Structural Dynamic Analysis of Low Vibrating Composite Helicopter Rotor Blades

복합재료 헬리콥터 로터 블레이드의 저진동 설계에 관한 연구

Recently, the composite materials are widely used for manufacturing the helicopter rotor blades. furthermore, composites show great potential on the design of rotor blades due to the advantages of strength, durability and weight of the materials. To keep with this advantages, it is necessary to calculate natural frequencies of a rotating blades for avoiding resonance. In this paper, the structural design process of airfoil cross section is introduced, and natural frequencies of composite rotor blades with variable rpm we investigated.