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Advanced Kinematic Tailoring for Morphing Aircraft Actuation

Benjamin K. S. Woods, Michael Friswell, Norman M. Wereley

AIAA Journal, Volume: 52, Issue: 4, Pages: 788 - 798

Swansea University Author: Michael Friswell

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DOI (Published version): 10.2514/1.J052808

Abstract

Morphing aircraft concepts require powerful, compact, and lightweight actuators in order to realize the significant changes in the shape and aerodynamics desired. One source of inefficiency and lost performance common to all types of actuators is the mismatch between the force-versus-stroke profile...

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Published in: AIAA Journal
ISSN: 0001-1452 1533-385X
Published: 2014
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URI: https://cronfa.swan.ac.uk/Record/cronfa20432
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first_indexed 2015-03-17T03:03:39Z
last_indexed 2021-01-07T03:34:27Z
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spelling 2021-01-06T12:18:38.8292730 v2 20432 2015-03-13 Advanced Kinematic Tailoring for Morphing Aircraft Actuation 5894777b8f9c6e64bde3568d68078d40 Michael Friswell Michael Friswell true false 2015-03-13 FGSEN Morphing aircraft concepts require powerful, compact, and lightweight actuators in order to realize the significant changes in the shape and aerodynamics desired. One source of inefficiency and lost performance common to all types of actuators is the mismatch between the force-versus-stroke profile available from the actuator and that required by the load. This work investigates a novel spiral spooling pulley mechanism that allows for kinematic tailoring of the actuator force profile to better match the force required to drive a given load. To show the impact of kinematic tailoring on actuator efficiency, a representative case study is made of a pneumatic artificial muscle-driven morphing camber airfoil employing the fish bone active camber concept. By using an advanced spiral pulley kinematic mechanism, the actuator force profile is successfully tailored to match the morphing actuation torque required, with an additional torque margin added to account for any unmodeled effects. Genetic algorithm optimization is used to select the geometric parameters of the spiral pulley that maximize the energy efficiency of the actuator while ensuring it is able to produce the required torque levels. The performance of the optimized spiral pulley is compared to a baseline case employing an optimized circular pulley, which does not alter the shape of the actuator force profile, to show the performance improvement provided by the kinematic tailoring. Journal Article AIAA Journal 52 4 788 798 0001-1452 1533-385X 30 4 2014 2014-04-30 10.2514/1.J052808 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2021-01-06T12:18:38.8292730 2015-03-13T17:20:03.6062119 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Benjamin K. S. Woods 1 Michael Friswell 2 Norman M. Wereley 3
title Advanced Kinematic Tailoring for Morphing Aircraft Actuation
spellingShingle Advanced Kinematic Tailoring for Morphing Aircraft Actuation
Michael Friswell
title_short Advanced Kinematic Tailoring for Morphing Aircraft Actuation
title_full Advanced Kinematic Tailoring for Morphing Aircraft Actuation
title_fullStr Advanced Kinematic Tailoring for Morphing Aircraft Actuation
title_full_unstemmed Advanced Kinematic Tailoring for Morphing Aircraft Actuation
title_sort Advanced Kinematic Tailoring for Morphing Aircraft Actuation
author_id_str_mv 5894777b8f9c6e64bde3568d68078d40
author_id_fullname_str_mv 5894777b8f9c6e64bde3568d68078d40_***_Michael Friswell
author Michael Friswell
author2 Benjamin K. S. Woods
Michael Friswell
Norman M. Wereley
format Journal article
container_title AIAA Journal
container_volume 52
container_issue 4
container_start_page 788
publishDate 2014
institution Swansea University
issn 0001-1452
1533-385X
doi_str_mv 10.2514/1.J052808
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 Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 0
active_str 0
description Morphing aircraft concepts require powerful, compact, and lightweight actuators in order to realize the significant changes in the shape and aerodynamics desired. One source of inefficiency and lost performance common to all types of actuators is the mismatch between the force-versus-stroke profile available from the actuator and that required by the load. This work investigates a novel spiral spooling pulley mechanism that allows for kinematic tailoring of the actuator force profile to better match the force required to drive a given load. To show the impact of kinematic tailoring on actuator efficiency, a representative case study is made of a pneumatic artificial muscle-driven morphing camber airfoil employing the fish bone active camber concept. By using an advanced spiral pulley kinematic mechanism, the actuator force profile is successfully tailored to match the morphing actuation torque required, with an additional torque margin added to account for any unmodeled effects. Genetic algorithm optimization is used to select the geometric parameters of the spiral pulley that maximize the energy efficiency of the actuator while ensuring it is able to produce the required torque levels. The performance of the optimized spiral pulley is compared to a baseline case employing an optimized circular pulley, which does not alter the shape of the actuator force profile, to show the performance improvement provided by the kinematic tailoring.
published_date 2014-04-30T03:24:09Z
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score 11.012678

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