考虑高空环境影响的充气式减速器折叠展开动力学计算

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中图分类号：V411.4;TP391.9 文献标志码：B

Dynamic calculation of folding and deployment of inflatable aerodynamic decelerator considering effect of high-altitude environment

HE Yiqian1，LEI Qing'，XUE Qiwen2，GUO Min3 LIU Fei ， ZHANG He4， LIU Xudong

Department of Engineering Mechanics，Dalian University of Technology，Dalian 116O24，Liaoning，China； 2.School of Civil Engineering，Dalian Jiaotong University，Dalian 116028，Liaoning，China； 3.Defense Research Institute，AVIC Optoelectronics Technology Co.，Ltd.，Luoyang 4710O3，Henan，China； 4. Aerospace Science and Industry Space Engineering Development Co.，Ltd.，Beijing 10o854， China）

Abstract： To study the folding and deployment process of the inflatable aerodynamic decelerator in the working conditions of high altitude environment， taking the US IRVE-3 aircraft as a typical example，the folding model for simulating deployment process is established，the strap structure is modeled by membrane element，and the control volume and the LS-DYNA software are employed for fluid-solid coupling dynamics computation. In the dynamic analysis，the influence of the ground and high altitude environment on the deployment process is investigated，and the mechanism analysis is made.The computational results show that the proposed model can effectively simulate the folding and deployment process，and the deployment time， airbag volume and internal pressure change of the inflatable aerodynamic decelerator will be significantly influenced by high altitude environment.

Key words：inflatable aerodynamic decelerator；control volume method；folding modeling；inflatable deployment；numerical simulation；high altitude environment

0引言

充气式减速器是一种新型的再入减速技术，发射时折叠包装收纳，在进入大气前完成充气展开。（剩余8879字）