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Effect of diamond shaped strut with cylindrical pitch rod in subsonic wind tunnel testing

Wind Tunnel measurements are conducted using scaled down models of aerospace as well as automotive systems. These models are attached to supporting struts. The forces on the support system are taken into account to obtain the corrected aerodynamic data. Most of the struts used in testing are cylindr...

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Main Authors: UlHaque, Anwar, Asrar, Waqar, Omar, Ashraf Ali, Sulaeman, Erwin
Format: Article
Language:English
English
Published: Elsevier 2017
Subjects:
TL500 Aeronautics
Online Access:http://irep.iium.edu.my/53619/1/Effect%20of%20diamond%20shaped%20strut%20with%20cylindrical%20pitch%20rod%20in%20subsonic%20wind%20T%20testing.pdf
http://irep.iium.edu.my/53619/7/53619-Effect%20of%20diamond%20shaped%20strut%20with%20cylindrical%20pitch%20rod%20in%20subsonic%20wind%20tunnel%20testing_SCOPUS.pdf
http://irep.iium.edu.my/53619/
http://www.sciencedirect.com/science/article/pii/S0263224116307163
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spelling my.iium.irep.536192018-04-19T08:03:17Z http://irep.iium.edu.my/53619/ Effect of diamond shaped strut with cylindrical pitch rod in subsonic wind tunnel testing UlHaque, Anwar Asrar, Waqar Omar, Ashraf Ali Sulaeman, Erwin TL500 Aeronautics Wind Tunnel measurements are conducted using scaled down models of aerospace as well as automotive systems. These models are attached to supporting struts. The forces on the support system are taken into account to obtain the corrected aerodynamic data. Most of the struts used in testing are cylindrical in shape with a pitch rod for the alpha mechanism. These model attachments introduce additional forces and moments due to their size and frontal area. A diamond shaped strut is one of the proposed solutions with other benefits of reduced contribution towards the lift due to its tapered profile. This paper describes the effect of support interference due to the two different strut types. First, the entire cylindrical strut was shrouded by a streamlined metal fairing and its influence on the actual force and moments were measured through a series of blow downs in the IIUM low speed wind tunnel at different velocities and side slip angles. Later, the tests were conducted for the diamond shaped strut with a pitch rod mounted on the turntable at a certain distance from the central diamond shaped strut. Lastly the cylindrical strut was installed without the fairing. In comparison with the cylindrical strut (with or without fairing), the diamond shaped strut was found to have smaller lift. The developed databank for different struts will be beneficial for the future design of experiments in wind tunnels of similar dimensions. Such support systems not only contribute towards drag but also to the lift as well as side force. Elsevier 2017-03 Article REM application/pdf en http://irep.iium.edu.my/53619/1/Effect%20of%20diamond%20shaped%20strut%20with%20cylindrical%20pitch%20rod%20in%20subsonic%20wind%20T%20testing.pdf application/pdf en http://irep.iium.edu.my/53619/7/53619-Effect%20of%20diamond%20shaped%20strut%20with%20cylindrical%20pitch%20rod%20in%20subsonic%20wind%20tunnel%20testing_SCOPUS.pdf UlHaque, Anwar and Asrar, Waqar and Omar, Ashraf Ali and Sulaeman, Erwin (2017) Effect of diamond shaped strut with cylindrical pitch rod in subsonic wind tunnel testing. Measurement: Journal of the International Measurement Confederation, 99. pp. 1-6. ISSN 0263-2241 http://www.sciencedirect.com/science/article/pii/S0263224116307163 10.1016/j.measurement.2016.12.016
institution Universiti Islam Antarabangsa Malaysia
building IIUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider International Islamic University Malaysia
content_source IIUM Repository (IREP)
url_provider http://irep.iium.edu.my/
language English
English
topic TL500 Aeronautics
spellingShingle TL500 Aeronautics
UlHaque, Anwar
Asrar, Waqar
Omar, Ashraf Ali
Sulaeman, Erwin
Effect of diamond shaped strut with cylindrical pitch rod in subsonic wind tunnel testing
description Wind Tunnel measurements are conducted using scaled down models of aerospace as well as automotive systems. These models are attached to supporting struts. The forces on the support system are taken into account to obtain the corrected aerodynamic data. Most of the struts used in testing are cylindrical in shape with a pitch rod for the alpha mechanism. These model attachments introduce additional forces and moments due to their size and frontal area. A diamond shaped strut is one of the proposed solutions with other benefits of reduced contribution towards the lift due to its tapered profile. This paper describes the effect of support interference due to the two different strut types. First, the entire cylindrical strut was shrouded by a streamlined metal fairing and its influence on the actual force and moments were measured through a series of blow downs in the IIUM low speed wind tunnel at different velocities and side slip angles. Later, the tests were conducted for the diamond shaped strut with a pitch rod mounted on the turntable at a certain distance from the central diamond shaped strut. Lastly the cylindrical strut was installed without the fairing. In comparison with the cylindrical strut (with or without fairing), the diamond shaped strut was found to have smaller lift. The developed databank for different struts will be beneficial for the future design of experiments in wind tunnels of similar dimensions. Such support systems not only contribute towards drag but also to the lift as well as side force.
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 Effect of diamond shaped strut with cylindrical pitch rod in subsonic wind tunnel testing
title_short Effect of diamond shaped strut with cylindrical pitch rod in subsonic wind tunnel testing
title_full Effect of diamond shaped strut with cylindrical pitch rod in subsonic wind tunnel testing
title_fullStr Effect of diamond shaped strut with cylindrical pitch rod in subsonic wind tunnel testing
title_full_unstemmed Effect of diamond shaped strut with cylindrical pitch rod in subsonic wind tunnel testing
title_sort effect of diamond shaped strut with cylindrical pitch rod in subsonic wind tunnel testing
publisher Elsevier
publishDate 2017
url http://irep.iium.edu.my/53619/1/Effect%20of%20diamond%20shaped%20strut%20with%20cylindrical%20pitch%20rod%20in%20subsonic%20wind%20T%20testing.pdf
http://irep.iium.edu.my/53619/7/53619-Effect%20of%20diamond%20shaped%20strut%20with%20cylindrical%20pitch%20rod%20in%20subsonic%20wind%20tunnel%20testing_SCOPUS.pdf
http://irep.iium.edu.my/53619/
http://www.sciencedirect.com/science/article/pii/S0263224116307163
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score 13.211869

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