Volume 38, Number 5, October 2020
|952 - 958
|08 December 2020
Modeling and Analysis of Deformed Parafoil Recovery System
School of Automation, Northwestern Polytechnical University, Xi'an 710072, China
The aerodynamic calculation of parafoil is the key technology of the parafoil recovery system modeling. In order to further improve the model accuracy, the lift coefficient and drag coefficient under the various states are obtained via fluid structure coupling method by considering the influence of the aerodynamic deformation and trailing edge deviation. Then, the least square method is used to identify the quantitative relationship among the aerodynamic coefficient, deflection, and deformation so as to improve the 6-DOF parafoil recovery system model. The results show that the structure of parafoil considering deformation and deflection is not only similar to the actual parafoil, but also the obtained aerodynamic parameters are more close to the wind tunnel test, which proves that the present method has certain significance for precisely modeling the parafoil recovery system.
Key words: parafoil / fluid structure coupling / trailing edge deflection / inflatable deformation / dynamic model
关键字 : 翼伞 / 流固耦合 / 后缘下偏 / 充气变形 / 动力学模型
© 2020 Journal of Northwestern Polytechnical University. All rights reserved.
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