一、引言所谓再入等离子鞘,是指飞行器重返大气层时,由于激波压缩和摩擦加热所产生的高温电离气体层(参见图1)。它对高速飞行器的通讯、制导、遥测、引爆以及电子对抗等问题有着密切的关联,因此引起了人们的注意。例如,等离子鞘使飞行器上电 I. INTRODUCTION Reentry plasma sheath refers to the layer of high-temperature ionized gas generated by shock compression and friction heating when the aircraft returns to the atmosphere (see Figure 1). It is closely linked to the issues of high-speed aircraft communication, guidance, telemetry, detonation and electronic warfare, and therefore attracts people’s attention. For example, the plasma sheath powers the aircraft up