Journal of Astronautics ›› 2021, Vol. 42 ›› Issue (1): 41-49.doi: 10.3873/j.issn.1000-1328.2021.01.005

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Dynamic Analysis of Spinning Deployment of Space Web

QIN Zhi wei, LIU Zhen, SUN Guo peng, QI Yu feng   

  1. 1. Department of Mechanical Engineering, Harbin Institute of Technology, Harbin 150001, China;2. Beijing Institute of Spacecraft System Engineering, Beijing 100094, China
  • Received:2020-02-28 Revised:2020-04-23 Online:2021-01-15 Published:2021-01-25

Abstract: In the launching scheme of using a pyrotechnic device to project a space web, there are some problems such as the large shock between the space web system and the satellite platform, the short maintenance time of the web configuration after deployed, etc. This paper presents a scheme for unfolding a space web through four controllable rotary tubes to overcome the above problems. An analytical model based on the Lagrange dynamics equation and finite element (FE) models using the central difference algorithm are developed and compared together. The results of the angular velocity of the rotary tubes and the length of the web arms are very consistent when the web arms are analyzed with the analytical model and the FE model, which proves that the simulation model construction method is effective. The topology and control strategy of the space webs are optimized under the FE web model, so that the state after deployment of the space webs can be maintained for a long time.

Key words: Space webs, Spinning deployment, Control strategy; Dynamics

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