International Journal of Aerospace System Engineering

The Society for Aerospace System Engineering (항공우주시스템공학회)
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Identification of Aerodynamic Model CFD-Based for Gust Response Analysis

  • Nie, Xueyuan (Key Laboratory for Mechanics in Fluid Solid Coupling Systems of Institute Mechanics, Chinese Academy of Sciences) ;
  • Yang, Guowei (Key Laboratory for Mechanics in Fluid Solid Coupling Systems of Institute Mechanics, Chinese Academy of Sciences)
  • Received : 2015.05.26
  • Accepted : 2015.06.15
  • Published : 2015.06.30
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Abstract

Aeroelastic gust response analysis plays an important role in design of aircrafts. For gust response analysis, frequency domain aerodynamics method has been typically used with generalized aerodynamic influence coefficient matrices at various reduced frequencies. However, it cannot be applied to the aeroservoelastic analysis, such as gust alleviation control. Time-domain state space (SS) models must be built. It attacks little attention that gust response analysis relies on continuous gust time-domain input signal in terms of its PSD function. The aim the current study is to provide a reduced-order modeling (ROM) method based on CFD to model gust responses for continuous gust responses for continuou gust inputs in time domain. The paper analyzed the gust response of AGARD445.6 wing subjected to the Dryden gust with ROMs and compared the difference between the rigid structure and elastic one. The results demonstrate that structure elastic effect effect should be considered in the design of aircraft.

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References

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