海浪情形下舱囊组合体着水冲击特性研究  

Research on the Impact Characteristics of Re-entry Capsule with Airbags under Wave Conditions

作　　者：韩佳朋 武士轻 张扬[1,2] 雷江利[2,3] 黄伟 竺梅芳 HAN Jiapeng;WU Shiqing;ZHANG Yang;LEI Jiangli;HUANG Wei;ZHU Meifang(College of Astronautics,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Laboratory of Aerospace Entry,Descent and Landing Technology,CASC,Beijing 100094,China;Beijing Institute of Space Mechanics&Electricity,Beijing 100094,China)

机构地区：[1]南京航空航天大学航天学院,南京210016 [2]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 [3]北京空间机电研究所,北京100094

出　　处：《航天返回与遥感》2024年第5期1-12,共12页Spacecraft Recovery & Remote Sensing

摘　　要：为了研究舱囊组合体在海浪情形下的着水冲击特性,文章基于某型返回舱和气囊的组合模型,利用LS-DYNA软件中的流固耦合算法、气囊仿真算法以及造波算法建立返回舱-气囊-波浪-空气的多介质耦合模型,模拟海浪情形下舱囊组合体的着水过程,并讨论不同入水角度和不同入水位置对返回舱过载、气囊内压以及气囊受力的影响。经分析可知,舱囊组合体入水角度越大,过载越小,随着入水角度的增大,气囊的内压峰值呈减小趋势。此外,舱囊组合体在海浪波峰处着水的过载明显小于在波谷处着水的过载,气囊系统的受力分布表现出明显差异。研究结果可为海上回收系统的设计和入水冲击试验提供技术参考。In order to study the water impact characteristics of the re-entry capsule with airbags under wave conditions,based on a combination model of a certain type of re-entry capsule and airbags,a multi-media coupling model of re-entry capsule-air bag-wave-air is established by using the fluid-structure coupling algorithm,air bag simulation algorithm and wave making algorithm in LS-DYNA software to simulate the water landing process of the re-entry capsule with airbags under wave conditions.The effects of different entry angles and positions on the overload of re-entry capsule,the internal pressure of the airbags and the force of the airbags are discussed.The analysis shows that the larger the entry angle of the re-entry capsule with airbags,the smaller the overload.With the increase of the entry angle,the peak internal pressure of the airbags decreases.In addition,the water overload of the re-entry capsule with airbags at the crest of the wave is obviously less than that at the trough of the wave,and the force distribution of the airbag system shows obvious differences.The research results are expected to provide technical reference for the design of offshore recovery system and water impact test.

关 键 词：舱囊组合体 着水冲击 流固耦合 航天返回 

分 类 号：O35[理学—流体力学]