Abstract
Abstract : In this study, the finite element analysis was carried out to investigate dynamic characteristics of the AGF(Active Gurney Flap) which is under development for reducing vibration and noise of the helicopter rotor system. The Gurney flap is a kind of small flat plate, mounted normal to the lower surface of the airfoil near to the trailing edge. An electric motor, L-shaped linkages and flap parts were integrated into a rotor bade, and 3~5/rev control was given to the AGF to reduce the vibration in the fixed frame. Thus, an explicit time integration method was adopted to investigate the dynamic response of the AGF with considering both centrifugal force due to the rotor rotation and active control input, and it can be seen that the vertical displacement of the AGF was satisfied to meet the design requirement. § 이 논문은 대한기계학회 2014년도 추계학술대회(2014. 11. 11-14., 김대중컨벤션센터) 발표내용을 토대로 한 논문임. † Corresponding Author, naltlguy@kari.re.kr Ⓒ 2015 The Korean Society of Mechanical Engineers
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