Novel Design Optimization of Tail Beam Structure in Unmanned Aerial Vehicles

This study delves into the complex process of designing an innovative tail beam structure for unmanned aerial vehicles (UAVs). The specific design constraints posed by the defined design parameters of a showcased UAV, such as a maximum takeoff weight of 55 pounds and an 18-foot wingspan, coupled with the requirement for a 100-foot runway for takeoff, pose unique challenges.Ensuring an optimal center of gravity position requires a meticulous evaluation of the tail's design. A stability incident highlighted a striking disparity: while the fuselage and wings incurred minor damage upon impact, the tail beam exhibited fractures. This observation underscores the critical importance of enhancing the tail beam structure through optimization. As a response, this study introduces pioneering design concepts grounded in thorough analyses.To enhance the structure, several design adjustments are being proposed. Firstly, considering an increase in the thickness of the tail beam. This approach aims to increase the load-bearing capacity of the tail beam and concurrently mitigate the risk of fractures. The thickness will be gauged through CAD simulations and subsequently furnished. Secondly, exploring the option of shortening the tail beam and relocating the main landing gear forward. This modification is intended to reduce the leverage effect on the tail beam during landing, effectively preempting potential structural failures – such adjustment inherently influences the UAV's center of gravity during takeoff and landing maneuvers. Additionally, the proposition of introducing a metal part at the connecting section will be will undergo testing. The final step is to address the changes in geometry - the study focuses on introducing additional connecting elements between the tail beam and other structural components. Given the current instability of the connection method, sometimes resulting in looseness during assembly, a novel CAD design will be developed and accompanied by detail calculation. These design enhancements collectively serve to fortify the tail beam structure, ensuring its resilience against encountered flight loads and forces. The research outcomes provide valuable insights for aircraft design, particularly in the realm of tail section optimization.In conclusion, this analysis employs a robust methodology that includes various analyses and simulations to address the design issues in the tail beam structure of UAVs. The proposed design adjustments are enhancing the structural integrity and stability of the UAV, which include variations in thickness, tail beam length, and connecting elements. The findings of this study contribute to the area of aircraft design by providing practical recommendations to optimize the tail section of UAVs.