论文部分内容阅读
空间太阳望远镜主镜是有效口径为1m的抛物面镜,工作状态需要达到衍射极限,因此光学系统要求主镜面形误差小于λ/40(RMS),精度主要靠主镜支撑结构来保证。主镜支撑结构应满足地面调试、在轨及发射状态的需要。支撑结构试验样机已经加工完成,地面调试结果表明主镜的镜面变形满足整个光学系统的要求。试验样机强度和刚度还有较大余量,结构本身比较复杂。用有限元分析方法进行优化设计,优化后的主镜支撑结构满足地面调试、在轨及发射状态的需要,也能保证主镜的面形满足整个光学系统的要求,有效减轻仪器重量、简化支撑结构的同时,提高了整个仪器的可靠性。
The primary mirror of the space solar telescope is a parabolic mirror with an effective aperture of 1 m. The working state needs to reach the diffraction limit. Therefore, the optical system requires the primary mirror error of less than λ / 40 (RMS), and the accuracy is mainly ensured by the primary mirror support structure. The main mirror support structure should meet the ground commissioning, in-orbit and launch the state needs. Support structure test prototype has been completed, the ground commissioning results show that the main mirror mirror surface deformation to meet the requirements of the entire optical system. Test prototype strength and stiffness there is a larger margin, the structure itself is more complicated. The finite element analysis method is used to optimize the design. The optimized primary mirror support structure can meet the requirements of on-site commissioning, on-orbit and launch status, and also ensure the primary mirror face shape meets the requirements of the entire optical system, effectively reducing the weight of the instrument and simplifying the support Structure at the same time, improve the reliability of the entire instrument.