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- W3084764812 abstract "The Rotor noise is known to be highly annoying and intrusive. Therefore, rotor noise will be one of the major design parameters for next-generation quieter rotor-crafts or drones. This will only be possible with a better understanding of rotor aerodynamics and acoustics. The present study tries to use a simplistic rotor driven by an electric motor for the noise generation. A microphone is used to measure the acoustic signals and Fast Fourier Transform is used to find the dominant frequencies or the energy distribution. A differential manometer is used to measure the averaged velocity along the radial direction. The characterization of the flow field in terms of radial velocity variation and acoustic signal characterization provides preliminary information on the physics of aerodynamics and aero-acoustics of rotor systems. The results from the experiments suggest that the predefined imbalance imposed on the rotor increases the noise due to aerodynamics and also due to structural vibrations." @default.
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- W3084764812 date "2020-09-12" @default.
- W3084764812 modified "2023-09-23" @default.
- W3084764812 title "Preliminary aero-acoustic measurements of free rotating rotor with predefined imbalance" @default.
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- W3084764812 doi "https://doi.org/10.1088/1757-899x/912/2/022014" @default.
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