自增压系统在轨姿控动力系统中的应用

自增压轨姿控动力系统结合了涡轮泵压式火箭发动机的高性能、轻质量和挤压式推进系统的可重复启动能力。降低贮箱压力和减少惰性气体用量的同时,通过采用紧凑的高压推力室减少了其他组件的结构尺寸和重量。介绍了自增压系统在轨姿控动力系统的应用优势、技术特点、工作原理和目前的技术发展情况,分析了相应的关键技术,并基于目前技术基础,展望了发展的必要性和技术策略及途径。

Applications of self-pressurization in divert and attitude control system

New self-pressurizing Divert and Attitude Control System （DACS） combines the performance advantage and lightweight of a turbopump rocket engine and the restartability advantage of a pressurized propellant system. New self-pressurizing divert and attitude control system reduces the size and mass of hardware by permitting the use of compact high pressure thrust chambers and reducing liquid tank pressures and minimizing inert gas storage. In this paper, the application advan- tages, technical characters, operation principle, current status of new lightweight divert and attitude control system are presented. And the key techniques are analyzed. Based on current technology status, the necessity, strategy and approach of future development are brought forward.