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- W4317584120 abstract "As the number of UAV applications increases so will the noise regulations in populated areas. One of the main sources of noise from UAV rotors is trailing edge noise. It has been shown that serrations in the trailing edge can modify the flow locally and reduce the noise. However, direct/hybrid acoustic calculations are often lengthy and cannot be implemented in a design loop. In this study, a fast, broadband noise prediction method for a propeller with a serrated trailing edge is presented. The method is based on the extension of Ayton’s model to include the effects of a finite span and rotation as proposed by Li and Lee. It only requires boundary layer parameters extracted after a RANS simulation, these parameters are the input to the acoustic software PyFanNoise which is modified to account for serrated trailing edges. The results show that by mixing different serrations of variable height along the span, the far-field acoustics can be tailored and provide insight into optimal serration shapes to maximize noise control." @default.
- W4317584120 created "2023-01-21" @default.
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- W4317584120 date "2023-01-19" @default.
- W4317584120 modified "2023-10-18" @default.
- W4317584120 title "Fast Broadband Noise Prediction of Serrated UAV Rotors in Hover" @default.
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- W4317584120 doi "https://doi.org/10.2514/6.2023-0618" @default.
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