A maneuvering flight noise model for helicopter mission planning

Eric Greenwood, Robert Rau, Benjamin May, Christopher Hobbs

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

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)
Pages (from-to)57-66
Number of pages10
JournalAnnual Forum Proceedings - AHS International
Volume1
Issue numberJanuary
StatePublished - Jan 1 2015

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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