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.
Aeroacoustic Characteristics of a Quadcopter Impeller in Vertical Take-Off and Landing Mode
Russ. Aeronaut.
Russian Aeronautics ; 64 , 4 ; 661-669
2021-10-01
9 pages
Article (Journal)
Electronic Resource
English
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