Abstract
Mesh reflector antennas are widely used in space tasks owing to their light weight,high surface accuracy,and large folding ratio.They are stowed during launch and then fully deployed in orbit to form a mesh reflector that trans-mits signals.Smooth deployment is essential for duty services;therefore,accurate and efficient dynamic mod-eling and analysis of the deployment process are essential.One major challenge is depicting time-varying resist-ance of the cable network and capturing the cable-truss coupling behavior during the deployment process.This paper proposes a general dynamic analysis methodology for cable-truss coupling.Considering the topological diversity and geometric nonlinearity,the cable network's equilibrium equation is derived,and an explicit expres-sion of the time-varying tension of the boundary cables,which provides the main resistance in truss deployment,is obtained.The deployment dynamic model is established,which considers the coupling effect between the soft cables and deployable truss.The effects of the antenna's driving modes and parameters on the dynamic deployment performance were investigated.A scaled prototype was manufactured,and the deployment experiment was con-ducted to verify the accuracy of the proposed modeling method.The proposed methodology is suitable for general cable antennas with arbitrary topologies and parameters,providing theoretical guidance for the dynamic perfor-mance evaluation of antenna driving schemes.
基金项目
National Key R&D Program of China(2023YFB3407103)
National Natural Science Foundation of China(52175242)
National Natural Science Foundation of China(52175027)
Young Elite Scientists Sponsorship Program by CAST(2022QNRC001)
万方数据