7 results about "Railgun" patented technology

The invention discloses a material for an electromagnetic rail gun guide rail and a preparation method and application thereof, and belongs to the technical field of copper-based composite materials. The invention relates to a material for a guide rail of an electromagnetic rail gun. The material comprises a 5-20nm nano precipitated phase dispersed and distributed in a copper matrix; the MXene lamellas are continuously distributed on the grain boundary, and the nanometer MAX phase is distributed in the grain; and the nano precipitated phase, the MXene sheet layer and the nano MAX phase form a continuous reinforced network. The Cu-Ti-Be-Co alloy serves as a matrix, and unification of high strength and high conductivity is achieved through the synergistic effect of nanometer precipitated phase strengthening and MAX and MXene strengthening. The yield strength of the composite material reaches more than 700MPa and the conductivity is greater than or equal to 80% IACS (International Annealed Copper Standard) by regulating and controlling the interface combination of MAX and MXene with a matrix and the size and distribution of a nano precipitated phase, and the composite material is suitable for the fields of high-load electromagnetic guide rails, electromagnetic rail guns and the like.

The application discloses a preparation method of a copper-chromium-niobium-zirconium alloy for an electromagnetic railgun guide rail, and comprises the following steps: S1, the copper-chromium-niobium-zirconium alloy comprises Cr: 0.8-1.2%, Nb: 0.10-0.20%, Zr: 0.10-0.20%, and Cu: the balance, raw materials are prepared according to the element composition, then smelting is carried out, and a cylindrical ingot is cast; S2, the cylindrical ingot after the step S1 is subjected to homogenization annealing treatment; S3, the cylindrical ingot after the homogenization annealing treatment in the step S2 is subjected to hot extrusion; S4, the hot extruded profile after the step S3 is subjected to solid solution treatment; S5, the solid solution ingot after the step S4 is subjected to cold drawing / cold forging deformation treatment; S6, the semi-finished product after the step S5 is subjected to aging treatment, and the copper-chromium-niobium-zirconium alloy is obtained. Through the interaction between chromium, zirconium, niobium elements and the copper matrix, the strength and hardness of the alloy are greatly improved, and high-strength, high-conductivity and high-temperature resistance can be realized.

This invention discloses a simulation method, apparatus, equipment, and medium for an electromagnetic railgun. Compared to constant load parameter values, it employs a finite element method combined with equivalent circuit analysis. The rail is divided into N segments, and the armature is positioned at the end of the i-th segment. The current equivalent load parameters of the rail are updated based on the circuit parameters at each discrete time point, thereby approximating the true value of the equivalent load parameters segment by segment. The current equivalent load parameters are then substituted into the circuit and mechanical equations to calculate the discrete data when the armature is positioned at the end of the i-th segment. If i < N, let i = i + 1, and iterate the above simulation steps; if i = N, then fit all the calculated discrete data between the armature velocity and discrete time points to obtain continuous data between the armature velocity and time. It is evident that this invention corrects the equivalent load parameters whenever the armature moves a certain distance, thus simulating an electromagnetic railgun firing process that more closely approximates the real situation.

The invention discloses a nano ceramic reinforced metal-based coating and a preparation method and application thereof, and belongs to the technical field of electromagnetic rail gun guide rail materials, a first NiCr alloy is used as a base coat, a second NiCr alloy with the first TiN ceramic phase content gradually increased is used as a transition layer, and a third NiCr alloy with the second TiN ceramic phase uniformly distributed is used as a protective layer. And the nano-ceramic reinforced metal-based coating is obtained through magnetron sputtering. The second NiCr alloy with the first TiN ceramic phase content gradually increased is deposited on the surface of the base layer to serve as the transition layer, continuous transition of the thermal expansion coefficient, the elastic modulus and the hardness between the coating and the substrate is achieved, and the coating has high bonding strength. The NiCr alloy is low in hardness and wear resistance, and a high-hardness TiN nitride nano ceramic phase is introduced into the NiCr alloy, so that multiple characteristics of electric conduction, heat conduction, wear resistance and arc ablation resistance of the coating material are realized, and the service life of the guide rail is prolonged.

This invention proposes a switchable-stage electromagnetic railgun system, comprising: a charging circuit module that converts low-voltage DC power into high-voltage DC power to charge an energy storage module; an energy storage module including primary and secondary energy storage capacitors; a discharging module that releases excess energy; an energy conversion and regulation module that realizes energy conversion between the primary and secondary energy storage capacitors; a launch execution module that utilizes the energy in the energy storage module to achieve the launch function of the electromagnetic railgun; and a control and monitoring module that, in conjunction with an MCU (microcontroller unit), realizes the switching between different system states. This invention can control the energy of each stage of the launch circuit, has a wider adjustment range and higher precision, and at the same time, fully utilizes the secondary energy storage capacitors in single-stage launch, improving the charging and discharging speed.

The invention belongs to the technical field of electromagnetic emission, and discloses an enhanced electromagnetic track emission device and method based on parallel coils, the device comprises tracks and an armature, the tracks are arranged on two sides of the armature in parallel, the tracks and the armature are used for conducting current, one side of each track is provided with a coil, and the coils are independently connected with the tracks. The head end and the tail end of the coil are electrically connected with the output end of the power control unit, a magnetic field generated after the coil is powered on is used for enhancing the magnetic field of the track and the electromagnetic driving force of the armature, the chamber-out speed and the launching efficiency of the electromagnetic launching device are improved, and the electrical contact performance of the armature and the track is remarkably improved by restraining a damage mechanism of a low-speed section. The service life of the rail is prolonged, the reliability and launching times of the whole electromagnetic launching device are fundamentally improved, the armature abrasion loss and the instantaneous peak temperature of the rail are accurately predicted through the enhanced rail gun launching performance prediction model, and the performance of the electromagnetic rail launching device under different working conditions can be pre-judged in advance.

The invention discloses a novel automatic electromagnetic gun technology, which relates to the fields of military affairs, spaceflight and the like, and is characterized in that the novel automatic electromagnetic gun technology has two control modes through voice control and camera control, and mainly comprises a coil, a 70PT16BI one-way silicon controlled rectifier, three 450V and 1000mu F capacitors, a boosting module, an STM32 single chip microcomputer and a movable chassis; according to the device, a mechanical wheel leg platform serves as a base, a holder is carried above the mechanical wheel leg platform, an electromagnetic gun multi-stage acceleration module and a camera automatic tracking module are loaded, a battery is loaded on the left side of the holder to supply power to a chip, a boost-buck module is arranged on the right side of the holder, and a mechanical wheel leg control module is arranged behind the holder to control the direction and movement. The module 1 is arranged behind the buck-boost module and comprises an electromagnetic gun launching control module and a capacitor charging control module, the electromagnetic gun launching control module and the capacitor charging control module are located right below, a platform is carried right above the mechanical wheel leg control module and the module 1, and two batteries are assembled to charge a capacitor and supply power to mechanical wheel legs respectively. A common mechanical switch is replaced by the one-way silicon controlled rectifier, accurate control over a circuit is achieved, infrared ray assistance is achieved, the hitting precision and effect are improved, remote control can be achieved, and safety is improved.