Ballistic limit of an aluminum foam-filled shield

To explore the application of foam materials to space protection,the ballistic limit curve of an aluminum foam-filled shield was obtained in the velocity range from 0.5 to 7.0 km/s by experiments and numerical simulation,which was compared with that of the Whipple shield.The results show that the aluminum foam-filled shield has higher space-debris protection performance than the Whipple shield with the same areal density and thickness;and that the foam porosity has few influences on the protection performance of the aluminum foam-filled shield.