Estimation of stability derivatives in pitch for an oscillating wedge in hypersonic flow

A similitude has been obtained for an oscillating two-dimensional wedge in pitch with attached shock at high angle of incidence in hypersonic flow. A strip theory, in which flow at infinite span wise location is two dimensional and independent of each other is being used. Further this unites the sim...

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Main Authors:	Khan, Sher Afghan, Thakur, Mohammed Asadullah
Format:	Conference or Workshop Item
Language:	English English
Published:	IOP Publishing 2017
Subjects:	QD Chemistry TL Motor vehicles. Aeronautics. Astronautics
Online Access:	http://irep.iium.edu.my/56873/ http://irep.iium.edu.my/56873/ http://irep.iium.edu.my/56873/ http://irep.iium.edu.my/56873/7/56873.pdf http://irep.iium.edu.my/56873/8/56873-Estimation%20of%20Stability%20Derivatives%20in%20Pitch%20for%20an%20Oscillating%20Wedge%20in%20Hypersonic%20Flow_SCOPUS.pdf

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recordtype	eprints
spelling	iium-568732017-06-15T03:32:46Z http://irep.iium.edu.my/56873/ Estimation of stability derivatives in pitch for an oscillating wedge in hypersonic flow Khan, Sher Afghan Thakur, Mohammed Asadullah QD Chemistry TL Motor vehicles. Aeronautics. Astronautics A similitude has been obtained for an oscillating two-dimensional wedge in pitch with attached shock at high angle of incidence in hypersonic flow. A strip theory, in which flow at infinite span wise location is two dimensional and independent of each other is being used. Further this unites the similitude with piston theory to give one dimensional piston theory with large flow deflection. Closed form solution is obtained for stiffness and damping derivatives in pitch. The present theory is valid when the shock wave is attached with the nose of the wedge. With the increase in semi vertex angle of the wedge the stiffness and the damping derivatives are found to increase progressively, and with the increase in the Mach number both stiffness and damping derivatives are found to decrease then with increase in Mach number it becomes independent of Mach number. From the amalgamation of theory developed, we can evaluate the stiffness and damping derivatives for in pitch for a wide range of Mach numbers, for various pivot positions, and angle of attack. Significantly the same results are being validated with the analytical results of Liu and Hui [4] and Lighthill’s [3] theory for some cases. IOP Publishing 2017-04-03 Conference or Workshop Item PeerReviewed application/pdf en http://irep.iium.edu.my/56873/7/56873.pdf application/pdf en http://irep.iium.edu.my/56873/8/56873-Estimation%20of%20Stability%20Derivatives%20in%20Pitch%20for%20an%20Oscillating%20Wedge%20in%20Hypersonic%20Flow_SCOPUS.pdf Khan, Sher Afghan and Thakur, Mohammed Asadullah (2017) Estimation of stability derivatives in pitch for an oscillating wedge in hypersonic flow. In: 3rd International Conference on Mechanical, Automotive and Aerospace Engineering 2016 (ICMAAE’16), 25th-27th July 2016, Kuala Lumpur, Malaysia. http://iopscience.iop.org/article/10.1088/1757-899X/184/1/012003/pdf 10.1088/1757-899X/184/1/012003
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English
topic	QD Chemistry TL Motor vehicles. Aeronautics. Astronautics
spellingShingle	QD Chemistry TL Motor vehicles. Aeronautics. Astronautics Khan, Sher Afghan Thakur, Mohammed Asadullah Estimation of stability derivatives in pitch for an oscillating wedge in hypersonic flow
description	A similitude has been obtained for an oscillating two-dimensional wedge in pitch with attached shock at high angle of incidence in hypersonic flow. A strip theory, in which flow at infinite span wise location is two dimensional and independent of each other is being used. Further this unites the similitude with piston theory to give one dimensional piston theory with large flow deflection. Closed form solution is obtained for stiffness and damping derivatives in pitch. The present theory is valid when the shock wave is attached with the nose of the wedge. With the increase in semi vertex angle of the wedge the stiffness and the damping derivatives are found to increase progressively, and with the increase in the Mach number both stiffness and damping derivatives are found to decrease then with increase in Mach number it becomes independent of Mach number. From the amalgamation of theory developed, we can evaluate the stiffness and damping derivatives for in pitch for a wide range of Mach numbers, for various pivot positions, and angle of attack. Significantly the same results are being validated with the analytical results of Liu and Hui [4] and Lighthill’s [3] theory for some cases.
format	Conference or Workshop Item
author	Khan, Sher Afghan Thakur, Mohammed Asadullah
author_facet	Khan, Sher Afghan Thakur, Mohammed Asadullah
author_sort	Khan, Sher Afghan
title	Estimation of stability derivatives in pitch for an oscillating wedge in hypersonic flow
title_short	Estimation of stability derivatives in pitch for an oscillating wedge in hypersonic flow
title_full	Estimation of stability derivatives in pitch for an oscillating wedge in hypersonic flow
title_fullStr	Estimation of stability derivatives in pitch for an oscillating wedge in hypersonic flow
title_full_unstemmed	Estimation of stability derivatives in pitch for an oscillating wedge in hypersonic flow
title_sort	estimation of stability derivatives in pitch for an oscillating wedge in hypersonic flow
publisher	IOP Publishing
publishDate	2017
url	http://irep.iium.edu.my/56873/ http://irep.iium.edu.my/56873/ http://irep.iium.edu.my/56873/ http://irep.iium.edu.my/56873/7/56873.pdf http://irep.iium.edu.my/56873/8/56873-Estimation%20of%20Stability%20Derivatives%20in%20Pitch%20for%20an%20Oscillating%20Wedge%20in%20Hypersonic%20Flow_SCOPUS.pdf
first_indexed	2023-09-18T21:20:18Z
last_indexed	2023-09-18T21:20:18Z
_version_	1777411836766846976

Estimation of stability derivatives in pitch for an oscillating wedge in hypersonic flow

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