On determining the acoustic properties of main helicopter rotor models on an open test bench


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The paper presents the results of experimental studies on developing a technique to determine the acoustic properties of models of main helicopter rotors on an open test bench. The method of maximum length sequences is used to choose the optimum arrangement of microphones for an open test bench that would minimize the influence of parasitic echo. The results of processing the data of an acoustic experiment with a model rotor are detailed.

作者简介

V. Kop’ev

Central Aerohydrodynamic Institute; Perm National Research Polytechnical University

编辑信件的主要联系方式.
Email: aeroacoustics@tsagi.ru
俄罗斯联邦, ul. Radio 17, Moscow, 105005; Komsomol’skii pr. 29, Perm, 614990

M. Zaitsev

Central Aerohydrodynamic Institute; Perm National Research Polytechnical University

Email: aeroacoustics@tsagi.ru
俄罗斯联邦, ul. Radio 17, Moscow, 105005; Komsomol’skii pr. 29, Perm, 614990

N. Ostrikov

Central Aerohydrodynamic Institute; Perm National Research Polytechnical University

Email: aeroacoustics@tsagi.ru
俄罗斯联邦, ul. Radio 17, Moscow, 105005; Komsomol’skii pr. 29, Perm, 614990

S. Denisov

Central Aerohydrodynamic Institute

Email: aeroacoustics@tsagi.ru
俄罗斯联邦, ul. Radio 17, Moscow, 105005

S. Makashov

Central Aerohydrodynamic Institute

Email: aeroacoustics@tsagi.ru
俄罗斯联邦, ul. Radio 17, Moscow, 105005

V. Anikin

Kamov Design Bureau

Email: aeroacoustics@tsagi.ru
俄罗斯联邦, Krasnopresnenskaya nab. 12, Moscow, 123610

V. Gromov

Kamov Design Bureau

Email: aeroacoustics@tsagi.ru
俄罗斯联邦, Krasnopresnenskaya nab. 12, Moscow, 123610

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