Infrared and Laser Engineering, Volume. 50, Issue 5, 20200332(2021)
Thermal design and test for space camera on inclined-LEO orbit
Figures & Tables(10)
Fig. 2. Periodic heat flow with different
Fig. 3. Periodic heat flow with different
Fig. 5. Periodic heat flow absorbed by coupled radiating surface with different
Fig. 6. Schematic diagram of heat dissipation for pulse tube refrigerator
Table 1. Thermal control index of the camera main components
View tableView in ArticleTable 1. Thermal control index of the camera main components
Components Thermal control index Baffle −100-80 ℃ Main load bearing structure 10-24 ℃ Main mirror, second mirror, third mirror （18±2） ℃，stability better than ±0.3 ℃/orbit Focusing mirror （18±1.2） ℃，stability better than ±0.3 ℃/orbit Pulse tube, refrigerator −35-15 ℃，stability better than ±5 ℃/orbit Dewar components >28 ℃ （Heating decontamination stage）
Table 2. Thermal balance test cases
View tableView in ArticleTable 2. Thermal balance test cases
Case Orbit external thermal flux Temperature boundary Operating mode Case 1 Minimum Low temperature boundary Heating decontamination mode Case 2 Minimum Low temperature boundary Standby mode Case 3 Maximum High temperature boundary Normal operation mode
Table 3. Temperature data of thermal balance test and in orbit
View tableView in ArticleTable 3. Temperature data of thermal balance test and in orbit
Components Thermal balance test/℃ In orbit temperature/℃ Temperature stability/℃·orbit−1 Index satisfaction Case 2 Case 3 Main mirror 18.6-18.7 19.3-19.6 18.7-18.9 <±0.3 √ Second mirror 18.3-18.6 18.3-18.5 17.8-18.2 <±0.3 √ Third mirror 18.8-18.9 18.9-19.1 18.7-18.9 <±0.3 √ Focusing mirror 17.8-18.1 18.4-18.8 18.2-18.7 <±0.3 √ Baffle 3.8-4.4 6.3-10 7.6-12.3 − √ Main load bearing structure 16.8-19.7 17.2-20.4 17.1-20.2 − √ Refrigerator compressor −32.8- −31.9 −13.2- −11.8 −23.6- −18.3 <±5 √ Refrigerator hot end −32.2- −31.4 −18.7- −11.6 −15.8- −11.5 <±5 √
Tools
Get Citation
Copy Citation Text
Zhi Yu, Qingliang Meng, Feng Yu, Yunsong Nie, Zhenming Zhao, Nan Guo. Thermal design and test for space camera on inclined-LEO orbit[J]. Infrared and Laser Engineering, 2021, 50(5): 20200332
Paper Information
Category: Optical design
Received: Sep. 4, 2020
Accepted: --
Published Online: Aug. 13, 2021
The Author Email:
© Copyright 2018-2021 | Chinese Laser Press.
All Rights Reserved 沪ICP备15018463号-20