Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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BLADE PLANFORM OPTIMIZATION FOR HSI NOISE REDUCTION OF HELICOPTER

헬리콥터의 고속충격소음 감소를 위한 블레이드 평면형상 최적화

  • 채상현 (부산대학교 항공우주공학과 대학원) ;
  • 양충모 (일본항공우주연구개발기구 수치해석그룹) ;
  • 정신규 (일본동북대학교 유체과학연구소) ;
  • ;
  • ;
  • 이관중 (부산대학교 항공우주공학과)
  • Published : 2009.03.31
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Abstract

The objective of this research is to design blade planform to reduce high speed impulsive(HSI) noise from a non-lifting helicopter rotor using CFD method and optimization techniques. As for the aero-acoustic analysis, CFD technique for aerodynamic analysis and Kirchhoff's method for the acoustic analysis were used. As for the optimization method, Kriging-based genetic algorithm(GA) model as a high-fidelity optimization method was chosen. Design variables and constraints are determined for arbitrary blade planform. The result shows that the optimized blade planform with high swept-back and taper ratio can reduce HSI noise by suppressing generation of the strong shock wave on blade surface and propagation of the noise to the farfield flow region.

Keywords

References

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