Developing a comprehensive noise prediction system for generating noise abatement procedures

Mrunali Botre, Kenneth Brentner, Joseph Horn, Daniel Wachspress

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

A comprehensive noise prediction system is required to analyze and develop noise abatement procedures for rotorcraft. Most of the prediction tools used for designing noise abatement procedures are based on some experimental data or empirical relations and lack the sophistication required for detailed analysis of different noise sources. This paper describes a rotorcraft noise prediction system and the development to incorporate time-dependent information – including trajectory, attitude, blade loads and rotor thrust – for predicting noise generated during a complex maneuver. The system features and capability are demonstrated by calculating sound exposure level contours and analyzing the individual noise components. The noise component analysis shows that the new features have a significant impact on the predicted noise and help to improve the prediction accuracy. Validation of the noise prediction system is also performed for steady descent and turning descent flight conditions.

Original languageEnglish (US)
Title of host publication25th AIAA/CEAS Aeroacoustics Conference, 2019
Publisher[publishername] American Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105883
DOIs
StatePublished - Jan 1 2019
Event25th AIAA/CEAS Aeroacoustics Conference, 2019 - Delft, Netherlands
Duration: May 20 2019May 23 2019

Publication series

Name25th AIAA/CEAS Aeroacoustics Conference, 2019

Conference

Conference25th AIAA/CEAS Aeroacoustics Conference, 2019
CountryNetherlands
CityDelft
Period5/20/195/23/19

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All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics
  • Electrical and Electronic Engineering
  • Aerospace Engineering

Cite this

Botre, M., Brentner, K., Horn, J., & Wachspress, D. (2019). Developing a comprehensive noise prediction system for generating noise abatement procedures. In 25th AIAA/CEAS Aeroacoustics Conference, 2019 (25th AIAA/CEAS Aeroacoustics Conference, 2019). [publishername] American Institute of Aeronautics and Astronautics Inc, AIAA. https://doi.org/10.2514/6.2019-2617