First Flapping, Two-Winged Aircraft Takes Flight

From Discovery News Top Stories : Discovery Channel:

The world's first successful flight of a self-powered, rudderless, flapping aircraft has been achieved by engineers from AeroVironment. The NAV, or nano air vehicle, operates by using two flapping wings, which also function as the rudder, elevators, ailerons and engine. With its two wings, the NAV is able to hover, move forward and backwards, and change its elevation. In flight, the NAV almost appears to replicate the movements of a hummingbird.

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