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An unmanned aircraft made from "printed" parts rather than traditional machine-tooled components has been unveiled at the Farnborough Air Show, UK.
Developed at Lockheed Martin's top-secret "Skunk Works" research facility in Palmdale, California, US, the Polecat unmanned aerial vehicle (UAV) is a 28-metre flying wing, weighing four tonnes. It was designed in part to test cheaper manufacturing technologies.