International Journal of Aeronautical and Space Sciences

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Numerical Study of Blade-Vortex Interaction (BVI) Noise Capturing

  • Tanabe, Yasutada (Aviation Program Group, Japan Aerospace Exploration Agency (JAXA)) ;
  • Saito, Shigeru (Aviation Program Group, Japan Aerospace Exploration Agency (JAXA)) ;
  • Takasaki, Keisuke (Graduate School of Science and Technology, Nihon University) ;
  • Fujita, Hajime (Research Institute of Science, Nihon University)
  • Published : 2008.11.30
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Abstract

The noise is one of the serious problems concerning helicopters operations. The issue of helicopter external noise generated mainly from a helicopter rotor has always affected the use of rotorcrafts, especially in the urban environment. The noise sources depend on the flight configurations. In particular, a noise generated by the interaction between blades and tip vortices mainly occurs during descent flight. This noise is called blade-vortex interaction (BVI) noise, and this BVI noise is particularly penalizing for helicopters. In this paper, a numerical study to capture the BVI noise is carried out. The numerical study is performed in two phases. In the first phase, a 2D simulation based on parallel BYI event of Kitapliglu et al experiment is performed. In the second phase, 3D simulation based on HART Ⅱ experiment is performed. Several experimental data such as thrust, torque, blade sectional load, its derivative and vortex location are compared with calculation results and the comparison showed reasonably good agreement.

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References

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