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A simple new Russian electronic impact fuze is armed at drone launch when a safety is pulled out, with no arming delay. An electric match seen here or an electric detonator are initiated at impact.

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365,253 views • 10 months ago •via X (Twitter)

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A Russian demonstrates the functioning of a Ukrainian electronic fuze for FPV warheads with a piezoelectric impact actuator. An arming delay begins at battery insertion, and there is a safety feature of joining 2 wires. A sharp tap to the piezo device initiates the detonator.
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A Russian demonstrates the functioning of a Ukrainian electronic fuze for FPV warheads with a piezoelectric impact actuator. An arming delay begins at battery insertion, and there is a safety feature of joining 2 wires. A sharp tap to the piezo device initiates the detonator.

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A Ukrainian PTM-L1 shaped-charge anti-vehicle landmine is prepared for dropping from a drone. The integrity of the arming delay is tested with an electric match before installing the electronic “Jonik” magnetic-influence fuze.

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Ukraine has mostly replaced FPV electric contact wires or mechanical detonators used in 2023–24 with safer electronic impact fuzes with timed arming delays. This FS-03 fuze is typical, with a 30 second delay and an accelerometer sensor. Russians aren’t as concerned with safety.
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With the huge numbers of FPVs expended every day, electric detonators are becoming scarce. Here a Russian painstakingly removes the primer from the mechanical detonator of a UZRG-M grenade fuze. This allows an electric match to be inserted, creating an ersatz electric detonator.
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