Airbus has test-flown AlbatrossOne, a scale-model aircraft inspired by albatrosses, featuring flapping wingtips. These "semi-aeroelastic hinge" wingtips are designed to react to turbulence and wind ...

A bird migrating with others in a V formation turns out to be a master of the well-timed flap, able to match the up-and-down path traced by the wing tip of the bird in front of it. Fighter pilots know ...