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22nd December 2008, 15:48
Boeing said its A160 Turbine (A160T) Hummingbird unmanned rotorcraft shifted gears in flight and surpassed 100 flight hours. “Being able to shift gears in flight is the final significant step in realizing the full potential of our...
Read more... (http://www.aviationtoday.com/categories/military/28560.html)
Read more... (http://www.aviationtoday.com/categories/military/28560.html)