火箭发动机固体推进剂老化研究

针对影响长期储存固体火箭发动机性能的固体推进剂老化问题,探讨了固体推进剂老化的主要因素;从固体推进剂组分的影响、环境湿度、储存温度等方面分析了其影响固体推进剂老化的机理;对推进剂老化预估研究方法进行了比较详尽的总结和评述,重点分析了固体推进剂老化失效预估的力学性能法、活化能法、凝胶含量法、傅里叶红外光谱分析法和动态粘弹分析法,并对这些研究方法的内容和结果的可信度进行了分析.最后从深入研究固体推进剂的老化机理以及结合现代分析仪器的应用等方面对固体推进剂老化研究的发展趋势进行了展望.

Summary of Study of Rocket Engine Solid Propellant Aging

In view of the solid propellant aging which influences the performance of long storing solid rocket engine, the main factors of the solid propellant aging are discussed and the solid propellant aging mechanism is analyzed from the influence of the component of solid propellant, environment humidity and storing temperature. Then the methods of predicting solid propellant aging study are analyzed and reviewed, and the emphasis is put on analyzing the methods of mechanical properties, activation energy, gel content, Fourier infrared spectrum analysis and dynamic mechanical analysis. And simultaneously the main content of these methods and the reliability of these results are analyzed. Finally the developing trend of solid propellant aging is prospected from investigating the mechanism of solid propellant aging and the application of modern analysis equipment.