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:
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
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