At the start of World War Two anti aircraft guns were virtually ineffective against enemy aircraft. Esitimates were that between one and twenty thousand shells were fired for each plane shot down. The problem was getting the shell to ...See moreAt the start of World War Two anti aircraft guns were virtually ineffective against enemy aircraft. Esitimates were that between one and twenty thousand shells were fired for each plane shot down. The problem was getting the shell to explode when it was close to the plane. A successful top secret project produced the proximity fuse which proved effect not just against aircraft but against ground targets when used in aerial bombs and artillery shells set to air burst. Written by
David Foss
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