68 results about "Armor-piercing shell" patented technology

A non-expanding bullet platform may comprise a modular jacket having an internal nose cavity and an internal heel cavity. The cavities may be separated by a divider. The cavities may be filled with suitable materials to produce various types of non-expanding bullets, such as military ball, trace, armor piercing, etc. Inventive non-expanding bullets may comprise full metal jacketed bullets or may have exposed material. The inventive bullets may be non-expanding, wherein the diameter of the bullet does not substantially increase upon impacting soft tissue.

A perforating system has a perforating module comprising a unitary body of explosive. The explosive is contained within a non-explosive casing, or liner, having formed indentations and a cover thereover. The indentations, which will transform into explosively formed penetrators (EFP's) upon detonation, have a perimeter shape that allows for improved packing density, e.g., a hexagonal perimeter, which results in relatively little “dead space” wherein no perforating penetrators are generated. In operation, the module provides a relatively dense shot pattern and substantially reduced amount of post-detonation debris that could clog the perforations and/or require remedial clean-up or repeat perforation.

The invention provides a method for preparing large-size bulk amorphous composite materials, which belongs to the field of preparing amorphous alloy (metallic glass) and composite materials thereof. The method applies to superplastic diffusion bonding of bulk amorphous substances and fiber, and is characterized in that the bulk amorphous substances and the fiber are arranged in a certain mode (such as a layered mode and the like), put into a mold, pressurized and thermally insulated under gas protection or vacuum for superplastic diffusion bonding; pressure is released after a certain period of time; and workpieces are taken out of the mold. The invention also provides a novel device for preparing large-size bulk amorphous, fiber/amorphous composite materials through superplastic diffusion bonding. The device consists of a heating system, a heat insulation system, a mold system, a loading system, a gas protection system and a cooling system. The method and the device have the advantages of reinforcing the fiber, enabling the shape of amorphous alloy-base composite materials to be designed, enabling the volume of the fiber in the composite materials to be controlled and enabling the fiber to be used in other various amorphous alloy systems low in amorphous formation capability, and are applicable to armor boards, armor-piercing shells and the like.

A sub-calibre projectile incorporating a penetrator and a sabot formed of several segments, the penetrator and sabot incorporating profiles that cooperate with one another so as to ensure the axial drive of the penetrator by the sabot when the projectile is being fired, such projectile wherein there is axial play (J) between the profile on the sabot and that on the penetrator so as to enable a limited relative axial displacement of the sabot with respect to the penetrator, means being provided to ensure the radial locking of the sabot segments by the penetrator in the foremost position of the sabot with respect to the penetrator, this locking no longer being ensured in the rearmost position of the sabot with respect to the penetrator.

The invention belongs to the technical field of powder metallurgy, and relates to a tungsten alloy and a preparation method thereof. The tungsten alloy comprises components in the specific expressionof W100%-tNiaXbYcZd. Due to the reasonable composition proportion and strict control over process parameters of all steps, the tungsten alloy material has the physical and mechanical properties of high density, high hardness and high compressive strength. Used as a armour-piercing bullet core, the good armour piercing power is achieved, meanwhile, due to the facts that the low plasticity is achieved, a brittle phase is distributed in the tissue structure, holes are distributed, and proper porosity is formed, cracks are formed when the bullet core pierces an armour and is impacted by stress waves, so that the bullet core becomes a fragment breaking source, and finally a large number of broken pieces are formed after the armour is pierced. The alloy has the characteristics of being good in armour piercing power and large in number of broken pieces after the armour is pierced, and wider space is provided for design and application of new-generation armour-piercing bullets in China.

Provided herein are penetrator projectiles for use with explosive ordnance disposal disrupters, and related methods of making and using. The penetrator projectile has a tip, neck, shaft and base, wherein the geometry and composition of the different elements are selected to ensure the projectile is ballistically stable after firing to provide improved free-flight characteristics and corresponding explosive ordnance disruption.

The invention provides a protection method for resisting penetration of a high velocity armour piercer. The protection method comprises the step of arranging an armour protective device formed by sequentially stacking a deformation development layer, a high density high extension layer, an explosive layer, an induced detonation array layer and an explosion protection layer outside a protected object; when the high velocity armour piercer penetrates, the deformation development layer is firstly penetrated and penetration range is expanded; the high density high extension layer forms a conical hopper at a penetration position under the action of the deformation development layer; the induced detonation array layer determines the penetration position by inducing distance from the high density high extension layer, and explosive in the explosive layer is exploded at the penetration position; and energy converged after the explosive is exploded reacts on the armour piercer, so that penetration effect of the armour piercer is destroyed, and damage of the armour piercer on the protected object is reduced or avoided. By adopting the protection method provided by the invention, a high-value object can be effectively protected to resist penetration of the high velocity armour piercer, so that armour protection effect is improved.

The invention discloses an external ballistic trajectory tail section bottom explosion speed-increasing penetration armor-piercing projectile. According to the external ballistic trajectory tail section bottom explosion speed-increasing penetration armor-piercing projectile, a plurality of delivery modes such as missile, rocket, artillery, air drop, unmanned aerial vehicle and manual layout delivery modes are adopted. The external ballistic trajectory tail section bottom explosion speed-increasing penetration armor-piercing projectile is characterized in that a shaped charge is additionally arranged at the rear portion of a penetration warhead; a proximity fuse is additionally arranged at the front end of the warhead; and when the warhead is a certain distance away from the surface of a target, the fuse controls the shaped charge at the rear portion of the penetration warhead to be detonated, so that shaped charge jet flow is jetted backwards to generate an instantaneous reaction force, so that the penetration warhead is pushed to greatly increase speed in an extremely short time and within an extremely short distance, and is ejected to and penetrates the target; the warhead can obtain high penetration capacity without a bulky and huge barrel artillery or the long-distance acceleration of a rocket; and series multi-stage shaped charges can also be used, so that the warhead canobtain higher speed.

The invention discloses a machining process of a sabot of an armor-piercing discarding sabot with a large length-to-diameter ratio. The machining process comprises the following steps of (1) manufacturing a blank; (2) carrying out rough turning outer circle and perforating a center hole; (3) dividing trisection petal position lines and drilling and tapping process screw holes; (4) saw-cutting three petals for machining; (5) carrying out rough machining of general milling at 120 degrees; (6) carrying out rough machining of general milling of an inner bore cambered surface; (7) rough turning a contour shape; (8) carrying out ageing treatment; (9) carrying out finish machining of continuous grinding at 120 degrees; (10) carrying out finish machining of general milling of the inner bore cambered surface; (11) carrying out semi-finish turning on the contour shape; (12) carrying out rough milling on an annular groove; (13) carrying out straightening; (14) carrying out finish turning on the annular groove; (15) carrying out finish milling on a sealing groove; (16) carrying out finish turning on the contour shape; (17) carrying out finish machining on an end surface and a fastening annulargroove; (18) carrying out straightening; (19) carrying out detection after burring and finishing unqualified products; and (20) marking and packaging detected qualified products. In this way, the sabot with the large length-to-diameter ratio being in a range of 22-27 mm can be manufactured, so that the sabot is high in quality and wide to apply.

The invention discloses a bulletproof composite armor and a manufacturing method thereof, and belongs to the technical field of ceramic and metal based composite material preparation. The manufacturing method for the bulletproof composite armor comprises the following steps: step 1 of uniformly mixing B4C powder with nano carbon fibers to obtain a mixture, putting the mixture into a regularly hexagonal mould, and quickly sintering the mixture into regularly hexagonal ceramic sheets through plasma discharge sintering; step 2 of splicing the regularly hexagonal ceramic sheets into a ceramic basematerial, filling splicing seams with micro-level copper foils, and performing vacuum hot-pressing sintering to obtain a ceramic deck; and step 3 of performing hot-isostatic pressing compounding on the ceramic deck and a bulletproof back board to obtain the bulletproof composite armor. The high-toughness composite ceramic bonded by the copper based metal material is compounded with the bulletproof back board to manufacture the bulletproof composite armor, so that multi-time impact resistance ability of armor-piercing bullets and armor-piercing incendiary ammunitions of the composite armor isgreatly improved.

The invention discloses a multi-parameter measurement system and method for a fragile type armor-piercing projectile dynamic target experiment fragment, and belongs to the technical field of fragile type armor-piercing projectile dynamic target experiment fragment parameter measurement. The measurement system includes a ballistic gun for firing a fragile type armor-piercing projectile, an armoredsteel plate, an experimental target, a speed measurement module which measures the speed of the fragile type armor-piercing projectile, a pulsed laser module which emits laser towards the fragment, aCCD camera group for recording holograms of the fragment at different moments, a timing control module and a calculation module. The fragile type armor-piercing projectile hits the armored steel plateto form the fragment. The timing control module is used for receiving a voltage signal of the speed measurement module and sending out a pulsed laser light-emitting voltage signal and a CCD camera exposure-starting voltage signal according to preset timing. The calculation module is used for collecting the holograms of the fragment recorded by CCD cameras and reconstructing software by using theholograms to obtain the size, shape, three-dimensional speed and acceleration parameters of the fragment. The size, shape, three-dimensional speed and acceleration parameter information of the fragment can be obtained.

The present invention is aimed at providing a wolfram heavy alloy for improving armor-piercing projectile core and its preparation method. Said invention is characterized by that it is formed from blue wolfram oxide, iron nitrate, nickel nitrate, manganese acetate and rare earth nitrate according to weight mixing ratio of 90-97 portions, 1-7 portions, 1-8 portions, 0.5-2 portions and 0.5-2 portions successively. Its preparation method includes three steps of mixture preparation, press-forming and vacuum sintering.

The invention discloses boron carbide ceramic and a preparation method and application thereof, and belongs to the technical field of weaponry. The preparation method of the boron carbide ceramic comprises the following steps: fully mixing boron carbide powder and carbon nanotubes in proportion, compacting and forming, then carrying out flash sintering-plasma sintering, and in the sintering process, generating nano-diamonds in situ from at least part of the carbon nanotubes, so as to obtain the boron carbide ceramic in which the carbon nanotubes and the nano-diamonds are uniformly distributed. The boron carbide ceramic prepared by the invention has the characteristics of high toughness, high hardness and high strength, can be used for bulletproof decks, and can resist multiple strikes of armor-piercing bullets and armor-piercing incendiary bombs.

A ballistic armor adapted to protect against armor piercing projectiles and to withstand multiple impacts of fragment simulating projectiles of a predetermined type, traveling at an initial velocity not exceeding a first velocity. The armor comprises a main armor layer and an auxiliary layer. The main armor layer is adapted to absorb most of the energy of the armor piercing projectiles and to withstand the impacts of the fragment simulating projectiles traveling at a velocity not exceeding a second velocity which is lower than said first velocity. The auxiliary layer is disposed in front of the main armor layer to face the projectiles, and is made of a material which is adapted to undergo a ductile failure mode when perforated by said fragment simulating projectiles and thereby experience localized deformation in the vicinity of each perforation, and which is adapted to cause the fragment simulating projectiles to experience such an energy loss associated with the perforation and deformation as to reduce their velocity from the initial velocity to a velocity not exceeding the second velocity.

The invention discloses a bulletproof composite armor and a preparation method thereof, and belongs to the preparation technology of ceramic and metal-based composite materials. The preparation methodof the bulletproof composite armor comprises the following steps that 1, B4C powder, carbon nanofibers, water-soluble phenolic resin and water are evenly mixed to obtain ceramic slurry, then spray drying is carried out to obtain a raw material, then cold pressing is carried out to obtain a regular hexagon green body; 2, the regular hexagon green body is put into a honeycomb of a faveolate carbonfiber mesh bag, the honeycomb is covered with carbon fiber cloth made of the same material, then vacuum hot-pressing sintering is carried out, an integral composite ceramic plate is formed; 3, the carbon nanofibers and aluminum powder are evenly mixed, an aluminum alloy bulletproof back plate is formed through powder metallurgy, forging forming and micro-arc oxidation treatment; and 4, the composite ceramic plate and the aluminum alloy bulletproof back plate are subjected to hot isostatic pressing compounding, and the bulletproof composite armor is obtained. According to the bulletproof composite armor and a preparation method thereof, the mode that a high-toughness composite ceramic is combined with the aluminum alloy back plate is adopted, so that the capacity of the composite armor forresisting multiple strikes of armor-piercing bullets and armor-piercing incendiary bullets is greatly improved.

The invention discloses an empennage stable shelling armor-piercing projectile support and a preparation method thereof. The projectile support is formed by combining three 120-degree carbon fiber composite clamping petals through hoops, a thread of the projectile support is formed by machining and combining a plurality of carbon fiber mold pressing plates with different laying layer angles and laying layer thicknesses, and an outer shell is formed by short carbon fiber prepreg yarns through mold pressing. The preparation method comprises the steps of projectile support design, thread preforming, clamping petal forming and the like. The preparation method provided by the invention is simple in process, the prepared projectile support is light in mass and small in inert mass, and compared with a projectile support made of a metal material, the initial velocity of ammunition is higher and the firing range is farther under the same working condition. In addition, the thread of the projectile support is formed by the continuous carbon fibers in advance, the thread is high in strength and good in consistency, a bullet core can be better supported during launching in a chamber, and the projectile support has the advantage of being higher in reliability.

The invention discloses a method for reducing an uncombined explosive welding detonator zone through energy polymerizing cover detonation. The method adopts the shaped charge theory of an armor-piercing bullet, detonates explosives with an energy polymerizing cover, improves detonation energy of the explosive, and reduces unstable detonation zone of the explosive, so as to achieve the purpose of reducing the defects in the detonator zone. The energy polymerizing cover is a conical body; the diameter at the top of the conical body equals to the outer diameter of a detonator; the diameter at the bottom of the conical body changes with the thickness of a doubling plate; and generally, the height of the conical body ranges from 25 to 50 mm, and the thickness of the conical body ranges from 2 to 5 mm. Preferentially, the energy polymerizing cover is made of wood or plastic; and when low detonation velocity explosives are detonated to weld the doubling plate which is made of precious metal and large in size and thickness, the energy polymerizing cover is filled with high velocity detonation explosives, so that the energy polymerizing effect is much better, the distance of the unstable detonation zone of the explosives is much shorter, and the defects of the detonator zone are much smaller. Compared with the traditional explosive welding detonation method, the method provided by the invention has the advantage that during the detonation of the explosives, the defects of the detonator zone can be reduced by more than 90% to the most extent.