Effect of mach number on stiffness and damping derivatives for oscillating hyersonic non-planar wedge
similitude has been obtained for a pitching oscillating Non planar wedge with attached bow shock at high angle of attack in hypersonic flow. A strip theory in which flow at a span wise location is two dimensional and independent of each other is being used. This combines with the similitude to lead...
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International Organization of Scientific Research (IOSR) Journals
2014
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| Online Access: | http://irep.iium.edu.my/49934/ http://irep.iium.edu.my/49934/ http://irep.iium.edu.my/49934/ http://irep.iium.edu.my/49934/1/B011280411-paper4.pdf |
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iium-499342018-06-20T06:46:24Z http://irep.iium.edu.my/49934/ Effect of mach number on stiffness and damping derivatives for oscillating hyersonic non-planar wedge Crasta, Asha Khan, Sher Afghan TL500 Aeronautics similitude has been obtained for a pitching oscillating Non planar wedge with attached bow shock at high angle of attack in hypersonic flow. A strip theory in which flow at a span wise location is two dimensional and independent of each other is being used. This combines with the similitude to lead to a one dimensional piston theory. Closed form of simple relations is obtained for stiffness and damping derivatives in pitch. The present theory is valid only when the shock wave is attached with the nose of the wedge. With the increase in semi vertex angle of the wedge the stiffness as well as the damping derivatives assumes a high value, and the center of pressure of the wedge also shift towards the trailing edge. Whereas, with the increase in Mach number both stiffness and damping derivative assumes lower values. For higher Mach numbers the stability derivatives become independent of Mach number. From the theory developed some of the results are obtained for wide range of Mach number with remarkable computational ease. International Organization of Scientific Research (IOSR) Journals 2014-03 Article PeerReviewed application/pdf en http://irep.iium.edu.my/49934/1/B011280411-paper4.pdf Crasta, Asha and Khan, Sher Afghan (2014) Effect of mach number on stiffness and damping derivatives for oscillating hyersonic non-planar wedge. IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE), 11 (2vVIII). pp. 4-11. ISSN 2320-334X E-ISSN 2278-1684 http://www.iosrjournals.org/iosr-jmce/papers/vol11-issue2/Version-8/B011280411.pdf 10.9790/1684-11280411 |
| 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 Crasta, Asha Khan, Sher Afghan Effect of mach number on stiffness and damping derivatives for oscillating hyersonic non-planar wedge |
| description |
similitude has been obtained for a pitching oscillating Non planar wedge with attached bow shock at high angle of attack in hypersonic flow. A strip theory in which flow at a span wise location is two
dimensional and independent of each other is being used. This combines with the similitude to lead to a one dimensional piston theory. Closed form of simple relations is obtained for stiffness and damping derivatives in pitch. The present theory is valid only when the shock wave is attached with the nose of the wedge. With the increase in semi vertex angle of the wedge the stiffness as well as the damping derivatives assumes a high value,
and the center of pressure of the wedge also shift towards the trailing edge. Whereas, with the increase in Mach number both stiffness and damping derivative assumes lower values. For higher Mach numbers the stability
derivatives become independent of Mach number. From the theory developed some of the results are obtained
for wide range of Mach number with remarkable computational ease. |
| format |
Article |
| author |
Crasta, Asha Khan, Sher Afghan |
| author_facet |
Crasta, Asha Khan, Sher Afghan |
| author_sort |
Crasta, Asha |
| title |
Effect of mach number on stiffness and damping derivatives for oscillating hyersonic non-planar wedge |
| title_short |
Effect of mach number on stiffness and damping derivatives for oscillating hyersonic non-planar wedge |
| title_full |
Effect of mach number on stiffness and damping derivatives for oscillating hyersonic non-planar wedge |
| title_fullStr |
Effect of mach number on stiffness and damping derivatives for oscillating hyersonic non-planar wedge |
| title_full_unstemmed |
Effect of mach number on stiffness and damping derivatives for oscillating hyersonic non-planar wedge |
| title_sort |
effect of mach number on stiffness and damping derivatives for oscillating hyersonic non-planar wedge |
| publisher |
International Organization of Scientific Research (IOSR) Journals |
| publishDate |
2014 |
| url |
http://irep.iium.edu.my/49934/ http://irep.iium.edu.my/49934/ http://irep.iium.edu.my/49934/ http://irep.iium.edu.my/49934/1/B011280411-paper4.pdf |
| first_indexed |
2023-09-18T21:10:33Z |
| last_indexed |
2023-09-18T21:10:33Z |
| _version_ |
1777411223995809792 |