Heading control strategy assessment for coaxial compound helicopters

Yuan, Ye; THOMSON, Douglas; CHEN, Renliang; DUNLOP, Richard

doi:10.1016/j.cja.2019.04.008

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Heading control strategy assessment for coaxial compound helicopters

Ye Yuan

, Douglas THOMSON, Renliang CHEN, Richard DUNLOP

Chinese Journal of Aeronautics, Volume: 32, Issue: 9, Pages: 2037 - 2046

Swansea University Author: Ye Yuan

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DOI (Published version): 10.1016/j.cja.2019.04.008

Abstract

The coaxial compound helicopter has two possible strategies for heading control: collective differential and rudder deflection. A flight dynamics model is developed to assess the effect of different heading control strategies. This includes the trim characteristics, steady flight performance, contro...

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Published in:	Chinese Journal of Aeronautics
ISSN:	1000-9361
Published:	Elsevier BV 2019
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa58280
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spelling	2021-10-29T14:55:36.8590696 v2 58280 2021-10-08 Heading control strategy assessment for coaxial compound helicopters cdadbd9e334ad914d7968a538d9522a4 0000-0002-7568-0130 Ye Yuan Ye Yuan true false 2021-10-08 GENG The coaxial compound helicopter has two possible strategies for heading control: collective differential and rudder deflection. A flight dynamics model is developed to assess the effect of different heading control strategies. This includes the trim characteristics, steady flight performance, controllability, and manoeuvrability. The trim study demonstrates that heading control strategies are less influential on trim results, and the steady flight performance is also not significantly affected by the heading control strategy adopted. The controllability analysis shows although heading bandwidth and phase delay results at various speeds with different heading control strategies are all satisfied, the control derivative of the collective differential decreases as speed increases, and its heading aggressive agility is degraded into Level 3 in high-speed flight. In addition, using collective differential would lead to severe heading-rolling coupling as forward speed increases. On the contrary, the control derivative and aggressive agility of the rudder deflection is improved with forward speed, and there is no evidence of heading-rolling coupling. Finally, the transient turn Mission-Task-Element (MTE) is utilized to investigate the heading manoeuvre characteristics in different heading control strategies, which indicates that the collective differential would add the amplitude of control input and the power consumption during this MTE. Journal Article Chinese Journal of Aeronautics 32 9 2037 2046 Elsevier BV 1000-9361 Coaxial compound helicopter; Control strategy; Handling qualities; Helicopter flight dynamics; Helicopter performance 1 9 2019 2019-09-01 10.1016/j.cja.2019.04.008 COLLEGE NANME General Engineering COLLEGE CODE GENG Swansea University This study is supported by the Priority Academic Program Development of Jiangsu Higher Education Institutions of China, the program of China Scholarships Council (No. 201706830016), and the National Natural Science Foundation of China (No. 11672128). 2021-10-29T14:55:36.8590696 2021-10-08T21:53:10.6674176 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - General Engineering Ye Yuan 0000-0002-7568-0130 1 Douglas THOMSON 2 Renliang CHEN 3 Richard DUNLOP 4 58280__21370__b275788477f24aa88901bfd3c900f3cc.pdf 58280.pdf 2021-10-29T14:54:24.7673044 Output 1637331 application/pdf Version of Record true This is an open access article under the CC BY-NC-ND license true eng http://creativecommons.org/licenses/by-nc-nd/4.0/
title	Heading control strategy assessment for coaxial compound helicopters
spellingShingle	Heading control strategy assessment for coaxial compound helicopters Ye Yuan
title_short	Heading control strategy assessment for coaxial compound helicopters
title_full	Heading control strategy assessment for coaxial compound helicopters
title_fullStr	Heading control strategy assessment for coaxial compound helicopters
title_full_unstemmed	Heading control strategy assessment for coaxial compound helicopters
title_sort	Heading control strategy assessment for coaxial compound helicopters
author_id_str_mv	cdadbd9e334ad914d7968a538d9522a4
author_id_fullname_str_mv	cdadbd9e334ad914d7968a538d9522a4_***_Ye Yuan
author	Ye Yuan
author2	Ye Yuan Douglas THOMSON Renliang CHEN Richard DUNLOP
format	Journal article
container_title	Chinese Journal of Aeronautics
container_volume	32
container_issue	9
container_start_page	2037
publishDate	2019
institution	Swansea University
issn	1000-9361
doi_str_mv	10.1016/j.cja.2019.04.008
publisher	Elsevier BV
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 - General Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - General Engineering
document_store_str	1
active_str	0
description	The coaxial compound helicopter has two possible strategies for heading control: collective differential and rudder deflection. A flight dynamics model is developed to assess the effect of different heading control strategies. This includes the trim characteristics, steady flight performance, controllability, and manoeuvrability. The trim study demonstrates that heading control strategies are less influential on trim results, and the steady flight performance is also not significantly affected by the heading control strategy adopted. The controllability analysis shows although heading bandwidth and phase delay results at various speeds with different heading control strategies are all satisfied, the control derivative of the collective differential decreases as speed increases, and its heading aggressive agility is degraded into Level 3 in high-speed flight. In addition, using collective differential would lead to severe heading-rolling coupling as forward speed increases. On the contrary, the control derivative and aggressive agility of the rudder deflection is improved with forward speed, and there is no evidence of heading-rolling coupling. Finally, the transient turn Mission-Task-Element (MTE) is utilized to investigate the heading manoeuvre characteristics in different heading control strategies, which indicates that the collective differential would add the amplitude of control input and the power consumption during this MTE.
published_date	2019-09-01T04:14:41Z
_version_	1763753990954156032
score	11.037056

Heading control strategy assessment for coaxial compound helicopters

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