Research On Launching And Recycling Technology Of A Small Marine Unmanned Aerial Vehicle

In recent years,drone technology has developed rapidly and has been widely used in military and civilian applications,especially because of its lightness,flexibility,and concealment.It is favored by the Navy and the Army.The safe and reliable launching and precise point recovery of the drone will directly affect the survivability,re-use capability and operational area adaptability of the UAV system in the battlefield.It is generally regarded as the most critical in the UAV battlefield application Technology node.Therefore,it is particularly important to study the technology related to the launch and recovery of drones.In this paper,a semi-integrated system is designed that can realize airborne launching and recycling for a small marine drone,which can be quickly moved,folded and stored,and randomly arranged.Firstly,the overall scheme and detailed structural design of the recycling system are carried out.The digital model is built based on the CATIA platform,and the motion process is analyzed and the process is tested without interference.Secondly,the change law of the resistance is clearly defined.According to the structure and working principle of the energy absorption system,the parameters are determined,and the Simulink component is used to establish the calculation model of the principle to solve the variation law of the throttle valve area.Then,based on the LMS Virtual.Lab Motion simulation platform,a full recovery system dynamics model is built to simulate the recycling process.The simulation results show that the dynamic model of the system is constructed accurately,and the simulation parameter curve satisfies the constraints of UAV overload,slider displacement and drag cable tension in the design index,and compares with the theoretical calculations to verify that the system has good performance.Recycling performance.Finally,the overall scheme of the UAV launching system is determined and the detailed structural design is carried out.The launching process is analyzed piece by piece.The virtual prototyping technology is used to verify that the system can meet the launching speed and distance requirements,and the rationality of the key parameters in the system is verified.In addition,the static analysis of the core components of the latching structure shows that the mechanism is safe and reliable,and its strength and stiffness fully meet the requirements of the launch structure.