Aeroelastic flutter analysis of supersonic wing with multiple external stores

Flutter may be considered to be one of the most dangerous aeroelastic failure phenomenon. The flutter characteristic differs for each aircraft type, and depends on the wing geometry as well as its operational region of subsonic, transonic or supersonic speeds. Prior to performing a flight flutter...

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Main Authors:	Abdullah, Nur Azam, Sulaeman, Erwin
Format:	Article
Language:	English
Published:	IIUM Press 2014
Subjects:	TL500 Aeronautics
Online Access:	http://irep.iium.edu.my/41701/ http://irep.iium.edu.my/41701/ http://irep.iium.edu.my/41701/1/524-2142-3-PB.pdf

id	iium-41701
recordtype	eprints
spelling	iium-417012019-10-31T08:43:02Z http://irep.iium.edu.my/41701/ Aeroelastic flutter analysis of supersonic wing with multiple external stores Abdullah, Nur Azam Sulaeman, Erwin TL500 Aeronautics Flutter may be considered to be one of the most dangerous aeroelastic failure phenomenon. The flutter characteristic differs for each aircraft type, and depends on the wing geometry as well as its operational region of subsonic, transonic or supersonic speeds. Prior to performing a flight flutter test, extensive numerical simulations and Ground Vibration Tests should be conducted where the structural finite element modes and the experimentation results should be matched, otherwise the numerical simulation model must be rejected. In this paper, the analysis of simulation of a supersonic wing equipped with external missiles loaded on the wing is presented. The structural mode shapes at each generated frequency are also presented. The analysis is carried out using MSC Nastran FEM software. The wing flutter with the external stores was simulated at different altitudes. The result shows that the flutter velocity is sensitive to the flight altitude. For this reason, the flutter analysis is conducted also for a negative altitude. The negative altitude is obtained by considering the constant equivalent speed- Mach number rule at the flutter speed boundary which is a requirement in standard transport aircraft regulations IIUM Press 2014 Article PeerReviewed application/pdf en http://irep.iium.edu.my/41701/1/524-2142-3-PB.pdf Abdullah, Nur Azam and Sulaeman, Erwin (2014) Aeroelastic flutter analysis of supersonic wing with multiple external stores. IIUM Engineering Journal, 15 (2). pp. 1-11. ISSN 1511-788X http://journals.iium.edu.my/ejournal/index.php/iiumej/index
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	TL500 Aeronautics
spellingShingle	TL500 Aeronautics Abdullah, Nur Azam Sulaeman, Erwin Aeroelastic flutter analysis of supersonic wing with multiple external stores
description	Flutter may be considered to be one of the most dangerous aeroelastic failure phenomenon. The flutter characteristic differs for each aircraft type, and depends on the wing geometry as well as its operational region of subsonic, transonic or supersonic speeds. Prior to performing a flight flutter test, extensive numerical simulations and Ground Vibration Tests should be conducted where the structural finite element modes and the experimentation results should be matched, otherwise the numerical simulation model must be rejected. In this paper, the analysis of simulation of a supersonic wing equipped with external missiles loaded on the wing is presented. The structural mode shapes at each generated frequency are also presented. The analysis is carried out using MSC Nastran FEM software. The wing flutter with the external stores was simulated at different altitudes. The result shows that the flutter velocity is sensitive to the flight altitude. For this reason, the flutter analysis is conducted also for a negative altitude. The negative altitude is obtained by considering the constant equivalent speed- Mach number rule at the flutter speed boundary which is a requirement in standard transport aircraft regulations
format	Article
author	Abdullah, Nur Azam Sulaeman, Erwin
author_facet	Abdullah, Nur Azam Sulaeman, Erwin
author_sort	Abdullah, Nur Azam
title	Aeroelastic flutter analysis of supersonic wing with multiple external stores
title_short	Aeroelastic flutter analysis of supersonic wing with multiple external stores
title_full	Aeroelastic flutter analysis of supersonic wing with multiple external stores
title_fullStr	Aeroelastic flutter analysis of supersonic wing with multiple external stores
title_full_unstemmed	Aeroelastic flutter analysis of supersonic wing with multiple external stores
title_sort	aeroelastic flutter analysis of supersonic wing with multiple external stores
publisher	IIUM Press
publishDate	2014
url	http://irep.iium.edu.my/41701/ http://irep.iium.edu.my/41701/ http://irep.iium.edu.my/41701/1/524-2142-3-PB.pdf
first_indexed	2023-09-18T20:59:38Z
last_indexed	2023-09-18T20:59:38Z
_version_	1777410536968814592

Aeroelastic flutter analysis of supersonic wing with multiple external stores

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