| 摘要 |
A safing and arming device mounted inside the shell of small caliber ammunition for normally forming a barrier between a detonator and an explosive train contained in the shell. A soft wire of lead, aluminum or plastic material, embedded in a groove in the top of the barrier normally holds it against movement. As the result of high spin, the barrier is forced to move so as to open a path between said detonator and explosive train to enable arming after a safe delay. The barrier may be two halves tied together by the soft wire of stretchable material which will slowly stretch as the result of high spin and ultimately break, allowing the halves to move apart radially to open the path. A modification of the barrier is to normally position it eccentrically of the center of gravity, at which location it forms a barrier. High spin will effect cutting of the wire and movement of the barrier to a non-blocking position.
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