slugEffect of Angle of Incidence on Stiffness And Damping Derivatives for Oscillating Hypersonic Non-Planar Wedge
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2014, Vol 2, Issue 4
Abstract
A 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 high value, and the center of pressure of the wedge also shift towards the trailing edge. For high Mach numbers the stiffness and damping derivatives become independent of the Mach numbers. From the theory developed some of the results are obtained for wide range of Angle of incidence with remarkable computational ease.
Authors and Affiliations
Asha Crasta, S. A. Khan
Keywords
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