Aerodynamic Analyses on the Steady and Unsteady Loading-Noise Sources of Drone Propellers
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DOI: 10.1007/s42405-019-00176-3
Abstract: This study investigated the small drone propeller noise, particularly the discrete blade passing frequency (BPF) tone and its harmonics at low frequencies less than 1000 Hz. The unsteady Reynolds-averaged Navier–Stokes equations were solved to investigate… read more here.
Keywords: unsteady loading; steady unsteady; harmonics; loading noise ... See more keywords
Investigation of the Interaction Tones Produced by Contra-Rotating Unmanned Aerial Vehicle Rotor Systems
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DOI: 10.2514/1.j062531
Abstract: This paper investigates the interaction tones produced by the periodic unsteady loading on the blades of two different contra-rotating unmanned aerial vehicle (UAV) rotor systems using computational, analytical, and experimental methods. Computational fluid dynamics (CFD)… read more here.
Keywords: interaction; tones produced; unsteady loading; rotor ... See more keywords