引言为了获取导弹被动段的飞行数据,可以采用遥测、软式、半硬式或硬式回收。由于硬回收不仅能获取直至撞地时的全部数据,并且简单、经济,所以一直是设计者所希望的回收方案。但因导弹落地速度的不断增加,沿用过去设计的穿地弹方案很少成功,因此人们提出在高马赫数落地情况下,硬回收方案是否可行的问题。由于弹丸高速撞靶时所产生的现象是极其复杂的。它不仅和弹、靶材料的物理性质有 INTRODUCTION Telemetry, soft, semi-rigid or hard recovery can be used to obtain the missile’s passive flight data. As hard recovery not only gets all the data up to the crash, but also is simple and economical, it has always been a designer’s favorite recycling program. However, due to the continuous increase of the missile landing speed, it is seldom succeeded in using the conventional design of the ground-penetrating bomb. Therefore, people are asking whether the hard recovery scheme is feasible under the condition of high Mach number. As the projectile hit the target at high speed the phenomenon is extremely complicated. It is not only physical and physical properties of the bomb, target material