Abstract
Primary mirror with Φ 1m and f 3.5m is the most important optical part in Space Solar Telescope (SST), which is designed to make observations of transient and steady state solar hydrodynamic and magnetohydrodynamic processes and is being researched and manufactured by National Astronomical Observatories. The primary mirror structure(PMS), a crucial linker for the optical and other subsystems, includes primary mirror and its supporting frame. Therefore, this part must satisfy the optical sufficient strength, stiffness, and thermal stability requirements under the space environment and in the launching process. In this paper the primary mirror structure and its connection are described. The scheme of modal analysis and experiment is built, according to the specific dynamic requirements of the primary mirror structure in Space Solar Telescope. The dynamic response on the primary mirror structure is analyzed with MSC.NASTRAN software. Comparing these results with mode parameters obtained from modal experiment analysis. Modal experiment uses freely hanging primary mirror structure, simple input multi-output, and modal parameter identification through CADA-X software. Both results provide evidences to develop this satellite design.
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