微小型化学能推进器的研究

化学能推进系统功耗低、结构简单紧凑 ,适于微小型化。本文介绍了两种微小型化学能推进器的结构设计、制造工艺、仿真和实验结果。 (1)微小型固体推进器阵列 ,由点火电路、工质贮腔和喷口阵列等部件构成 ,根据理论分析 ,对结构尺寸进行了优化 ,改变单元尺寸 ,可以得到 0 .5～30mN不同推力级别 ,比冲 (Isp)大于 30 0s ;(2 )同相催化的单组元液体推进器 ,其关键部件是微小型推力室 ,包括催化反应腔和喷管等结构 ,试验样机的冲量输出分辨率优于 80 μNs。

Research into micro chemical thrusters

Chemical propulsion system is suitable for miniaturization because of its low power consumption and simple structure. This paper presents the design, fabrication process, computation and experimental results of two types of micro chemical thruster. (1) The micro solid propellant thruster array is composed of ignition circuit and the arrays of propellant tanks and nozzles. Optimization is made based on theoretical analysis. Thrust force of 0.5～30mN and I sp beyond 300s are obtained for each unit with different dimensions. (2) The key component of the homogeneously catalyzed micro monopropellant thruster is its micro thrust chamber, which consists of the catalytic reaction tank and the micro nozzle. The impulse output resolution of the experimental prototype is better than 80μNs.