某空间反射镜支撑装调技术

为了降低反射镜支撑装调对反射镜面形精度的影响，文中针对某空间相机的反射镜组件，设计了一种带有柔性环节的反射镜支撑方式，制定了反射镜组件的装调方法及路线。通过计算给出了反射镜粘结胶层厚度、粘结区域、柔性铰链等参数，并对反射镜组件进行了重力和5 ℃温变共同作用下的有限元分析。最后，根据装调工艺对反射镜组件进行粘胶、固化处理，并通过反射镜组件力学试验和热真空试验对装调方法进行验证。试验结果表明:力学和热真空环境下反射镜粘胶没有破坏，该反射镜组件的面形精度优于1/50 。验证了反射镜支撑方案以及装调方法的有效性。

Support structure and assembling technique of a space mirror

In order to reduce the effect of the assembling process on the accuracy of the surface shape of the mirror, based on a space camera's mirror subassembly, a flexible support structure was designed, and the assembling method was formulated. First, the thickness and the area of the adhesive, the flexible hinge as well as other parameters were given based on the formula. Second, the finite element analysis for the mirror subassembly was carried out under the combined effect of gravity and 5 ℃ temperature change. Third, according to the assembling process of the mirror subassembly, the viscose and curing treatment for the mirror subassembly was carried out. Finally, mechanical test and thermal vacuum test of the mirror assembly was conducted so as to verify the alignment method. Experimental results indicate that, under the mechanical and thermal vacuum environment the viscose of the mirror subassembly is not destroyed, and the accuracy of the surface shape of the mirror is better than 1/50 . It can verify the effectiveness of the mirror support structure and assembling method for the mirror subassembly.