Abstract
This article presents problems related to passive composite protection of unarmoured objects (helicopters, vehicles, etc.). It is focused on building and testing the different add-on armours (panels) protecting unarmoured objects against small-arms armour piercing projectiles (kinetic energy - KE). It has been illustrated how to increase ballistic protection of composite armours with minimum mass for unarmoured objects. The selection of appropriate materials and their parameters affects the improvement of the protection capability of these panels. The different parameters of ceramic samples (Al2O3, SiC, Ti3SiC2, B4C) which were used for the panels are presented. Panels sized of 100×100 mm contained the different types of layers, eg. polyethylene, aluminum sheet and small sized ceramics plates (50×50 mm and thickness of 6 mm, 8 mm and 9 mm), etc. The tested panels were placed in a small frame and the rear surfaces of the panels were at a distance from „witness RHA” (Rolled Homogeneous Armour). The protection capability of panels for all types of tests were defined with the use of 5.56×45 mm SS109 HC projectiles (STANAG 4569), which reference depth of penetration was DP ref=8 mm RHA.
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