Aerodynamic Characteristics and Dynamic Modeling of Long Endurance Unmanned Aerial Vehicle

Abstract

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. 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.