Numerical analysis of longitudinal stability for twin-boom UAVs with different tail configurations

Stability is essential for the safety of Unmanned Aerial Vehicles (UAVs) and holds paramount importance in their design. This study focuses on the longitudinal stability of twin-boom UAVs with inverted V-tail and inverted U-tail configurations. Computational fluid dynamics (CFD) method and longitudinal perturbed equations of motion were employed to comprehensively analyze the stability and flight performance of these UAVs. Results indicate that the inverted U-tail configuration exhibits 23.6% higher longitudinal static stability than the inverted V-tail under small perturbations. In Phugoid mode, the inverted U-tail UAV also demonstrates superior performance. These findings provide valuable insights for the design and optimization of UAV tail configurations.