几何形状对十字伞充气和滑翔性能的影响  

Effects of Geometry on the Inflation and Gliding Performance of Cruciform Parachutes

作　　者：黄云尧 武士轻[2,3] 张扬 HUANG Yunyao;WU Shiqing;ZHANG Yang(College of Astronautics,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Beijing Institute of Space Mechanics&Electricity,Beijing 100094,China;Laboratory of Aerospace Entry,Descent and Landing Technology,CASC,Beijing 100094,China)

机构地区：[1]南京航空航天大学航天学院,南京210016 [2]北京空间机电研究所,北京100094 [3]中国航天科技集团有限公司航天进入、减速与着陆技术实验室,北京100094

出　　处：《航天返回与遥感》2022年第5期48-58,共11页Spacecraft Recovery & Remote Sensing

基　　金：航天进入减速与着陆技术实验室开发基金(EDL19092128)。

摘　　要：为了研究几何形状对十字伞充气和滑翔性能的影响,文章采用LS-DYNA软件中的结构化任意拉格朗日-欧拉(S-ALE)流固耦合求解器,利用数值仿真对5种不同几何形状的十字伞进行了动态开伞过程模拟,得到了十字伞展开过程中不同时刻的伞衣形状,并对不同伞型的充气性能进行了对比分析。此外,对充气稳定后的十字伞,通过在其伞绳端施加恒定载荷使其具备滑翔能力,并对比分析了5种伞型的滑翔性能。数值结果表明,异形结构对十字伞的充气性能影响较大,但对滑翔性能的影响因伞型而异,十字伞的长宽比对充气和滑翔性均具有较大影响。In order to study the effect of geometry on the inflation and glide performance of cruciform parachute,the S-ALE(Structured Arbitrary Lagrange-Euler)fluid-structure interaction solver in LS-DYNA is employed.Cruciform parachutes with five different canopy shapes are taken and the corresponding dynamic opening process are simulated.The inflated shapes of the cruciform parachutes at different time instants are obtained and the inflation performances are compared.Furthermore,loads are applied to these stably inflated cruciform parachutes to test and compare the glide performance.Numerical results show that the abnormal structure has a great influence on the inflation performance but varies with the type of the parachute on the glide performance,whereas the aspect ratio impacts a lot on both of the inflation and glide performance.

关 键 词：充气性能 滑翔性能 十字伞 流固耦合 航天返回 

分 类 号：O35[理学—流体力学]