Most airplanes in the world have vertical tails or rudders to prevent Dutch roll instabilities, a combination of yawing and sideways motions with rolling that looks a bit like the movements of a ...
John Bird, Ph.D., and Afroza Shirin, Ph.D., stand with a model aircraft used in their research on soaring. With a new grant from DARPA, the two are using insights from bird flight to develop uncrewed ...
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