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Uploaded on Jul 1, 2009
AeroVironment video showing progress with testing of a tiny flapping-wing "nano air vehicle" (NAV) designed to fly indoors. Testing culminated in a 20sec flight of an interim test vehicle, called Mercury, which demonstrated controlled hovering flight using a pair of flapping wings for propulsion and control. AeroVironment is now building a prototype for DARPA that will be samller, lighter and will closley resemble a hummingbird.