中文摘要：

为获得等离子体点火器点火特性,使用自行设计的等离子体点火装置,对不同进口氩气压力和工作电流条件下的等离子体点火器高温射流特性和放电特性进行了实验研究,利用光谱仪对点火器出口处的发射光谱特征进行了测量,并根据光谱特征计算了等离子体的激发温度。结果表明：等离子体点火器的高温射流长度随进口氩气体积流量的增大先增大后减小,随工作电流的增大而增大;等离子体点火器的弧电流随进口氩气体积流量的增大而减小,随电源输出电流增大而增大;等离子体点火器出口射流的激发温度随工作电流的增大而增加,随氩气体积流量的增大而减小,所得结果对等离子体点火系统在航空发动机的实际应用具有一定的指导意义和参考价值。

英文摘要：

In order to get ignition characteristic of plasma ignitor,both discharge characteristic and hyperthermia jet characteristic of plasma ignitor under different inlet Ar pressure and working current are researched by adopting selfmade plasma ignitor.A spectrometer was adopted to measure the spectrum characteristic at the exit of ignitor and excitation temperature of plasma was calculated according to the spectrum characteristic.The results show that the hyperthermia jet length of plasma ignitor firstly increases then decreases as the inlet Ar flow rate rises,and increases as working current rises;the arc current of plasma ignitor decreases as the inlet Ar flow rate rises,and increases as the source output current rises;the excitation temperature of jet at the exit of plasma ignitor increases as the working current rises and decreases as the Ar flowrate rises.The research results are of certain guidance significance and reference values for the practical application of plasma ignition system in aeroengine.