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Nervous flyers

发布时间:2019-03-07 03:12:01来源:未知点击:

By Barry Fox Scientists at the Porton Down chemical and biological defence centre in Wiltshire are worried about nerve gas attacks affecting aircraft (WO 01/07118). If the gas is released into the atmosphere ahead of a plane, the engine’s air intakes sucks in the poison and the air-conditioning system distributes it around the cabin. No system currently available gives protection, admits Porton Down. Conventional carbon filters are destroyed by the engine heat. To counter the gas, Porton Down uses a filter made of zeolite crystals impregnated with copper or chromium. This can handle the engine heat, and filters sarin,