###### Abstract  
A new type of flexible web with a spatial symmetry structure is proposed to address the interception and acquisition of UAVs. It is different from the existing flexible web structure. According to the mechanical characteristics of the flexible web, the dynamic analysis model of the flexible web is established through theoretical deduction. Through finite element simulation calculation, the flexible webs of three different spatial symmetric structures are compared and analyzed. The internal force and air attitude of the three flexible webs are discussed. Among them, the new flexible web has a lag time of 0.162 s and a flight height of 11.624 m. The above simulation parameters are better than those of the other two symmetrical structures. It was proved that the new spatial symmetric flexible web has good traction and deployment performance. In addition, a ground verification test is designed and carried out. The web attitude and flight altitude parameters are compared with the simulation and test results. It is found that the simulation and experimental process of the new symmetric structure web are in good agreement, the synchronization of attitude change is good, and the flight altitude error of the two is controlled at about 5%. The feasibility and effectiveness of this method are proven and it can provide a reference for the research of flexible interception and acquisition of UAVs. s +
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the dynamic characteristics of the flexible web unfolding process are simulated by the finite element method. The simulation results effectively reflect the motion characteristics of large deformation and large displacement in capturing the target. In order to solve the \"black flying\" problem of UAVs, [PERSON] et al. [12] proposed a counter-UAV rope web capture method based on flexible rope web aerial deployment capture. On this basis, the dynamic analysis model of the whole process of capture is established, and the platform flight trajectory model and the rope web deployment model are compared with the test results. The feasibility of the dynamic model and simulation idea is verified. [PERSON] et al. [13] developed and designed an anti-UAV web system with low overload launch according to high- and low-pressure launch principles. Through the optimization and analysis of the capture performance and security parameters of the launch system, the overall performance of the anti-UAV web trapping system is improved, which provides theoretical guidance for the countermeasures and capture of the \"black fly\" UAV. In the study of target acquisition by flexible interception web, the target acquisition process can be divided into four processes: opening, collision, closing and completion. In the whole process of capture, [PERSON] [14] focused on analyzing the opening dynamic characteristics and parameter optimization of two kinds of flexible rope webs without rotation and with rotation, aiming at the capture and de-orbit problems of the flexible rope web system, and simultaneously studied the rigid-flexible coupling dynamics and de-orbit problems of the rope web and the target assembly after capture. Due to the advantages of large area coverage, being fast forming, having lightweight flexibility, and low costs, the application of the new space flexible web was extended from the initial capture of non-cooperative objects in space to applications such as slope protection webs [15] and parachutes [16]. The design concept and research methods of the new space flexible web were also used in the research. At present, most of the research work on space flexible webs is on the structure of rope webs. Under near-ground conditions, the aerodynamic environment is complex, and the spatial preservation of the tethered web is difficult to meet the requirements of combat UAVs. At the same time, unlike small drones, combat drones are larger in mass and volume, have a wider radius of operations, and are more destructive.