Prof. Dr. Yaser ALAIWI2025-12-022025-12-02https://dspace.academy.edu.ly/handle/123456789/1839The results demonstrated that Epoxy SMC offered superior stiffness and experienced the least deformation under load, making it an optimal choice for applications where minimizing structural displacement is critical. On the other hand, Epoxy E-glass excelled in terms of safety, with the highest safety factor, ensuring that the structure can reliably endure extreme operational conditions. Although aluminum, the traditional material, performed adequately, it did not surpass the composite materials in any significant category. These findings underscore the potential benefits of utilizing composite materials over aluminum, particularly in UAV applications that demand structural efficiency, reduced weight, and improved safety. Epoxy SMC emerged as the best material for reducing displacement and strain on the wing, while Epoxy E-glass proved to be the safest and most reliable option. This provides valuable direction for future UAV designs, highlighting the advantages of advanced composite materials in enhancing both aerodynamic and structural performance.This study presents a comprehensive investigation into the structural and aerodynamic performance of unmanned aerial vehicle (UAV) wings constructed from both traditional and composite materials. Specifically, the research focuses on three material configurations: conventional aluminum, Epoxy Sheet Molding Compound (SMC) reinforced with 65% long glass fibers, and Epoxy E-glass composites. The primary objective is to enhance the aerodynamic efficiency and structural integrity of UAV wings through optimal material selection. A detailed computational analysis was conducted utilizing Computational Fluid Dynamics (CFD) to evaluate aerodynamic forces such as lift and drag across all material cases. This was followed by a one-way Fluid-Structure Interaction (FSI) analysis to assess the structural responses of the wings under realistic flight conditions. Additionally, modal analysis was performed to determine the natural frequencies and mode shapes of the wing structures, identifying critical vibrational modes that could impact flight stability.AERODYNAMIC OPTIMIZATION OF UAV WING