A strange helicopter has been making test flights in the south of France. Built by French company Airbus Helicopters, it looks a bit like what would happen if a regular helicopter and an airplane ...
Half-breed: Piasecki Aircraft has taken a Sikorsky helicopter and bolted on airplane hardware — a propeller (ducted) and a fixed wing — hoping the resulting X-49A SpeedHawk (top) will bust through the ...
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