Infrared and Laser Engineering, Volume. 53, Issue 8, 20240274(2024)
Design and analysis of carbon fiber main load-bearing cylinder structure for space cameras
Figures & Tables(24)
Table 1. Tolerance of optical system
View tableView in ArticleTable 1. Tolerance of optical system
Displacement/μm Tilt/(″) Δx, Δy, Δz θx, θy θz Primary mirror Reference Second mirror ≤6 ≤6 None
Table 2. Physical property table of related materials
View tableView in ArticleTable 2. Physical property table of related materials
Material Density ρ/g·cm−3 Young's modulus E/GPa Thermal expansivity α/×10−6 K−1 Specific stiffness ZTC4 4.40 114 9.1 26 SiCp/Al 2.95 180 8.0 61 2A12 2.80 70 22.7 25 CFRP 1.60 72 0.6 45
Table 3. Material parameters of M40J single-layer board
View tableView in ArticleTable 3. Material parameters of M40J single-layer board
Parameter Value ρ/g · cm−31.7 Ex/GPa 200 Ey/GPa 7 αx/×10−6 ℃−1 −0.59 αy/×10−6 ℃−1 23.3 μ 0.29
Table 4. The results of size optimization
View tableView in ArticleTable 4. The results of size optimization
Design variable Initial value/ mm Variation range/ mm Optimization value/ mm T1 5.0 [2.0,8.0] 6.0 T2 2.5 [2.0,6.0] 3.2 T3 4.0 [2.0,6.0] 2.5 T4 2.5 [1.0,3.0] 1.5 T5 4.0 [2.0,6.0] 2.4 T6 8.0 [4.0,10.0] 5.0 T7 6.0 [4.0,8.0] 4.8 T8 1.0 [0.5,2.0] 1.6 T9 3.5 [3.0,6.0] 5.2
Table 5. The results of layer optimization
View tableView in ArticleTable 5. The results of layer optimization
Design variable Initial value/mm Variation range/mm Optimization value/mm Design value/mm $ {T}_{0^{\circ}}^{G} $ 1.5 [1.0,3.0] 2.75 2.8 $ {T}_{\beta }^{G} $ 1.5 [0.8,2.0] 1.22 1.2 $ {T}_{-\beta }^{G} $ 1.5 [0.8,2.0] 1.22 1.2 $ {T}_{90^{\circ}}^{G} $ 1.5 [0.6,1.0] 0.81 0.8 β 45° [10°,60°] 24.7° 25° −β −45° [−60°,−10°] −24.7° −25° $ {T}_{0^{\circ}}^{L} $ 0.4 [0.5,1.0] 0.82 0.8 $ {T}_{45^{\circ}}^{L} $ 0.4 [0.2,0.8] 0.28 0.3 $ {T}_{-45^{\circ}}^{L} $ 0.4 [0.2,0.8] 0.28 0.3 $ {T}_{90^{\circ}}^{L} $ 0.4 [0.2,0.8] 0.22 0.2
Table 6. Comparison of parameters before and after optimization
View tableView in ArticleTable 6. Comparison of parameters before and after optimization
Ex/GPa Ey/GPa αx/×10−6 ℃−1 αy/×10−6 ℃−1 Not optimized 72.0 72.0 −3.01 3.01 Second mirror support rod 145.4 34.7 −0.83 14.1 Strengthening beams 115.2 47.0 −0.47 9.17
Table 7. The first three natural frequencies
View tableView in ArticleTable 7. The first three natural frequencies
Mode Frequency/Hz 1 241.2 2 241.7 3 316.4
Table 8. Random vibration power spectral density
View tableView in ArticleTable 8. Random vibration power spectral density
Frequency/Hz Power Spectral Density (PSD)/g2·Hz−1 x direction z direction 20 1×10−4 7.13×10−5 150 8×10−4 5.3×10−4 800 8×10−4 5.3×10−4 2 000 1×10−4 8.55×10−5
Tools
Get Citation
Copy Citation Text
Xu LIU, Heng WANG, Xiaofeng LIU, Zhen JIA. Design and analysis of carbon fiber main load-bearing cylinder structure for space cameras[J]. Infrared and Laser Engineering, 2024, 53(8): 20240274
Paper Information
Category: Optical design
Received: Jun. 26, 2024
Accepted: --
Published Online: Oct. 29, 2024
The Author Email:
© Copyright 2018-2021 | Chinese Laser Press.
All Rights Reserved 沪ICP备15018463号-20