Wind tunnel testing on a generic model of a hybrid lifting hull

In this research, an experimental investigation was carried out at the International Islamic University Malaysia - Low Speed Wind Tunnel facility on a generic model of a hybrid lifting hull. Based on the historical trends of non-rigid airships, the fineness ratio of the said hull has been selecte...

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Main Authors:	UlHaque, Anwar, Asrar, Waqar, Omar, Ashraf Ali, Sulaeman, Erwin
Format:	Article
Language:	English English English
Published:	Instituto de Aeronáutica e Espaço 2016
Subjects:	TL500 Aeronautics
Online Access:	http://irep.iium.edu.my/52640/ http://irep.iium.edu.my/52640/ http://irep.iium.edu.my/52640/ http://irep.iium.edu.my/52640/1/wind%20tunnel%20testing%20of%20a%20lifting%20hull-%20JATM.pdf http://irep.iium.edu.my/52640/7/52640_Wind%20tunnel%20testing%20on%20a%20generic%20model%20of%20a%20hybrid%20lifting%20hull_Scopus.pdf http://irep.iium.edu.my/52640/13/52640_wind%20tunnel%20testing_WOS.pdf

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recordtype	eprints
spelling	iium-526402017-10-11T09:03:07Z http://irep.iium.edu.my/52640/ Wind tunnel testing on a generic model of a hybrid lifting hull UlHaque, Anwar Asrar, Waqar Omar, Ashraf Ali Sulaeman, Erwin TL500 Aeronautics In this research, an experimental investigation was carried out at the International Islamic University Malaysia - Low Speed Wind Tunnel facility on a generic model of a hybrid lifting hull. Based on the historical trends of non-rigid airships, the fineness ratio of the said hull has been selected equal to 4. Free stream velocity was kept at 20 m∙s–1 and, along with the estimation of aerodynamic parameters, longitudinal and lateral stability characteristics were determined over a range of angles of attack from −8° to +12° and angles of sideslip from −10° to +10°. Zero lift coefficient was obtained at −4.2°, and the corresponding value was found to be greater than that at zero angle of attack. The comparison of the experimental results with the existing analytical relationships of wing has revealed that such an airfoil shaped hull cannot be considered as a wing due to 37% less analytical value of lift coefficient than that obtained by CFD simulations of the said hull. Existing equation of form factor of hull for conventional airships was also revisited, and a correction factor equal to 1.16 in the fundamental drag equation of aircraft’s fuselage was also proposed for fineness ratio equal to 4. Trends of the experimental data and comparison of the same with the theoretical calculations and computational results posed some interesting findings. The longitudinal and directional stabilities of a hybrid lifting hull were found to be statically unstable Instituto de Aeronáutica e Espaço 2016-10 Article PeerReviewed application/pdf en http://irep.iium.edu.my/52640/1/wind%20tunnel%20testing%20of%20a%20lifting%20hull-%20JATM.pdf application/pdf en http://irep.iium.edu.my/52640/7/52640_Wind%20tunnel%20testing%20on%20a%20generic%20model%20of%20a%20hybrid%20lifting%20hull_Scopus.pdf application/pdf en http://irep.iium.edu.my/52640/13/52640_wind%20tunnel%20testing_WOS.pdf UlHaque, Anwar and Asrar, Waqar and Omar, Ashraf Ali and Sulaeman, Erwin (2016) Wind tunnel testing on a generic model of a hybrid lifting hull. Journal of Aerospace Technology and Management, 8 (4). pp. 467-474. ISSN 1984-9648 E-ISSN 2175-9146 http://www.jatm.com.br/ojs/index.php/jatm/article/view/645/558 10.5028/jatm.v8i4.645
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English English
topic	TL500 Aeronautics
spellingShingle	TL500 Aeronautics UlHaque, Anwar Asrar, Waqar Omar, Ashraf Ali Sulaeman, Erwin Wind tunnel testing on a generic model of a hybrid lifting hull
description	In this research, an experimental investigation was carried out at the International Islamic University Malaysia - Low Speed Wind Tunnel facility on a generic model of a hybrid lifting hull. Based on the historical trends of non-rigid airships, the fineness ratio of the said hull has been selected equal to 4. Free stream velocity was kept at 20 m∙s–1 and, along with the estimation of aerodynamic parameters, longitudinal and lateral stability characteristics were determined over a range of angles of attack from −8° to +12° and angles of sideslip from −10° to +10°. Zero lift coefficient was obtained at −4.2°, and the corresponding value was found to be greater than that at zero angle of attack. The comparison of the experimental results with the existing analytical relationships of wing has revealed that such an airfoil shaped hull cannot be considered as a wing due to 37% less analytical value of lift coefficient than that obtained by CFD simulations of the said hull. Existing equation of form factor of hull for conventional airships was also revisited, and a correction factor equal to 1.16 in the fundamental drag equation of aircraft’s fuselage was also proposed for fineness ratio equal to 4. Trends of the experimental data and comparison of the same with the theoretical calculations and computational results posed some interesting findings. The longitudinal and directional stabilities of a hybrid lifting hull were found to be statically unstable
format	Article
author	UlHaque, Anwar Asrar, Waqar Omar, Ashraf Ali Sulaeman, Erwin
author_facet	UlHaque, Anwar Asrar, Waqar Omar, Ashraf Ali Sulaeman, Erwin
author_sort	UlHaque, Anwar
title	Wind tunnel testing on a generic model of a hybrid lifting hull
title_short	Wind tunnel testing on a generic model of a hybrid lifting hull
title_full	Wind tunnel testing on a generic model of a hybrid lifting hull
title_fullStr	Wind tunnel testing on a generic model of a hybrid lifting hull
title_full_unstemmed	Wind tunnel testing on a generic model of a hybrid lifting hull
title_sort	wind tunnel testing on a generic model of a hybrid lifting hull
publisher	Instituto de Aeronáutica e Espaço
publishDate	2016
url	http://irep.iium.edu.my/52640/ http://irep.iium.edu.my/52640/ http://irep.iium.edu.my/52640/ http://irep.iium.edu.my/52640/1/wind%20tunnel%20testing%20of%20a%20lifting%20hull-%20JATM.pdf http://irep.iium.edu.my/52640/7/52640_Wind%20tunnel%20testing%20on%20a%20generic%20model%20of%20a%20hybrid%20lifting%20hull_Scopus.pdf http://irep.iium.edu.my/52640/13/52640_wind%20tunnel%20testing_WOS.pdf
first_indexed	2023-09-18T21:14:33Z
last_indexed	2023-09-18T21:14:33Z
_version_	1777411474814140416

Wind tunnel testing on a generic model of a hybrid lifting hull

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