Di Marco, Alessandro and Burghignoli, Lorenzo and Centracchio, Francesco and Camussi, Roberto and Ahlefeldt, Thomas and Henning, Arne and Müller, Jürg (2016) Phased Array Aeroacoustic Measurements of an Unmanned Aerial Vehicle. Internoise 2016, 2016-08-21 - 2016-08-24, Hamburg, Deutschland.
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Official URL: http://www.internoise2016.org/
Abstract
This paper reports the results of the aeroacoustics study of an Unmanned Aerial Vehicle (UAV) experimentally investigated on a scaled prototype model. The measurement campaign were performed at the RUAG Large Subsonic Wind Tunnel in Emmen. The model was mounted on a ceiling strut in the 7by5 meters test section. The aeroacoustic noise generated by the UAV was evaluated analysing the pressure fluctuations acquired through a phased array of 144 microphones installed on a flatplate on the ground of the test section floor. Pressure fluctuations were acquired in different configurations. The main parameters varied during the tests were: the velocity of the airflow, the incidence angle of the UAV and the presence of the landing gears. Flaps were always deployed. The directivity source contribution to the overall noise at various emission angles is determined as well, for each configuration, moving the array along the flow direction. Data were processed and then analysed in the frequency domain and using a conventional beamforming algorithm to retrieve the sound source map over the areas of interest. Source maps were deconvolved with a CLEANSC routine and single source contributions determined through integration of autopowers. The resulting spectra were finally scaled to flight conditions.
Item URL in elib: | https://elib.dlr.de/105913/ | ||||||||||||||||||||||||||||||||
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Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||||||||||||||||||
Additional Information: | Paper Nr. 263; http://pub.dega-akustik.de/IN2016/data/articles/000263.pdf | ||||||||||||||||||||||||||||||||
Title: | Phased Array Aeroacoustic Measurements of an Unmanned Aerial Vehicle | ||||||||||||||||||||||||||||||||
Authors: |
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Date: | 2016 | ||||||||||||||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||||||||||||||
Open Access: | No | ||||||||||||||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||||||||||||||
In SCOPUS: | No | ||||||||||||||||||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||||||||||||||||||
Status: | Published | ||||||||||||||||||||||||||||||||
Keywords: | Aeroacoustics, Beamforming, UAV: 21.6 | ||||||||||||||||||||||||||||||||
Event Title: | Internoise 2016 | ||||||||||||||||||||||||||||||||
Event Location: | Hamburg, Deutschland | ||||||||||||||||||||||||||||||||
Event Type: | international Conference | ||||||||||||||||||||||||||||||||
Event Start Date: | 21 August 2016 | ||||||||||||||||||||||||||||||||
Event End Date: | 24 August 2016 | ||||||||||||||||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||||||||||||||
HGF - Program: | Aeronautics | ||||||||||||||||||||||||||||||||
HGF - Program Themes: | fixed-wing aircraft | ||||||||||||||||||||||||||||||||
DLR - Research area: | Aeronautics | ||||||||||||||||||||||||||||||||
DLR - Program: | L AR - Aircraft Research | ||||||||||||||||||||||||||||||||
DLR - Research theme (Project): | L - Simulation and Validation (old) | ||||||||||||||||||||||||||||||||
Location: | Göttingen | ||||||||||||||||||||||||||||||||
Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > Experimental Methods | ||||||||||||||||||||||||||||||||
Deposited By: | Bachmann, Barbara | ||||||||||||||||||||||||||||||||
Deposited On: | 16 Dec 2016 12:27 | ||||||||||||||||||||||||||||||||
Last Modified: | 09 Jul 2024 14:56 |
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