Science and Technology of Energetic Materials

Vol.74, No.2 (2013)


Possibility of ignition of electric fusehead due to electromagnetic induction
Dongjoon Kim, Shu Usuba, Yozo Kakudate, and Shuzo Fujiwara


The electromagnetic induction effect has been investigated for an electric ignition system with a multi-conductor cable commonly used for launching a series of fireworks in a firework display. The results show that the energy consumed in a bridgewire (EB) may have a value close to the minimum energy required to ignite a fusehead, depending on the type of cable and the way it is used. In addition, it was found that chatter in a mechanical switch can cause a further increase in EB, possibly leading to unintentional ignition.

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fusehead, ignition, electromagnetic induction, chatter

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