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WO2025122190A2 - Cartouche de munitions avec projectile frangible - Google Patents

Cartouche de munitions avec projectile frangible Download PDF

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Publication number
WO2025122190A2
WO2025122190A2 PCT/US2024/031997 US2024031997W WO2025122190A2 WO 2025122190 A2 WO2025122190 A2 WO 2025122190A2 US 2024031997 W US2024031997 W US 2024031997W WO 2025122190 A2 WO2025122190 A2 WO 2025122190A2
Authority
WO
WIPO (PCT)
Prior art keywords
projectile
polymer resin
particulate filler
density
lead
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/US2024/031997
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English (en)
Other versions
WO2025122190A3 (fr
Inventor
Robert Folaron
Howard Kent
Jennifer Folaron
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Smart Nanos LLC
Original Assignee
Smart Nanos LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Smart Nanos LLC filed Critical Smart Nanos LLC
Publication of WO2025122190A2 publication Critical patent/WO2025122190A2/fr
Publication of WO2025122190A3 publication Critical patent/WO2025122190A3/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/72—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material
    • F42B12/74—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the core or solid body
    • F42B12/745—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the core or solid body the core being made of plastics; Compounds or blends of plastics and other materials, e.g. fillers

Definitions

  • Conventional small arms ammunition i.e., ammunition designed for use in portable and semi-portable firearms such as pistols, rifles, and shotguns, typically comprises a cartridge with a casing loaded with a propellant powder and a projectile (e.g., a bullet).
  • a projectile e.g., a bullet
  • An impact-sensitive primer ignites the propellant powder when struck by a firing pin, causing the projectile to be propelled, i.e., fired, downrange.
  • Projectiles for conventional small arms ammunition are predominantly manufactured from lead or lead alloys, often jacketed in copper.
  • Lead is often chosen for conventional small arms ammunition because it is sufficiently soft to engage rifling in a barrel without causing damage to the barrel. Additionally, its high density, when compared to other materials, helps maintain velocity thereby providing good range, muzzle energy, and effective target penetration.
  • the present disclosure is directed in general to frangible projectiles used in ammunition cartridges.
  • the frangible projectiles may comprise toughened polymer resin compositions with nano-particle additives.
  • a projectile and ammunition round may include a toughened polymer matrix, specifically a toughened polymer resin comprising an elastomer-modified epoxy functional adduct formed by a reaction of a bisphenol liquid epoxy resin and a carboxyl terminated butadiene-acrylonitrile elastomer, a particulate filler distributed in and through the toughened polymer resin, and a curative agent by which the toughened polymer resin with distributed particulate filler is cured.
  • the cured toughened polymer resin with distributed particulate filler forms a projectile body in a desired projectile shape, e.g., the shape of a bullet.
  • the frangible projectile is incorporated into a shell casing to provide an ammunition round.
  • the elastomer content is about 30%-60% by weight with respect to the toughened polymer resin.
  • the filler has a density greater than a density of the resin, and preferably the projectile has an average density equal to or less than the density of lead.
  • a projectile with a toughened polymer resin, a curative agent, and a particulate filler is provided.
  • the curative agent cures the toughened polymer resin, and the particulate filler is distributed throughout the resin.
  • the particulate filler has a density greater than a density of the resin.
  • the cured toughened polymer resin is about 3%-30% by weight of the total projectile composition.
  • the projectile has an average density that is less than the density of lead, for example, less than 65% of the density of lead.
  • the particulate filler is about 70%-97% by weight of the total projectile composition.
  • the particulate filler may include copper.
  • the projectile is substantially lead-free, and the particulate filler may include a material selected from the group consisting of copper, tungsten, lead, brass, bismuth, iron, and steel.
  • a cartridge may comprise a casing with a projectile projecting from an end of the casing in which the cartridge may also comprise a propellant that is adapted to propel the projectile from the casing.
  • the casing may be formed from a material such as brass, bi-metallic, aluminum alloy, polymer, and polymer-metallic.
  • a projectile may include a toughened polymer resin, a curative agent, and a particulate filler distributed throughout the resin.
  • the filler has a density greater than a density of the resin.
  • the particulate filler may be 70%-90% by weight of the total projectile composition.
  • a projectile may include a polymer resin, a curative agent configured to cure the polymer resin, a particulate filler distributed through the polymer resin, and a payload for target penetration.
  • the particulate filler may have a density greater than a density of the polymer resin.
  • the cured polymer resin may be about 3%-30% by weight of the total projectile composition.
  • the payload may comprise metal balls that are mixed in the particulate filler. Additionally or alternatively, a cavity may be formed in the resin, wherein the metal balls are inserted in the cavity.
  • a toughened polymer resin system does not require a separate curative agent to achieve a final “cured” state, such as a thermoplastic resin system.
  • FIGURE 1 is a perspective view of an exemplary ammunition cartridge with a molded, fragmenting projectile according to an aspect of the disclosure.
  • FIGURE 2 is a top perspective view of molded, fragmenting projectiles as used in FIGURE 1
  • FIGURE 3 shows exemplary materials that may be used in constructing the molded, fragmenting projectiles as in FIGURE 1.
  • FIGURE 4 is a sectional, elevational view of another embodiment of a molded, fragmenting projectile.
  • FIGURE 5 is a partial, sectional view of molded, fragmenting projectiles according to another aspect of the disclosure.
  • FIGURE 6 is a sectional, elevational view of a molded, fragmenting projectile in an ammunition cartridge according to another aspect of the disclosure.
  • FIGURE 6 also shows a conventional projectile by way of comparison.
  • FIGURE 7 are partial, sectional, elevational, and perspective views of fragmenting projectiles according to further aspects of the disclosure.
  • FIGURE 8 shows examples of payloads that can be carried by molded, fragmenting projectiles according to another aspect of the disclosure.
  • FIGURE 9 shows another exemplary payload that can be carried by molded, fragmenting projectiles according to an aspect of the disclosure.
  • FIGURE 10 shows impact examples of molded, fragmenting projectiles upon targets according to further aspects of the disclosure.
  • lead-free refers to a projectile that does not use lead intentionally in its composition but may include a trace amount of lead as an unavoidable impurity in other components of a projectile composition.
  • toughness means an ability to absorb energy and plastically deform before fracturing as opposed to being “brittle.”
  • a “toughened resin” refers to a polymer containing an elastomeric component that imparts toughness and comprises the cured state of the resin.
  • a chemical component providing the quality of toughness may be provided by any constituent component used to produce the resin or may result from a curing reaction.
  • hardener refers to any type of curative agent for a resin.
  • ranges includes all combinations of sub-ranges. For instance, a range from 100-200 includes ranges from, e.g., 110 to 150, 170 to 190, and 153 to 162. Similarly, “limits” means all sub-limit combinations, e.g., a limit of up to 7 also includes a limit of up to 5, up to 3, and up to 4.5.
  • frrangible refers to a composition that is designed to exit a barrel of a weapon, that is a rifle, pistol, shotgun, or other suitable weapon, in a substantially monolithic form and fragment into multiple pieces either during flight, upon impact with an object, or upon initiation of a fragmentation event initiated by a timer, a pressure change or sensor, el cetera.
  • frangible jacket refers to a characteristic of an external surface and/or physical construction of the projectile being made from a “frangible” material, wherein a primary shape of the projectile and its physical strength are derived from the frangible material. This may also include frangible materials with a thin layer of solid metal around a bearing surface of the projectile.
  • frangible jacket is not to be confused with projectiles referred to as “jacketed frangible,” wherein the projectile is monolithically manufactured of frangible material, with a thin layer of metal designed to “contain” the projectile made of frangible material.
  • Cargo refers to something that is not required to achieve an overall physical shape/size or basic physical/mechanical characteristic of the projectile required for loading into a cartridge, or to achieve an appropriate or desired launch/flight of the projectile.
  • Cargo is utilized to deliver new projectile effects, or to enhance projectile effects.
  • cargo may deliver effects additive to the base kinetic energy delivered through a combination of mass and velocity.
  • target penetration refers to comprehensive ballistic capabilities of an ammunition round, such as the projectiles disclosed herein, encompassing its performance in and on a target. This includes an ability of the projectile to penetrate a surface of the target, a creation and characteristics of a wound channel, and overall wounding effect in and on the target.
  • Target penetration also referred to as “effect on target,” involves assessment of the round’s entry, trajectory, and exit within the target, as well as resultant damage inflicted.
  • This definition encompasses parameters such as depth of penetration, expansion, fragmentation, energy transfer, and tissue disruption, providing a holistic view of the projectile’s efficacy in achieving its intended ballistic and terminal effects.
  • a cartridge or “round” is broadly designated by element number 10 and includes a molded, frangible projectile 12 and a generally cylindrical shell or casing 14 having a base, also referred to as a first or proximal end, 16 and a mouth or opening formed at a second or distal end 18 from which the molded, frangible projectile 12 extends.
  • a base also referred to as a first or proximal end, 16 and a mouth or opening formed at a second or distal end 18 from which the molded, frangible projectile 12 extends.
  • Any caliber of cartridge 10 may be utilized such as 20mm, 11.4mm (.45 in.) caliber Automatic Colt® Pistol cartridge (“.45 ACP”), and the like.
  • the base 16 in FIGURE 1 includes a primer pocket (not shown) with a flash hole in communication with an interior of the casing 14.
  • a primer (not shown) is disposed in the primer pocket, and a powder charge of propellant, such as smokeless gunpowder, is loaded in the interior of the casing 14 in communication with the flash hole.
  • the casing 14 may be drawn from brass or aluminum alloys or molded from plastic. Any commercially available casing 14 is suitable for this purpose.
  • “caseless” ammunition rounds may be utilized.
  • a propellant charge is loaded into a projectile having an extended base forming a powder enclosure, or wherein propellant is mixed with a suitable binder and molded into a shape of a cartridge case.
  • the projectile such as projective 12 is fixed in position relative to the propellant.
  • the principles of the present disclosure are applicable to such caseless ammunition, as well as to muzzle-loading firearms using either separate powder-and-ball or combustible (e.g., paper) cases.
  • FIGURE 2 shows that various payloads may be inserted into the molded, frangible projectile 12.
  • the moldable projectile 12 may have a solid core or a hollow core, also referred to as a cavity, 20 and a boat-tail end or base 22.
  • Internal payloads within the cavity 20 may include chemical or metallic powders, crystalline incendiary materials, solid cores, target marking compounds, and preformed fragments, and the projectile 12 may further include aerodynamic tips, penetrative tips, tracing compound inserts, brass drive band base cups, impact fired shaped charges, and the like, as explained below.
  • the projectile 12 is retained in the mouth 18 of the casing 14.
  • the projectile 12 may include a non-metallic matrix with a particulate filler distributed therethrough.
  • the projectile 12 preferably is lead-free. Nonetheless, the filler may comprise lead in alternative embodiments.
  • the matrix is a toughened polymer resin.
  • a preferred toughened epoxy resin is an elastomer-modified epoxy functional adduct formed by the reaction of a bisphenol, a liquid epoxy resin, and a carboxyl terminated butadiene-acrylonitrile elastomer. The elastomer content is approximately 30%-60% by weight. This material is commercially available from the Dow Chemical Company under the trademark FORTEGRATM 201.
  • the filler may be any powder or particulate.
  • Non-limiting examples include lead, depleted uranium, copper, tungsten, bismuth, ceramic, bronze, iron and steel, clay, mica, silica, calcium carbide, and micro-encapsulated materials.
  • a selected material is encapsulated in a particulate-sized shell.
  • the filler preferably is of higher density than the cured, toughened polymer resin system.
  • FIGURE 3 shows exemplary materials or powders 24 that may be used to form the molded, frangible projectiles 12.
  • the materials or powders 24, and combinations thereof, may include copper or brass nano-particles 26, tungsten nano-particles 28, and/or iron or steel nano-particles 30.
  • the materials 24 may be blended to achieve desired cost, weight, and performance for the projectiles 12. For instance, polymerized, nano-particle-constructed projectiles 12 made from these materials 24 have significantly improved on-target and in-target performance when compared to homogenous metallic projectiles, such as solid lead projectiles, even though the disclosed projectiles 12 may have less mass than the metallic projectiles. Depending on material selection, the projectiles 12 are also less toxic than lead.
  • an exemplary projectile 112 having a hollow core 120 and a base 130 can be filled or loaded with a penetrating device or penetrator 132, an energetic compound 134, and a penetrating rod 136, which may be sharpened aluminum to achieve initial penetration of a target.
  • a penetrating device or penetrator 132 an energetic compound 134
  • a penetrating rod 136 which may be sharpened aluminum to achieve initial penetration of a target.
  • the projectile 112 Upon impacting the target, the projectile 112 disintegrates and the penetrator 132 pierces the target.
  • FIGURE 5 shows “Signature on Target” (“SOT”) variations of the exemplary projectile 112 in FIGURE 4. From left to right, SOT with Tip, SOT Different Energetic Primer and “Firing Pin”, SOT with Tip and Tracer, and SOT Primer and Tracer.
  • SOT Signature on Target
  • FIGURE 6 shows a cartridge 210 having a frangible projectile 212 inserted in a casing 214.
  • the projectile 212 includes a hollow core 220 with body material 222 blended for desired weight and a tip 236 inserted or molded into the hollow core 220.
  • Drive bands and base cup 238 seal the projectile 212 above powder or propellant 240, which in turn is above a primer 242
  • FIGURE 7 shows exemplary projectiles 312 with molded-in features for aerodynamics and on-target effects. For instance, ballistic and penetrative tips, tracer cups, gas checks, and semi-jackets may be used in a variety of projectiles 312.
  • FIGURE 8 shows a variety of payloads, penetrators, and energetic compounds 412, such as radiological materials, radar reflective materials, and luminescent payloads. Such payloads may be used in molded cavities of projectiles according to the present disclosure for training, target marking, and special purpose applications.
  • FIGURE 9 shows a cartridge 510 having a frangible projectile 512 in a casing 514.
  • the projectile 512 includes a cavity 520 with a payload of cylindrical or spherical fragments 522 carried therein.
  • the fragments 522 may be tungsten ball fragments measuring one-sixteenth of an inch in diameter (1/16 in.) or greater, and the balls 522 may be blended in the matrix or inserted in the cavity 520.
  • FIGURE 10 shows target penetrating results from another cartridge 610 using a frangible projectile 612, which, in this example, was a 7.62x51mm SOT. Specifically, from left to right, the fragmenting frangible projectile 612 caused holes in a steel plate with a 1/2 inch thickness that were twenty percent (20%) larger than holes caused by a heavier, conventional 147 grain full metal jacket 7.62x51mm bullet.
  • Example 1 Projectiles having nominal dimensions conforming to the .45 ACP standard were produced using varying amounts of the toughened epoxy resin described above as the matrix, and more specifically, a toughened polymer resin comprising an elastomer-modified epoxy functional adduct formed by the reaction of a bisphenol, a liquid epoxy resin, a carboxyl terminated butadiene-acrylonitrile elastomer, and iron powder (US Standard Mesh size 108) as the filler, using the following process.
  • a toughened polymer resin comprising an elastomer-modified epoxy functional adduct formed by the reaction of a bisphenol, a liquid epoxy resin, a carboxyl terminated butadiene-acrylonitrile elastomer, and iron powder (US Standard Mesh size 108) as the filler, using the following process.
  • the epoxy resin was heated to a temperature of approximately 49°C (120°F) to reduce its viscosity and permit mixing and distribution of the filler.
  • the proper temperature depends on particle size. The finer the powder, the lower the viscosity needed for proper mixing.
  • the filler was mixed into the resin. After mixing, a hardener, an amine, was added to the resin and filler mixture at a ratio of 10 parts resin to 1 part hardener. The mixture was then poured into a prepared projectile mold. The resin, filler, and hardener mixture was cured to produce an epoxy polymer, and the projectile was removed from the mold. The finished projectiles were found to have the filler distributed throughout the resin.
  • the mass of the projectiles varied depending on the type and amount of filler used, as well as the total length of the projectile.
  • the mass of the projectile can be varied from a baseline by changing either its density or its volume. This is limited by a need to maintain a minimum length to ensure that the projectile does not jam in a barrel and will not tumble during flight.
  • Projectiles were produced with a range of masses from less than 2.6g (40 grains) to over 5.8g (90 grains). By comparison, a conventional lead projectile with the same exterior dimensions would typically have a mass of about 14.9g (230 grains). Accordingly, the average density of the projectiles was less than 45% of the density of a lead projectile of equal exterior dimensions.
  • the properties of this projectile are such that, in response to an impact of enough force to fracture the projectile, the projectile will break into large fragments having significant mass that are substantially larger than powder particles, instead of breaking up into powder or dust, which is generally common with known prior art projectiles of composite construction.
  • the fragments may have a minimum size on the order of about 2.5mm (0.10 in.), or about 20 times the size of powder particles.
  • Example 2 The projectiles described above can be incorporated into cartridges having greater powder loads. In combination with a lower-weight projectile, a necessary muzzle velocity and energy to exhibit lethality (i.e., temporary, and permanent wounding characteristics), similar to a lead projectile when used as offensive or defensive ammunition, was achieved.
  • lethality i.e., temporary, and permanent wounding characteristics
  • projectiles described above in 7.62x51mm caliber having a weight of about 5.8g (90 grains) were loaded into cartridges with a powder load sufficient to generate a muzzle velocity of about 914 m/s (3000 ft/s) to 975 m/s (3200 ft/s) when fired from a 40.6cm (16 in.) long barrel.
  • the cartridges were found to exhibit unexpected performance characteristics.
  • the projectiles had excellent structural integrity and did not fail or break up in flight even at the extremely high muzzle velocities as a result of a synergistic interaction between the polymer resin and the particulate filler.
  • the amount of the propellant and the mass of the projectile preferably are selected to produce a muzzle energy of at least 400 foot-pounds when fired from a 5-inch-long barrel, and more preferably are selected to produce a muzzle energy of at least 900 foot-pounds when fired from a 5-inch-long barrel.
  • the perceived recoil of these cartridges was no greater than reference cartridges of the same caliber loaded with conventional jacketed lead projectiles to standard velocities.
  • the cartridges did not exhibit signs of over-pressurization, such as case cracking or raised primers, and are therefore suitable for use in known firearms.
  • projectiles and ammunition rounds are especially lethal and suitable for hunting, military, law enforcement, or self-defense purposes while maintaining recoil at levels equal to or less than conventional lead projectile rounds.
  • performance of these projectiles and ammunition rounds allow a handgun to provide lethality that is typically associated with rifle ammunition.
  • performance of these projectiles and ammunition rounds allow rifles, such as those chambered in 5.56mm, to perform “up a caliber,” meaning that 5.56mm ammunition in accordance with the subject matter disclosed herein exhibits the same or similar ballistic performance when compared to that of a conventional, lead 30-caliber round.
  • the loads may be varied to suit a particular end use. For example, if the projectile mass is reduced to about 2.6g (40 grains), minimal to no penetration of a target is observed. At about 3.9g (60 grains), some penetration is observed. At 5.2g to 5.8g (80 grains to 90 grains), excellent penetration is observed, as described above. Projectiles of lower masses may be desirable as target rounds or non-lethal rounds. Projectiles without filler also may be used as target rounds or non- lethal rounds.
  • Additional aspects of the present disclosure may include one or more of the following objectives or outcomes.
  • Cargo-Carrying / Payload-Carrying Presuming that the jacket is frangible, when the projectile impacts a target (hard or soft), the frangible jacket disintegrates, and the cargo is delivered.
  • the cargo can be a visual bloom, incendiary reaction, explosive reaction, explosion amplification, armor/barrier penetrator, balls/spheres, marking/tracking compound, shrapnel, et cetera. Additionally, multiple types of cargos may be mixed in the same projectile load. a)
  • a significant advantage to this approach is that the projectile jacket “gets out of the way” quickly without directly affecting the cargo being carried.
  • SOT Signature-On-Target
  • the cargo/payload can be integrated into the frangible jacket, such as in the case of an explosive reaction, explosion amplification, incendiary, visual bloom, or marking.
  • Cargo may be added to the frangible projectile at any point during manufacturing of the projectile.
  • This may include: i) Cargo that is placed directly into the frangible material; ii) Cargo that is pre-assembled and then integrated into the projectile during formation of the projectile; and iii) Cargo that is assembled and/or integrated into the projectile after formation of the projectile.
  • the projectile may be molded around the cargo/payload.
  • the cargo/payload may be inserted/assembled into the projectile after the projectile is molded.
  • the cargo/payload may further be inserted from the front or the rear.
  • the cargo/payload may also be assembled and then sealed-off with adhesive, a tip, a cap, et cetera. Sealing may be done at either the front or the rear.
  • the cargo/payload can be molded into the frangible jacket.
  • the payload is added to the polymer resin system prior to molding.
  • the payload can be integrated into the frangible jacket as a separate molding step.
  • the Cargo may comprise: i) Discrete element(s) that are manufactured separately and then assembled as outlined above. ii) Integral elements within the frangible projectile/jacket material and molded directly.
  • SOT The projectiles disclosed herein may act as a replacement for tracer rounds or may comprise a “traditional” tracer + SOT round. Further, the projectiles described herein may comprise a “new” tracer + SOT. a) The projectiles disclosed herein may comprise energetics-based projectiles of the following compositions: i) Nano-metals; ii) Nano-additives; and iii) Additional additives b) The projectiles disclosed herein may exhibit a plurality of visual blooms including: i) Visual booms; ii) Thermal booms; and iii) Colored booms within a visual wavelength spectrum.
  • Tracer functionality of the projectiles described herein may include traditional tracer compounds.
  • the tracer functionality of the projectiles described herein may include a new type of tracer compound/system.
  • the projectiles described herein may comprise a luminescent tracing or incendiary element which may be comprised of powders, slurries, pellets, optical lenses, or combustible or luminescent discs or cups.
  • the projectiles described herein may comprise compounds or elements that may be left behind post-impact that may be tracked visually, thermally, or via other frequencies. Further, the compounds or elements may be tracked by human visuals, drones, satellites, et cetera.
  • the projectiles described herein may comprise a plurality of penetrators. Such penetrators may vary in size, profile, shape, configuration, and make-up. b) The projectiles described herein may comprise a jacket-type penetrator similar to that of a lead-based, jacket road. The projectiles described herein remain frangible and may be constructed from materials including, but not limited to, copper and tungsten. c) Further, the projectiles described herein may comprise of uniformly or non- uniformly distributed parties, i.e., cargo, designed to fragment and amplify effectiveness of the projectile.
  • Open-Tip / Hollow-Point In an alternate embodiment of the projectiles described herein, an open or hollow-point configuration may be employed. In this instance, the projectile may expand into multiple pieces. In an alternate embodiment, the projectile may comprise a single piece with wing, as is traditional for monolithic copper type projectiles.
  • Flutes / External Features In an alternate embodiment of the projectiles described herein, flutes and other external features may be employed. The flutes and other external features are designed to impart energy radially in soft targets, increasing the so-called wound channel or wound cavity within the target.
  • exemplary embodiments as disclosed herein may include, but are not limited to:
  • Embodiment 1 A projectile comprising a toughened polymer resin, a curative agent by which the toughened polymer resin is cured, and a particulate filler distributed through the toughened polymer resin, the particulate filler having a density greater than a density of the toughened polymer resin, and wherein the cured toughened polymer resin is about 3% to 30% by weight of the total projectile composition.
  • Embodiment 2 The projectile as in Embodiment 1, wherein an average density of the projectile is less than the density of lead.
  • Embodiment 3 The projectile as in Embodiments 1 or 2, the projectile has an average density that is less than about 65 % of the density of lead.
  • Embodiment 4 The projectile as in any of the foregoing Embodiments, wherein the particulate filler is about 70% to 97% by weight of the total projectile composition.
  • Embodiment 5 The projectile as in any of the foregoing Embodiments, wherein the particulate filler includes copper.
  • Embodiment 6 The projectile as in any of the foregoing embodiments, wherein the projectile is substantially lead-free.
  • Embodiment 7 The projectile as in any of the foregoing embodiments, wherein the particulate fdler includes a material selected from the group consisting of copper, tungsten, lead, brass, bismuth iron, and steel.
  • Embodiment 8 A projectile comprising a polymer resin, a curative agent configured to cure the polymer resin, a particulate filler distributed through the polymer resin, the particulate filler having a density greater than a density of the polymer resin, and a payload for target penetration.
  • Embodiment 9 The projectile as in Embodiment 8, wherein the cured polymer resin is about 3% to 30 % by weight of the total projectile composition.
  • Embodiment 10 The proj ectile as in Embodiments 8 or 9, wherein the payload is a plurality of metal balls mixed in the particulate filler, or further including a cavity formed in the resin, the metal balls being carried in the cavity.
  • Embodiment 11 The projectile as in any of the foregoing Embodiments, wherein the polymer resin does not require a separate curative agent to achieve a cured or solidified state.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
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  • General Engineering & Computer Science (AREA)
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Abstract

Un projectile a une charge particulaire répartie dans une résine polymère durcie et un mélange composite, le mélange composite étant fondu ou mélangé avec un agent durcisseur ou un agent moussant avant l'injection ou le versement dans un moule, habituellement sous pression. La charge particulaire a une densité supérieure à une densité de la résine et peut comprendre des métaux et des additifs pour ajouter du poids et d'autres propriétés mécaniques au mélange composite. La résine polymère peut représenter d'environ 3 % à environ 30 % en poids de la composition totale du projectile ayant une densité moyenne inférieure à la densité du plomb. La charge particulaire peut représenter d'environ 70 % à 97 % en poids de la composition totale du projectile et peut comprendre du cuivre, du tungstène, du plomb, du laiton, du fer, du bismuth et/ou de l'acier.
PCT/US2024/031997 2023-06-02 2024-05-31 Cartouche de munitions avec projectile frangible Pending WO2025122190A2 (fr)

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US202363505781P 2023-06-02 2023-06-02
US63/505,781 2023-06-02

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WO2025122190A3 WO2025122190A3 (fr) 2025-07-10

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2787182B1 (fr) * 1998-12-10 2005-07-08 Poudres & Explosifs Ste Nale Projectile non letal pour arme a feu
US8402896B1 (en) * 2005-08-05 2013-03-26 University Of Louisiana At Lafayette Hybrid-luminescent munition projectiles
US8689696B1 (en) * 2013-02-21 2014-04-08 Caneel Associates, Inc. Composite projectile and cartridge with composite projectile
WO2019079351A1 (fr) * 2017-10-17 2019-04-25 Smart Nanos, Llc Projectiles composites multifonctionnels et leurs procédés de fonctionnement
US10466023B2 (en) * 2018-03-28 2019-11-05 Ascendance International, LLC Long range large caliber frangible round for defending against UAV'S

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