Study of velocity effects on parachute inflation performance based on fluid-structure interaction method

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• 作者：Han Cheng ; Xin-hua Zhang ; Li Yu …
• 关键词：fluid ; structure interaction (FSI) ; parachute ; inflation performance ; velocity ; empirical coefficient ; opening shock load ; V244.21 ; 65E05
• 刊名：Applied Mathematics and Mechanics
• 出版年：2014
• 出版时间：September 2014
• 年：2014
• 卷：35
• 期：9
• 页码：1177-1188
• 全文大小：667 KB
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• 作者单位：Han Cheng (1)
  Xin-hua Zhang (2)
  Li Yu (1)
  Meng Chen (2)
  
  1. College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, P. R. China
  2. Aviation Key Laboratory of Science and Technology on Aeronautical Life-Support, AVIC Aerospace Life-Support Industries Ltd., Xiangyang, 441000, Hubei Province, P. R. China
  
• ISSN：1573-2754

文摘

The inflation of a five-ring cone parachute with the airflow velocity of 18 m/s is studied based on the simplified arbitrary Lagrange Euler (SALE)/fluid-structure interaction (FSI) method. The numerical results of the canopy shape, stability, opening load, and drag area are obtained, and they are well consistent with the experimental data gained from wind tunnel tests. The method is then used to simulate the opening process under different velocities. It is found that the first load shock affected by the velocity often occurs at the end of the initial inflation stage. For the first time, the phenomena that the inflation distance proportion coefficient increases and the dynamic load coefficient decreases, respectively, with the increase in the velocity are revealed. The above proposed method is competent to solve the large deformation problem without empirical coefficients, and can collect more space-time details of fluid-structure-motion information when it is compared with the traditional method.