Journal of KSNVE (소음진동)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Rotating Frequency Analysis of a Helicopter Rotor Blade with Swpt Tips

후퇴각 날개끝이 있는 헬리콥터 로터깃의 회전주파수 해석

  • 황호연 (세종대학교 기계항공우주공학부) ;
  • ;
  • 정건교 (울산대학교 대학원 항공우주공학과)
  • Published : 2000.04.01
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Abstract

To reduce the drag rise on the advancing helicopter rotor blade tips, the tip of the blade is modified to have sweep, anhedral and pretwist. The equations of motion of rotor blade with these tip angles were derived using Hamilton principle, programmed using FORTRAN and named as ARMDAS(Advanced Rotorcraft Multidisplinary Design and Analysis System). Rotating frequency analysis of rotor blades with swept tipe was performed that is necessary in conceptual and preliminary design phases of the helicopter design. Vibration analysis of non-rotating blades was also accomplished and compared with MSC/NASTRAN resutls for the basis of comparison with the vibration test data. The rotating frequency analysis of blades with an actual rotor blade data was also performed to verify coded program and to check the possibility of a resonance of an actual rotor blade at the specific rotating speed.

Keywords

References

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