Dynamic Characteristic Study of Hingeless Blade Stiffness Reinforcement for Bearingless Rotor Whirl Tower Test

무베어링 로터 훨타워 시험을 위한 무힌지 블레이드 강성보강에 따른 동특성 연구

  • 김태주 (한국항공우주연구원 회전익기술팀) ;
  • 윤철용 (한국항공우주연구원 회전익기술팀) ;
  • 기영중 (한국항공우주연구원 회전익기술팀) ;
  • 김승호 (한국항공우주연구원 회전익기술팀) ;
  • 정성남 (건국대학교 항공우주정보시스템공학과)
  • Published : 2012.04.26


During helicopter rotor system development process, whirl tower test is conducted basically. For conducting whirl tower test during bearingless hub development process, design new blade or using existing blade with repair or remodeling. Because simple shape and efficient aerodynamic characteristic, BO-105 blade is used for hub system development widely. Originally BO-105 blade is used for hingeless hub, ho flap stiffness and lag stiffness on blade root area is relatively low. So applying BO-105 blade to bearingless hub whirl tower test, root area have to be reinforce. In this process, blade root area's section property will be changed. In this paper, suggest reinforcement method of BO-105 blade root area and study dynamic characteristic of bearingless rotor system with reinforcement BO-105 blade.