellant material and having a hollow interior, and a plurality of holes defined through the body which communicate the exterior of the body with the hollow interior thereof. The hollow interior of the body is empty of any propellant other than the propellant material composing the body. The holes are arranged in first and second arcuate rows on opposite planar end portions of the body and ensure complete combustion of the body upon burning thereof.

Abstract: An improved plastic film cartridge for flowable explosives is provided. The cartridge comprises a recessed or indented end configuration which recess can be enlarged to provide a locating and retaining pocket for a blasting cap without any penetration of the cartridge film wall. The recess is maintained by means of an internal, elastic cord or strip attached between the sealed ends of the cartridge.

Abstract: A propellant-charge pack has an annular envelope having an outer wall extending along and centered on an axis, a pair of axially spaced end walls extending transversely inward from the axis and having inner peripheries centered on the axis, and an inner wall defining a clear axially throughgoing passage between the inner peripheries of the end walls. The envelope is generally axially symmetrical about the axis, that is it is formed as a body of revolution or of regular polygonal section, and is substantially symmetrical to a plane perpendicular to the axis midway between the end walls. A relatively easily ignited primar charge forms a part of the inner wall symmetrical of the plane and a propellant charge fills the envelope between the walls outward of the inner wall. The primar charge is of such high combustibility, compared to the diameter of the passage, that the entire primar charge, even of a stack of such packs, will be ignited before they burn through and set off the respective propellant charges.

Abstract: A housing for the protection of explosive charges comprises several layers of different compositions surrounding the explosive charge. The successive layers have alternately a high and a low shock wave impedance, where further the outermost layer has the lowest melting point and the melting point increases toward the innermost layer.

Abstract: The present invention relates to packaged explosives and methods of manufacture thereof and more particularly to packaged emulsion explosives. The term "emulsion" as hereafter used shall mean an oil-continuous emulsion having a continuous organic fuel phase and a discontinuous oxidizer solution phase dispersed as fine droplets throughout the fuel phase. The term "explosive" shall mean a detonable composition which can be either cap-sensitive or noncap-sensitive, as desired. The term "packaged" shall refer to cylindrical tubes or sticks of emulsion explosive of any desired length and having a diameter of generally four (4) inches or less, although larger diameter products also can be made by the methods described herein.

Abstract: The invention relates to a combustible propellant charge casing particularly useful for cartridge ammunition.In order to simplify the manufacture of ammunition and to improve its storage capacity, a propellant charge casing made from a synthetic foil is provided. The invention achieves particularly advantageous mechanical strength and stability in the propellant charge structure when the casing is formed from a shrinking foil.

Abstract: A propellant-charge pack has an annular envelope having an outer wall extending along and centered on an axis, a pair of axially spaced end walls extending transversely inward from the axis and having inner peripheries centered on the axis, and an inner wall defining a clear axially throughgoing passage between the inner peripheries of the end walls. The envelope is generally axially symmetrical about the axis, that is it is formed as a body of revolution or of regular polygonal section, and is substantially symmetrical to a plane perpendicular to the axis midway between the end walls. A relatively easily ignited primer charge forms a part of the inner wall symmetrical of the plane and a propellant charge fills the envelope between the walls outward of the inner wall. The primer charge is of such high combustibility, compared to the diameter of the passage, that the entire primer charge, even of a stack of such packs, will be ignited before they burn through and set off the respective propellant charges.

Abstract: A textile fabric employs a corrugated synthetic flat yarn having a plurality of filaments arranged in side-by-side relationship and being integral with adjacent filaments. The tape is corrugated tape woven or knitted with other yarns in a flat, substantially untwisted attitude. The tape is fabricated without fibrillation but controlled splitting may occur during subsequent fabric sewing or stitching operations. The fabric is particularly suited for use as geotextiles, woven intermediate bulk containers, woven explosive bags, and strapping (webbing).

Abstract: A container adapted for insertion into a device is disclosed wherein the container has fitted into its hollow interior the components required to form therein and eject therefrom a chemiluminescent light emitting material.

Abstract: An industrial cartridge has a case that contains a propellant charge of at least two successively arranged propellant charge powders deflagrating at differing speeds. The powders are separated from each other by a gas-permeable cover extending transversely to the case axis. The case of the cartridge contains a compressible seal at the opposite end to the base end of the case. An ignition-transmitting tube is axially arranged in the case. The tube includes, at the level of the second and/or last propellant charge powder as seen from the base, a cover which is thinner than the wall of the ignition-transmitting tube.

Abstract: An impact resistant bag structure is made of a continuously woven fabric wherein the circumferential yarns and longitudinal yarns have a toughness ratio of between about 4.0/1.0 and 1.67/1.0. The bag structure is particularly useful in explosive bag applications.

Abstract: A metal case to non-metal bonding system that has a long shelf life and will withstand high temperature and pressure operating conditions and that satisfies requirements relating to material compatibility, surface preparation, strength, aging, ease of application and stability over a broad range of temperatures comprises a cylindrical metal case and a non-metallic insulation attached to the interior surface of the case wherein the case interior surface is sand blasted and cleaned, a corrosive resistant coating is applied and cured, a metal to rubber adhesive coating is brush applied and cured, uncured insulation material is laid up against the interior surface of the cured adhesive, several layers of insulation material are used wherein a vacuum bag is used between layers to attach adjacent layers, the uncured insulation, adhesive and metal liner are cured and vulcanized bonded, and the interior surface is machined to final dimensions to receive a solid propellant grain assembly.