高分辨率相机的碳纤维复合材料主次镜连接筒设计

Design of CFC Cylinder Joint Structure between Primary and Second Mirror in Space High-resolution CCD Camera

分析了共轴三反光学系统中主次镜间距和光轴倾斜量对MTF的影响,计算确定了碳纤维复合材料连接筒的铺层合理形式,完成了复合材料连接筒的优化设计。通过有限元软件MSC．nastran对设计结果进行了分析,结果表明所设计的碳纤维复合材料连接筒满足了高分辨率相机连接筒结构端面变形量小于2μm的刚性使用要求。

The influence of the spacing and de-coaxial error between the primary and second mirror on MTF in a 3R optical system was analyzed ,the appropriate and optimal layer sequence was calculated and determined, and a cylinder joint structure made of CFC was designed. MSC. NASTRAN was used to confirm the correctness of the design, the result of the Finite Element Analysis （FEA） displays its maximum distortion less than 2 μm,which satisfies the structure rigidity requirement of space high-resolution camera .