| Summary: | A series of impact fuel tank experiments are carried out through the ballistic impact method. The ignition abilities of Bi<sub>2</sub>O<sub>3</sub>-reinforced PTFE/Al reactive material, metal aluminum, and inert metal steel are compared and analyzed, and the ignition mode of kerosene is explored when PTFE/Al/Bi<sub>2</sub>O<sub>3</sub> impacts the fuel tank at different velocities. The results offer that PTFE/Al/Bi<sub>2</sub>O<sub>3</sub> reactive material has outstanding ignition ability, and the order for ignition ability is PTFE/Al/Bi<sub>2</sub>O<sub>3</sub> reactive material, metal aluminum, and inert metal steel. The kerosene content of the fuel tank has a significant impact on the ignition effect. The ignition effect of PTFE/Al/Bi<sub>2</sub>O<sub>3</sub> reactive material impacting the fuel tank filled with 50% kerosene is weaker than that impacting the full tank. Under different impact velocities, PTFE/Al/Bi<sub>2</sub>O<sub>3</sub> reactive materials display diverse ignition modes for kerosene: kerosene is directly ignited by the flame in the reverse reaction zone under low-velocity conditions, while high-temperature-activated reactive fragments are the ignition heat source of high-velocity conditions.
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