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Comparison of Constrained Parameterisation Strategies for Aerodynamic Optimisation of Morphing Leading Edge Airfoil

Andrea Magrini, Ernesto Benini, Rita Ponza, Chen Wang, Hamed Khodaparast, Michael Friswell, Volker Landersheim, Dominik Laveuve, Conchin Contell Asins, Hamed Haddad Khodaparast Orcid Logo

Aerospace, Volume: 6, Issue: 3, Start page: 31

Swansea University Authors: Michael Friswell, Hamed Haddad Khodaparast Orcid Logo

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DOI (Published version): 10.3390/aerospace6030031

Abstract

In the context of ambitious targets for reducing environmental impact in the aviation sector, dictated by international institutions, morphing aircraft are expected to have potential for achieving the required efficiency increases. However, there are still open issues related to the design and imple...

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Published in: Aerospace
ISSN: 2226-4310
Published: 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa50449
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spelling 2019-07-18T15:32:38.5696744 v2 50449 2019-05-20 Comparison of Constrained Parameterisation Strategies for Aerodynamic Optimisation of Morphing Leading Edge Airfoil 5894777b8f9c6e64bde3568d68078d40 Michael Friswell Michael Friswell true false f207b17edda9c4c3ea074cbb7555efc1 0000-0002-3721-4980 Hamed Haddad Khodaparast Hamed Haddad Khodaparast true false 2019-05-20 FGSEN In the context of ambitious targets for reducing environmental impact in the aviation sector, dictated by international institutions, morphing aircraft are expected to have potential for achieving the required efficiency increases. However, there are still open issues related to the design and implementation of deformable structures. In this paper, we compare three constrained parameterisation strategies for the aerodynamic design of a morphing leading edge, representing a potential substitute for traditional high-lift systems. In order to facilitate the structural design and promote the feasibility of solutions, we solve a multi-objective optimisation problem, including constraints on axial and bending strain introduced by morphing. A parameterisation method, inherently producing constant arc length curves, is employed in three variants, representing different morphing strategies which provide an increasing level of deformability, by allowing the lower edge of the flexible skin to slide and the gap formed with the fixed spar to be closed by a hatch. The results for the optimisation of a baseline airfoil show that the geometric constraints are effectively handled in the optimisation and the solutions are smooth, with a continuous variation along the Pareto frontier. The larger shape modification allowed by more flexible parameterisation variants enables an increase of the maximum lift coefficient up to 8.35%, and efficiency at 70% of stall incidence up to 4.26%. Journal Article Aerospace 6 3 31 2226-4310 morphing leading edge; constrained parameterisation; aerodynamic optimisation 31 12 2019 2019-12-31 10.3390/aerospace6030031 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2019-07-18T15:32:38.5696744 2019-05-20T08:54:59.3598464 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Andrea Magrini 1 Ernesto Benini 2 Rita Ponza 3 Chen Wang 4 Hamed Khodaparast 5 Michael Friswell 6 Volker Landersheim 7 Dominik Laveuve 8 Conchin Contell Asins 9 Hamed Haddad Khodaparast 0000-0002-3721-4980 10 0050449-20052019085648.pdf magrini2019v4.pdf 2019-05-20T08:56:48.6270000 Output 5477840 application/pdf Version of Record true 2019-05-20T00:00:00.0000000 Distributed under the terms of a Creative Commons Attribution (CC-BY-4.0) true eng
title Comparison of Constrained Parameterisation Strategies for Aerodynamic Optimisation of Morphing Leading Edge Airfoil
spellingShingle Comparison of Constrained Parameterisation Strategies for Aerodynamic Optimisation of Morphing Leading Edge Airfoil
Michael Friswell
Hamed Haddad Khodaparast
title_short Comparison of Constrained Parameterisation Strategies for Aerodynamic Optimisation of Morphing Leading Edge Airfoil
title_full Comparison of Constrained Parameterisation Strategies for Aerodynamic Optimisation of Morphing Leading Edge Airfoil
title_fullStr Comparison of Constrained Parameterisation Strategies for Aerodynamic Optimisation of Morphing Leading Edge Airfoil
title_full_unstemmed Comparison of Constrained Parameterisation Strategies for Aerodynamic Optimisation of Morphing Leading Edge Airfoil
title_sort Comparison of Constrained Parameterisation Strategies for Aerodynamic Optimisation of Morphing Leading Edge Airfoil
author_id_str_mv 5894777b8f9c6e64bde3568d68078d40
f207b17edda9c4c3ea074cbb7555efc1
author_id_fullname_str_mv 5894777b8f9c6e64bde3568d68078d40_***_Michael Friswell
f207b17edda9c4c3ea074cbb7555efc1_***_Hamed Haddad Khodaparast
author Michael Friswell
Hamed Haddad Khodaparast
author2 Andrea Magrini
Ernesto Benini
Rita Ponza
Chen Wang
Hamed Khodaparast
Michael Friswell
Volker Landersheim
Dominik Laveuve
Conchin Contell Asins
Hamed Haddad Khodaparast
format Journal article
container_title Aerospace
container_volume 6
container_issue 3
container_start_page 31
publishDate 2019
institution Swansea University
issn 2226-4310
doi_str_mv 10.3390/aerospace6030031
college_str Faculty of Science and Engineering
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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 Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 1
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description In the context of ambitious targets for reducing environmental impact in the aviation sector, dictated by international institutions, morphing aircraft are expected to have potential for achieving the required efficiency increases. However, there are still open issues related to the design and implementation of deformable structures. In this paper, we compare three constrained parameterisation strategies for the aerodynamic design of a morphing leading edge, representing a potential substitute for traditional high-lift systems. In order to facilitate the structural design and promote the feasibility of solutions, we solve a multi-objective optimisation problem, including constraints on axial and bending strain introduced by morphing. A parameterisation method, inherently producing constant arc length curves, is employed in three variants, representing different morphing strategies which provide an increasing level of deformability, by allowing the lower edge of the flexible skin to slide and the gap formed with the fixed spar to be closed by a hatch. The results for the optimisation of a baseline airfoil show that the geometric constraints are effectively handled in the optimisation and the solutions are smooth, with a continuous variation along the Pareto frontier. The larger shape modification allowed by more flexible parameterisation variants enables an increase of the maximum lift coefficient up to 8.35%, and efficiency at 70% of stall incidence up to 4.26%.
published_date 2019-12-31T04:01:55Z
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