Parameter Design and Deployment Performance Analysis of Torsion Bar in Folding Wing

With the rapid development of aerospace technology, folding wings are increasingly used in applications such as drones, carrier-based aircraft, and missiles, owing to their superior structural flexibility and spatial adaptability.However, the design of folding control surface connections and drive systems must meet complex requirements, including large angular displacements, high torque, and low stress, which significantly increases the design's difficulty and challenges. This study,based on engineering practice, this study establishes a structural parameter design method grounded in dynamic analysis, develops a targeted program to assess the impact of real environmental factors on the deployment performance of control surfaces, and offers practical guidelines for pre-twist angle design. Finally, a sensitivity analysis of torsion bar design parameters is conducted using the perturbation method to validate the impact of different parameters on deployment performance. The proposed parameter design method and sensitivity analysis not only provide a theoretical basis for optimising folding control surface torsion bar drive systems but also offer practical guidance for predicting and improving product performance. The research findings will contribute to enhancing the precision and reliability of folding control surface designs, promoting their application in the aerospace field, and have both academic and engineering significance.