Dataset corresponding to the publication : Analysis of MAV Rotors Optimized for Low Noise and Aerodynamic Efficiency with Operational Constraints, Li Volsi et al., FLUIDS, 2024.

Rotors Optimized for Low Noise and Aerodynamic Efficiency database as presented in Li-Volsi, Brogna, Gojon, Jardin, Parisot-Dupuis & Moschetta. Analysis of MAV Rotors Optimized for Low Noise andAerodynamic Efficiency with Operational Constraints. FLUIDS, 2024. Thrust and Power coefficients, as well as acoustic pressure signals and autopower signals are provided. CAD files of the three optimized rotors (Best acoustic, Best Aero and Compromise), as well as example Matlab codes to post-process results are also proposed. Two runs were performed, a first one in order to see the evolution of the thrust and torque as a function of RPM from 4000 RPM to 8000 RPM by steps of 500 RPM. And a second refined run was done in order to have an operating point corresponding to a thrust of exactly 2N. The latter runs are labelled "_HR" for the acoustic and aerodynamic results. Please note that the thrust coefficient is found to be about 5 to 10% higher for this second run, for all the tested rotors. This is most probably due to a thermal issue with the load cell. - For aerodynamic results , the thrust and power coefficients are given as a function of RPM. Typical temperature and fluid density values are 290K and 1.2kg/m3, respectively. - For acoustic results, the autopower (Pa2) is given as a function of the frequency (Hz). Autopowers are obtained from fluctuating pressure time signals (16s) by computing the fast Fourier transform (FFT) with a Hanning window applied on 100 segments, using a 50% overlap and a magnitude correction factor, which leads to a frequency resolution of 3.125 Hz. For each rotation speed, data for 13 microphones located 1.62m away from the rotor axis and at different angles (every 10 degrees) from the rotor plane are provided. Microphone 1 corresponds to +60 degrees (as compared with the rotor plane, where + indicates that it is located in the direction of the flow, in our case above the rotor which is blowing upward). Microphone 2 corresponds to +50 degrees ... Microphone 7 corresponds to 0 degrees (the rotor plane) … Microphone 13 corresponds to -60 degrees.