Flapping-wing robo-bird uses two tails to fly fast or slow Many readers will remember the MetaFly, a remote-control robotic insect that flies by actually flapping its wings. Well, its inventor is back ...
Engineers found a way to help airplanes avoid stall with lightweight plastic flaps that flutter with pressure changes. The flaps mimick a class of feathers that are key to birds' most daring aerial ...
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