A parameter identification method for helicopter noise source identification and physics-based semiempirical modeling

Eric Greenwood, Fredric H. Schmitz

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

A new physics-based parameter identification method for rotor harmonic noise sources is developed using an acoustic inverse simulation technique. This new method allows for the identification of individual rotor harmonic noise sources and allows them to be characterized in terms of their individual nondimensional governing parameters. This new method is applied to both wind tunnel measurements and ground noise measurements of two-bladed rotors. The method is shown to match the parametric trends of main rotor blade–vortex interaction (BVI) noise, allowing accurate estimates of BVI noise to be made for operating conditions based on a small number of measurements taken at different operating conditions.

Original languageEnglish (US)
JournalJournal of the American Helicopter Society
Volume63
Issue number3
DOIs
StatePublished - Jul 2018

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Aerospace Engineering
  • Mechanics of Materials
  • Mechanical Engineering

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