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采用硅酸盐质弹丸模拟低密度脆性微流星体,开展了航天器典型Whipple防护结构撞击实验研究,获得了低密度微流星体弹丸损伤模式和损伤规律,实验表明,当弹丸撞击速度在1.1～1.4km/s,前板损伤模式从花瓣式开裂转变为穿孔,当速度为1.4km/s时后板鼓包头上出现裂纹;随着弹丸速度的进一步增加,后板出现剥落现象,并形成花瓣撕裂,当弹丸撞击速度达到1.95km/s时后板被击穿,导致防护结构受到破坏.
The silicate pellets were used to simulate the low density brittle meso-meteoroid, and the impact experiments of the typical Whipple shield were carried out. The damage modes and damage rules of the low density micro-meteoroid projectile were obtained. Experiments show that when the projectile impact velocity is between 1.1 ~ 1.4km / s. The damage mode of the front plate changed from petal-type cracking to perforation. When the speed was 1.4km / s, cracks occurred on the head of the rear plate drum. With the further increase of the projectile velocity, the rear plate appeared spalling and formed petals Tear, when the projectile impact velocity of 1.95km / s when the rear plate is punctured, resulting in damage to the protective structure.