A novel inflatable rings supported design and buoyancy-weight balance deformation analysis of stratosphere airships  

作　　者：Weinan GAO Ji ZHANG Teng MA Guochang LIN Yuanpeng LIU Changguo WANG Huifeng TAN 

机构地区：[1]Center for Composite Materials,Harbin Institute of Technology,Harbin 150001,China [2]National Key Laboratory of Science and Technology on Advanced Composites in Special Environments,Harbin Institute of Technology,Harbin 150080,China

出　　处：《Chinese Journal of Aeronautics》2022年第1期340-347,共8页中国航空学报（英文版）

基　　金：support from the National Natural Science Foundation of China(No.11872160).

摘　　要：Owing to the unique advantages in flight altitude,dwelling time and wide coverage area,stratospheric airships provide permanent monitoring and surveillance for both civil and military applications.Here we propose a semi-rigid stratosphere airship design with circumferential high-pressure inflatable rings and a longitudinal carbon fiber skeleton supported inside.We perform numerical simulations to analyze the deformation characteristics during the whole ascending and descending process.An equivalent internal gradient pressure model of helium is established based on the capsule shape and buoyancy-weight equilibrium conditions.The implicit dynamic method is used to deal with the large deformation of the airship capsule under a low negative pressure condition.Deformation and load-bearing performance of the airship capsule,inflatable ring,skeleton,and suspension line are obtained under different working conditions.The results show that the airship,supported with the inflatable rings and the suspension lines,effectively maintains the shape and ensures the stiffness during the ascending,dwelling,and descending stages,especially suffering from negative pressure.

关 键 词：Buoyancy-weight balance Large deformation Load-bearing performance Negative pressure Stratospheric airship 

分 类 号：V274[航空宇航科学与技术—飞行器设计]