Abstract: A high energy rapid expansion bullet for handguns, rifles and the like with greater killing power and protection from excessive gas pressures due to overloading of powder or obstruction in the gun barrel and without over penetration which could endanger bystanders. A standard bullet (e.g., 45 caliber, 9 MM) is provided with a through bore (draft hole) from the tip to the base of the bullet. The inner end of the bore has a conical seat spaced from the central portion of a malleable disc seal surrounded by an annular seat for the rim of the disc.Gases generated by firing of the bullet deform the disc into contact with the conical seat and wedge the base of the bullet outward to seal the gases in the barrel of the gun and pull the rim of the disc inward to aid in separating the disc from the bullet as soon as the bullet leaves the barrel. Excessive gas pressure such as could come from overloading (too much powder), ruptures the disc and vents the gases to the atmosphere.

Abstract: Subcaliber ammunition, especially for utilization with cannon which are mounted on board aircraft, including a subcaliber projectile core and a propulsion mechanism. The propulsion mechanism is constructed as an inherently stable secondary projectile which flies at a readily estimatable trajectory. The propulsion mechanism continues to fly in the manner of a projectile subsequent to the separation thereof from the projectile core.

Abstract: A tubular projectile having a venturi throat configuration is disposed with rifling on the interior wall surfaces providing a highly aerodynamic projectile which can be used in smooth bore barrel artillery.

Abstract: A projectile is accelerated to hypersonic velocity in an initially closed barrel of a diameter considerably larger than the projectile diameter which is filled with a compressed fuel-oxidizer mixture. The projectile comprises a conical nose portion, an intermediate portion formed to generate oblique detonation waves, and a tapering tail portion provided with several radial vanes. The projectile is propelled by an initiator gun at supersonic speed through one of the intitially closed ends in the barrel, were the detonation waves cause detonation and combustion of the fuel-oxidizer mixture. The detonation results in a high pressure increase to the rear of the projectile accelerating it along the barrel and shooting it at the reached hypersonic speed through the other, initially closed end of the barrel into the open.

Abstract: A tubular projectile suitable for use in training ammunition comprises a hollow tube having formed in the rear end of the tubular wall thereof a recess in which is embedded a tracer material.The projectile may be sabot launched.Constructions are described for igniting the tracer material directly or indirectly from the gases produced by burning of the main propellant charge when the projectile is fired from a gun, e.g. the RARDEN Gun of the Applicants.Example of suitable tracter materials and techniques for filling the said recess with them are also described.

Abstract: For dispersing of rioters, an ammunition is used which includes a plurality of pieces of ice, which preferably, have a spherical shape and are fired at rioters by a firing equipment.

Abstract: A spinning tubular projectile (STUP) is subcalibre to reduce both retard and the gyroscopic stability. The total effect is to reduce crosswind sensitivity and to obtain a better ballistic match with an armour piercing fin stabilized, discarding sabot (APFSDS) round. To reduce the range to that desired for a limited range practice round, the STUP is equipped with spin-damping fins on its surface near the projectile center of gravity.

Abstract: The present invention relates to projectiles that are particularly useful in guns having smooth bores, but it is equally useful in guns having either smooth or rifled bores. The present projectiles are cylindrical, tubular composites comprised of low density and high density materials. The present projectiles have a heavier forward portion and a lighter rearward portion. The distance from a point at the rear of the projectile to a plane perpendicular to the axis of the projectile and passing through the center of mass of the projectile is from about 1.0 to about 5.0, and more preferably from about 1.2 to about 1.8, and most preferably from about 1.2 to about 1.6, times the distance from a corresponding point at the front of the projectile to such plane. The present projectiles may also include a guidance system consisting of internal vanes, or fins, positioned within the projectile body. The present projectiles present substantially less head-on surface area when the projectile is in flight.

Abstract: A spinning ramjet vehicle is provided wherein the combustion process is enced. An injector intakes air and discharges it to an internal combustor. The combustor is separated from the vehicle body and allowed to rotate independently of spin imparted to the vehicle. The combustion process is enhanced as the spin rate of the combustor is less than that of the vehicle.

Abstract: The invention is a bullet which comprises a hollow central cavity, an outside plastic jacket, a lead core, an inside metal jacket, a slotted nose, a gas seal, a gas seal reinforcement disc, and a gas seal extension having slotted seal feathers.

Abstract: A push rod for use in launching tubular projectiles employs a pyrophoric sintered mesh cloth machined to mate with the aft end of the tubular projectile within the gun barrel. The mesh cloth is configured to be entirely consumed during the initial portion of the external ballistic cycle and to push the projectile during the internal ballistic cycle. A preselected thickness of cellulose impregnated paper sheet, adhesively bonded to the aft end of the mesh cloth, delays combustion of the push rod until after the projectile and push rod have left the gun barrel.

Abstract: Improved small arms ammunition comprising a conventional primed cartridge case and a hollow projectile in tubular geometric form is provided according to the present invention. In accordance with the teachings of this invention, the hollow projectile in tubular geometric form is characterized by a nose of circular cross-section expanding back to the main body of the projectile. The main body of the projectile includes a rotational band about at least a portion of the periphery thereof and is backed by a pusher disc and obturator to seal off the central core of the projectile so that propulsive force may be imparted thereto. The tubular projectile is lighter than its comparable conventional counterparts, exhibits gyroscopic stability and is capable of being fired at higher muzzle velocities and producing less recoil than that associated with conventional small arms ammunition while at the same time depositing a great amount of kinetic energy upon impacting the target.

Abstract: A smoke grenade comprising a launching device (1), an instantaneous smoke device (2) and an IR-smoke generator (3) is provided with a casing (4) which can be deformed to guiding/supporting fins (4').

Abstract: The present invention provides a projectile for a shotgun having an elongated cylindrical body with an axial throughbore. A helix is contained within the throughbore which, in conjunction with external fins circumferentially spaced around the exterior of the body, impart spin to the projectile when it is fired.

Abstract: An elongated tubular projectile is provided comprising a tubular side wall structure having inner and outer surfaces and an annular chamber formed between the inner and outer surfaces for receiving explosive material. The annular chamber can be provided with an internal peripheral surface adjacent to the outer surface of the tubular side wall and a grid of intersecting grooves formed in the internal peripheral surface to facilitate the production of a uniform distribution of fragments. Additionally, the projectile can be provided with a central portion and a nose portion having inner and outer walls adjoining the central portion. The inner wall of the nose portion can comprise a liner which, upon ignition of the explosive material, collapses upon itself and is propelled forward to define a self-forging armor piercing fragment.

Abstract: An open-ended diffusion chamber and an adjacent combustion chamber located in the nose of a projectile to receive ram air that ignites a solid fuel material within the combustion chamber. A pair of oppositely disposed lateral steering ports are provided aft of the combustion chamber and are interconnected therewith via a diverting valve that is controllable to selectively divert the escaping combustion gases from the combustion chamber to one or both of the steering ports to thereby change or maintain the trajectory course of the projectile after firing.

Abstract: A projectile comprises a tubular body and a sabot or impact base connected to the rear portion. The tubular body is connected to the sabot by radially extending pins, and the rear face of the body is spaced from a circular shoulder of the sabot by a distance equal to, or larger than, the diameter of the pins. To ensure a transfer of the spin of the sabot to the body, the rear face of the body is provided with a corrugation, such as teeth, or a knurling, which, at the discharge and after the pins are sheared off, digs into the surface of the circular shoulder.

Abstract: A projectile is adapted to be launched from a barrel. The projectile incls a tubular housing and a structural member. The tubular housing has a forward inlet throat and aft nozzle. An annular layer of solid fuel combustible material is mounted within the housing between the inlet throat and nozzle. The structural member is detachably mounted over the nozzle. The structural member is sized to cover the nozzle so that pressurized gas applied to the structural member forwardly thrusts the housing. Thus, the projectile is gun-launchable and can produce a ramjet action.

Abstract: A fuzeless annular wing projectile composed of a tubular projectile body having essentially smooth interior and exterior cylindrical faces extending in the longitudinal direction of the body, and a guide band mounted on the body with the body being formed and/or treated to exhibit desired break locations in the region of at least one face and at least at a location between the front end of the body and the location of the guide band.

Abstract: Ammunition having increased projectile velocity and energy without increasing the chamber pressure within a firearm such as a handgun, rifle, anti-aircraft gun, canon, etc. This is accomplished by simultaneously incorporating at least two of three interdependent modifications. The concept consists of using a specific gunpowder pseudo overcharge by adding more and/or faster burning explosive, in conjunction with a projectile having an internally jacketed axial bore. The jacketed bore must possess sufficient area to prevent the pseudo overcharge pressure from exceeding the predetermined pressure specification. The net result is a pressure and confident modification of the gunpowder burning parameters which produce much higher average propulsion pressure for any given peak pressure.

Abstract: A tubular projectile having a rear end with a sabot and an open front end is characterized in that it comprises an interior and an exterior cylindrical wall, concentrically arranged, between which at least one incendiary charge is provided in front of at least one explosive charge, as seen in the moving direction of said projectile, and that said forward combustion charges are covered by a cover in front.

Abstract: Firing of a tubular-shaped projectile body containing a sharp-edged annular end surface previously created difficulties, because firing the end surface of the tubular-shaped projectile body was damaged by the sabot base portion by virtue of the large acceleration forces. This difficulty is avoided in that the invention contemplates incorporating an at least bipartite ring-shaped wedge member between a cone-shaped portion of the sabot base portion and a cone-shaped rear wall of the tubular-shaped projectile body.

Abstract: A duplex projectile to be fired from a gun bore is made up of a tubular pectile and a conical shaped projectile fastened within the tubular projectile by means which are capable of withstanding acceleration forces on the round while the round is within the bore after being fired but which release the conical projectile from the tubular projectile once the two exit from the bore.

Abstract: An improved tubular projectile formed from a single piece body member hav a ball valve resiliently held in a closed position therein and a method of manufacture is disclosed.

Abstract: An out-of-line fuse for primarily ring-type, multiple point concurrent initiation, projectiles is disclosed. In the unarmed state, the detonator and booster charges are angularly displaced while located at the same radial distance from the projectile axis in adjacent radial planes. When rotation of the projectile is sensed by a plurality of centrifugally actuated fiber optic light switches arranged in a series optical relationship, an electrically activated pyrotechnic thruster is fired to move the detonator charges and the booster charges into alignment arming the projectile; the electrical circuit having been priorly energized by inertia switches sensing the thrust forces during the launching of the projectile. When rotation of the projectile substantially ceases the detonator charges are electrically fired.

Abstract: A hollow tubular projectile is disclosed having about 30 percent less mass han conventional ammunition projectiles and considerably less drag, as a result of precise aerodynamic design details.

Abstract: A projectile capable of detecting toxic agents in the atmosphere at long ge, particularly halogen containing materials, containing therein a pyrotechnic composition comprising magnesium, calcium resinate and strontium nitrate. The projectile has an orifice therethrough along its longitudinal axis to enable the projectile to sample the atmosphere as it travels therethrough.