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A Parameter Identification Method for Helicopter Noise Source Identification and Physics-Based Semiempirical Modeling

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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.
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Document Type: Research Article

Publication date: July 1, 2018

This article was made available online on June 6, 2018 as a Fast Track article with title: "A Parameter Identification Method for Helicopter Noise Source Identification and Physics-Based Semiempirical Modeling".

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  • The Journal of the AHS is the world's only scientific journal dedicated to vertical flight technology. It is a peer-reviewed technical journal published quarterly by The Vertical Flight Society and presents innovative papers covering the state-of-the-art in all disciplines of VTOL design, research and development. (Please note that VFS members receive significant discounts on articles and subscriptions.)

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