用于飞行器的强电离放电非平衡等离子体隐身方法研究

Study on the Method of Non-Equiblium Plasma Stealth by Using Strong Ionization Discharge

着重研究了等离子体临界电子密度、电子等离子体频率等参数对电磁波的折射、吸收、反射的影响。在此基础上,采用了强电场电离放电方法,在放电间隙内产生高密度、高能量的电子,它足以电离氮、氧等气体,在飞行器表面形成具有一定梯度的高密度等离子体层,能够吸收、折射电磁波,衰减雷达散射面积达千余倍。该等离子体器件是一个很薄的组合件,仅有百余克重,可贴附在电磁波强散射部位和进气道壁上。此方法具有吸收频带宽、吸收率高等特点,有望成为机载微型等离子体产生器件。

In this paper,the effects of critical electron density of plasma and the plasma frequency of electron on the refraction, absorption and reflection of the electromagnetic wave are studied. On this basis, the strong ionization discharge with high density and energy of electrons is used to ionize nitrogen and oxygen to form high density of grad plasma layers, which can absorb and reflect the electromagnetic wave and then attenuate the RCS with several thousands times. The plasma generator is a thin groupware weighing several grams and can be attached to the parts that refract electromagnetic wave or to the air intake. It can be utilized to form small airborne plasma generator with wide absorption band, high absorption rate and optional response function.