Journal of Aerospace System Engineering (항공우주시스템공학회지)

The Society for Aerospace System Engineering (항공우주시스템공학회)
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Computation of Unsteady Aerodynamic Forces in the Time Domain for GVT-based Ground Flutter Test

지상 플러터 실험을 위한 시간 영역에서의 비정상 공기력 계산

  • Lee, Juyeon (Dept. of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Kim, Jonghwan (Dept. of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Bae, Jaesung (School of Aerospace and Mechanical Engineering, Korea Aerospace University)
  • 이주연 (한국항공대학교 항공우주 및 기계공학과) ;
  • 김종환 (한국항공대학교 항공우주 및 기계공학과) ;
  • 배재성 (한국항공대학교 항공우주 및 기계공학부)
  • Received : 2015.12.21
  • Accepted : 2016.03.29
  • Published : 2016.03.31
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Abstract

Flutter wind-tunnel test is an expensive and complicated process. Also, the test model may has discrepancy in the structural characteristics when compared to those of the real model. "Dry Wind-Tunnel" (DWT) is an innovative testing system which consists of the ground vibration test (GVT) hardware system and software which computationally can be operated and feedback in real-time to yield rapidly the unsteady aerodynamic forces. In this paper, we study on the aerodynamic forces of DWT system to feedback in time domain. The aerodynamic forces in the reduced-frequency domain are approximated by Minimum-state approximation. And we present a state-space equation of the aerodynamic forces. With the two simulation model, we compare the results of the flutter analysis.

Keywords

References

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