A projectile or a high speed entry underwater kinetic body is impacted by a high frequency. Therefore, electronic devices in the kinetic body need to be designed for shock-resistant structures. The structure, layout and stability of circuit card assem...
A projectile or a high speed entry underwater kinetic body is impacted by a high frequency. Therefore, electronic devices in the kinetic body need to be designed for shock-resistant structures. The structure, layout and stability of circuit card assemblies in electronic equipment were reviewed in consideration of impact direction and impact volume. The modified circuit card assembly is arranged to be stable against the impact of high frequency. And equipment housing was designed to resist against the impact. Based on the acquisition data of MIL-STD-901 Lightweight Shock Test (LWST) and MIL-T-18404 drop table test, modal analysis and SRS analysis were performed to review structural stability of equipment.