Unsteady Aerodynamics

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Science  18 Jun 1999:
Vol. 284, Issue 5422, pp. 1937-1939
DOI: 10.1126/science.284.5422.1937

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Why are flies and birds much more maneuverable than airplanes? In his Perspective, Dudley explains current thinking about the biomechanics of insect flight. He highlights a report in this issue ( Dickinson et al.) of a robotic fly that reproduces many of the flight characteristics of its living counterpart and reveals unexpected force generation at the ends of the up- and downstrokes.