微小型双组元姿控发动机技术研究

Study on miniature liquid bipropellant attitude control rocket engine

高性能微小型液体双组元姿控发动机具有冲量小、响应快、质量轻、尺寸小等特点,可为微小卫星等航天器实现在轨精确姿态控制,延长在轨工作寿命以及轻小型化等方面的应用提供技术基础。本文以5 N微小型双组元液体火箭发动机为例,从微小型喷注器设计、微小型阀门设计、微小尺寸构件成型技术、热相容设计等方面,详细介绍了上海空间推进研究所在微小型双组元发动机设计及制备方面取得的进展和成果,提出了该项目的后续研制计划。

High-performance miniature liquid bipropeUant rocket engine has the characteristics of rapid response, low specific impulse, high control accuracy, light weight and small size, which can provide technique basis for micro satellites to realize accurate orbit attitude control and prolong orbital lifetime. Taking the 5 N miniature bipropellant rocket engine as an example, the progress and achievements in design and preparation of the miniature liquid bipropellant rocket engine in Shanghai Institute of Space Propulsion are overviewed, such as micro injector design, micro valve design, micro-component molding technology and thermal compatible design. The development plan of this research project is given in this Daner.