大口径高精度复合材料反射器制造技术

为满足星载碳纤维蜂窝夹层结构天线反射器的大口径、高精度要求，提出了一种基于设计、工艺和测量的高精度反射器制造方法。该方法通过高热稳定性、高精度模具来提高反射面形面精度，通过蜂窝拼接来降低反射面固化时残余应力，通过高低温时效来降低固化后反射器部件残余应力，通过优化测量方法来提高反射器测量精度。实测结果表明，该技术能有效提高反射器制造精度和改善反射器热变形。

Manufacture of Large Aperture and High Precision Composite Reflector

To meet the requirements of the large aperture and high precision of space-borne carbon fiber honeycomb sandwich reflectors, a manufacturing method based on design, process and measurement is presented. In this method, the shape accuracy of the reflector is improved by means of a high thermal stability and high precision mould, the residual stress during curing is reduced by a honeycomb splicing method, the residual stress of the reflector parts after curing is reduced by a high and low temperature aging method, and the measurement accuracy of the reflector is improved by optimizing the measuring method. The result shows that the manufacturing accuracy and the thermal deformation of the reflector can be improved effectively by the manufacture technology.