Conceptual Design of the Aluminum Reflector Antenna for DATE5

作     者：Yuan Qian Frank W. Kan Andrew T. Sarawit Zheng Lou Jing-Quan Cheng Hai-Ren Wang Ying-Xi Zuo Ji Yang 

作者机构：Purple Mountain Observatory Chinese Academy of Sciences Nanjing 210008 China Key Laboratory for Radio Astronomy Chinese Academy of Sciences Nanjing 210008 China Simpson Gumpertz and Heger Inc. Waltham MA 02453 USA 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2016年第16卷第8期

页      面：43-50页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：supported by the National Natural Science Foundation of China(NSFC,Grant Nos.11190014,11503093,11403109 and 11373073) the Natural Science Foundation of Jiangsu Province(Grant No.BK20141042) 

主　　题：methods analytical -- methods numerical -- telescopes -- techniques radar astronomy 

摘      要：DATE5, a 5 m telescope for terahertz exploration, was proposed for acquiring observations at Dome A, Antarctica. In order to observe the terahertz spectrum, it is necessary to maintain high surface accuracy in the the antenna when it is exposed to Antarctic weather conditions. Structural analysis shows that both machined aluminum and carbon fiber reinforced plastic （CFRP） panels can meet surface accuracy requirements. In this paper, one design concept based on aluminum panels is introduced. This includes panel layout, details on panel support, design of a CFRP backup structure, and detailed finite element analysis. Modal, gravity and thermal analysis are all performed and surface deformations of the main reflector are evaluated for all load cases. At the end of the paper, the manufacture of a prototype panel is also described. Based on these results, we found that using smaller aluminum reflector panels has the potential to meet the surface requirements in the harsh Dome A environment.