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    • 4 axis helicopters (con rotor) 

      Udompong, Natthawut; Cheewharungrueamgku, Piyapong; Sirikhemapoorn, Thanawut (2018-07-22)
      Four core helicopter project (Con Rotor) that coordinates with a GPS unit with a survey prepared for aerial photography and GPS positioning system with GPS and the flight logs with GPS. Making helicopter 4 cores with ...