A maneuvering flight noise model for helicopter mission planning

Eric Greenwood, Robert Rau

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


A new model for estimating the noise radiation during maneuvering flight is developed in this paper. The model applies the quasi-static acoustic mapping (Q-SAM) method to a database of acoustic spheres generated using the fundamental rotorcraft acoustics modeling from experiments (FRAME) technique. A method is developed to generate a realistic flight trajectory from a limited set of waypoints and is used to calculate the quasi-static operating condition and corresponding acoustic sphere for the vehicle throughout the maneuver. By using a previously computed database of acoustic spheres, the acoustic impact of proposed helicopter operations can be rapidly predicted for use in mission planning. The resulting FRAME-QS model is applied to near-horizon noise measurements collected for the Bell 430 helicopter undergoing transient pitch-up and roll maneuvers, with good agreement between the measured data and the FRAME-QS model.

Original languageEnglish (US)
Article number022007
JournalJournal of the American Helicopter Society
Issue number2
StatePublished - Apr 2020

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Aerospace Engineering
  • Mechanics of Materials
  • Mechanical Engineering


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