非均匀等离子体包覆平板模型微波反射功率测量与分析

介绍了等离子体隐身技术的原理性试验。在大气环境中利用已有的微型固体火箭发动机作为等离子体发生器进行试验,控制发动机喷流流场中的电子密度分布,采用微波反射仪测量金属平板在有无以及不同电子密度喷流包覆情况下的微波反射功率。试验结果表明,峰值电子密度为1011 e/cm3的非均匀等离子体对9.5GHz的微波具有明显的吸收作用,并且试验结果和数值计算结果吻合较好。通过试验,验证了等离子体隐身的特性,为下一步开展等离子体隐身研究打下基础。

Measurement and Analysis of the Microwave Reflected Power of the Flat Model Wrapped by Heterogeneous Plasma

This paper presents principle test on vanishing target by plasma technology.The subminiature solid rocket engine is used as plasma generator in the atmosphere environment.The electron density in the cascade flow can be controlled by rocket engine.The microwave reflectometer is used to measure reflected power of the metal flat when it is wrapped by vary cascade flow.The test results present heterogeneous plasma(peak electron value is 1011e/cm~3) is capable of absorbing frequency 9.5GHz microwave.Moreover,the numerical results are accord with the test results.Vanishing characteristic of the plasma is verified after the test.Preparations have been made for plasma vanishing investigation in the future.