基于超声阵列的云爆燃料浓度分布评估试验方法

FAE fuel distribution exhibits high dynamics, shock wave turbulence, and transient characteristics during explosive ejection, and this fuel concentration distribution forms effect the design of FAE warheads and fuzes. This study proposes a multi-point array dynamic fuel concentration distribution evaluation test system for FAE blasting based on the attenuation characteristics of pulsed ultrasound in the fuel cloud. The time-space variation of fuel concentration is evaluated using the obtained ultrasonic attenuation curves at different positions in the fuel cloud. The results show that the fuel cloud concentration in the central area increases from low to high, and then decreases gradually. The concentration is lower away from the central area of fuel cloud. The evaluation method can characterize the fuel concentration distribution of the FAE throwing process effectively. It provides experimental methods and data support for determining the optimal detonation time and position of the FAE fuze system.