• Infrared and Laser Engineering
  • Vol. 51, Issue 4, 20210496 (2022)
Yongjian Wu1、2, Yong Liu1、2, and Xin Sun1、2
Author Affiliations
  • 1Beijing Institute of Space Mechanics & Electricity, Beijing 100094, China
  • 2Beijing Key Laboratory of Advanced Optical Remote Sensing Technology, Beijing 100094, China
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    DOI: 10.3788/IRLA20210496 Cite this Article
    Yongjian Wu, Yong Liu, Xin Sun. Analysis and elimination of adhesive bonding force of flexible supported space mirror[J]. Infrared and Laser Engineering, 2022, 51(4): 20210496 Copy Citation Text show less
    Secondary mirror assembly
    Fig. 1. Secondary mirror assembly
    Support structure of secondary mirror
    Fig. 2. Support structure of secondary mirror
    Support structure and the corresponding finite element model
    Fig. 3. Support structure and the corresponding finite element model
    ParameterMirrorGluePadBipod rod
    MaterialULERTVInvar 4J32B TC4R
    Density/103 kg·m−32.211.508.874.45
    Modulus/GPa673.68114110
    Coefficient of thermal expansion/10−6 K−10.032520.039.0
    Table 1. Parameters of material performance
    Glue spot/mmShape of surfaceDeformation
    1RMS<0.001λ
    Table 2. Analysis of adhesive curing
    ConditionShape of surfaceDeformation
    2 ℃ temperature riseRMS<0.001λ
    Table 3. Temperature effect analysis
    ConditionShape of surfaceDeformation
    Without padRMS=0.012λ
    With padRMS=0.013λ
    Table 4. Influence of adhesive curing
    ConditionShape of surfaceDeformation
    Outgassing experimentRMS=0.020λ
    Table 5. Effect of vacuum degassing
    ConditionShape of surfaceDeformation
    Total root mean square of 9 grms RMS=0.019λ
    Table 6. Stress relieving vibration condition and effects
    ConditionShape of surfaceDeformation
    40 ℃ (72 h)RMS=0.015λ
    60 ℃ (72 h)RMS=0.014λ
    Table 7. Hot soak test and its effects
    Yongjian Wu, Yong Liu, Xin Sun. Analysis and elimination of adhesive bonding force of flexible supported space mirror[J]. Infrared and Laser Engineering, 2022, 51(4): 20210496
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