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2013•Unpublished venueRequires access

Computation of dynamic response of helicopter blade under bird impact

Shang XiaoDong

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Abstract

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

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What this paper is about

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

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Available abstract

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

Key concepts: Helicopter rotor, Aeroelasticity, Blade (archaeology), Computation, Rotor (electric), Constraint (computer-aided design), Engineering, Aerodynamics

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