Synthesis of rotor BVI noise active controller through efficient aerodynamics/aeroacoustics solver
| Autor: | Massimo Gennaretti, Claudio Testa, Giovanni Bernardini, Alessandro Anobile |
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| Přispěvatelé: | Anobile, A, Bernardini, Giovanni, Testa, C, Gennaretti, Massimo |
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| Zdroj: | Scopus-Elsevier 20th AIAA/CEAS Aeroacoustics Conference, Atlanta, 16-20 Giugno 2014 info:cnr-pdr/source/autori:Anobile, Alessandro; Bernardini, Giovanni; Testa, Claudio; Gennaretti, Massimo/congresso_nome:20th AIAA%2FCEAS Aeroacoustics Conference/congresso_luogo:Atlanta/congresso_data:16-20 Giugno 2014/anno:2014/pagina_da:/pagina_a:/intervallo_pagine |
| Popis: | This paper presents an efficient computational process for the synthesis of a low-frequency controller aimed at reducing helicopter rotor BVI noise by application of the active twist rotor (ATR) concept. It is based on an optimal, multi-cyclic, control approach where distributed torque loads actuated by smart materials are used to twist rotor blades at the 2/rev frequency. Rotor simulations are obtained by combining aerodynamic, aeroelastic and aeroacoustic tools able to capture wake-blade miss distance, which plays a crucial role in BVI noise emission. Its modification is the main objective of the controller action proposed. The control law is identified through a numerically efficient aeroacoustic solver based on analytical-numerical sectional aerodynamics modelling. Numerical investigations present validation of the proposed low-frequency BVI controller by examining its performance in applications concerning with descent flight of helicopter rotors. |
| Databáze: | OpenAIRE |
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