Abstract
To determine the aeroacoustic characteristics of a quadcopter, large eddies of a turbulent flow induced by a four-blade impeller are simulated. The acoustic analogy method based on the integration of the Ffowcs Williams–Hawkings equation is used to calculate the acoustic noise in the far field. A spectral analysis of the acoustic noise generated by the impeller is performed, and the directional patterns of acoustic radiation are plotted for various rotor rotation speeds that simulate the vertical take-off and landing modes.
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ACKNOWLEDGEMENTS
This work was supported by the Ministry of Science and Higher Education of the Russian Federation during the implementation of the project “Fundamental Foundations of Mechanics, Monitoring and Control Systems for Unmanned Aircraft Systems with Shaping Structures Deeply Integrated with Power Plants, and Unique Properties Not Used Today in Manned Aviation”, no. FEFM-2020-0001.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Aviatsionnaya Tekhnika, 2021, No. 4, pp. 66 - 73.
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Denisenko, P.V., Bulat, P.V., Chernyshov, P.S. et al. Aeroacoustic Characteristics of a Quadcopter Impeller in Vertical Take-Off and Landing Mode. Russ. Aeronaut. 64, 661–669 (2021). https://doi.org/10.3103/S1068799821040103
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DOI: https://doi.org/10.3103/S1068799821040103