치누크 지상 공진 실험 [후방 촬영] ◀
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3,641 조회 ㆍ 11년 전 업로드 #치누크  #지상  #공진

his can happen on any multi-blade articulated rotor helicopter but is most likely to occur on 3 blade machines. The blades are free to lead and lag to accomodate the dynamic forces as they go around (there ...