38 results about "Armor-piercing shell" patented technology

The invention discloses an integrated selective-firing detonator special for oil and gas wells, including an integrated selective-firing detonator body and a detonation transmission device for receiving and transmitting external detonation signals to control selective firing of perforating bullets. The integration of the detonation transmission device, the selective-firing detonator body, and grounding protection components reduces assembly procedures and improves system integrity and reliability. The cooperation between a control mechanism and a selective-detonation mechanism significantly enhances the reliability of the product. Meanwhile, a grounding nut and a high-temperature shell improve electrical safety. The compact structure simplifies operation and improves working efficiency.

Exemplary embodiments of apparatus and methods for remotely and explosively cutting the casing of a UXO and separating the fuzing components from the main charge in the UXO. A remote explosive separation tool creates a Linear Explosively Formed Projectile (LEFP) charge to separate fuzing components from live explosive threats in UXO, for example only, a 155 mm artillery round. The tool functions by explosively deforming a copper liner into a linear projectile or penetrator which then impacts the UXO casing. The speed of impact enables the fuzing elements of the UXO to be removed from the main charge of the UXO either by directly cutting the fuze elements off or by imparting the fuze elements with enough momentum such that they break off. The process of dismembering the fuze elements occurs without detonating the main charge of the UXO. The tool may be remotely placed by an unmanned vehicle.

The application relates to a kind of anti-14.5mm armor-piercing bullet function gradient armor structures, and the application relates to a kind of function gradient armor structures.The application is to solve the problems that the traditional ceramic / metal or ceramic / fiber composite armor structure has large area density and excessive thickness, and the anti-bullet performance is difficult to further improve.The armor structure includes a ceramic panel, a gradient B4C / Al composite material and a packaging material, and the overall structure presents a 100-50% gradient change in ceramic content from the panel to the back plate.The thickness of the ceramic panel in the armor structure is 14-18mm;The gradient B4C / Al is a multi-layer structure, and the overall thickness is 12-15mm;The packaging material includes a crack arrest layer, an adhesive and a fiber layer.The application is used in the field of armor protection.

The invention relates to a penetrator for a projectile, in particular a sub-caliber kinetic energy projectile, wherein the penetrator has a terminal-ballistic body for attacking an armored target, wherein a hole is formed in the body, which extends along or parallel to the central longitudinal axis of the body entirely or along a predominant portion of the length of the body, wherein at least one exactly fitting insert part is introduced into the hole, which has a through-opening extending along or parallel to the central longitudinal axis of the insert part for guiding through an electrical or electronic line.

The sealing ring for the empennage stable armor-piercing bullet comprises a sealing ring body used for being placed on the empennage stable armor-piercing bullet, the sealing ring body comprises an upper circular ring, an oblique angle circular ring, a lower circular ring and rectangular teeth, the rectangular teeth are provided with first rectangular teeth, second rectangular teeth and third rectangular teeth, the outer diameter of the upper circular ring is 16 mm, the inner diameter of the upper circular ring is 10.5 mm, and the outer diameter of the lower circular ring is 10.5 mm. The overall thickness of the upper circular ring is 1.75 mm, the outer diameter of the bevel angle circular ring is 16 mm, the internal bevel angle of the bevel angle circular ring is 135 degrees, the overall thickness of the bevel angle circular ring is 1.25 mm, the outer diameter of the lower circular ring is 16 mm, the inner diameter of the lower circular ring is 13 mm, the overall thickness of the lower circular ring is 1 mm, and the lengths and the widths of the first rectangular teeth, the second rectangular teeth and the third rectangular teeth are all 3 mm. The utility model has the beneficial effects that the weight is reduced, and the good sealing performance can be ensured.

The invention discloses an anti-guide detonating device capable of being used for a small-caliber empennage stable shelling armor-piercing bullet. The anti-guide detonating device comprises a shell, a bullet head part used for being connected with a warhead, an empennage and a bullet support, and a booster grain, delay powder, an igniter cap and a firing device are sequentially arranged in the shell; the firing device can axially slide relative to the shell and is used for firing the fire cap, and a spring is arranged between the firing device and the fire cap; the safety pin spring is inserted into the percussion device and is used for carrying out safety limiting on the percussion device; the delay powder is used for igniting the booster grain in a delayed manner; the booster grain is used for generating axial explosive shock waves; and a plurality of circles are arranged in the axial direction of the shell at equal intervals, and each circle is provided with a plurality of circles, is in contact with the booster grain, and is provided with a shaped charge cover for radial jet flow. According to the detonating device, the comprehensive efficiency of the detonating device for the small-caliber empennage stable shelling armor-piercing bullet can be improved.

A projectile for an ammunition cartridge, with a penetrator core embedded in a casing, wherein the penetrator core has a tip optimized for penetrating a target, wherein, viewed in a projectile flight direction, the penetrator core has a greater cross-sectional load than the projectile, wherein the casing has at least partially an ogivoid contour, and wherein the casing is fragmentable into particle fragments upon impact of the projectile on a target, thereby releasing the penetrator core.

The invention discloses a low-cost high-tungsten-high-entropy alloy armor-piercing bullet core material, the chemical formula is Wx. (HEA) y, x and y respectively correspond to molar percentage values of W and HEA, and x: y = (1.5-9): 1; the preparation method comprises the following steps: 1, carrying out suspension smelting and vacuum gas atomization to obtain high-entropy alloy spherical powder; 2, mixing with tungsten powder to obtain mixed powder; 3, performing cold isostatic pressing to form a compact green body after pre-pressing molding; 4, performing pressureless sintering to obtain a compact sintered body; and 5, solid solution and rotary swaging treatment. The ratio of tungsten to the high-entropy alloy is controlled to control the formation of a hot shear zone, and the armor-piercing shell core material with high penetration capacity is obtained; based on powder mixing, cold isostatic pressing, pressureless sintering and solid solution and rotary swaging treatment processes, densification and strengthening of the material are achieved step by step, the high-tungsten armor-piercing bullet core material with high density and uniform component tissue is obtained, the comprehensive performance is improved, and the high-tungsten armor-piercing bullet core material is suitable for batch production.

The invention provides a high-strength composite material sabot and a preparation method thereof, and belongs to the technical field of shelling and armor-piercing bullets. The sabot comprises a main stress structure, the main stress structure comprises a plurality of laying layer sets, each laying layer set is formed by a tooth part layer and a middle layer attached to the tooth part layer, and the multiple laying layer sets are connected in a laying layer mode in the stress direction of the sabot; and the middle layer and the tooth part layer are made of unidirectional carbon fiber materials. The middle layer is attached to the tooth part layer, so that the middle layer can effectively enhance the strength of the tooth part layer, and the pressure bearing capacity of the tooth part structure is improved. When the sabot is stressed, the stress can be uniformly dispersed by the middle layer, so that the tooth part layer is prevented from being damaged due to overlarge local stress; layering connection is carried out between the layering groups along the stress direction of the sabot, and the interlayer direction of the sabot is parallel to the stress direction, so that the product is effectively prevented from cracking along the interlayer, and the strength of the sabot is improved.

The application is a kind of rock penetration depth prediction integrated learning method based on residual supervision enhancement. It includes collecting projectile physical parameters and rock mechanical parameters, forming the penetration characteristic parameter input set, calculating the residual of penetration depth prediction value and actual value, and constructing the penetration depth output set; the physical information neural network (PINN) is introduced, the joint loss function of data fitting term and physical constraint term is constructed, the fusion of data driving and physical priori knowledge is realized; the grey wolf optimization algorithm (GWO) is introduced to globally optimize the core hyperparameters and weight distribution mechanism of the Adaboost integrated learning model. The application breaks through the working condition application range limitation of the traditional method, has the physical interpretability and the generalization of data driving, and can be widely applied to the projectile penetration rock depth prediction in the fields of national defense engineering, geotechnical engineering, armor piercing bullet design and the like, and provides high-precision prediction basis for the scheme design and safety evaluation of penetration engineering.

The present invention relates to a method for producing a thick homogeneous target plate by rolling, comprising the following steps: smelting; die casting: casting molten steel to obtain a flat steel ingot or a plum blossom ingot with a unit weight of more than 20 tons; heating and blanking: heating the steel ingot, blanking and rolling it to an intermediate billet with a thickness of 350-600 mm; rolling: adopting single-stand rolling and full longitudinal rolling, the rolling process is divided into two stages: rough rolling and finishing rolling, the single-pass reduction rate of rough rolling is increased, the core microstructure and properties of the steel plate are improved, and the grains are fully refined; the starting rolling temperature of the finishing rolling is 830-950° C., the last pass is a leveling pass, and the reduction is ≤1 mm to control the plate shape; step five, quenching and tempering: obtaining a uniform tempered bainite structure through quenching and tempering; and step six, cutting: cutting the steel plate into the required size of the target plate. The target plate obtained according to the method has a low inclusion level and uniform performance. The finished product meets the requirements of high-level flaw detection standards such as GB / T2970-2016 Level I through ultrasonic testing, and is suitable for testing and accepting the penetration capability of armor-piercing projectiles.

The present invention relates to a jacketed projectile, in particular an armor-piercing projectile, for ammunition having in particular a caliber of less than 13 mm, said jacketed projectile comprising a core, a guide jacket receiving the core at the rear end, and a jacket tip receiving the core at the front end and connected, in particular press-fitted, to the guide jacket, wherein the core has a rear section which tapers, in particular conically, in the direction of the projectile rear and the peripheral surface of which is press-fitted to the guide jacket.

The invention relates to a penetrator (10) for a projectile (100), comprising a terminal ballistic main body (12) extending along a longitudinal axis (L) and a tail assembly (18), wherein the main body (12) has a front (14) at the front in the firing direction (S) and a rear (16) in the firing direction (S), wherein several grooves (22) are formed on the main body (12), each of which has an open end (26) at the rear in the firing direction (S) and whose groove profile extends along a groove longitudinal direction (NL) oriented parallel to the longitudinal axis (L), wherein the tail assembly (18) has several wings (20) which each have a counter-profile corresponding to, preferably complementary to, the groove profile on a wing edge (24) facing the main body (12), wherein the wings (20) each merge with the wing edge (24) facing the main body (12) into a the grooves (22) are inserted and fastened therein. One projectile (100) with such a penetrator (10) and one cartridged ammunition are specified.

The utility model discloses an armor-piercing bullet support structure, which comprises a plurality of support petals and a plurality of metal plates, the support petals are made of carbon fiber composite materials and are arranged in an arc shape, the plurality of support petals are combined in an annular shape, and the metal plates are bonded on two sides of each support petals. And ring grooves which are communicated with each other are formed in the inner sides of the supporting petals and the metal plates. The sabot has the advantages that the sabot structure is jointly formed by arranging the sabot petals made of the carbon fiber composite materials and matching the sabot petals with the metal plates, the structural strength and torsional rigidity of the sabot can be guaranteed, the weight of the sabot can be reduced, light weight of the sabot is achieved, and meanwhile good compression strength is kept.

The utility model discloses an ammunition pulling structure of saddle-shaped ammunition, which belongs to the field of ammunition pulling of empennage stable shelling armor-piercing ammunition and comprises an ammunition pulling machine, an ammunition body, an ammunition pulling base, a connector, an inner pulling sleeve and an outer sleeve. The bottom of the explosive charging cartridge case is movably connected with the bullet pulling base, a cavity is formed in the center of the inner pulling sleeve, the clamping base and the connecting body are connected in the cavity in a clamped mode, and the outer sleeve is movably connected to the outer portion of the inner pulling sleeve in a sleeved mode. When the ammunition body of the type is subjected to an ammunition pulling test, the ammunition body can be connected between the fixed base and the sliding body of the ammunition pulling machine, the structure of the ammunition pulling machine does not need to be improved, convenience can be improved, and cost cannot be increased too much. And the bullet and the connecting body are connected through the two semicircular inner pull sleeves, so that the operation is convenient.

The invention provides a bullet module based on a small unmanned aerial vehicle, the bullet module is mainly composed of four bullets, an external hanging device, a camera and an electric arc generator, the core part of the bullet module is that the four bullets and a single bullet are of a disposable and integrated totally-enclosed structure, gunpowder in the bullets is ignited by the electric arc, the bullets are shot forwards after ignition, and the bullets are shot backwards after being ignited by the electric arc generator. The gun body slides backwards to be separated from the module, the influence on flight of the unmanned aerial vehicle is small, and the gun body is provided with a small parachute and can be automatically opened to slowly land. The two bullets are the same in external dimension and comprise the shotgun bullets and the armor-piercing bullets, the shotgun bullets hit an aerial target, the armor-piercing bullets hit an overground target, and the shotgun bullets and the armor-piercing bullets can be used in a mixed mode when necessary. According to the technical scheme, the small unmanned aerial vehicle can mount bullets which are light, high in precision and good in controllability, and application of the small unmanned aerial vehicle in the aspects of military and armed police is greatly expanded.

A multi-stage torpedo capable of flying in the air comprises a first stage sailing in water, a second stage flying in the air, a third stage flying in the air and a torpedo head provided with a full-radar active seeker, a flight control system, an inertial navigation device and an armor-piercing bullet head explosive charge warhead. The second stage, the third stage and the like have the same structural form and power device, and the long-voyage supersonic marine combat equipment with the multi-stage power device and the armor-piercing bullet head explosive charge warhead is formed by utilizing a simple and effective connecting and separating mechanism.

The invention discloses a tubular modular ceramic composite armor which is formed by splicing a plurality of armor units, and each armor unit comprises an outer side impact buffer layer used for absorbing impact waves generated by explosion and absorbing vibration impact generated by a damage element in the penetration process, and an inner side impact buffer layer used for absorbing impact waves generated by explosion in the penetration process. The buffer layer between the tubular ceramics is used for ensuring the integrity of adjacent unpenetrated ceramic parts; the circumferential metal restraint layer is used for fixing the plurality of partitioned tubular ceramic parts, is in interference fit with the partitioned tubular ceramic parts, and provides prestress for the partitioned tubular ceramic parts to enhance the penetration resistance of the partitioned tubular ceramic parts, so that the broken ceramic blocks are located in the tubular armor, and the penetration resistance continues to be achieved; the plurality of spliced tubular ceramics are used for resisting penetration, abrasion and etching fractured elastic rods and deflection penetration ballistic paths of bullets, explosion-formed projectile EFP damage elements, energy-gathered rod flow JPC / jet flow JET damage elements or rod-type armor-piercing bullets, and reducing the surface density of the armor; and the hollow gap of the tubular ceramic plays a role of spaced armor.

The invention relates to the technical field of armor protection, and discloses a closed ceramic protection structure for resisting an armor-piercing bullet with the caliber of 30 mm. The closed ceramic protection structure comprises a constraint panel, a ceramic module and a metal frame. The restraining panel is made of a high-strength alloy material and transmits impact force uniformly; the ceramic module is made of high-purity silicon carbide ceramic and is fixed in the metal frame through liquid glue; the metal frame is integrally designed to limit scattering of ceramic fragments. The problems of ceramic fragment scattering and interlayer stripping of the ceramic composite armor in the penetration process of a large-diameter armor-piercing bullet can be effectively solved, the elasticity resistance and the multi-bullet capacity are remarkably improved, and meanwhile the lightweight requirement is met. Experiments show that the surface density of the structure is about 336-339 kg / m, the protection coefficient reaches 1.80 or above, and the structure is suitable for the field of protection of light tanks, ships and airplanes.

This invention relates to the field of high-density tungsten alloy materials, specifically to a high-density tungsten-refractory high-entropy alloy composite material and its preparation method. The specific preparation method includes the following steps: using an iron-nickel phase as the binder phase and tungsten powder and refractory high-entropy alloy powder as the reinforcing phases, the tungsten powder, refractory high-entropy alloy powder, iron powder, and nickel powder are ball-milled and then subjected to spark plasma sintering at 1100℃~1300℃. During the sintering process, an iron-nickel phase and a reinforcing phase are formed, thus preparing the high-density tungsten-refractory high-entropy alloy composite material. This invention uses spark plasma sintering technology, and by changing the composition of the multi-principal tungsten alloy and the sintering process parameters, prepares various high-density tungsten-refractory high-entropy alloy composite materials with different compositions, microstructures, and mechanical properties, solving the problem of easy passivation of the projectile head during penetration in armor-piercing projectile core materials prepared from existing high-density tungsten alloy materials.

The invention relates to a full metal jacket penetrator projectile (1), in particular having a caliber of less than 20 mm, in particular less than 12 mm or less than 9 mm, comprising a projectile jacket (3), a front penetration core (7), in particular a penetration core made of steel or hardened metal, which is provided in the projectile jacket (3), and a rear core (5) which is provided in the projectile jacket (3). The projectile is characterized in that the penetration core (7) has a recessed diameter (9), in particular a recessed diameter over the circumference, at the rear on the circumferential surface facing the projectile jacket (3) so that an annular space (11), in particular a circumferential annular space, is formed between the penetration core (7) and the projectile jacket (3), the rear core (5) protruding into the annular space.

The utility model relates to the technical field of armor protection, and discloses a bulletproof armor structure which comprises a crack arrest layer, a ceramic layer, a metal layer, a transition layer, a first supporting layer and a second supporting layer which are sequentially bonded from outside to inside in the bullet receiving direction. The crack arrest layer and the transition layer are both made of a fiber reinforced composite material; the first supporting layer and the second supporting layer are both fiber reinforced composite material laminated plates, and the thickness of the first supporting layer is larger than that of the second supporting layer. According to the bulletproof armor, the ceramic layer is restrained through the crack arrest layer, the ceramic layer is effectively supported through the metal layer, the transition layer, the first supporting layer and the second supporting layer, the defense capacity of the bulletproof armor for armor-piercing bullets is improved, and the bulletproof armor has the advantages of being good in armor-piercing bullet attack protection effect and capable of preventing ceramic fragments from splashing.

The present invention relates to a high-performance energetic ceramic composite material, belonging to the field of composite material technology. The high-performance energetic ceramic composite material is made from 30-60 parts by weight of ceramic powder, 20-50 parts by weight of a single high explosive, 10-20 parts by weight of a resin, 5-10 parts by weight of chopped fibers, and 1-5 parts by weight of an additive. The high-performance energetic ceramic composite material exhibits high mechanical properties and is wear-resistant. It does not explode under the action of small and medium-caliber projectiles and exhibits excellent protection against high-speed armor-piercing projectiles and jets. It can be used as the surface layer of composite armor for armored vehicles, ships, and aircraft, and can also be used as an intermediate interlayer material for composite armor.

The invention provides an anti-turbulent-flow unshelling and armor-piercing projectile support clamping flap aerodynamic configuration design method which comprises the steps that a helicopter platform composite flow field model is constructed, and the speed of a single clamping flap relative to helicopter composite airflow is obtained; simulating and calculating the in-air motion trail of the clamping flap of the shelling and armor-piercing bullet in the helicopter composite flow field; the lift coefficient, the resistance coefficient and the overturning torque coefficient of the clamping flap at different attack angles and speeds are substituted into the air movement track of the clamping flap of the shelling and armor-piercing bullet in the helicopter composite flow field, simulation calculation of the clamping flap trajectory is carried out, and then Monte Carlo simulation is carried out to generate a plurality of different clamping flap movement tracks; setting an objective function meeting a safe distance and carrying out iteration to obtain an optimal aerodynamic coefficient combination; the purpose of optimizing the aerodynamic characteristics of the clamping valve is achieved by modifying the geometric shape parameters of the clamping valve model and adjusting the aerodynamic coefficients of the clamping valve at different attack angles and speeds. The safety problem that the clamping petals collide with the platform due to the influence of complex turbulent flow can be solved.

The invention relates to a penetrator (10) for a projectile (100), in particular a sub-caliber kinetic energy projectile, wherein the penetrator (10) has a terminal-ballistic body (12) for attacking an armoured target, wherein a hole (16) is formed in the body (12), which extends along or parallel to the central longitudinal axis (14) of the body (12) entirely or along a predominant portion of the length of the body (12), wherein at least one exactly fitting insert part (22) is introduced into the hole (16), which has a through-opening (24) extending along or parallel to the central longitudinal axis (14') of the insert part (22) for guiding through an electrical or electronic line (26).

The application relates to the technical field of plasma-facing materials in a fusion reactor, and discloses a double-nano-phase doped ultrafine-grain tungsten alloy as well as a preparation method and application thereof, which comprises the following raw material components: chromium: 5.0wt-10.0wt%, yttrium: 0.5wt-5.0wt%, and tungsten: the balance; wherein the matrix phase particles are tungsten, the second phase particles are chromium and yttrium, the grain size of the matrix phase particles tungsten is in the ultrafine-grain range, and the grain size of the second phase particles is in the nanocrystalline range. The double-nano-phase doped ultrafine-grain tungsten alloy is prepared by the following method: (1) raw material ball milling mechanical alloying; (2) cold pressing forming; and (3) hot isostatic pressing sintering. The prepared double-nano-phase doped ultrafine-grain tungsten alloy has the advantages of high compactness, good thermal stability, grain size in the ultrafine-grain range, and the like, can meet the severe irradiation service environment in a nuclear fusion reactor, can be used on weapons and equipment such as armor-piercing bullets to improve the destruction capacity, and can be applied to the preparation of high-temperature-resistant parts.

The invention relates to the technical field of tungsten alloy materials, in particular to a high-density tungsten alloy which is composed of, by mass fraction, 90-97% of tungsten and the balance nickel and iron, the mass ratio of nickel to iron is (0.5-1.5): 1, and a preparation method of the high-density tungsten alloy is disclosed. According to the tungsten alloy material prepared through the preparation method, through multiple cycles of the two-stage heat treatment process, the alloy structure contains 20-40 [mu] m W crystal grains distributed in a bonding phase composed of a tungsten-nickel-iron solid solution, and also contains 10-800 nm ultra-fine W crystal grains which are uniformly distributed in the bonding phase; the nano-scale fine W crystal grains account for 2-15% of the volume percentage of the whole bonding phase, and due to the special organization structure, the alloy has the excellent performance of high strength, high toughness and the like, is particularly suitable for a new generation of armor-piercing bullet cores and has the excellent armor-piercing performance.

The utility model discloses a production device for a bullet support of an armor-piercing bullet, which comprises a winding shaft, the winding shaft comprises a core shaft and three shaping blocks, the shaping blocks are arranged around the core shaft, the outer wall of each shaping block is arc-shaped, and the surface of each shaping block is equidistantly provided with shaping grooves penetrating through the two sides of the shaping block; the compaction blocks are arranged on the outer sides of the shaping blocks and used for pressing the wound carbon fiber filaments into the shaping grooves in the surface of the winding shaft; the hot pressing die comprises an upper die and a lower die, and the sides, close to each other, of the upper die and the lower die are provided with semicircular die cavities which are buckled with each other. According to the utility model, the winding shaft, the compaction block and the hot-pressing mold are matched, so that the carbon fiber yarns can be wound on the winding shaft, then the compaction block is adopted to compact the carbon fiber yarns, and finally the hot-pressing mold is adopted to perform hot-pressing molding, so that three sabot clamping petals can be produced at one time each time, and the three sabot clamping petals can form a complete sabot; therefore, one-time production and machining of the sabot are achieved, and the production efficiency is improved.