电弧加热发动机结构参数对性能的影响

Effects of Arcjet Thruster Structure Parameters on Performance

为了研究结构参数对电弧加热发动机的影响,设计了不同结构尺寸的小功率电弧加热发动机,通过地面点火实验获得了发动机的参数和性能。在此基础上分析了推进剂进入方式、约束通道结构尺寸、电极材料对发动机性能的影响,给出了优化的约束通道参数。实验表明,电弧加热发动机结构参数对发动机工作性能产生较大的影响。

The low power arc jet thrusters with different structures and sizes were designed. The operation parameters and performances of arcjet were tested by the ground experiment. The effects of propellant entry, constrictor size and electrode material on performance were analyzed in detail and the optimum constrictor size was obtained. The resuhs show that the structure and size can significantly affect the working performances of thruster.