COMPUTATION OF DYNAMIC RESPONSE FOR THE BIRD IMPACT ON HELICOPTER BLADE

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Journal of Vibration and Shock ›› 2013, Vol. 32 ›› Issue (10) : 62-68.

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COMPUTATION OF DYNAMIC RESPONSE FOR THE BIRD IMPACT ON HELICOPTER BLADE

LIN Chang-liang1 WANG Yi-feng2 WANG Hao-wen3 CHEN Ren-liang1 SHANG Xiao-dong4

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Abstract

The steady-state response of the helicopter rotor in flight is solved by using its comprehensive aeroelastic analysis program. The result is then used for the initial state of bird impact on the blade. The bird impact dynamic equation of helicopter rotor blade is established by adopting non-linear fluid-solid coupling algorithm. Finally the dynamic response of blades is solved by using direct numerical integration method.To provide some theoretical basis for the anti-bird impact on helicopter blade design, the system parameters such as bird speed、bird quality、impact position、blade root constraint and rotation speed were discussed in the paper.

Key words

helicopter / bird impact / blade / dynamic response / fluid-structure coupling

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LIN Chang-liang WANG Yi-feng WANG Hao-wen CHEN Ren-liang SHANG Xiao-dong. COMPUTATION OF DYNAMIC RESPONSE FOR THE BIRD IMPACT ON HELICOPTER BLADE[J]. Journal of Vibration and Shock, 2013, 32(10): 62-68