Infrared and Laser Engineering, Volume. 50, Issue 4, 20200294(2021)
Thermal design of space solar telescope
Figures & Tables(18)
Fig. 1. Schematic diagram of the overall structure of the space solar telescope
Fig. 7. Thermal analysis cloud of frame (a) and guide telescope (b) under high temperature conditions
Fig. 8. Comparison curve between simulation and test under high temperature conditions
Fig. 9. Thermal analysis cloud of frame (a) and guide telescope (b) under low temperature conditions
Fig. 10. Comparison curve between simulation and test under low temperature conditions
Table 1. [in Chinese]
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Component Operating temperature/℃ Thermal control index/℃ Frame 19-25 22±1 Guiding telescope 19-25 22±1
Table 2. [in Chinese]
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Operating mode Working state Parameter setting High temperature Guide 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 temperature Guide 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 3. [in Chinese]
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Component Material Density/kg·m−3 Specific heat capacity/ J·(kg·℃)−1 Thermal conductivity/W·(m· ℃)−1 Frame Aluminium alloy 7A09 2800 921 154 Guiding telescope Aluminium alloy 2A12 2800 920 121
Table 4. [in Chinese]
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Num. Component name Design status Test status Consistency analysis 1 Frame Aluminium alloy 7A09 Aluminium alloy 7A09 Accordance 2 Guiding telescope Aluminium alloy 2A12 Aluminium alloy 2A12 Accordance 3 Temperature measurement sensor Thermistor Thermocouple Meet the test requirements 4 Thermal conductive filler Thermal grease Thermal grease Accordance 5 Heat insulation material 20-unit multilayer insulation assembly (Mask is F46 film) 20-unit multilayer insulation assembly (Mask is F46 film) Accordance 6 Heater 125 type polyimide film heater 125 type polyimide film heater Accordance
Table 5. [in Chinese]
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Position Working power/W Working voltage/V Total circuit resistance/Ω Upper cover plate 10 30 90 Lower cover plate 7.77 30 115.8 Upper of mounting substrate − Y 7 30 128.6 Upper of mounting substrate +Y 7 30 128.6 Lower of mounting substrate − Y 7.25 30 124.1 Lower of mounting substrate +Y 6.95 30 129.5
Table 6. [in Chinese]
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No. Position Sensor code 1 Frame +X TR-TBZX 2 Frame − X TR-TBFX 3 Upper cover plate TR-SGB 4 Lower cover plate TR-XGB 5 Upper of mounting substrate − Y TR-SFY 6 Upper of mounting substrate +Y TR-SZY 7 Lower of mounting substrate − Y TR-XFY 8 Lower of mounting substrate +Y TR-XZY 9 Guiding telescope TR-DXJ
Table 7. [in Chinese]
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No. Heating zone Finite element simulation analysis of average power consumption/W Thermal equilibrium test average power consumption/W 1 Upper cover plate 1.0 1.1 2 Lower cover plate 0 0 3 Upper of mounting substrate -Y 6.3 6.7 4 Upper of mounting substrate +Y 6.1 6.5 5 Lower of mounting substrate -Y 3.6 3.8 6 Lower of mounting substrate +Y 3.8 4.0 7 Guiding telescope 3.2 3.1 8 Summation 24 25.2
Table 8. [in Chinese]
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No. Heating zone Finite element simulation analysis of average power consumption/W Thermal equilibrium test average power consumption/W 1 Upper cover plate 1.0 1.1 2 Lower cover plate 0 0 3 Upper of mounting substrate -Y 7.3 6.7 4 Upper of mounting substrate +Y 7.1 6.6 5 Lower of mounting substrate -Y 3.6 3.9 6 Lower of mounting substrate +Y 3.8 3.7 7 Guiding telescope 3.2 3.2 8 Summation 26 25.2
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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
Paper Information
Category: Optical design
Received: Aug. 4, 2020
Accepted: --
Published Online: Jul. 30, 2021
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