• Infrared and Laser Engineering
  • Vol. 50, Issue 4, 20200294 (2021)
Shuang Yang1、2, Changshuai Du3, Xianwei Yang1, Chunlong Liu1, and Yan Xiong1、2
Author Affiliations
  • 1Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
  • 2University of Chinese Academy of Sciences, Beijing 100049, China
  • 3Technology and Engineering Center for Space Utilization, Chinese Academy of Sciences, Beijing 100049, China
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    DOI: 10.3788/IRLA20200294 Cite this Article
    Shuang Yang, Changshuai Du, Xianwei Yang, Chunlong Liu, Yan Xiong. Thermal design of space solar telescope[J]. Infrared and Laser Engineering, 2021, 50(4): 20200294 Copy Citation Text show less
    Schematic diagram of the overall structure of the space solar telescope
    Fig. 1. Schematic diagram of the overall structure of the space solar telescope
    Thermal control system composition diagram
    Fig. 2. Thermal control system composition diagram
    Schematic diagram of implementation state of frame
    Fig. 3. Schematic diagram of implementation state of frame
    Guide telescope cooling path diagram
    Fig. 4. Guide telescope cooling path diagram
    Finite element thermal analysis model
    Fig. 5. Finite element thermal analysis model
    Thermal equilibrium test device and platform
    Fig. 6. Thermal equilibrium test device and platform
    Thermal analysis cloud of frame (a) and guide telescope (b) under high temperature conditions
    Fig. 7. Thermal analysis cloud of frame (a) and guide telescope (b) under high temperature conditions
    Comparison curve between simulation and test under high temperature conditions
    Fig. 8. Comparison curve between simulation and test under high temperature conditions
    Thermal analysis cloud of frame (a) and guide telescope (b) under low temperature conditions
    Fig. 9. Thermal analysis cloud of frame (a) and guide telescope (b) under low temperature conditions
    Comparison curve between simulation and test under low temperature conditions
    Fig. 10. Comparison curve between simulation and test under low temperature conditions
    ComponentOperating temperature/℃Thermal control index/℃
    Frame19-2522±1
    Guiding telescope19-2522±1
    Table 1. [in Chinese]
    Operating modeWorking stateParameter setting
    High temperatureGuide mirror operation (Balanced condition)a) The telescope is in a high temperature external heat flow, the solar constant is 1412 W/m2; b) Thermal control coating takes end-of-life value; c) The 87° light angle guide is oriented to the sun.
    Low temperatureGuide mirror operation (Balanced condition)a) The telescope is in a high temperature external heat flow, the solar constant is 1322 W/m2; b) Thermal control coating takes initial value of life; c) The 57° light angle guide is oriented to the sun.
    Table 2. [in Chinese]
    ComponentMaterialDensity/kg·m−3Specific heat capacity/ J·(kg·℃)−1Thermal conductivity/W·(m· ℃)−1
    FrameAluminium alloy 7A092800921154
    Guiding telescopeAluminium alloy 2A122800920121
    Table 3. [in Chinese]
    Num.Component nameDesign statusTest statusConsistency analysis
    1FrameAluminium alloy 7A09Aluminium alloy 7A09Accordance
    2Guiding telescopeAluminium alloy 2A12Aluminium alloy 2A12Accordance
    3Temperature measurement sensorThermistorThermocoupleMeet the test requirements
    4Thermal conductive fillerThermal greaseThermal greaseAccordance
    5Heat insulation material20-unit multilayer insulation assembly (Mask is F46 film) 20-unit multilayer insulation assembly (Mask is F46 film) Accordance
    6Heater125 type polyimide film heater125 type polyimide film heaterAccordance
    Table 4. [in Chinese]
    PositionWorking power/WWorking voltage/VTotal circuit resistance/Ω
    Upper cover plate103090
    Lower cover plate7.7730115.8
    Upper of mounting substrate − Y730128.6
    Upper of mounting substrate +Y730128.6
    Lower of mounting substrate − Y7.2530124.1
    Lower of mounting substrate +Y6.9530129.5
    Table 5. [in Chinese]
    No.PositionSensor code
    1Frame +XTR-TBZX
    2Frame − XTR-TBFX
    3Upper cover plateTR-SGB
    4Lower cover plateTR-XGB
    5Upper of mounting substrate − YTR-SFY
    6Upper of mounting substrate +YTR-SZY
    7Lower of mounting substrate − YTR-XFY
    8Lower of mounting substrate +YTR-XZY
    9Guiding telescopeTR-DXJ
    Table 6. [in Chinese]
    No.Heating zoneFinite element simulation analysis of average power consumption/WThermal equilibrium test average power consumption/W
    1Upper cover plate1.01.1
    2Lower cover plate00
    3Upper of mounting substrate -Y6.36.7
    4Upper of mounting substrate +Y6.16.5
    5Lower of mounting substrate -Y3.63.8
    6Lower of mounting substrate +Y3.84.0
    7Guiding telescope3.23.1
    8Summation2425.2
    Table 7. [in Chinese]
    No.Heating zoneFinite element simulation analysis of average power consumption/WThermal equilibrium test average power consumption/W
    1Upper cover plate1.01.1
    2Lower cover plate00
    3Upper of mounting substrate -Y7.36.7
    4Upper of mounting substrate +Y7.16.6
    5Lower of mounting substrate -Y3.63.9
    6Lower of mounting substrate +Y3.83.7
    7Guiding telescope3.23.2
    8Summation2625.2
    Table 8. [in Chinese]
    Shuang Yang, Changshuai Du, Xianwei Yang, Chunlong Liu, Yan Xiong. Thermal design of space solar telescope[J]. Infrared and Laser Engineering, 2021, 50(4): 20200294
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