Micro-electric-pyrotechnic energy-harvesting apparatus for munitions
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United States of America Patent
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Mar 19, 2019
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Jun 12, 2017
filing date -
Jun 12, 2017
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Abstract
A micro-electro-pyrotechnic energy-harvesting apparatus to harvest an incidental portion of a propellant energy utilized when a munition is fired freeing a magnet to strike an impact pin that strains a piezoelectric element. The piezoelectric element generates a collected voltage, which triggers a pyrotechnic initiator that, on activation, produces a straining force on a plurality of stacks of piezoelectric elements. The strained piezoelectric elements, in turn, generate a high voltage output sufficient to ignite the munition's explosive material. The apparatus may be quite small, for example, the cross-sectional size of a pen, which is about one centimeter, yet suitable for generating an electrical ignition of the explosive material.
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