International Journal of Aeronautical and Space Sciences

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Handling Quality Improvements of Fly-By-Wire Helicopter using Combined Model Following Controller with Decoupler

  • Lee, Jangho (Department of Aerospace Engineering, Korea Advanced Institute of Science and Technology) ;
  • Kim, Eung-Tai (Flight Control Team, Korea Aerospace Research Institute) ;
  • Ryu, Hyeok (Flight Control Team, Korea Aerospace Research Institute) ;
  • Shim, Hyunchul (Department of Aerospace Engineering, Korea Advanced Institute of Science and Technology)
  • Received : 2017.04.07
  • Accepted : 2017.05.15
  • Published : 2017.06.30
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Abstract

The combined model following control (MFC)-decoupler system is employed for a full authority fly-by-wire utility helicopter to enhance handling qualities. The MFC, which governs the vehicle to follow the prescribed model, is widely employed for modern helicopters. However, it may not be sufficient as helicopters often suffer significant cross coupling. The coupled responses between control axes of a helicopter increase the pilot's work load and may degrade handling qualities. As the decoupler is introduced to the MFC, the combined MFC-decoupler effectively solves the coupling problems and enhances handling qualities. The proposed system is verified via the handling qualities prediction using the mathematical dynamics model. The analysis results are confirmed through the piloted simulation.

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References

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