TY - GEN
T1 - Broadband noise from serrated UAS propellers
T2 - 28th International Conference on Noise and Vibration Engineering, ISMA 2018 and 7th International Conference on Uncertainty in Structural Dynamics, USD 2018
AU - Marinus, B. G.
AU - Bontea, D.
AU - Halimi, A.
AU - Pire, A.
N1 - Publisher Copyright:
© Proceedings of ISMA 2018 - International Conference on Noise and Vibration Engineering and USD 2018 - International Conference on Uncertainty in Structural Dynamics. All rights reserved.
PY - 2018
Y1 - 2018
N2 - With the increased use on Unmanned Aerial Systems equipped with propellers and rotors, serrated edges are considered to reduce broadband noise emissions without affecting the aerodynamic performance. In this context, a full sensitivity study is performed to assess the independence of the solution to the space (voxel resolution) and time discretization (time step, sampling rate and number of revolutions). This way, the computational tools are validated for the prediction of both the aerodynamic and aeroacoustic performance. The results show there is enough confidence in such models for them to be used to optimize serrated propeller geometries and achieve a reduction of the noise emissions by 3~10dB in the 1000Hz to 10.000Hz range.
AB - With the increased use on Unmanned Aerial Systems equipped with propellers and rotors, serrated edges are considered to reduce broadband noise emissions without affecting the aerodynamic performance. In this context, a full sensitivity study is performed to assess the independence of the solution to the space (voxel resolution) and time discretization (time step, sampling rate and number of revolutions). This way, the computational tools are validated for the prediction of both the aerodynamic and aeroacoustic performance. The results show there is enough confidence in such models for them to be used to optimize serrated propeller geometries and achieve a reduction of the noise emissions by 3~10dB in the 1000Hz to 10.000Hz range.
UR - http://www.scopus.com/inward/record.url?scp=85060397703&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85060397703
T3 - Proceedings of ISMA 2018 - International Conference on Noise and Vibration Engineering and USD 2018 - International Conference on Uncertainty in Structural Dynamics
SP - 613
EP - 620
BT - Proceedings of ISMA 2018 - International Conference on Noise and Vibration Engineering and USD 2018 - International Conference on Uncertainty in Structural Dynamics
A2 - Moens, D.
A2 - Desmet, W.
A2 - Pluymers, B.
A2 - Rottiers, W.
PB - KU Leuven - Departement Werktuigkunde
Y2 - 17 September 2018 through 19 September 2018
ER -