Equilibrium state of axially symmetric electric solar wind sail at arbitrary sail angles

作     者：Chonggang DU Zheng H.ZHU Changqing WANG Aijun LI Tuanjie LI Chonggang DU;Zheng H.ZHU;Changqing WANG;Aijun LI;Tuanjie LI

作者机构：School of Mechano-Electronic EngineeringXidian UniversityXi’an 710071China Department of Mechanical EngineeringYork UniversityOntario M3J 1P3Canada School of AutomationNorthwestern Polytechnical UniversityXi’an 710129China 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2024年第37卷第11期

页      面：232-241页

核心收录：

学科分类：08[工学] 0825[工学-航空宇航科学与技术] 

基　　金：supported by the National Natural Science Foundation of China(No.12302052) the Fundamental Research Funds for the Central Universities,China(No.XJSJ23128) the Discovery Grant of Natural Sciences and Engineering Research Council of Canada(No.RGPIN2018-05991) 

主　　题：Electric solar wind sail Extremely flexible system Multi-body dynamics Harmonic motion Maximum coning angle Equilibrium configuration Improved propulsion model High-fidelity modeling 

摘      要：This paper studies the equilibrium state and trajectory dynamics of an axially symmetric Electric solar wind sail(E-sail)at arbitrary sail *** E-sail is assumed operating in a heliocentric-ecliptic orbit at approximately one astronomic unit(au)from the Sun,and experiencing various dynamic disturbances like solar wind pressure,tether tension oscillations,and centrifugal *** study derives analytical expressions for the E-sail s equilibrium state and its maximal coning angle under small coning angle ***,an improved propulsion model is developed for the E-sail in this equilibrium *** assess the precision of these formulations,a high-fidelity E-sail dynamic model is constructed using the nodal position finite element method,where the tethers are modeled as two-noded tensile elements and the central spacecraft and remote units are simplified as lumped *** thorough parametric analyses,this paper conclusively demonstrates that the operation of the E-sail at the equilibrium state can be achieved in accordance with the derived analytical prediction of the equilibrium ***,the improved propulsion model is employed in trajectory analyses for a mission to reach the solar system s *** study provides valuable insights and findings and foundation for the practical application and further advancement of the E-sail technology.