固液混合火箭发动机中的关键技术及其发展

Key Technique of Hybrid Rocket Motor and Its Development

根据固液混合火箭发动机的结构特点及工作过程,分析了它所具有的优、缺点。纵观国内、外的研究情况,总结出固液混合火箭发动机中的关键技术和难点,主要包含:(1)发展新的高能固体燃料和氧化剂,提高固体燃料的退移速率;(2)测量工作过程中固体燃料退移速率;(3)研究不同类型固体燃料热解机理及规律;(4)建立固体燃料退移速率的公式;(5)抑制不稳定燃烧;(6)建立缩比准则;(7)发展混合火箭发动机工作过程模拟的数值模型等。分析了国内、外在研究中采用的技术途径、取得的成果,以及今后的发展方向。

Basing the structure and operation process of hybrid rocket motor, both of its advantages and disadvantages were presented. Also, concluding the national and foreign research so far, the key techniques and difficulties were summarized as follows： 1. developing high-energy solid fuel and raising regression rate of the solid fuel; 2. measuring regression rate of solid fuel during operation ; 3. studing pyrogenation of different solid fuels ; 4. building formulation of solid fuel regression rate ; 5. repressing unstable combustion ; 6. establishing subscale rule ; 7. developing numerical model of hybrid rocket motor operation. All of adopted technique, progress, and future development were concluded.