Manufacturing and performance test of an 800-mm space optic
Manufacturing and performance test of an 800-mm space optic
复制标题
800毫米空间光学器件的制造和性能测试
DOI：
10.1117/12.788965
复制
发表时间：
2008
期刊：
影响因子：
--
通讯作者：
H. Kaneda
中科院分区：
文献类型：
--
作者：
M. Krödel;T. Ozaki;M. Kume;A. Furuya;Y. Yui;Hiroko Imai;H. Katayama;Y. Tange;T. Nakagawa;H. Kaneda
美国和欧洲目前正在开发的下一代太空望远镜需要具有高比强度、高比刚度、低CTE和高导热率的大型轻质反射镜。为了满足预算限制，他们还需要能够产生适合抛光表面而无需昂贵的复涂层的材料。 HB-Cesic（ECM 的欧洲和日本商标）是 ECM 和 MELCO 为应对这些挑战而联合开发的混合碳纤维增强 SiC 复合材料。与经典的ECM Cesic材料（MF型）相比，该材料的机械性能，如刚度、弯曲强度和断裂韧性显着提高。 HB-Cesic 在低温下的热膨胀和导热系数现已部分确定；预计未来大型空间镜子和结构将具有优异的性能。本文介绍了用于空间应用的 800 毫米镜子的设计和制造，从 C/C 原材料准备到组件的精加工，包括镜子的抛光。 HB-Cesic 中的字母“HB”代表“混合”，表示 C/C 原材料由不同类型的短切碳纤维的混合物组成。
Next generation space telescopes, which are currently being developed in the US and Europe, require large-scale light-weight reflectors with high specific strength, high specific stiffness, low CTE, and high thermal conductivity. To meet budget constraints, they also require materials that produce surfaces suitable for polishing without expensive over-coatings. HB-Cesic - a European and Japanese trademark of ECM - is a Hybrid Carbon-Fiber Reinforced SiC composite developed jointly by ECM and MELCO to meet these challenges. The material's mechanical performance, such as stiffness, bending strength, and fracture toughness are significantly improved compared to the classic ECM Cesic material (type MF). Thermal expansion and thermal conductivity of HB-Cesic at cryogenic temperatures are now partly established; and excellent performance for large future space mirrors and structures are expected. This paper presents the design and manufacturing of an 800-mm mirror for space application, starting with the C/C raw material preparation to the finishing of the components, including the polishing of the mirror. The letters "HB" in HB-Cesic stand for "hybrid" to indicate that the C/C raw material is composed of a mixture of different types of chopped, short carbon-fibers.