International Journal of Aeronautical and Space Sciences

  • 제18권3호
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  • Pages.498-511
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  • 2017
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  • 2093-274X(pISSN)
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  • 2093-2480(eISSN)
한국항공우주학회 (The Korean Society for Aeronautical and Space Sciences)
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Validation of Loads Analysis for a Slowed Rotor at High Advance Ratios

  • Park, Jae-Sang (Department of Aerospace Engineering, Chungnam National University)
  • 투고 : 2017.04.15
  • 심사 : 2017.09.11
  • 발행 : 2017.09.30
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초록

This work conducts a validation study for loads analysis of the UH-60A slowed rotor at high advance ratios. The nonlinear flexible multibody dynamics analysis code, DYMORE II, is used with a freewake model for the rotorcraft comprehensive analysis. Wind tunnel test data of airloads and structural loads of a full-scale UH-60A slowed rotor are used for this validation study. This analysis predicts well the thrust reversal phenomenon at the advance ratio of 1.0. The section airloads such as normal forces and pitching moments and the oscillatory blade structural moments in this analysis are compared well or moderately with the measured data, although the higher harmonics components of blade torsion moments are not captured well. This validation study assesses the prediction accuracy and investigates the unique aeromechanics characteristics of a slowed rotor at high advance ratio.

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참고문헌

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