69 results about "Combat simulation" patented technology

The invention relates to the field of data synchronization, in particular to a dynamic synchronization method and system for communication data of a combat simulation platform, and the method comprises the steps: obtaining communication data streams of a radar node and an electromagnetic interference node, generating a unified semantic tag, and detecting that the continuous packet loss times of the communication data streams exceed a preset packet loss time threshold value; predicting through Kalman filtering to obtain a predicted strike unit coordinate of the current packet loss, and generating a compensation data packet; before the compensation data packet is injected, the displacement deviation between the predicted strike unit coordinate and the follow-up actual received strike unit coordinate is compared, and if the displacement deviation exceeds a preset displacement fault-tolerant threshold value, a synchronous rollback mechanism is triggered; counting link loads through a sliding time window to obtain network real-time loads, and allocating bandwidth resources according to dynamic priority weights; the problem that real-time synchronization of radar detection data and electromagnetic interference signal parameters is abnormal in the interception cooperation process of a striking unit in a high-dynamic combat simulation scene is solved, and the data synchronization precision in simulation is effectively improved.

The invention discloses a simulation data management method based on a servitization integrated architecture, and relates to the technical field of combat simulation and deduction, and the method comprises the steps: building a servitization integrated data management architecture according to a data collection layer, a data storage layer, a data management layer, a data management layer and a data service layer; based on a service integrated data management architecture, data standardization is carried out, a data model is designed, data fusion preprocessing, data integration and data analysis are carried out on collected multi-source heterogeneous data according to a data standard and the data model, data fusion and warehousing management are completed, and meanwhile balance and unification of data security and sharing are guaranteed. According to the invention, a one-stop and all-around data management solution can be provided for simulation application.

The invention discloses an intelligent simulation experiment method and device. The method comprises the steps of obtaining task demand information; constructing an intelligent simulation experiment model; and processing the task demand information by using the intelligent simulation experiment model to obtain optimal experiment scheme data. According to the invention, an intelligent simulation experiment model composed of a data input agent, a simulation resource access agent, a basic scenario generation agent, an experiment scenario generation agent, an experiment operation control agent, an experiment data analysis agent and an experiment scheme recommendation agent is constructed; according to the intelligent combat simulation experiment system, software application in the form of an intelligent agent is used for replacing traditional combat simulation experiment software, a combat simulation experiment task AI intelligent agent is used for replacing manual operation, an intelligent combat simulation experiment is achieved, and the problems that a traditional combat simulation experiment is high in personnel requirement, large in energy consumption and few in innovative conclusion are solved.

The invention provides a system-level design and simulation integration method based on SysML and AFSim, and relates to the field of engineering system modeling and simulation. According to the system-level design and simulation integration method based on the SysML and the AFSim, a SysML architecture design module, a SysML and AFSim model association module and an AFSim model generation and simulation control module are included, and the SysML architecture design module establishes a SysML model, designs a system architecture, loads an AFSim built-in model library, uses an AFSim object for modeling and embeds an AFSim script. According to the method, the AFSim engineering script can be directly generated, and simulation operation can be directly carried out without installing a plug-in and modifying the engineering script in the AFSim. The AFSIM is a modularized, object-oriented, multi-field and multi-resolution modeling and simulation tool based on C + +, and supports combat simulation experiments of simulation levels such as engineering, battle, task, battle and the like.

The invention belongs to a situation display technology in the field of combat simulation, and discloses a situation display method, system, equipment and medium for combat simulation, and the method comprises the steps: receiving confrontation simulation data through multi-thread or asynchronous I / O operation, obtaining a key information set of the confrontation simulation data in real time, and storing the key information set in a distributed database; switching between a current mode and a target mode is carried out according to the mode switching request and the smooth switching logic, to-be-displayed adversarial simulation data in the target mode is loaded, and the to-be-displayed adversarial simulation data comprises a key information set updated in real time or a historical key information set loaded from a distributed database; and generating a global two-dimensional battlefield situation or a global three-dimensional battlefield situation through the confrontation simulation data to be displayed. Through the design of a multi-thread or asynchronous I / O technology and smooth switching logic, global and local battlefield situation display and other designs are carried out, so that the real-time performance, the flexibility and the visualization effect of situation display are greatly and effectively improved.

The present invention discloses an air defense combat effectiveness evaluation method based on ABMS and orthogonal testing, comprising the following steps: 1. establishing an air defense combat simulation model based on ABMS; 2. performing air defense combat effectiveness simulation based on orthogonal testing to obtain significant influencing factors of air defense combat; 3. performing air defense combat effectiveness simulation based on the significant influencing factors based on orthogonal testing; 4. obtaining optimal training data and worst-case training data for air defense combat effectiveness evaluation; 5. combining M′ sets of air defense combat effectiveness evaluation training sets, optimal training data, and worst-case training data to obtain an air defense combat effectiveness evaluation training set; 6. training a neural network evaluation model; and 7. performing air defense combat effectiveness evaluation in real scenarios based on the trained neural network evaluation model. The method of the present invention has simple steps, a reasonable design, is more practical, reduces the problem of large simulation workload and time consumption, and improves the accuracy of air defense combat effectiveness evaluation.

The application discloses a kind of based on layered multi-agent deep reinforcement learning's unmanned aerial vehicle cluster task planning algorithm and its evaluation method, belong to unmanned aerial vehicle technical field, solve the current unmanned aerial vehicle cluster collaborative task planning problem solving algorithm generally exists online solving efficiency is low, large amount of computation, poor stability, difficult to apply to complex dynamic scene etc.The application first establishes the cluster task allocation and flight path planning problem part Markov decision process model respectively;Second, a layered deep reinforcement learning framework based on multi-agent deep reinforcement learning is proposed, through coupled training, hierarchical solving method, the task allocation and flight path planning associated coupling problem is solved simultaneously;Also based on UE4 and Airsim build unmanned aerial vehicle cluster combat simulation environment, design evaluation index, the result shows that the application has good performance in cluster task planning, can effectively improve the intelligentization and actual combat level of cluster combat.

The application discloses a kind of combat simulation system breakpoint saving method and device, the method includes: defining combat simulation system breakpoint saving parameter information and breakpoint recovery parameter information;Define the breakpoint saving interface and breakpoint recovery interface of combat simulation system;User sends breakpoint saving request to combat simulation system;Combat simulation system receives the breakpoint saving request, calls breakpoint saving interface, carries out breakpoint saving processing according to breakpoint saving parameter information, obtains breakpoint storage parameter information;User sends breakpoint recovery request to combat simulation system;Combat simulation system receives breakpoint recovery request, calls breakpoint recovery interface according to breakpoint recovery parameter information and processes breakpoint recovery request, recovers combat simulation system.This method saves the situation of a moment in the form of breakpoint in the simulation process, can be recovered from breakpoint in later period Run, shorten the time of starting from the beginning, improve the efficiency and system stability of activity such as drill, debugging.

The present application belongs to the field of military command control and combat simulation, and relates to a local rapid reconstruction method for a killing network based on a complementary network strategy. The method acquires current state information of the killing network and detects failed nodes or edges, constructs a local repair area centered on the failed nodes, establishes a multi-objective optimization model in the repair area aiming to maximize task recovery benefits, minimize resource use costs and minimize task completion delays, solves to obtain a Pareto optimal solution set by using a TM-NSGA-III algorithm guided by a conversion matrix, and finally screens and executes a reconstruction scheme according to a battlefield situation. The present application reduces the search space by localized modeling, combines the conversion matrix to inherit the effective information of the original network, realizes rapid and high-quality reconstruction of the killing network, and improves the resilience and self-healing ability of the killing network in a dynamic battlefield environment.

The invention relates to the technical field of light weapon simulation training and education equipment, and discloses a modular training appliance construction method and device based on hardware standard parts, and the method comprises the following steps: S1, selecting the profile lengths of a front section module, a middle section module and a rear section module according to training requirements; s2, connecting the front section module, the middle section module and the rear section module according to a 180-degree straight line or a 75-degree oblique angle by using a corner connector, a connecting plate or a bolt; S3, clamping the electronic simulation sighting telescope into a T-shaped groove in the top of the middle section module, and tightening a side locking screw; and S4, installing a trigger module and a battery. Through structural abstraction design, structural deconstruction and recombination and military and civilian dual-track legal compliance design, the risk of touching an imitation gun affirmation standard is avoided. The military police edition keeps actual combat simulation, the civil edition realizes legal circulation through module recombination, multi-scene requirements of national defense science popularization, anti-terrorism teaching and the like are met, low cost, high efficiency and expandability are achieved, and the contradictory dilemma of industrial legality and practicability is solved.

The embodiment of the invention discloses a simulation method and device for a laser weapon, computer equipment and a storage medium, and the method comprises the steps: constructing a highly-simulated and controllable laser weapon combat simulation model, simulating the whole process from target recognition, irradiation duration decision, energy management to damage calculation, and improving the simulation efficiency of the laser weapon. And a dynamic interruption judgment and thermal effect cumulative attenuation mechanism based on target maneuvering is particularly introduced. The simulation can accurately reflect the physical characteristic that a laser weapon can take effect only by continuous irradiation, strictly follows the performance constraints of energy charging, heat dissipation and tracking of equipment, and reasonably simulates the irradiation uncertainty caused by target maneuvering in a complex battlefield environment and the accumulated influence of the irradiation uncertainty on the damage effect. And the actual combat suitability and the combat effectiveness evaluation accuracy of the laser weapon in simulation deduction are remarkably improved.

The invention discloses a multi-scenario operation method based on a single-node memory database and multi-Agent calculation, and belongs to the field of combat simulation, and the method comprises the following steps: 1, starting a scenario editing tool, operating a multi-scenario editing process, and creating a memory database; secondly, the scenario is edited, and scenario entity information is stored in the memory database; thirdly, storing a multi-scenario file; 4, starting a scenario operation monitoring tool, operating a plurality of scenario operation monitoring processes, and creating a memory database; 5, loading the scenario file, and creating a data blackboard by the memory database based on the scenario file; sixthly, advancing each set of simulation time according to the step length, and managing the data blackboard; seventhly, in the step length period, multi-Agent simulation calculation is executed, and a calculation result is updated to the data blackboard; and 8, judging whether the scenario is ended or not, and if not, turning to the step 6. According to the method, single-node multi-scenario parallel operation is realized by adopting a memory database technology and a multi-Agent technology, and the method has the advantages of simplicity and high efficiency.

The invention provides an extensible combat mission planning simulation method, system, device and medium, and relates to the technical field of computer combat simulation, the method comprises the following steps: defining a rule template in a combat mission planning system, configuring rule parameters in the rule template, and generating a specific first rule instance according to the configured parameter values; decomposing the first rule instance into a plurality of element components according to a specific function, and combining the element components according to different combat scenes to construct a second rule instance adapted to the specific combat scene; and performing logic configuration on the constructed second rule instance adapting to the specific combat scene by adopting a behavior modeling method of a behavior tree to obtain a combat rule adapting to the specific combat scene. According to the invention, by providing a convenient rule editing and expanding mode, the editability and expandability of the rule are realized, the adaptability of the system to diversified combat scenes is improved, and more powerful support is provided for combat command decisions.

This invention provides a method, system, device, and medium for generating military combat simulation schemes, belonging to the field of military combat simulation technology. The method includes: parsing combat tasks described in natural language according to a preset large language model to generate structured task data; automatically generating a problem description file conforming to the planning domain definition language specification based on the structured task data and a preset combat domain knowledge base; inputting the problem description file and a predefined domain definition file into a planning domain definition language planner for solving, outputting a feasible action sequence that satisfies all preset hard constraints; using the feasible action sequence as the initial strategy, executing and evaluating it in a simulation environment; iteratively optimizing the action sequence using a reinforcement learning algorithm based on the evaluation results, generating an optimized action sequence as the final simulation scheme. This method solves the problem of low feasibility and rule compliance in existing simulation schemes.

The present invention relates to the field of data synchronization, and specifically to a method and system for dynamically synchronizing communication data of a combat simulation platform. The method obtains the communication data streams of radar nodes and electromagnetic interference nodes and generates unified semantic tags. When the continuous packet loss count of the communication data stream is detected to exceed a preset packet loss count threshold, the predicted coordinates of the current packet loss strike unit are obtained through Kalman filtering and a compensation data packet is generated; before injecting the compensation data packet, the displacement deviation between the predicted coordinates of the strike unit and the subsequent actual received strike unit coordinates is compared. If the displacement deviation exceeds the preset displacement tolerance threshold, a synchronization rollback mechanism is triggered; the network real-time load is obtained by statistically analyzing the link load through a sliding time window, and bandwidth resources are allocated according to dynamic priority weights; it solves the problem of abnormal real-time synchronization of radar detection data and electromagnetic interference signal parameters during the interception and coordination process of strike units in a high-dynamic combat simulation scenario, and effectively improves the data synchronization accuracy in the simulation.

The invention provides an information transmission method and device for a distributed joint simulation system, and the method comprises the steps: determining a plurality of communication modes according to the communication demands of the distributed joint simulation system in different simulation scenes, and designing a corresponding communication protocol for each communication mode, generating a mapping relation among a simulation scene, a communication mode and a communication protocol in the simulation main node; establishing communication middleware, generating an object agent of the node in each simulation work node, establishing a unified communication protocol between the communication middleware and the object agents, and distributing the mapping relation to each object agent; and issuing the simulation scene or the communication mode determined by the user to the object agent through the communication middleware, so that the agent determines a corresponding communication protocol according to the mapping relationship, and converts the communication mode and the communication protocol of the node. According to the invention, the efficiency and reliability of information transmission are improved, and efficient and reliable information transmission support is provided for a joint combat simulation test.

The invention relates to the technical field of aviation safety and police service practical training evaluation, and discloses an air police new quality combat capacity civil aviation safety practical training evaluation method. A demand information acquisition module, a course supervision module, a teacher team module, a basic ability analysis module, an actual combat simulation ability analysis module, a comprehensive ability evaluation module, a feedback optimization module and a result solidification module are arranged in the model, and the demand information acquisition module performs multi-dimensional information acquisition; the course supervision module performs course quality and suitability supervision; the teacher team module executes selection of teacher teams and continuous ability improvement; the basic capability analysis module executes student basic quality evaluation; the actual combat simulation capability analysis module executes refined evaluation of scenario actual combat performance; the comprehensive ability evaluation module executes the end evaluation of the practical training effect of the trainee; the feedback optimization module outputs targeted optimization suggestions; and the achievement solidification module establishes a normalized graduate tracking return visit mechanism.

The application discloses a target tracking method and device under infrared active jamming based on probability data association, constructs a model set, determines target and infrared active jamming motion mode according to the model set, simulates an actual combat simulation scene; establishes a coalesced object measurement model and an infrared sensor error adaptive measurement model; estimates the actual size of the coalesced object, and pre-processes measurement information of the coalesced object measurement model and the infrared sensor error adaptive measurement model; data associates a plurality of measurement information, obtains a probability of measurement and track association; processes target motion model and the coalesced object measurement model and the infrared sensor error adaptive measurement model to predict target motion state, updates target motion state prediction; and obtains target state estimation and estimation error covariance. The application solves the problem of no accurate target measurement and measurement quality uncertainty when the target and the infrared active jamming coalesce, and improves the measurement accuracy.

Provided, according to one embodiment of the present application, are a fighting simulation system and an operation method thereof. The system may comprise: at least one lidar sensor unit which is installed in a play space of a fighting game and generates point cloud data; a motion tracking unit which generates tracking data for at least a portion of body parts of a first opponent and a second opponent on the basis of first point cloud data corresponding to the first opponent and second point cloud data corresponding to the second opponent, the opponents being positioned in the play space, and the point cloud data being generated through the lidar sensor unit; a strike determination unit which determines the delivery or not of a strike between the first opponent and the second opponent and the strength of the strike on the basis of the tracking data of the motion tracking unit; and a visualization unit which visualizes the delivery or not of the strike and the strength of the strike determined by the strike determination unit as a predetermined image, and superimposes and displays same on a real-time play image of the fighting game of the first opponent and the second opponent.

The present invention provides an information transmission method and apparatus for a distributed joint simulation system. The method includes: determining multiple communication modes according to the communication requirements of the distributed joint simulation system in different simulation scenarios, designing corresponding communication protocols for each communication mode respectively, and generating a mapping relationship among the simulation scenario, communication mode, and communication protocol in the simulation master node; constructing a communication middleware, generating an object proxy for each simulation worker node, establishing a unified communication protocol between the communication middleware and the object proxy, and distributing the mapping relationship to each object proxy; and sending the determined simulation scenario or communication mode by the user to the object proxy through the communication middleware, so that the proxy determines the corresponding communication protocol according to the mapping relationship, and converts the communication mode and communication protocol of this node. The present invention improves the efficiency and reliability of information transmission, and provides efficient and reliable information transmission support for joint combat simulation experiments.

This utility model discloses a team-based collaborative combat simulation robot, belonging to the field of robotics technology, including a perception system, a decision-making system, a motion system, a weapon system, and a communication system. The perception system acquires information about the robot's surrounding environment and its own state. The decision-making system formulates execution plans based on the environmental and state information, including action and confrontation decisions. The motion system executes actions based on action decisions. The weapon system performs confrontation tasks based on confrontation decisions. The communication system enables information exchange. This utility model achieves this by: accurately capturing information through the perception system to provide a basis for decision-making; efficiently generating plans through the decision-making system; flexibly executing actions through the motion system; accurately completing confrontation tasks through the weapon system; and ensuring information exchange through the communication system. The coordinated operation of these systems enables the robot to perform tasks effectively in complex scenarios, improving overall combat effectiveness and adaptability.

The invention relates to an individual shield tactical behavior simulation method for urban combat, and belongs to the technical field of combat simulation. Comprising the steps that whether a shielding task instruction is received or not is judged, if yes, task parameters in the shielding task instruction are analyzed, and a shielding task is started to be executed; checking the self state, traversing self-carried equipment, carrying out perception analysis on the surrounding battlefield environment, and selecting a shield mode; in a region range specified by a shield task, maneuvering is carried out according to a maneuvering rule, maneuvering is carried out to a shield point according to a shield behavior execution rule, firepower shield is carried out, in the maneuvering process from the shield point to a target point, a shield mode is adjusted according to surrounding battlefield situation dynamic information, and effective firepower shield is provided for the shield target. Shield maneuvering to a target point; and judging the self state and the shield target state, and reporting the shield task execution condition after the shield task is finished. The success rate of the shielding task and the adaptive capacity to battlefield changes can be effectively improved.

The invention relates to the technical field of virtual simulation, in particular to a virtual scene combat simulation system, which comprises an initial setting module used for analyzing the number of key task points in a preset distribution range corresponding to each task point so as to determine the distribution state and category of the task points, responding to a task dense area proportion corresponding to the loading setting condition so as to correspondingly set a scene loading strategy; the loading analysis module is used for responding to the average key coefficient corresponding to the strategy setting condition so as to correspondingly set a loading updating strategy; the upper limit setting module is used for responding to different loading updating strategies so as to correspondingly determine a setting mode of a loading upper limit value; the loading and updating module is used for determining an updating period and the setting mode of the loading priority coefficient of each task point according to the task execution mode of the target simulation personnel, the accuracy of updating the loaded content is improved, and then the fluency degree of the simulation combat process is improved.

The invention discloses a parallel simulation construction and operation method for complex scene multi-domain loose coupling segmentation, and belongs to the field of combat simulation, and the method comprises the following steps: 1, starting a scenario editing tool, editing a complex scene scenario file, dividing scenario entities into different combat domains based on combat domain loose coupling segmentation, enabling each combat domain only to have less interaction, and enabling each combat domain to have less interaction; storing the scenario file; 2, setting a multi-domain interaction message, defining a message structural body in a multi-domain interaction middleware MDI, and adding a message sending function and a message processing function in a related Agent; thirdly, starting a scenario operation monitoring tool, opening a complex scene scenario file, and distributing one or more operation nodes for each combat area; fourthly, complex scene scenario operation is started, synchronous operation is achieved based on multi-node and multi-domain simulation, and message transmission among multiple domains is transmitted through MDI. According to the invention, the simulation calculation amount and the communication requirement of each simulation node are reduced, so that the simulation realization of a multi-node complex scene has operability.

The application discloses an intelligent simulation experiment method and device, and the method comprises the following steps: obtaining task demand information; constructing an intelligent simulation experiment model; and processing the task demand information by using the intelligent simulation experiment model to obtain optimized experiment scheme data. The intelligent simulation experiment model is constructed by a data input intelligent agent, a simulation resource access intelligent agent, a basic scenario generation intelligent agent, an experiment scenario generation intelligent agent, an experiment operation control intelligent agent, an experiment data analysis intelligent agent and an experiment scheme recommendation intelligent agent. The software application in the form of the intelligent agent is used to replace the traditional combat simulation experiment software, and the combat simulation experiment task AI intelligent agent is used to replace manual operation, so that the intelligent combat simulation experiment is realized, and the problems of high personnel requirement, great energy consumption and few innovative conclusions in the traditional combat simulation experiment are solved.

The invention discloses a multi-core-oriented high-performance parallel discrete event simulation propulsion method, and relates to the technical field of combat simulation and deduction, and the method comprises the steps: constructing a parallel simulation engine, supporting parallel simulation operation through a time management service and an event management service, and determining parallel discrete event simulation logic based on the parallel simulation engine. Determining a processing flow of a logic process execution event; based on a parallel simulation engine, multi-core-oriented parallel simulation is executed, and the multi-core-oriented parallel simulation comprises a basic service, a parallel discrete event simulation service and an optimization expansion service. According to the method, discrete event simulation can be efficiently carried out in a multi-core processor environment, the simulation speed is improved, the sequence and consistency of event processing are ensured, meanwhile, load balancing is achieved, and overload of a single core is avoided.

The present invention provides an extensible combat mission planning simulation method, system, device and medium, which relates to the technical field of computer combat simulation. The method includes: defining a rule template in a combat mission planning system, configuring rule parameters in the rule template, and generating a specific first rule instance according to the configured parameter values; decomposing the first rule instance into multiple element components according to specific functions, and combining the element components according to different combat scenarios to construct a second rule instance adapted to a specific combat scenario; adopting a behavior modeling method of a behavior tree to perform logical configuration on the constructed second rule instance adapted to a specific combat scenario to obtain a combat rule adapted to a specific combat scenario. The present invention provides a convenient rule editing and extension method to achieve the editability and extensibility of rules, improve the adaptability of the system to diverse combat scenarios, and provide more powerful support for combat command decision-making.

This invention provides a training platform and method for air combat command and decision-making intelligent agents, comprising: a support layer: providing general hardware and software support for modeling, training, demonstration, and verification of command and decision-making intelligent agents, as well as system confrontation modeling and simulation; a resource layer: building a combat simulation model library based on a general simulation platform to quickly build a learning environment to meet different air combat command and decision-making intelligent agent training needs, and building an intelligent agent model library based on a general reinforcement learning platform to meet different command and decision-making intelligent agent training needs; and an application layer: decomposing actual command and decision-making problems according to the application needs of combat command and decision-making intelligence, and specifically integrating intelligent agent training application systems to carry out parallel training of command and decision-making intelligent agents and related technology verification applications. This invention flexibly and quickly constructs intelligent agents and their learning environments, and, guided by military business rules, combines multi-agent parallel training with large scenario samples to improve the training efficiency and generalization and expansion capabilities of command and decision-making intelligent agent models.

The application discloses a kind of actual combat simulation training system, it is related to training equipment technical field, the system is designed and is formed with the three-dimensional human body structure modeling of through positioning chip module and corresponding light weapon ballistic trajectory simulation together using realistic damage perception, a highly simulated training environment is formed, so that trainees are as if in the real battlefield, this realistic experience can greatly improve the concentration and input of participants, so as to enhance the training effect.In this realistic simulation environment, participants need to face various complex and unexpected situations, which helps them to exercise and improve their ability to deal with actual problems, so that participants can better master tactical deployment and combat skills, and improve their survival ability in real battlefield.The system is closer to actual combat requirements, and meets the requirements of improving the tactical action, command ability and combat awareness of participants.

The utility model discloses a single-soldier portable air defense missile actual combat simulation training device cylinder body which comprises a cylinder body, and the cylinder body comprises a launching part, a launching channel and a magazine. A front aiming clamp, a shoulder strap clamp and a rear aiming clamp are sleeved outside the launching part, a plurality of quick sockets are arranged below the launching part, and the quick sockets are at least used for being connected with a launching mechanism in a quick-release and plugging manner; a first launching mechanism clamp, a second launching mechanism clamp and the other shoulder strap clamp are connected to the outer portion of the launching channel in a sleeving mode; a magazine tail end structure is arranged at one end of the magazine. The cylinder body is one of key components, the front aiming clamp, the shoulder strap clamp, the rear aiming clamp, the first launching mechanism clamp and the second launching mechanism clamp are arranged on the cylinder body and can be closely matched with other components to launch the simulated bomb, the cylinder body is made of aluminum alloy, the parameters of the cylinder body are actually the same as those of the same size, weight and connector, and the simulation bomb can be launched. The device can replace real equipment to play a role in daily training.