Infrared and Laser Engineering, Volume. 50, Issue 7, 20200464(2021)
Optical telescope of space debris detection and ranging compound system
Figures & Tables(22)
Fig. 2. Principle diagram of the optical path of the space debris detection and ranging composite system
Fig. 7. RMS value analysis result of the surface error of the main mirror assembly
Fig. 15. Simulation results of the tail installation of the whole machine
Table 1. Technical specificatons optical telescope
View tableView in ArticleTable 1. Technical specificatons optical telescope
Item Technical index requirements Effective aperture of optical system 250 mm Surface accuracy RMS of main mirror assembly ≥λ/40 System wave aberration RMS ≥λ/10 Primary and secondary mirror spacing error ≤0.02 mm Primary and secondary mirror tilt ≤3″ Secondary mirror and bracket blocking ratio ≤7% Optical antenna fundamental frequency ≥120 Hz Optical antenna quality ≤10 kg
Table 2. Material properties of optical telescope
View tableView in ArticleTable 2. Material properties of optical telescope
Material $\rho /{g}\cdot {\rm cm}^{-3}$ $ E/\rho $ Thermal stability $ \mu $ $ \mathrm{\alpha }/ $ Zerodur 2.53 3.58 32.8 0.23 0.05 $ \times {10}^{-6} $ Be 1.85 15.6 19.12 0.26 11.3 $ \times {10}^{-6} $ RB-SIC 3.5 10.6 60.7 0.29 2.6 $ \times {10}^{-6} $ Al 2.68 2.55 7.1 0.33 23.6 $ \times {10}^{-6} $ ULE 2.21 3.08 87.3 0.17 0.015 $ \times {10}^{-6} $ TC4 2.53 4.44 29.49 0.23 8.9 $ \times {10}^{-6} $ 4J32 8.1 17 46.33 0.26 0.3 $ \times {10}^{-6} $ 4J36 8.05 18 8.25 0.29 1.26 $ \times {10}^{-6} $ 2A12 2.9 27 7.1 0.33 23.6 $ \times {10}^{-6} $ 60SiC/Al 3.02 71 25.88 0.17 8.5 $ \times {10}^{-6} $
Table 3. Minimum panel thickness required for different lightweight structures
View tableView in ArticleTable 3. Minimum panel thickness required for different lightweight structures
Structure type Triangle circle Hexagon Minimum thickness/mm 8.9 9.2 9.5
Table 4. Lightweight analysis results of main mirror
View tableView in ArticleTable 4. Lightweight analysis results of main mirror
Structure type First-order mode Second-order mode Third-order mode Quality/kg Lightweight rate Volume/mm3 Surface area/mm2 Triangle 2290.3 2290.5 2976 2.492 40.62% 9.95e+05 2.57e+05 Circle 2005.4 2010.2 2698 2.422 42.28% 9.58e+05 2.15e+05 Hexagon 1870.4 1890.6 2501 2.401 42.72% 9.54e+05 2.02e+05
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Xiang Li, Dongwei Bai, Lixin Meng, Liang Gao, Yan An. Optical telescope of space debris detection and ranging compound system[J]. Infrared and Laser Engineering, 2021, 50(7): 20200464
Paper Information
Category: Optical design
Received: Nov. 23, 2020
Accepted: --
Published Online: Aug. 23, 2021
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