Testing of a piezoelectric generator for in-flight electrical powering of projectile guidance systems

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Abstract
An on-board piezoelectric generator comprising of an interial mass load and a PZT ceramic disc has been utilized to charge a capacitor during the in-barrel accelerations of projectiles. Experiments were conducted at our impact test facility with accelerations up to 50000g. The capacitor was discharged on impact and the total charge was measured, a diode prevents current reversal during acceleration decrease, alternatively, a diode bridge utilized the reverse current to double the charge output.

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