Influence of differential spoiler settings on the wake the vortex characterization and alleviation
Experimental investigations using particle image velocimetry technique have been carried out for the evaluation of the differential spoiler setting capabilities in modifying the spanwise wing load and further reduce the wake vortex hazard. The aircraft half model (at high lift configuration) was inv...
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American Institute of Aeronautical and Astronautic
2010
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my.iium.irep.20512012-02-22T10:18:34Z http://irep.iium.edu.my/2051/ Influence of differential spoiler settings on the wake the vortex characterization and alleviation Elsayed, Omer Ali Asrar, Waqar Omar, Ashraf Ali Kwon, Kijung TL500 Aeronautics Experimental investigations using particle image velocimetry technique have been carried out for the evaluation of the differential spoiler setting capabilities in modifying the spanwise wing load and further reduce the wake vortex hazard. The aircraft half model (at high lift configuration) was investigated for two differential spoiler settings. Results reveal a noticeable inboard shift of spanwise wing loading. Implementation of a differential spoiler setting results in a substantial redistribution of the flap tip vortex circulation with an increase in the diameter of the merged vortex by a factor of up to 2.72 relative to the undisturbed flap tip vortex. Inspection of the cross-stream distribution of axial vorticity shows a reduction by a factor of up to 2.33 in the peak vorticity value. A 44% decrease of the maximum crossflow velocity relative to the undisturbed flap tip vortex crossflow velocity was recorded for the case of deployed spoilers. Finally assessment of the differential spoiler setting capabilities as a wake vortex attenuation device reveals that, while position of the maximum induced rolling moments in the flap tip area is little influenced by the differential spoiler setting, the maximum induced rolling moment coefficient was reduced to nearly one third of the undisturbed flap tip vortex value. American Institute of Aeronautical and Astronautic 2010 Article REM application/pdf en http://irep.iium.edu.my/2051/4/influence_of_differential_spoiler_settings.pdf Elsayed, Omer Ali and Asrar, Waqar and Omar, Ashraf Ali and Kwon, Kijung (2010) Influence of differential spoiler settings on the wake the vortex characterization and alleviation. Journal of Aircraft, 47 (5). pp. 1728-1738. ISSN 0021-8669 http://www.aiaa.org/content.cfm?pageid=322&lupubid=22 10.2514/1.C000258 |
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TL500 Aeronautics Elsayed, Omer Ali Asrar, Waqar Omar, Ashraf Ali Kwon, Kijung Influence of differential spoiler settings on the wake the vortex characterization and alleviation |
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Experimental investigations using particle image velocimetry technique have been carried out for the evaluation of the differential spoiler setting capabilities in modifying the spanwise wing load and further reduce the wake vortex hazard. The aircraft half model (at high lift configuration) was investigated for two differential spoiler settings. Results reveal a noticeable inboard shift of spanwise wing loading. Implementation of a differential spoiler setting results in a substantial redistribution of the flap tip vortex circulation with an increase in the diameter of the merged vortex by a factor of up to 2.72 relative to the undisturbed flap tip vortex. Inspection of the cross-stream distribution of axial vorticity shows a reduction by a factor of up to 2.33 in the peak vorticity value. A 44% decrease of the maximum crossflow velocity relative to the undisturbed flap tip vortex crossflow velocity was recorded for the case of deployed spoilers. Finally assessment of the differential spoiler setting capabilities as a wake vortex attenuation device reveals that, while position of the maximum induced rolling moments in the flap tip area is little influenced by the differential spoiler setting, the maximum induced rolling moment coefficient was reduced to nearly one third of the undisturbed flap tip vortex value. |
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Article |
author |
Elsayed, Omer Ali Asrar, Waqar Omar, Ashraf Ali Kwon, Kijung |
author_facet |
Elsayed, Omer Ali Asrar, Waqar Omar, Ashraf Ali Kwon, Kijung |
author_sort |
Elsayed, Omer Ali |
title |
Influence of differential spoiler settings on the wake the vortex characterization and alleviation |
title_short |
Influence of differential spoiler settings on the wake the vortex characterization and alleviation |
title_full |
Influence of differential spoiler settings on the wake the vortex characterization and alleviation |
title_fullStr |
Influence of differential spoiler settings on the wake the vortex characterization and alleviation |
title_full_unstemmed |
Influence of differential spoiler settings on the wake the vortex characterization and alleviation |
title_sort |
influence of differential spoiler settings on the wake the vortex characterization and alleviation |
publisher |
American Institute of Aeronautical and Astronautic |
publishDate |
2010 |
url |
http://irep.iium.edu.my/2051/4/influence_of_differential_spoiler_settings.pdf http://irep.iium.edu.my/2051/ http://www.aiaa.org/content.cfm?pageid=322&lupubid=22 |
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