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- W3038932475 abstract "In recent years, small unmanned aerial vehicles (sUAV) have increased in availability and use in both public and commercial sectors. This increased use has the unfortunate consequence of introducing excessive noise into communities where the sUAV operate. With electric propulsion, the primary source of noise is the rotor/propeller used in contemporary multi-rotor configurations. In this paper, the aerodynamic and acoustic behavior of various swept propellers are examined with computational and experimental methods. We found the computational results suggested a slight increase in noise for swept propellers, but the thickness noise can be shaped by sweeping the blade. The aerodynamic tests showed no reduction in efficiency for any of the swept propellers, opening a path for acoustic optimization including blade sweep as a variable. The acoustic experiment, which was conducted outside, suggested tonal noise drops because of blade sweep. Testing should be conducted in anechoic wind tunnel before any definitive conclusions can be drawn from the acoustic experiments." @default.
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- W3038932475 date "2021-01-04" @default.
- W3038932475 modified "2023-09-27" @default.
- W3038932475 title "A Study of the Aeroacoustics of Swept Propellers for Small Unmanned Aerial Vehicles" @default.
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- W3038932475 doi "https://doi.org/10.2514/6.2021-1926" @default.
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