关键词: 爆炸力学, 终点效应, 活性破片, 油箱, 能量释放, 引燃机理

Abstract: The damage effects of reactive fragment on full-filled fuel tank, including tank rupture and aviation kerosene ignition, was studied through ballistic experiment, and compared with the damage of the fuel tank subjected to a tungsten alloy fragment mass matched. The results show that the reactive fragment is able to perforate a 10 mm thick LY12 aluminium wall at 1 080 m/s and ignites the aviation kerosenes, but the tungsten alloy fragment penetrating into the tank at 1 643 m/s fails to ignite the fuel. The reactive fragment results in more damage on the fuel tank than the tungsten alloy fragment and improves the ignition ability to the aviation kerosene at normal temperature, mainly by its explosion effects and chemical energy release.

Key words: explosion mechanics, terminal effects, reactive fragment, fuel tank, energy release, ignition mechanism