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This paper investigates the aerodynamic characteristics and dynamic behavior of a long endurance unmanned aerial vehicle (UAV). The aerodynamic parameters were analyzed using simulation tools including Ansys Fluent, Missile Datcom, and OpenVSP. The results indicate that the UAV achieves optimal flight efficiency within the angle of attack range of 4°–6°, with stall occurring at 12°. Based on these findings, a longitudinal dynamic model was developed by the classical method with motion equations to evaluate the influence of aerodynamic and dynamic parameters on flight stability. The study demonstrates that the UAV maintains controllability and reliability under various flight conditions. The aerodynamic forces and moments are consistent well among different measurement methods. These findings provide practical implications for UAV design, manufacturing, and improvement, thereby contributing to the foundation for mastering and advancing modern aviation technology in the future.

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Aerodynamic Characteristics and Dynamic Modeling of Long Endurance Unmanned Aerial Vehicle

  • 会议论文

  • 发表日期：

    2026年

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  • Van Tien Bui,
  • Pham Van Duy,
  • Tran Van Nam,
  • Do Van Minh,
  • Tran The Hung,
  • Tran Dinh Thanh

摘要

This paper investigates the aerodynamic characteristics and dynamic behavior of a long endurance unmanned aerial vehicle (UAV). The aerodynamic parameters were analyzed using simulation tools including Ansys Fluent, Missile Datcom, and OpenVSP. The results indicate that the UAV achieves optimal flight efficiency within the angle of attack range of 4°–6°, with stall occurring at 12°. Based on these findings, a longitudinal dynamic model was developed by the classical method with motion equations to evaluate the influence of aerodynamic and dynamic parameters on flight stability. The study demonstrates that the UAV maintains controllability and reliability under various flight conditions. The aerodynamic forces and moments are consistent well among different measurement methods. These findings provide practical implications for UAV design, manufacturing, and improvement, thereby contributing to the foundation for mastering and advancing modern aviation technology in the future.