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As a moth flaps its wings, a vortex is generated on the leading edge of the wing. The flapping motion allows the vortex to remain attached and provide a lifting force. It is thought that the lifting force from the vortex is what allows moths and other animals with flapping wings to fly and hover. By studying the kinematic motions and the flow structures associated with flapping flight, the efficiency and capabilities of flapping micro air vehicles can be improved and expanded.HawkMothFF1-1024x217