复合材料在长焦距空间光学遥感器上的应用

对碳纤维增强聚合材料(CFRP)和碳化硅颗粒增强铝基(SiCp/Al)复合材料在空间光学遥感器的应用进行了介绍,并以某长焦距空间光学遥感器的主支撑结构为例,对应用不同材料时遥感器的质量、固有频率、热位移等进行了研究。研究结果表明:应用复合材料能够使主支撑结构质量降为278kg,从而降低发射成本;结构具有较大的刚度,固有频率为156.09Hz,满足设计指标;可以更加有效控制结构热变形引起的光学元件刚体位移,提高成像品质。文章对复合材料更好地应用于长焦距空间光学遥感器,具有一定的参考价值。

Application of Composite Materials in Long-focus Space Optical Remote Sensor

This paper discusses the application of CFRP（carbon fiber reinforced polymer） and SiCp/Al composite materials in space optical remote sensor. Taking main supporting structure of a long-focus space optical remote sensor as an example, this paper studies the weight, natural frequency and thermal displacement of sensor when different materials are used. The results show that the composite materials are helpful to decrease the weight of the main supporting struc- ture to 278kg, thereby cutting down the launch cost. With high stiffness and natural frequency of 156.09Hz, the structure meets the design specifications and can control more effectively the opti- cal element rigid body displacement caused by thermal deformation to improve the image quality. This paper has a reference value for the application of composite materials in long-focus space optical remote sensor.