Experimental Active Gust Load Alleviation via an Actuated Wingtip

Tehrani, Majid Ahmadi; ELLIS, JAMES; Farsadi, Turaç; Jiffri, Shakir; Khodaparast, Hamed Haddad; Friswell, Michael

doi:10.2514/6.2025-0715

Conference Paper/Proceeding/Abstract 187 views

Experimental Active Gust Load Alleviation via an Actuated Wingtip

Majid Ahmadi Tehrani, JAMES ELLIS, Turaç Farsadi, Shakir Jiffri

, Hamed Haddad Khodaparast

, Michael Friswell

AIAA SCITECH 2025 Forum

Swansea University Authors: JAMES ELLIS, Shakir Jiffri , Hamed Haddad Khodaparast , Michael Friswell

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DOI (Published version): 10.2514/6.2025-0715

Abstract

This paper investigates experimental methods for Gust Load Alleviation (GLA) on aircraft wings, focusing on reducing wing root bending moments through the application of Active Controlled Folding Wingtip (ACFWT) devices. Two approaches to implementing ACFWTs are explored. The first approach employs...

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Published in:	AIAA SCITECH 2025 Forum
ISBN:	978-1-62410-723-8
Published:	Reston, Virginia American Institute of Aeronautics and Astronautics 2025
URI:	https://cronfa.swan.ac.uk/Record/cronfa70416

first_indexed	2025-09-21T10:16:22Z
last_indexed	2025-10-31T18:11:53Z
id	cronfa70416
recordtype	SURis
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spelling	2025-10-30T10:32:46.3853460 v2 70416 2025-09-21 Experimental Active Gust Load Alleviation via an Actuated Wingtip 6a44c3b0bedf1d5f8c994b2252206772 JAMES ELLIS JAMES ELLIS true false 1d7a7d2a8f10ec98afed15a4b4b791c4 0000-0002-5570-5783 Shakir Jiffri Shakir Jiffri true false f207b17edda9c4c3ea074cbb7555efc1 0000-0002-3721-4980 Hamed Haddad Khodaparast Hamed Haddad Khodaparast true false 5894777b8f9c6e64bde3568d68078d40 Michael Friswell Michael Friswell true false 2025-09-21 This paper investigates experimental methods for Gust Load Alleviation (GLA) on aircraft wings, focusing on reducing wing root bending moments through the application of Active Controlled Folding Wingtip (ACFWT) devices. Two approaches to implementing ACFWTs are explored. The first approach employs a brushed DC motor to control wingtip rotation, with Proportional-Derivative (PD) control enhancing gust load reduction by influencing the stiffness and damping in the bending mode. Feedback is based on the wingtip's out-of-plane motion, which is indicative of root bending moments. The second approach utilises a more advanced aero-servo-elastic system integrated with a PID (Proportional-Integral-Derivative) controller. Here, wing root bending moments are directly used as the feedback variable, with the control strategy driving the error between desired and actual moments to zero. This approach demonstrates superior load mitigation, particularly at gust frequencies close to the wing's natural frequency. The results show that both methods effectively mitigate gust-induced loads and reduce wing root bending moments across varying gust frequencies and angles of attack. The dynamic response of the folding wingtip, including upward and downward deflections, redistributes aerodynamic loads while maintaining structural stability. This study highlights the potential of ACFWT systems to enhance aerodynamic performance and structural integrity under gust loading conditions. Conference Paper/Proceeding/Abstract AIAA SCITECH 2025 Forum American Institute of Aeronautics and Astronautics Reston, Virginia 978-1-62410-723-8 Gust Load Alleviation, Active Control, Active Wingtip 3 1 2025 2025-01-03 10.2514/6.2025-0715 COLLEGE NANME COLLEGE CODE Swansea University 2025-10-30T10:32:46.3853460 2025-09-21T11:08:54.2021789 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering Majid Ahmadi Tehrani 1 JAMES ELLIS 2 Turaç Farsadi 3 Shakir Jiffri 0000-0002-5570-5783 4 Hamed Haddad Khodaparast 0000-0002-3721-4980 5 Michael Friswell 6
title	Experimental Active Gust Load Alleviation via an Actuated Wingtip
spellingShingle	Experimental Active Gust Load Alleviation via an Actuated Wingtip JAMES ELLIS Shakir Jiffri Hamed Haddad Khodaparast Michael Friswell
title_short	Experimental Active Gust Load Alleviation via an Actuated Wingtip
title_full	Experimental Active Gust Load Alleviation via an Actuated Wingtip
title_fullStr	Experimental Active Gust Load Alleviation via an Actuated Wingtip
title_full_unstemmed	Experimental Active Gust Load Alleviation via an Actuated Wingtip
title_sort	Experimental Active Gust Load Alleviation via an Actuated Wingtip
author_id_str_mv	6a44c3b0bedf1d5f8c994b2252206772 1d7a7d2a8f10ec98afed15a4b4b791c4 f207b17edda9c4c3ea074cbb7555efc1 5894777b8f9c6e64bde3568d68078d40
author_id_fullname_str_mv	6a44c3b0bedf1d5f8c994b2252206772_*_JAMES ELLIS 1d7a7d2a8f10ec98afed15a4b4b791c4__Shakir Jiffri f207b17edda9c4c3ea074cbb7555efc1__Hamed Haddad Khodaparast 5894777b8f9c6e64bde3568d68078d40_*_Michael Friswell
author	JAMES ELLIS Shakir Jiffri Hamed Haddad Khodaparast Michael Friswell
author2	Majid Ahmadi Tehrani JAMES ELLIS Turaç Farsadi Shakir Jiffri Hamed Haddad Khodaparast Michael Friswell
format	Conference Paper/Proceeding/Abstract
container_title	AIAA SCITECH 2025 Forum
publishDate	2025
institution	Swansea University
isbn	978-1-62410-723-8
doi_str_mv	10.2514/6.2025-0715
publisher	American Institute of Aeronautics and Astronautics
college_str	Faculty of Science and Engineering
hierarchytype
hierarchy_top_id	facultyofscienceandengineering
hierarchy_top_title	Faculty of Science and Engineering
hierarchy_parent_id	facultyofscienceandengineering
hierarchy_parent_title	Faculty of Science and Engineering
department_str	School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering
document_store_str	0
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description	This paper investigates experimental methods for Gust Load Alleviation (GLA) on aircraft wings, focusing on reducing wing root bending moments through the application of Active Controlled Folding Wingtip (ACFWT) devices. Two approaches to implementing ACFWTs are explored. The first approach employs a brushed DC motor to control wingtip rotation, with Proportional-Derivative (PD) control enhancing gust load reduction by influencing the stiffness and damping in the bending mode. Feedback is based on the wingtip's out-of-plane motion, which is indicative of root bending moments. The second approach utilises a more advanced aero-servo-elastic system integrated with a PID (Proportional-Integral-Derivative) controller. Here, wing root bending moments are directly used as the feedback variable, with the control strategy driving the error between desired and actual moments to zero. This approach demonstrates superior load mitigation, particularly at gust frequencies close to the wing's natural frequency. The results show that both methods effectively mitigate gust-induced loads and reduce wing root bending moments across varying gust frequencies and angles of attack. The dynamic response of the folding wingtip, including upward and downward deflections, redistributes aerodynamic loads while maintaining structural stability. This study highlights the potential of ACFWT systems to enhance aerodynamic performance and structural integrity under gust loading conditions.
published_date	2025-01-03T05:30:49Z
_version_	1851098031508684800
score	11.089386

Experimental Active Gust Load Alleviation via an Actuated Wingtip

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