Research on In-orbit Assembly Unit and Docking Interface of Large Space Structure

doi:10.3901/JME.2022.01.052

Abstract

Abstract: In recent years, in-orbit service technology is becoming more and more mature, so in-orbit assembly has received great attention in the space technology research field. In this paper, a kind of cable-strut tension hexagonal prism assembly unit with large deployment ratio and high stiffness and a kind of three-claw-type docking interface mechanism are studied, and their kinematic and dynamic characteristics are studied. Firstly, a new space structure assembly unit and a three-claw docking interface are proposed and designed, the interface can be used for in-orbit assembly. Then, the kinematic characteristics of the spatial structure assembly unit are analyzed, and the good deployment and locking functions of the assembly unit are verified. Finally, according to the finite element analysis of the large structure model, it is found that the fundamental frequency of the structure is affected by many parameters, and the specific influence rules and sensitivity are also shown under the further analysis, which lays a foundation for the design of the space large structure in-orbit assembly.

Key words: in-orbit assembly, hexagonal prism unit, structure design, docking interface, kinematics, dynamics

CLC Number:

TG156

SHI Chuang, LI Weijie, GUO Hongwei, TAO Lei, LIU Rongqiang, DENG Zongquan. Research on In-orbit Assembly Unit and Docking Interface of Large Space Structure[J]. Journal of Mechanical Engineering, 2022, 58(1): 52-60.

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