Nano Hummingbird UAV Takes Flight

An unmanned aerial vehicle that mimics a hummingbird in size, appearance and propulsion has finally been unveiled. AeroVironment Inc, a US company that specialises in unmanned air systems, developed the NAV prototype after being awarded a Phase II contract by DARPA in 2008. At a cost of $4 million, the remote vehicle – appropriately named ‘Hummingbird’ after its biological forebear – beats its wings to remain airborne, can manoeuvre in all directions, and is...
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