Journal of Aerospace System Engineering (항공우주시스템공학회지)

The Society for Aerospace System Engineering (항공우주시스템공학회)
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Structural Optimum Design of Composite Rotor Blade

복합재 로터 블레이드의 구조 최적설계

  • 박정진 (한국항공대학교 항공우주 및 기계공학부) ;
  • 이민우 (한국항공대학교 항공우주 및 기계공학부) ;
  • 배재성 (한국항공대학교 항공우주 및 기계공학부) ;
  • 이수용 (한국항공대학교 항공우주 및 기계공학부) ;
  • 김석우 (한국에너지기술연구원)
  • Published : 2007.12.01
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Abstract

This paper addresses a method for structural optimum design of composite rotor blade. The basic model of a composite helicopter main rotor blade is designed and its parameters determining the structural/dynamic properties are studied. Through the investigation of flap/lag/torsional stiffness, the structural properties of the model are analyzed. In this study, helicopter rotor blades are analyzed by using VABS. The computer program VABS (Variational Asymptotic Beam Section Analysis) uses the variational asymptotic method to split a three-dimensional nonlinear elasticity problem into a two dimensional cross-sectional analysis and a one-dimensional nonlinear beam problem. This is accomplished by taking advantage of certain small parameters inherent to beam-like structures. In addition, the rotational stability of the blade is estimated by the frequency diagram from FE analysis(MSC.Patran/Nastran) to understand its vibrational property. From the result, design parameters to determine and optimize the properties of the model are presented.

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