In some cases, a pilot discovering damage to an airplane involves noticing a frightening thump on the hull. That may indicate that something is wrong, but not what or where. On the other hand, when human beings are injured, the network of nerves in the skin tell us almost exactly where and what is wrong. Stealing a march on nature, BAE Systems' Advanced Technology Centre is working on a "smart skin" that covers the fuselage of an aircraft with thousands of microsensors to send back a wide variety of detailed information in real time


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