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TheFan broadband noise usual and affordable way to predict broadband noise generated by aero-engine fans relies on empirical correlations established by NASA since the 70’s. The present contribution depicts an alternative approach, based on analytical models for the noise sources and their aerodynamic key driving parameters. A simple new physical loss model suited for slender fan blades improves the prediction of aerodynamic stage performance and the rotor wake size, as well as providing a much more realistic sensitivity of fan broadband noise to incidence and working line variations.

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Fast Prediction of Fan Broadband Noise with an Analytical Aerodynamic Model Suited for Transonic Rotor Blades

  • 章节

  • 发表日期：

    2026年

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  • Antoine Moreau,
  • Robert Meier zu Ummeln

摘要

TheFan broadband noise usual and affordable way to predict broadband noise generated by aero-engine fans relies on empirical correlations established by NASA since the 70’s. The present contribution depicts an alternative approach, based on analytical models for the noise sources and their aerodynamic key driving parameters. A simple new physical loss model suited for slender fan blades improves the prediction of aerodynamic stage performance and the rotor wake size, as well as providing a much more realistic sensitivity of fan broadband noise to incidence and working line variations.