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Acoustic Analysis for Conceptual Design via Comprehensive Analysis

Matthew W. Floros, Phuriwat Anusonti-Inthra, George Jacobellis, Michael Avera, DEVCOM Army Research Lab

May 10, 2022

https://doi.org/10.4050/F-0078-2022-17481

Abstract:
A process for estimating acoustic performance of rotorcraft from conceptual design is presented. A comprehensive analysis model is automatically generated from the conceptual design, and the higher-fidelity aerodynamic loads and blade motions are taken as inputs to an acoustic propagation tool. Five example configurations were tested to demonstrate the ability to process arbitrary vertical lift configurations including single or multiple rotors and wings. Selected comparisons of thrust, torque, flapping, and control angles are presented to illustrate the consistency between the conceptual and comprehensive models. Acoustic predictions were made for the configurations, and each configuration exhibited unique noise characteristics. The configurations exhibited varying directivity patterns and different relative contributions from thickness, loading, and broadband noise, as well as different contributions from the different rotors in each model.


Acoustic Analysis for Conceptual Design via Comprehensive Analysis

  • Presented at Forum 78
  • 15 pages
  • SKU # : F-0078-2022-17481
  • Aircraft Design I

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Acoustic Analysis for Conceptual Design via Comprehensive Analysis

Authors / Details:
Matthew W. Floros, Phuriwat Anusonti-Inthra, George Jacobellis, Michael Avera, DEVCOM Army Research Lab