Jian Yuan, Lei Zhang. Structure design and verification of primary mirror assembly for large off-axis TMA camera[J]. Infrared and Laser Engineering, 2023, 52(1): 20220363

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- Infrared and Laser Engineering
- Vol. 52, Issue 1, 20220363 (2023)

Fig. 1. Status of primary mirror testing and system alignment

Fig. 2. Diameter-thickness ratio of lightweight mirror

Fig. 3. Parameters of lightweight structure in primary mirror

Fig. 4. Main contents of integrated analysis model

Fig. 5. Solution process of two objective optimization problem

Fig. 6. Supporting structure of primary mirror

Fig. 7. Structure of flexure

Fig. 8. Relationship between flexure structure slot position and mirror deformation

Fig. 9. Finite element model of primary mirror assembly

Fig. 10. Thermal deformation nephogram of primary mirror

Fig. 11. First order vibration mode of primary mirror assembly

Fig. 12. Auxiliary bonding device for primary mirror assembly

Fig. 13. Flow chart of stress relieving for primary mirror assembly

Fig. 14. Layout of optical accuracy test for primary mirror

Fig. 15. Interferogram of primary mirror during optical accuracy test

Fig. 16. Sweep test results of primary mirror assembly
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Table 1. Design requirements for primary mirror assembly
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Table 2. Properties of common materials for large mirror
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Table 3. Variable ranges and optimization results (Unit: mm)
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Table 4. Material properties of supporting structure
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Table 5. Simulation results under main conditions
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Table 6. Modal analysis results of primary mirror assembly

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