TY - JOUR
T1 - Blade planform optimization to reduce HSI noise of helicopter in hover
AU - Yang, Choongmo
AU - Aoyama, Takashi
AU - Chae, Sanghyun
AU - Yee, Kwanjung
AU - Jeong, Shinkyu
AU - Obayashi, Shigeru
PY - 2008/8/28
Y1 - 2008/8/28
N2 - 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 aerodynamic part, CFD calculation is conducted to solve three dimensional unsteady Euler equations. As for the optimization method, sequential quadratic programming as a gradient optimization method and Kriging-based GA model as a non-gradient optimization method are used according to the different problem definition. Based on our previous research, objective functions, design variables and constraints are determined for arbitrary blade planform during optimization process. The result shows that the optimized blade planform can reduce HSI noise by supressing the strong shock wave from being generated on blade surface and being propagated to farfield flow region.
AB - 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 aerodynamic part, CFD calculation is conducted to solve three dimensional unsteady Euler equations. As for the optimization method, sequential quadratic programming as a gradient optimization method and Kriging-based GA model as a non-gradient optimization method are used according to the different problem definition. Based on our previous research, objective functions, design variables and constraints are determined for arbitrary blade planform during optimization process. The result shows that the optimized blade planform can reduce HSI noise by supressing the strong shock wave from being generated on blade surface and being propagated to farfield flow region.
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M3 - Conference article
AN - SCOPUS:50049110503
VL - 3
SP - 2218
EP - 2232
JO - Annual Forum Proceedings - AHS International
JF - Annual Forum Proceedings - AHS International
SN - 1552-2938
T2 - 64th Annual Forum - AHS International
Y2 - 29 April 2008 through 1 May 2008
ER -