| Citation: | YANG Z J，ZHANG C F，ZHAO R J，et al. Thermal deformation analysis and experimental verification of spatial deployable antenna hinge[J]. Journal of Beijing University of Aeronautics and Astronautics，2024，50（1）：243-249 （in Chinese） doi: 10.13700/j.bh.1001-5965.2022.0219
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The in-orbit thermal deformation analysis of space-deployable antennae is very important because it is one of the major factors impacting the accuracy of these antennae.With the increasing requirements of space exploration missions, the influence of hinge thermal deformation on the pointing accuracy of space-deployable antennae cannot be ignored. In order to calculate the relative angle changes of the main bending direction and side bending direction of the hinges with each temperature change of 10 ℃, a finite element model of the root and arm hinges of a spatial deployable antennae was established. The hinge precision test system was constructed based on the high and low-temperature chamber and electronic theodolite, and the hinge thermal deformation test was carried out. The experimental results show that the root hinge and the interarm hinge exhibit pure structural thermal deformation characteristics in the main and side bending directions. The simulation results are basically consistent with the experimental results, which verify the validity of the finite element model and experimental analysis method. According to the relative Angle changes of the main and side bending directions of the hinge, the effect of thermal deformation on hinge deformation was assessed. The modeling and experimental analysis method can provide a reference for the design, analysis, and optimization of deployable antennas in the same space and the analysis of the factors affecting the accuracy of similar deployable mechanisms.
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