Research and Application Progress of Key Technologies for Composites Cryogenic Tanks
WU Zhanjun1 , CHEN Duo2 , LI Shichao1 , CUI Yunguang1 , LI Juanzi2 , YUAN Yuhuan2 , WANG Hongyu1 , LIU Xin1
（1. School of Aeronautics and Astronautics, Dalian University of Technology, Dalian 116024, China; 2. School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China）
Abstract：Using polymer matrix composites to make cryogenic propellant tank of launch vehicle can significantly improve the launch capability of launch vehicle and reduce the launch cost. Not only must polymer matrix composites used in these applications be very structurally efficient, they must also contain extremely volatile cryogenic propellants. These requirements put forward high requirements for materials selection, tank structure design and manufacturing process. In this paper, the current research status of polymer for cryogenic use and the application of advanced composites manufacturing technology in composites cryogenic tank are summarized. Moreover, future research direction has been proposed to promote the practical engineering application of composites cryogenic tanks.
2021, 
