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![]() M. J. Powell wrote: In message , Geoffrey Sinclair writes snip Method 3: making the shell body part of a resonant circuit and detecting frequency changes. Should be fun lugging the fused shells around metal guns. IIRC the fuse was inactive until fired. The shock of firing broke a glass cell containing the battery acid, the battery then produced the required voltage. The initial fuses that entered service used a 'normal' battery. It worked quite well however the batteries would degrade in only a few months hence the above batteries were developed. Nose mounted wind turbine driven generators were also used in experimental shells but were rejected, probably for cost reasons. The German electrostatic influence fuse used a battery. I don't know what battery technology they used. Mike -- M.J.Powell |
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