1277results about "Ammunition fuzes" patented technology

A system for delivering ordinance is disclosed. The system includes a flight capable drone having a lift capacity suitable for carrying a munition, a fire control module in communication with the munition, and a handheld device in remote communication with the fire control module. At least one encrypted firing code generated by the fire control module is received by the handheld device and the munition is armed in accordance with at least the location of the drone.

An explosive downhole tool includes a housing having an upper housing part on one side of a window section and a lower housing part on an opposite side of the window section. An explosive charge is provided within the housing for cutting or expanding the wall of the tubular. The majority of outer surface of at least one of the upper and lower housing part in cross-section is rounded so as to be devoid of corners. The rounded surface eliminates the presence of sharp corners that may catch on restrictions or protrusions in a wellbore so that the downhole tool is more easily conveyable within a wellbore. Another explosive downhole tool includes fins extending from the housing. The fins have a height that decreases in a direction away from the housing. The shape of the fins enables the downhole tool to be more easily conveyable within the wellbore.

A safety arrangement for a wireless blasting system which includes a plurality of wireless detonator assemblies located at a blast zone wherein each route which provides access to the blast zone is monitored to detect removal of a wireless detonator assembly which is in an operative mode from the blast zone.

The invention relates to the technical field of circuit testing, and particularly discloses an online circuit testing method which comprises the following steps: starting communication control, issuing an electric signal to a detonator by a microprocessor through a communication circuit, releasing ignition capacitance energy by the detonator, presetting low and high voltage to measure the current of the detonator, adjusting a gun line voltage difference value, starting a current detection circuit, and closing an ignition and communication circuit. Analyzing and controlling branch states (normal, short circuit and open circuit) and reporting the states to a controller, considering the influence of distributed parameters to judge the short circuit state of the system, reporting circuit damage to a microprocessor based on damage signals, closing related enabling of the system at the same time, and forbidding detonating and discharging of detonators; comparing with a rated current to generate an analysis signal, calculating an early warning coefficient, calculating a high-risk coefficient based on the high-risk analysis signal, drawing a curve, dividing detonator risk levels, and taking corresponding measures for detonators with different risk levels.

The invention provides a system and a method for detecting and preventing early explosion of an electronic detonator chip. The method comprises the following steps: S1, detecting a current charging voltage; s2, selecting a reference voltage, comparing the reference voltage with the current charging voltage, and obtaining a comparison result based on a comparator; and S3, taking an early explosion prevention measure according to a comparison result. According to the invention, the multi-gear reference circuit and the comparator are used, high-precision detection of voltage change of the energy storage capacitor is realized, and the digital control logic circuit is matched to detect that the voltage of the energy storage capacitor drops abnormally and rapidly, so that an early explosion symptom is identified; by arranging the bypass switch, the energy storage capacitor is short-circuited to the ground when an early explosion symptom is recognized, so that energy of the energy storage capacitor is not released through the ignition element, early explosion is prevented, and good practicability is achieved.

A perforation gun assembly may include a single shaped charge holder, the shaped charge holder having a charge receiving structure and at least one projection extending from the charge receiving structure. A detonation cord and a detonator may be connected to the shaped charge holder. A top connector may be configured for connecting to a first base of the shaped charge holder and a bottom connector may be configured for connecting to a second based of the shaped charge holder. The perforation gun assembly may be positioned within an outer gun carrier of a perforation gun, and a tandem seal adapter may be positioned at least in part within the outer gun carrier.

A fuse-less ignition system for fireworks. An ignitor module is provided that is insertable into a firework and includes: a first end having an interface adapted to reside on an exterior surface of the firework for receiving a plug; a set of electrical contacts adapted to receive electricity from the plug; a heat element coupled to the electrical contacts and adapted to heat in response to received electricity; and a cavity adjacent to the heat element containing a pyrotechnic material, the pyrotechnic material adapted to ignite in response to a heating of the heat element.

The invention discloses electronic detonator spot welding defect detection equipment which comprises a bottom bearing plate, a telescopic fixing structure is arranged at the upper end of the bottom bearing plate, a circulating feeding structure is arranged in the telescopic fixing structure, and a testing structure is arranged at the upper end of the telescopic fixing structure. The telescopic fixing structure comprises side supporting plates symmetrically and fixedly arranged on the top face of the bottom bearing plate. According to the electronic detonator spot welding defect detection equipment provided by the invention, the telescopic fixing structure is arranged, and two groups of transverse electric push rods which are symmetrically arranged drive clamping plates at the upper ends to get close to each other, so that electronic detonator control plates with different sizes on the surface of the top plate can be fixed; and meanwhile, a longitudinal electric push rod is matched to drive a test meter and a test needle head on the top to descend to be in contact with a welding spot on the surface of the control panel, so that whether the welding spot has pseudo soldering or not can be detected, compared with an existing detection device, the detection efficiency of the control panel can be effectively improved, and meanwhile higher adaptability is achieved for control panels of different sizes.

The utility model relates to an explosion activation device, emergency ejection seat and aircraft, wherein the explosion activation device comprises a conductive shell and a power supply, the interior of the conductive shell is slidably connected with an actuator, the interior of the actuator is provided with a plunger cavity, the interior of the plunger cavity is slidably connected with a plunger, the actuator is slidably connected with a limiting ball, and the limiting ball is connected with the power supply. The actuator and the plunger are clamped or separated through a limiting ball, an insulating base is arranged on the conductive shell, an electric contact point is arranged on the insulating base, one end, close to the electric contact point, of the plunger is in contact with or separated from the electric contact point, and the conductive shell, the actuator, the limiting ball and the plunger are all conductive parts. The anode of the power supply is connected with the conductive shell, and the cathode of the power supply is connected with the electric contact. According to the explosion activation device, the activation function can be achieved only by pulling the actuator to change the connection state between the actuator and the plunger, and the structure of the explosion activation device is simplified.

The invention discloses a segmented self-destruction rain enhancement and hail suppression rocket controlled by a time schedule controller, and relates to the technical field of artificial rain enhancement and hail suppression rockets. The device comprises a catalysis bin assembly, an engine assembly and an empennage assembly, and the catalysis bin assembly, the engine assembly and the empennage assembly are connected through reducing sleeve assemblies. An explosion self-destruction device is adopted as a safe landing device, a segmented self-destruction device is arranged in a rocket body engine and a tail segment assembly in advance, a time schedule controller outputs an ignition signal according to binding information, an empennage assembly, an engine assembly and a catalytic bin assembly are exploded into floccules not larger than 100 g and fall onto the ground, self-destruction of all the assemblies is reliable, and the safety of landing is guaranteed. The rocket body wreckage preventing device can effectively reduce damage of rocket body wreckage to personnel, buildings, farmlands, livestock and the like, any one of the ignition loops of the time schedule controller does not affect performance of other loops during working, fire spurting is avoided, space is saved, and the function is reliable.

The invention discloses an electronic detonator detonation dynamic regulation and control method and system based on performance monitoring, and relates to the technical field of electronic detonators. The method comprises the following steps: acquiring environmental stress parameters and detonator performance parameters in real time, and performing time sequence analysis to realize dynamic feature extraction; identifying an abnormal fluctuation time period, analyzing and extracting fluctuation characteristics, and quantifying the interaction influence of the environment and performance parameters; a performance degradation model is constructed based on voltage / resistance time sequence data, the degradation rate is dynamically calculated in combination with batch characteristics and acceleration test data, and the detonation failure probability is simulated and predicted; a detonation parameter safety interval is generated through reliability level mapping, and optimization design of trigger parameters and energy is achieved through timing compensation, discreteness grouping, network topology optimization and energy dynamic adjustment strategies; a closed-loop dynamic regulation and control strategy is formed, and high-reliability detonation of the electronic detonator under complex working conditions is guaranteed. According to the method, multi-dimensional data analysis and an intelligent optimization algorithm are fused, and the safety of blasting engineering and the system stability are effectively improved.

A layered thermite composite includes alternating layers of metal oxide and reducing metal deposited upon a substrate. A fuzzy interface layer between each metal oxide layer and reducing metal layer includes reducing metal, reducing metal oxide, and metal oxide at least partially intermixed therein. The fuzzy interface layer forms while moving between chambers in a multi-chamber deposition process which minimizes exposure of the reducing metal to oxygen while moving between chambers. The fuzzy interface layer is not expected to grow in thickness after deposition. The combination of the relative thinness of the fuzzy interface layer as well as the presence of reactants as well as reducing metal oxide maintains the sensitivity of the layered thermit structure to mechanical ignition if the structure is used within a primer.

The utility model discloses a detonating control device and a detonating control system for an underwater electronic detonator, and belongs to the technical field of detonating control of initiating explosive devices. The underwater electronic detonator detonation control device comprises a lower half shell, a first hollow cavity is formed in the lower half shell, the upper side of the first hollow cavity is open to form a first open end, and the outer wall of the peripheral side of the first open end is connected with a first annular protrusion; a second hollow cavity is formed in the upper half shell, the lower side of the second hollow cavity is open to form a second open end, the outer wall of the peripheral side of the second open end is connected with a second annular protrusion, and the second hollow cavity communicates with the first hollow cavity to form a mounting cavity; the detonation control unit is arranged in the mounting cavity, and the detonation control unit is used for being in communication connection with the electronic detonator; the sealing assembly is mounted between the annular bulge I and the annular bulge II; and the locking mechanism is connected between the lower half shell and the upper half shell. The detonation control device of the underwater electronic detonator is favorable for improving the reliability of underwater blasting.

The invention discloses a typical warhead-fuze collaborative weapon system, and belongs to the technical field of ammunition fuze, the typical warhead-fuze collaborative weapon system comprises a shell, a fuze module, a guidance cabin, a warhead, a detonation module and a fuel cabin are arranged in the shell, the fuze module is located at one end of the shell, the fuel cabin is located at the other end of the shell, and the warhead is located in the middle of the shell; the guidance cabin is located between the fuze module and the warhead, and the detonation module is located between the warhead and the fuel cabin. According to the typical warhead-fuze collaborative weapon system, the collaborative performance is optimized, and efficient collaboration among the warhead, the fuze module and the explosion tube is achieved through innovative module arrangement and connection design; the environmental adaptability is improved, structural strengthening and adaptability design are carried out on key modules of the system for high-altitude, high-temperature and other complex combat environments, and reliable operation of the system is ensured; and through the heat insulation design and multi-layer protection, the isolation performance of the warhead and the fuel cabin is improved, and accidental explosion caused by heat transfer is prevented.

The invention provides an electronic detonator delay calibration method, which comprises the following steps of: starting a first timer based on a high-speed clock, and setting a first calibration time threshold value; synchronously starting a second timer based on a low-speed clock in the chip, and setting a second calibration time threshold value which is greater than the first calibration time threshold value; when the first timer reaches a first calibration time threshold value, stopping the second timer and acquiring an actual count value of the second timer; calculating a theoretical count value corresponding to the first calibration time threshold value; generating a calibration factor based on the ratio of the actual count value to the theoretical count value; dynamically correcting the low-speed clock count value corresponding to the target delay time according to the calibration factor; configuring a second timer by adopting the corrected count value, and executing delay control; by means of high precision of the high-speed clock, the low-speed clock is calibrated before detonation, so that the low-speed clock is more accurate in the current environment, the standard that the delay error is smaller than 1% is achieved, and it is guaranteed that the detonation time of the electronic detonator is accurate and errorless.

A method of assembling a primer for a firearm cartridge including the steps of providing a primer cup including a cup base with a circular sidewall extending perpendicularly upward from a perimeter edge thereof, to a rim. Providing an anvil having an anvil base and pressing the anvil into the primer cup with the anvil base spaced apart from the cup base to form a primer gap therebetween. Providing a slurry including a primer composition and a carrier liquid and introducing a controlled volume of the slurry into the primer cup over the anvil. Drying the slurry in the primer cup to remove the liquid carrier and leave a deposit of the primer composition in the primer gap.

The invention discloses a split type wireless electronic detonator initiation system. The system comprises an inner box body, wherein the inner box body comprises a wireless exploder and one or more split type wireless electronic detonators; the wireless exploder is composed of a wireless module and an exploder application program used for controlling the wireless module, the split wireless electronic detonator comprises a wireless receiver and an ignition module, the wireless receiver is in wired connection with the ignition module, and the wireless receiver is in wireless communication connection with the wireless module of the wireless exploder. According to the split type wireless electronic detonator initiation system, operation is more convenient and construction is accelerated in a brand new mode. A wireless mode is used, and meanwhile unmanned mechanical operation in the future becomes possible.

An accelerometer including: a housing; a proof mass; a piezoelectric material; a support member for holding the proof mass a predetermined distance from the piezoelectric material, the proof mass being rotatably disposed relative to the housing and having a center of gravity offset from an axis of rotation of the support member; a first biasing material for biasing the proof mass towards the piezoelectric material and against the support member; and a second biasing material for biasing the proof mass at the predetermined distance from the piezoelectric material. When a level of acceleration of the proof mass is less than or equal to an acceleration level that is to be measured, the second biasing material is configured to force the support member to rotate to disengage the proof-mass and the first biasing material to move the proof-mass to contact the piezoelectric material.

A projectile with a safe and arming device includes a tunable setback arming mechanism with an arming slider constrained and guided within a slider frame. The arming slider and slider frame cooperating to have a first safe position, a second intermediate position, and a third armed position. Components, such as the arming slider are manufactured by electronic discharge machining (EDM) to provide preforms on a work piece that can be further processed and ultimately assembled into tunable setback arming mechanisms. Various desired operating characteristics of the setback arming mechanism may be provided by adjusting and / or selecting specific parameters in the arming slider and readily adjusting same through machining and heat treating.

A downhole system for conveying an explosive tool within a wellbore and reducing damage to other tools of the downhole system. The downhole system comprises a downhole tool string configured for conveyance within a wellbore, wherein the downhole tool string comprises upper tools, a lower tool comprising an explosive charge, and a sub between the upper tools and the lower tool. The sub is configured to attenuate a shock wave caused by the explosive charge when detonated to thereby reduce damage to the upper tools caused by the shock wave. The sub comprises an axial bore and a plurality of radial bores extending between the axial bore and a space external to the sub.

Various well-perforating systems and methods are disclosed incorporating a self-shunting detonator. The detonator may include an electrically-conductive detonator body. A resistor initiator inside the detonator body includes first and second leads. A grounding element inside the detonator body couples the detonator body to the first lead. An electrically-conductive clip coupled to the second lead includes an arm biased to electrical contact with an external surface of the detonator body to shunt the detonator. The arm is moveable away from the detonator body to un-shunt the detonator, such as automatically in response to insertion into a detonator housing.

The invention relates to the technical field of circuit monitoring, and particularly discloses a monitoring system of a control circuit, which comprises an input protection unit, an energy storage unit, a bridge wire unit, a constant-voltage switch circuit, a current-limiting resistor, a capacitor rectifier bridge, an input protection unit, an energy storage unit, an output protection unit and a control unit, the PNP, the NPN triode and the resistor form a bridge wire unit and a constant voltage switch unit, the monitoring unit monitors voltages at two ends of the polar capacitor in real time until starting voltages of the bridge wire unit and the constant voltage switch unit are met, the temperature of a bridge wire FUSE is monitored based on the starting voltages, the proximity ratio of the temperature of the bridge wire to a fusing safety threshold value is calculated, and the fusing safety threshold value is calculated according to comparison between the proximity ratio and the fusing threshold value. The method comprises the steps of obtaining a fusing safety or early-warning signal according to the fusing safety or early-warning signal, predicting and analyzing the fusing time of the bridge wire FUSE based on the fusing early-warning signal, obtaining the fusing prediction time of the bridge wire, comparing the fusing prediction time with the fusing safety time, and judging the safety state of the bridge wire FUSE.

A detonator includes a substrate, a controller mounted to the substrate, and a sensor coupled to the controller to measure a temperature, pressure, acceleration or other environmental parameter of the detonator. The controller is configured to transmit the measured environmental parameter from the detonator to a remote master controller, execute an action in response to a value of the measured environmental parameter, and / or prevent or modify at least one detonator function in response to the value of the measured environmental parameter.

A communications interconnect between the countermeasure controller of a countermeasure system and the dispenser containing the countermeasure payloads therein. Additionally, the present disclosure provides a power connection between the countermeasure controller and the countermeasure dispenser to deliver power to the countermeasure payloads, including smart payloads, utilizing existing vehicle wiring harnesses and wiring kits.

The invention discloses a multi-stage damage warhead and a design method thereof, and belongs to the technical field of military equipment.The multi-stage damage warhead comprises a fuze system, a multi-stage damage warhead module is arranged on one side of the fuze system, the multi-stage damage warhead module comprises a shell, and a first-stage damage unit, a second-stage damage unit and a third-stage damage unit are arranged in the shell; the second-level damage unit is located between the first-level damage unit and the third-level damage unit, explosion-proof layers are arranged between the first-level damage unit and the second-level damage unit and between the second-level damage unit and the third-level damage unit, and first detonating devices are arranged in the centers of the explosion-proof layers. According to the multi-stage damage warhead, the design method thereof and the fuze system, staged triggering of the multi-stage damage module can be achieved, it is ensured that the multi-stage damage module is started according to a preset plan, the multi-stage damage module can select the corresponding damage unit to attack according to different characteristics of a target, and the multi-stage damage warhead is high in safety. Therefore, the hard target and the soft target can be efficiently damaged.

The invention relates to the technical field of electronic exploder control, in particular to an anti-electromagnetic interference dynamic threshold control system and method for an electronic exploder, and aims to solve the problem that the electronic exploder is easily interfered in a complex electromagnetic environment to cause false triggering or missing detection. According to the system and the method, surrounding electromagnetic signals are acquired, time domain, frequency domain, waveform distortion and interference source features are extracted and fused to generate clustering feature vectors, and the signals are divided into pure interference, pure detonation control and superposed signals by using an improved K-means algorithm; and based on the clustering result and the interference intensity, adjusting an identification threshold in real time through a staged dynamic threshold adjustment formula, introducing a multi-dimensional reference factor of historical interference data after the interference is weakened, and stably recovering the threshold to a normal level by adopting a staged adaptive recovery mechanism. According to the system and the method, the anti-interference capability of the electronic detonator in a complex electromagnetic environment can be remarkably improved, and the safety and the accuracy of detonation operation are ensured.

The invention discloses a special aluminum fixing capacitor for an electronic detonator with ultralow electric leakage characteristic and a preparation method thereof, the capacitor comprises a positive foil electrode, a negative foil electrode, an aluminum foil or an aluminum alloy foil coated with an oxide film on the surface, electrolytic paper and an electrolyte, and the electrolyte can be a phosphate-based electrolyte, a borate-based electrolyte or an organic electrolyte containing high-conductivity salt, and an additive, the preparation method comprises the following steps: slitting positive and negative foils and electrolytic paper, winding the positive and negative foils and the electrolytic paper to form a concentric circle, forming a repair oxide film, dipping a conductive polymer material, baking and polymerizing to form a conductive film, injecting a pouring sealant into an aluminum shell, and carrying out heat treatment to obtain the conductive aluminum shell. The formation liquid is ammonium dihydrogen phosphate, ammonium adipate or boric acid aqueous solution, and the pouring sealant is epoxy resin or polyurethane; the capacitor has an ultra-low electric leakage characteristic, is suitable for being used as a power supply energy storage element in an electronic detonator system, stabilizes power supply output and inhibits an electric leakage phenomenon.

The utility model relates to the technical field of electronic detonator processing equipment, and discloses a leg wire cutting device for electronic detonator processing, which comprises a workbench, a leg wire conveying mechanism, a leg wire cutting mechanism and a leg wire tightening mechanism, the leg wire conveying mechanism, the leg wire cutting mechanism and the leg wire tightening mechanism are respectively arranged on the workbench, and a leg wire is conveyed by the leg wire conveying mechanism and the leg wire tightening mechanism in sequence and is cut by the leg wire cutting mechanism under the condition that the leg wire is tightened by the leg wire tightening mechanism. Compared with the prior art, the leg wire cutting device has the advantages that the leg wire can be tightened in the conveying process through cooperation of the leg wire conveying mechanism and the leg wire tightening mechanism, so that when the leg wire cutting device is matched with the leg wire cutting mechanism for cutting, the situation that the cutting precision is affected due to deviation, distortion or bending of the leg wire is not prone to occurring, and the leg wire can be efficiently cut.

The invention discloses a low-vibration multi-point delay digital twin drive intelligent electronic detonator blasting control method, and relates to the technical field of blasting vibration control, and the method comprises the steps: 1, constructing a frequency weight curve and a weighted energy index, and unifying a time scale and three-component measurement; 2, establishing a virtual field by using a single-hole signature library, instrument transfer function deconvolution and a boundary correction propagation operator; step 3, performing delay optimization in combination with a timing characteristic function and a partition phase, and setting a keyhole read-only and weighted threshold; fourthly, programming backward reading is conducted, gating is conducted through a consistency index and an admission ratio, only one-time fine adjustment is conducted on the non-key hole on line according to an expected energy track and deviation statistics, and block assimilation updating is conducted later. According to the scheme, quantitative suppression of sensitive frequency band energy is achieved, and construction efficiency and traceability are kept. Through unified parameter and data object through identification, database building, optimization, execution and feedback, the scheme consistency is improved, the trial explosion frequency is reduced, supervision and acceptance are facilitated, and redisk tracing is supported.

The invention provides a safety analysis method for an ammunition electronic safety system, which comprises the following steps of: dividing a working process of the electronic safety system into a first stage, namely a stage before a launching period, a second stage, namely a stage in the launching period and a third stage, namely a stage after the launching period and within a safety distance, the method comprises the following steps: determining top events for a first stage, a second stage and a third stage of an electronic safety system, analyzing historical fault data of the electronic safety system, and establishing a basic event tree and a corresponding failure model for the first stage, the second stage and the third stage; according to the working process of the electronic safety system, sub-trees are continuously established for the basic event trees of the first stage, the second stage and the third stage until each event forming the sub-trees is a bottom event, establishment of a final event tree is completed, the occurrence probability of each bottom event is obtained, the occurrence probability of a top event is calculated, and the occurrence probability of the top event is calculated. Safety analysis of the electronic safety system in a complex fault mode can be completed.