Journal of Aerospace System Engineering (항공우주시스템공학회지)

The Society for Aerospace System Engineering (항공우주시스템공학회)
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Downward Load Prediction and Reduction Strategy for QTP UAV

  • Park, Youngmin (Aeronautics Technology Research Division, Korea Aerospace Research Institute) ;
  • Choi, Jaehoon (Aeronautics Technology Research Division, Korea Aerospace Research Institute) ;
  • Lee, Hakmin (Aeronautics Technology Research Division, Korea Aerospace Research Institute) ;
  • Kim, Cheolwan (Aeronautics Technology Research Division, Korea Aerospace Research Institute)
  • Received : 2020.08.06
  • Accepted : 2020.11.02
  • Published : 2021.04.30
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Abstract

The propeller wake of tiltrotor-type aircrafts, such as TR-60 and quad tilt propeller (QTP) UAV, in hover substantially impinges the upper surface of the primary wing and generates a downward load. This load is directly proportional to the thrust of the propeller and reduces the available payload. Therefore, wing and nacelle mechanisms should be carefully designed to reduce downward load. This study conducted a numerical analysis of the rotating propeller in hover to predict the downward load of a QTP UAV. An unsteady three-dimensional Navier-Stokes solver was used along with a sliding mesh for the simulation of the rotating propeller. To reduce the downward load, the tilting mechanisms of the partial wing and nacelle were simultaneously introduced and numerically analyzed. Finally, the downward load was predicted by 14% of isolated propeller thrust; further, the downward load could be reduced by adopting the partial wing and nacelle tilting concept.

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References

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