Abstract: A projectile for use in a firearm ammunition cartridge, and a method of forming the projectile the projectile including a core, a jacket in which the core is disposed, the jacket having a closed rearward end and an open forward end, the forward end tapering inwardly toward a longitudinal centerline of the jacket to define an ogive portion of the projectile, and extending past a forward end of the core to form an open space inside the jacket between the forward end of the core and the forward end of the jacket, and a plurality of ventilation ports formed proximate the forward end of the jacket, each of the ventilation ports having a first opening on an inner surface of the jacket defining the open space, and a second opening on an outer surface of the jacket.

Abstract: Metallic solid projectile for practice cartridges, in particular for use on preferably police shooting ranges, wherein the solid projectile comprises a front-side ogival portion and a cylinder portion for holding the solid projectile in a cartridge case and defines a projectile length in the axial direction, wherein the ogival portion has an ogival wall and a rotationally symmetrical ogival cavity circumferentially bounded by the ogival wall, wherein it is provided that a fully cylindrical stem portion of the solid projectile extends in the axial direction over less than 45% of the projectile length.

Abstract: A system, apparatus and method for a superduct representing a unique process for helium distillation/liquefaction by means of a hypersonic stochastic switch is described. A supersonically expanded isentropic continuum is switched into a stochastic vortex flux by means of a thermally reactive slanted shafted nosecone and an extreme high pressure source hypersonic vortex flux. The concept can be further developed to a bridge spanning 1-10 miles of superduct segments, owing to its virtual nature and extreme power packaged kinetic energy of the hypersonic stochastic motive system.

Abstract: A projectile which can be used to defeat an unmanned aerial system. The projectile features sabots which do not impart any forward impedance to the sub-projectiles, and carries a payload of stacked rings enclosed in the projectile. The rings are backed by a support ring, and abut a pusher aft section. The projectile's sabots discard cleanly upon muzzle exit, releasing the ring sub-projectiles to cover a large area, thereby increasing the probability of impacting the target. The rings create large holes in the target, despite comparatively low mass of a given ring as a defeat element, allowing for multiple sub-projectiles to be fired with a single shot, thereby creating the effect of firing multiple projectiles with a single shot.

Abstract: A hollow tube projectile and launch cup system comprises a cylindrical hollow tube with an inwardly chamfered leading end and a plurality of elongate vents spaced evenly around a cylindrical wall. The elongate vents are configured to have a semicircular leading edge and an elliptical trailing edge. The trailing edge is configured to extend at an acute angle from an inner perimeter of the cylindrical wall to an outer perimeter thereof. The disclosed launch cup comprises an outwardly chamfered leading end and a plurality of elongate exterior ribs spaced evenly around an otherwise cylindrical wall. The ribs are configured to extend longitudinally from the leading end toward the trailing end and blend into an anterior skirt on the trailing end. The trailing end is configured in a receptacle aft for explosive propulsion and the leading end is configured in a receptacle fore to receive the hollow tube projectile therein.

Abstract: Ammunition which includes a bullet having an effective caliber that is larger than its nominal caliber, comprised of a bullet body with a longitudinal cavity in the forward end, and one or more bores extending from the cavity to bore openings on the exterior of the bullet. In use, target media is gathered in the cavity and ejected under force through the bore openings, increasing the damage done by the bullet. Preferably, the bullet cavity and bores are filled with a polymeric or elastomeric material.

Abstract: A projectile comprised of an ogive section, a bearing surface section and a boattail section. A cavity is formed inside the projectile from an aperture on the aft end of the boattail section and forward to about the transition point (shoulder) between the ogive section and bearing surface section. The cavity is centered about the centerline of the projectile and open on the aft end of the projectile.

Abstract: In one embodiment, a less lethal munition including a ring airfoil projectile. The flight trajectory of the projectile has increased accuracy resulting from the aerodynamic stabilization of the projectile. In some embodiments, the projectile is both aerodynamically stabilized and spin stabilized.

Abstract: In one embodiment, a less lethal munition including a ring airfoil projectile. The flight trajectory of the projectile has increased accuracy resulting from the aerodynamic stabilization of the projectile. In some embodiments, the projectile is both aerodynamically stabilized and spin stabilized.

Abstract: Apparatus and methods for launching and fabricating projectiles. In some embodiments, one or more ring airfoil projectiles are launched from a gun. Yet other embodiments pertain to the launching of projectiles that disperse tracer or irritant chemicals upon impact. Yet other embodiments pertain to apparatus and methods for molding of munition components.

Abstract: My Ring Airfoil Glider Expendable Cartridge and Glider Launching Method is form launching a reduced caliber ring airfoil glider from a conventional grenade launcher barrel with preferred application for less lethal use. A caseless ammunition base contains a primer communicating with a propellant in a rupture disk sealed chamber with a vent used to create, seal and channel propelling gas into a space behind a sabot mounted on a central guide on the base, whereupon releasing the gas, the sabot aligns, seals, pushes and rotates the glider in passage down the barrel, to a point of maximum velocity, whereon, the propelling gas is vented ahead of the glider by the central passage in the sabot as it leaves the guide, whereupon, the bore decelerates the sabot by friction freeing the glider to fly down the bore centered by a turbulent boundary layer of air until it exits the muzzle.

Abstract: Apparatus and methods for launching and fabricating projectiles. In some embodiments, one or more ring airfoil projectiles are launched from a gun. Yet other embodiments pertain to the launching of projectiles that disperse tracer or irritant chemicals upon impact. Yet other embodiments pertain to apparatus and methods for molding of munition components.

Abstract: My Ring Airfoil Glider Expendable Cartridge and Glider Launching Method is form launching a reduced caliber ring airfoil glider from a conventional grenade launcher barrel with preferred application for less lethal use. A caseless ammunition base contains a primer communicating with a propellant in a rupture disk sealed chamber with a vent used to create, seal and channel propelling gas into a space behind a sabot mounted on a central guide on the base, whereupon releasing the gas, the sabot aligns, seals, pushes and rotates the glider in passage down the barrel, to a point of maximum velocity, whereon, the propelling gas is vented ahead of the glider by the central passage in the sabot as it leaves the guide, whereupon, the bore decelerates the sabot by friction freeing the glider to fly down the bore centered by a turbulent boundary layer of air until it exits the muzzle.

Abstract: In one embodiment, a less lethal munition including a ring airfoil projectile. The flight trajectory of the projectile has increased accuracy resulting from the aerodynamic stabilization of the projectile. In some embodiments, the projectile is both aerodynamically stabilized and spin stabilized.

Abstract: My Ring Airfoil Glider Expendable Cartridge and Glider Launching Method is form launching a reduced caliber ring airfoil glider from a conventional grenade launcher barrel with preferred application for less lethal use. A caseless ammunition base contains a primer communicating with a propellant in a rupture disk sealed chamber with a vent used to create, seal and channel propelling gas into a space behind a sabot mounted on a central guide on the base, whereupon releasing the gas, the sabot aligns, seals, pushes and rotates the glider in passage down the barrel, to a point of maximum velocity, whereon, the propelling gas is vented ahead of the glider by the central passage in the sabot as it leaves the guide, whereupon, the bore decelerates the sabot by friction freeing the glider to fly down the bore centered by a turbulent boundary layer of air until it exits the muzzle.

Abstract: A projectileless ammunition system (20; 320) includes a metallic case (22; 322). A propellant charge (26; 326) is carried by the case and covered by an over-powder member (24; 324) in the absence of a separate projectile. The ammunition is advantageously used with an industrial ballistic tool operating so that each spent case serves as the effective projectile to be propelled by firing of the next round of ammunition.

Abstract: A projectile (10) comprises a cylindrical body (12) with a first (leading) end (14) and a second trailing axially opposed end (16). An internal cavity (18) is formed between the ends (14 and 16) and holds a volume of propellant material (22). The first end (14) is closed by a nose (20) that is fixed to the body (12). The end (14) is sealed with a base seal (26) that seats a primer (24) for igniting the propellant (22). The primer (24) is located inboard of the second end (16) and the base seal (26) to reduce the likelihood of accidental activation. Seals (30) are formed about the body (12) for maintaining gas pressure of deflagrating propellant. The seals (30) may be formed integrally with the body (12) or separately from the body (12) and seated in respective grooves (40) formed circumferentially about the body (12).

Abstract: The boresight laser aiming system for firearms provides a laser aiming beam through the mechanical action (20), chamber, and barrel (36) of the operable firearm (10) and through a specially configured live rimfire cartridge within the chamber, enabling a marksman to place the laser upon the target and fire the weapon simultaneously. The laser device (12) may be installed concentrically with a light passage through the bolt (22), hammer, or other mechanism of the firearm, or may be offset with the light path guided by one or more reflective mirrors, prisms, etc. The firearm may comprise a rifle (10), semiautomatic pistol, revolver, etc. The live cartridge has concentric inner and outer tubes defining a toroidal explosive charge-containing chamber therebetween and a light passage through the innermost tube, and a bullet having a passage therethrough allowing light to pass through the live cartridge assembly when placed in the firearm chamber.

Abstract: The boresight laser aiming system for firearms provides a laser aiming beam through the mechanical action (20), chamber, and barrel (36) of the operable firearm (10) and through a specially configured live rimfire cartridge within the chamber, enabling a marksman to place the laser upon the target and fire the weapon simultaneously. The laser device (12) may be installed concentrically with a light passage through the bolt (22), hammer, or other mechanism of the firearm, or may be offset with the light path guided by one or more reflective mirrors, prisms, etc. The firearm may comprise a rifle (10), semiautomatic pistol, revolver, etc. The live cartridge has concentric inner and outer tubes defining a toroidal explosive charge-containing chamber therebetween and a light passage through the innermost tube, and a bullet having a passage therethrough allowing light to pass through the live cartridge assembly when placed in the firearm chamber.

Abstract: A ring airfoil projectile is defined by an annular body which defines a central passage. The body is constructed so that a center of pressure is substantially coincident with a center of gravity thereof. The body is preferably constructed of a nose section and tail section, the nose section of a material having a higher density than the material forming the tail section. The ring airfoil projectile is configured to deliver a payload to a target. Cavities extend inwardly from the outer surface of the airfoil, preferably in the nose section. The cavities accept payload or a strip containing payload. The ring airfoil projectile is configured to travel with minimum path dispersion, and to deliver the payload upon impacting a target.

Abstract: The present disclosure relates to a less-lethal projectile device generally comprising a projectile, such as a rubber-encapsulated metal block, that is mated to a docking base by way of a mounting tube. The projectile may be milled with a cavity located in its rearward section for enabling the projectile to fit onto the mounting tube portion of the docking base through compression. The projectile captures a fired bullet and is propelled along the original path of the bullet. The disclosed system results in a normally lethal weapon being converted into a less-lethal blunt impact system.

Abstract: A ring airfoil style paintball comprises a ring airfoil carrying a visible marking agent. The marking agent is located in one more compartments in a nose portion of a body of the ring airfoil, or within one or more containers located in those compartments. The nose portion of the body of the airfoil is configured to rupture upon impacting a target, releasing the marking agent into contact with the target. Cartridges comprising a sabot containing the ring airfoil style paintball are launched from a launcher. The launcher includes a magazine for sequentially delivering cartridges for launch. A stripper associated with the launcher strips the sabot from the ring airfoil paintball, and an ejector ejects the stripped sabot from the launcher.

Abstract: The invention is a multi-shot launcher adapted to launch ring airfoil projectiles. Each ring airfoil projectile is coupled to a sabot, the ring airfoil projectile and sabot mounted to a housing in a cartridge form. The cartridge has a length which is less than its diameter. The launcher includes a receiver defining a cartridge receiving area and a tubular passage through which the ring airfoil is launched from a fired cartridge. The launcher includes a trigger mechanism for firing a cartridge. The launcher includes an ejector for ejecting the housing of a spent cartridge from the receiving area and a loader for loading a new cartridge into the receiving area. The cartridge may be loaded from a magazine connected to the receiver.

Abstract: A projectile reconfigures in flight from a launch configuration, in which the center of gravity is aft of the center of pressure, to a flight configuration, in which the center of gravity is forward of the center of pressure. The projectile includes a forward portion and an aft portion, and the reconfiguration involves movement of at least part of one of the portions relative to the other portion. The projectile may have an overall substantially conical shape when in the launch configuration. The forward portion may include a substantially conical nose, and a cylindrical central body attached to the nose. In the launch configuration, at least part of the central body may be located within a hollow in a base of the aft portion. The base may be slidable relative to the central body.

Abstract: A firearm projectile assembly apparatus disclosed herein comprises: a bullet; a hollow core running completely through the bullet from a front of the bullet subassembly to a rear of the bullet; a core material within at least part of the hollow core; and an expansion-inducing tip integral with the core material, and protruding forward of the front of the bullet; wherein: when the projectile assembly impacts with a target, the expansion-inducing tip drives the core material rearward relative to the hollow core, forcing the bullet to expand radially outwardly. Also disclosed for firearm projectile assembly apparatus is a pressure shield; and a non-discarding attachment of the pressure shield to the bullet, such that after the projectile assembly is fired from a firearm, the pressure shield does not discard from the bullet during the bullet's flight to a target. Also disclosed is a pressure shield comprising: a gas check; and various controlled air spaces.

Abstract: The invention relates to a bullet for infantry ammunition comprising a bullet core (1), a bullet tip (13), and a metal case (2). The aim of the invention is to create a durable connection between the bullet core (1) and the metal case (2). To this end, the metal case (2) is a shell, which is open at the front and which is pulled onto the bullet core (1) from the rear. The bullet tip (13) projects away from the metal case (2), and a constriction (4) is provided on the bullet core (1). The case end (5) that is open at the front projects into this constriction.

Abstract: A projectileless ammunition system (20; 320) includes a metallic case (22; 322). A propellant charge (26; 326) is carried by the case and covered by an over-powder member (24; 324) in the absence of a separate projectile. The ammunition is advantageously used with an industrial ballistic tool operating so that each spent case serves as the effective projectile to be propelled by firing of the next round of ammunition.

Abstract: A projectileless ammunition system (20; 320) includes a metallic case (22; 322). A propellant charge (26; 326) is carried by the case and covered by an over-powder member (24; 324) in the absence of a separate projectile. The ammunition is advantageously used with an industrial ballistic tool operating so that each spent case serves as the effective projectile to be propelled by firing of the next round of ammunition.

Abstract: A projectileless ammunition system (20; 320) includes a metallic case (22; 322). A propellant charge (26; 326) is carried by the case and covered by an over-powder member (24; 324) in the absence of a separate projectile. The ammunition is advantageously used with an industrial ballistic tool operating so that each spent case serves as the effective projectile to be propelled by firing of the next round of ammunition.

Abstract: A length of a rod of an axial kinetic energy projectile is increased as the projectile flies to the target. The projectile includes a nose, a rear, and a base rod. The base rod has a forward member, a rearward member, and a connection between the forward member and the rearward member which allows the forward member to move axially relative to the rearward member from a contracted position where the rod has a reduced length to an extended position where the rod has an increased length greater than the contracted length. Further, the base rod includes a locking mechanism which axially locks the forward member and the rearward member together when the forward member is moved from the contracted position to the extended position.

Abstract: Manufacturing processes for articles that are formed from compositions of matter that include powders containing tungsten and at least one binder, as well as articles formed thereby. In some embodiments, the processes include compacting the mixture of powders under a first pressure to yield a desired intermediate structure, then reshaping the structure under a second pressure that is lower than the first pressure to yield the desired article. The compacting steps may include punches and/or dies having different configurations and/or materials of construction. The composition of matter preferably is selected to reflow, or be reshaped, without fragmenting or otherwise disintegrating into discrete particles or particulate. In some embodiments, the compacted intermediate structure and/or final article has an extrusion constant of less than 30,000 psi. In some embodiments, the mixture of powders has an ASTM Hall flowmeter reading for fifty grams through a cone (without tapping) of less than 18 seconds.

Abstract: A projectileless ammunition system (20; 320) includes a metallic case (22; 322). A propellant charge (26; 326) is carried by the case and cover by an over-powder member (24; 324) in the absence of a separate projectile. The ammunition is advantageously used with an industrial ballistic tool operating so that each spent case serves as the effective projectile to be propelled by firing of the next round of ammunition.

Abstract: A self-contained round of ammunition has a cartridge casing including a tubular body defining a cylindrical rifled bore and a base threadably attached to the casing body and forming a closure for a breech end of the rifled bore. A sabot which carries a ring airfoil projectile is constrained for limited axial movement within and relative to the bore from a loaded position adjacent the base to a fired position wherein an annular arresting lip integrally formed at the muzzle end of the cartridge body engages an annular abutment surface on the sabot. The lip defines a cylindrical muzzle opening having a diameter smaller than the diameter of the bore and larger than the major diameter of the projectile which may pass freely there through. The sabot in its loaded position cooperates with the base to form a pressure chamber therebetween for receiving gasses of explosion generated by a powder charge contained within the base and in communication with a primer mounted in the base.

Abstract: A self-contained round of ammunition has a cartridge casing including a tubular body defining a cylindrical rifled bore and a base threadably attached to the casing body and forming a closure for a breech end of the rifled bore. A sabot which carries a ring airfoil projectile is constrained for limited axial movement within and relative to the bore from a loaded position adjacent the base to a fired position wherein an annular arresting lip integrally formed at the muzzle end of the cartridge body engages an annular abutment surface on the sabot. The lip defines a cylindrical muzzle opening having a diameter smaller than the diameter of the bore and larger than the major diameter of the projectile which may pass freely there through. The sabot in its loaded position cooperates with the base to form a pressure chamber therebetween for receiving gasses of explosion generated by a powder charge contained within the base and in communication with a primer mounted in the base.

Abstract: A method of packaging a multiplicity of infrared decoy foils into a canister having an aft end and a drive screw extending therein. The present method allows for the controlled dispensing and dispersal of the decoy foils from within the canister and comprises the initial step of assembling the decoy foils into at least one stack. The stack is advanced into the canister, with a preload being applied to at least a portion of the stack through the use of at least one separator plate cooperatively engaged to the drive screw. The preload applied to the decoy foils is of a force greater than or equal to that required to dispense the decoy foils from the canister.

Abstract: A rotating tubular projectile for increasing the stability of the projectile and the accuracy of the firearm. The rotating tubular projectile includes a cylindrical body having an open first end. The cylindrical body has an axial passageway that extends through the open first end. Additionally, a spiraled airfoil is mounted in the axial passageway of the cylindrical body for impinging a flow of air flowing through the axial passageway. In one embodiment of the present invention the spiraled airfoil rotates the cylindrical body with respect to a longitudinal axis of the cylindrical body as it travels through the barrel and away from the firearm.

Abstract: A projectile for missile intercepting machine guns or the like having a hollow projectile body which includes a front end part having an inside thereof shaved taperingly to make a wall thickness becoming smaller and smaller toward a front end, thereby forming a thin wall part. An outer edge of the front end of the thin wall part is cut to form an acute angle part. The acute angle part of the projectile body is adapted to bite and stick into a flying object or the like to surely shoot down the latter.

Abstract: A projectile for firing from an ammunition shell. The projectile includes an elongated hollow body of a resilient material, the hollow body further having a trailing end, a mid-portion, and a leading end, the leading end being closed and the trailing end having an aperture providing access to the interior surface. A propellant is included near the leading end of the hollow body and against the interior surface of the elongated hollow body, so that the interior surface of the hollow body between the trailing end of the hollow body and the mid-portion of the hollow body defines a hollow space. The projectile is adapted for placement within the ammunition shell to allow firing of the projectile from a shotgun or the like.

Abstract: An aerial decoy comprising a fuselage having forward and aft ends. Disposed within the fuselage are a plurality of decoy discs. Rotatably connected to the forward end of the fuselage is a ram air turbine which is cooperatively engaged to the decoy discs such that the rotation of the ram air turbine facilitates the dispensation of the decoy discs from the aft end of the fuselage.

Abstract: A propellant system is disclosed which includes a propellant applied to at least one surface of a substrate which is in the form of a strip. The propellant strip is adhesively attached to itself in a configuration which conceals propellant within the configuration and which allows the attached strip to peel away from itself under applied forces thereby resulting in smooth and continuous exposure of propellant for burning. The system is directed to use with ejectable projectiles which are slidably disposed within a canister or casing. The propellant system is interconnected between the projectile and the cannister which houses the projectile. The propellant is urged to peel, and thus expose propellant for burning, as the projectile is ejected from the canister. Alternatively, the propellant is telescoped and covered with a sleeve which peels away as the projectile is ejected.

Abstract: A solid fuel ramjet tubular projectile has a generally tubular body fabried of dense material or suitable hardened material having a bore formed therethrough and having first and second ends. A plurality of partitions divide the bore into a plurality of separate combustion chambers. Each of the combustion chambers extends longitudinally substantially the length of the body. Solid fuel is formed upon the body within each of the combustion cheers. An inlet is formed at the first end of the body, into which air is received. The inlet is configured so as to substantially decelerate air entering the inlet at supersonic velocity to subsonic velocity prior to the air entering the combustion cheers. An outlet, through which combustion gases flow, is formed at the second end of the body. A mixing section is preferably formed intermediate the combustion chamber and the outlet so as to facilitate substantial mixing of the combustion gases from each combustion chamber prior to the combustion gases entering the outlet.

Abstract: An improved tubular projectile is described wherein an effective balance has been obtained between the design parameters of reduced mass/reduced aerodynamic drag, flight characteristics, and high energy transfer upon impact. An elongate tubular projectile is provided with an axial passageway, with a central section of generally uniform diameter and flared ends. Slots are cut into the leading end to assist with expansion upon impact. The tubular projectile can be used in sabot type, ammunition, full bore shotgun ammunition, and in conventional case type rifle ammunition.

Abstract: A gas gun-launched, propulsion-assisted scramjet projectile adapted to be fired from a gun, preferably at velocities greater than Mach 5, includes a body with an external compression section, an internal compression section, a combustion section, a nozzle section, and means for channeling ambient fluid to an engine in one of the sections of the body, the channeling means and the body cooperating with the engine to produce thrust greater than drag when the projectile travels at velocities greater than Mach 5. The projectile further includes a plurality of circumferentially spaced stabilization fins located at the nozzle region of the body and a sabot assembly releasably secured to the rear portion of the body, where the sabot assembly includes a plurality of elements joined together about the body rear portion to form a housing for protecting the body rear portion from explosive gases in the barrel of the gun.

Abstract: A munitions cartridge transmitter capable of emitting an electromagnetic signal after discharge from a cartridge propelling device comprises a signal generator, an electromagnetic signal transmitter coupled to the generator, an antenna coupled to the transmitter, and a hollow cartridge for housing the generator, the transmitter, and the antenna. The transmitter is energized after discharge of the cartridge propelling device by a power source contained in the cartridge.

Abstract: A projectile propelling system includes a gun barrel filled with a gaseous propulsive mixture, a projectile having a front cone wall and a rear cone wall, and a driver for initially propelling the projectile in the gun barrel to an initial velocity above the detonation velocity of the gaseous propulsive mixture to produce a shock wave at the front cone wall followed by a detonation wave resulting from the reflection of the shock wave inside the barrel, which detonation wave is applied to the rear cone wall to increase the velocity of the projectile. The front cone wall and rear cone wall of the projectile are such as to create a "mach stem" in the form of a disc normal to the longitudinal axis of the projectile, of sufficiently high pressure and temperature to ensure ignition of the gaseous propulsive mixture.

Abstract: A small arms projectile containing a series of vents or apertures in a geometric arrangement such that the projectile's leading edge is capable of penetrating the target without structural failure and depositing the majority of its residual energy in the target. In addition, the design of the body allows the projectile to be spin stabilized when fired from any suitable weapon.

Abstract: There is described a cylindrical bullet or projectile having imbedded coaxially in lead or like bullet metal, a internal expansion control insert of copper or like bullet-jacketing metal. The insert has a cylindrical outer surface having a common cylindrical interface with the outer portion of the bullet. The inner surface of the insert has a star-shaped configuration constituted by lead-filled, axially-disposed, V-shaped channels the apices of which are adjacent the outer surface of the insert and the sides of which flare out symmetrically about radii to an intercept with the hollow core of the bullet which extends from a position at or near the base of the bullet as a cylindrical surface to a position at or near the nose of the bullet whereupon it extends on an inverted, frusto-conical surface to the nose-end of the bullet.

Abstract: A low-drag supersonic tubular projectile with self-contained thrust augmetion and capable of simultaneous dual internal air flows. One is a centrally located supersonic flow for providing low-drag characteristics, and the other a subsonic flow annularly arranged about the supersonic flow path, comprising a ramjet structure with solid fuel for deriving thrust augmentation enabling the projectile to achieve a terminal velocity which is substantially the same as or exceeding muzzle velocity.

Abstract: A sabot for use with a spin stabilized projectile comprises a closed front end portion having lines or strips of weakness running along sides of the sabot which meet at a front end surface of the sabot, thereby providing a continuously extending line or region of weakness across the front end surface.Preferably, the sabot front end portion has at least three, desirably four or more, lines or strips of weakness running along the length of the front end portion. These lines or strips may meet at an intersection of lines or strips at the front end surface, but they preferably meet at a front end membrane region.Discarding sabots according to the present invention are especially suitable for use with tubular projectiles. These projectiles may for example be used in training ammunition rounds which are suitable for firing from the UK 30 mm RARDEN (UK Registered Trade Mark) Gun.

Abstract: A one piece interally rifled projectile having a cylindrical annular wing surrounding an teardrop-shaped axial core connected to such wing by three helical, canted, tapered vanes. The projectile has a smooth exterior surface, and may be equipped with an explosive charge. As the projectile passes through the air, it rotates so as to provide a stable long-range trajectory.