Abstract: A two-stage light gas gun is used to launch 2017-T4 Al-sphere projectiles impacting on single-wall bumper shield and stuffed bumper shield of woven at two kinds of ambient temperature. The effect of ambient temperature on damage and protection characteristic of Al-mesh, Basalt fiber cloth and Kevlar fiber cloth bumpers are studied. The diameter of projectile used to simulate space debris is 3.97 mm. Impact velocities of Al-spheres are varied between 1.47 km/s and 4.47 km/s. The impact angle is 0°. Ambient temperatures are 293 K and 393 K respectively. The results indicated that perforation size of woven bumper of single-wall bumper shield and woven stuffed wall of stuffed bumper shield increased at higher ambient temperature for the same impact condition. At the same time, the protection performance of all single-wall bumper shields of three woven bumpers degraded along with the rising of the ambient temperature, the protection performance of Al-mesh, Basalt fiber cloth stuffed bumper shields degraded and the protection performance of Kevlar fiber cloth stuffed bumper shield enhanced at higher ambient temperature.

Key words: damage, space debris, temperature, woven bumper, high-velocity impact