Effect of leading-edge protuberances on swept wing aircraft performance
Stall is a complex phenomenon in aircraft that must be suppressed during flight. As a novel passive control method, bionic leading-edge protuberances (LEPs) have attracted widespread interest, particularly for delaying stall. Bionic protuberances at the leading edge of airfoils have been designed to...
Published in: | International Journal of Fluid Engineering |
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Online Access: | http://dx.doi.org/10.1063/5.0203063 https://pubs.aip.org/hgmri/ijfe/article-pdf/doi/10.1063/5.0203063/20007384/033101_1_5.0203063.pdf |
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craippubl:10.1063/5.0203063 2024-09-15T18:11:13+00:00 Effect of leading-edge protuberances on swept wing aircraft performance Wei, Xuntong Li, Deyou Li, Siqi Chang, Hong Fu, Xiaolong Zuo, Zhigang Wang, Hongjie Natural Science Foundation of Heilongjiang Province 2024 http://dx.doi.org/10.1063/5.0203063 https://pubs.aip.org/hgmri/ijfe/article-pdf/doi/10.1063/5.0203063/20007384/033101_1_5.0203063.pdf en eng AIP Publishing International Journal of Fluid Engineering volume 1, issue 3 ISSN 2994-9009 2994-9017 journal-article 2024 craippubl https://doi.org/10.1063/5.0203063 2024-06-27T04:04:40Z Stall is a complex phenomenon in aircraft that must be suppressed during flight. As a novel passive control method, bionic leading-edge protuberances (LEPs) have attracted widespread interest, particularly for delaying stall. Bionic protuberances at the leading edge of airfoils have been designed to control stall and increase the stability of unmanned aerial vehicles during operation, and it is the flow control mechanism associated with this application that is investigated in this study. First, numerical simulations are conducted to obtain the aerodynamic characteristics of original and bionic airfoils based on the S1223 large-lift airfoil. Next, the impact of the LEP amplitude is investigated. Finally, a vortex definition parameter, the Liutex vector, is utilized to analyze the influence of LEPs on vortices. The results show that bionic LEPs inspired by those on humpback whale flippers can improve the aerodynamic performance of airfoils under the extreme conditions that exist after stall, resulting in an ∼22% increase in the lift–drag ratio. LEPs are found to segment the flow field near the wing surface. The flow becomes bounded between adjacent protuberance structures, significantly inhibiting the development of flow separation and providing a drag reduction effect. This study thus provides a new approach for improving aircraft performance. Article in Journal/Newspaper Humpback Whale AIP Publishing International Journal of Fluid Engineering 1 3 |
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Open Polar |
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AIP Publishing |
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craippubl |
language |
English |
description |
Stall is a complex phenomenon in aircraft that must be suppressed during flight. As a novel passive control method, bionic leading-edge protuberances (LEPs) have attracted widespread interest, particularly for delaying stall. Bionic protuberances at the leading edge of airfoils have been designed to control stall and increase the stability of unmanned aerial vehicles during operation, and it is the flow control mechanism associated with this application that is investigated in this study. First, numerical simulations are conducted to obtain the aerodynamic characteristics of original and bionic airfoils based on the S1223 large-lift airfoil. Next, the impact of the LEP amplitude is investigated. Finally, a vortex definition parameter, the Liutex vector, is utilized to analyze the influence of LEPs on vortices. The results show that bionic LEPs inspired by those on humpback whale flippers can improve the aerodynamic performance of airfoils under the extreme conditions that exist after stall, resulting in an ∼22% increase in the lift–drag ratio. LEPs are found to segment the flow field near the wing surface. The flow becomes bounded between adjacent protuberance structures, significantly inhibiting the development of flow separation and providing a drag reduction effect. This study thus provides a new approach for improving aircraft performance. |
author2 |
Natural Science Foundation of Heilongjiang Province |
format |
Article in Journal/Newspaper |
author |
Wei, Xuntong Li, Deyou Li, Siqi Chang, Hong Fu, Xiaolong Zuo, Zhigang Wang, Hongjie |
spellingShingle |
Wei, Xuntong Li, Deyou Li, Siqi Chang, Hong Fu, Xiaolong Zuo, Zhigang Wang, Hongjie Effect of leading-edge protuberances on swept wing aircraft performance |
author_facet |
Wei, Xuntong Li, Deyou Li, Siqi Chang, Hong Fu, Xiaolong Zuo, Zhigang Wang, Hongjie |
author_sort |
Wei, Xuntong |
title |
Effect of leading-edge protuberances on swept wing aircraft performance |
title_short |
Effect of leading-edge protuberances on swept wing aircraft performance |
title_full |
Effect of leading-edge protuberances on swept wing aircraft performance |
title_fullStr |
Effect of leading-edge protuberances on swept wing aircraft performance |
title_full_unstemmed |
Effect of leading-edge protuberances on swept wing aircraft performance |
title_sort |
effect of leading-edge protuberances on swept wing aircraft performance |
publisher |
AIP Publishing |
publishDate |
2024 |
url |
http://dx.doi.org/10.1063/5.0203063 https://pubs.aip.org/hgmri/ijfe/article-pdf/doi/10.1063/5.0203063/20007384/033101_1_5.0203063.pdf |
genre |
Humpback Whale |
genre_facet |
Humpback Whale |
op_source |
International Journal of Fluid Engineering volume 1, issue 3 ISSN 2994-9009 2994-9017 |
op_doi |
https://doi.org/10.1063/5.0203063 |
container_title |
International Journal of Fluid Engineering |
container_volume |
1 |
container_issue |
3 |
_version_ |
1810448815570812928 |