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Estimation of aerodynamic derivatives in pitch of a wedge in hypersonic flow

Shanbhag, Pavitra and Lavanya , S and Khan, Sher Afghan and Crasta, Asha (2016) Estimation of aerodynamic derivatives in pitch of a wedge in hypersonic flow. In: 2nd International Conference on Design, Analysis, Manufacturing & Simulation, 7th-8th April 2016, Chennai, India. (Unpublished)

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In the present paper a theory for 2-D slender bodies at high angles of attack in hypersonic flow has been developed. This theory has been applied to a sharp thick wedge with attached shock case. Using the theory a relation for a piston moving in a cylinder at any velocity and relations for stiffness and damping derivatives are obtained for zero incidence of the wedge and it is found to be dependent on flight Mach number and wedge semi vertex angle. Results show that the stiffness and damping derivatives increase with the increase in the semi vertex angle. The present method includes the thin wedge case as well, which was covered by Lighthill piston theory, and applies only for small amplitude and low reduced frequency case. Effect of viscosity and secondary wave reflections have been neglected. The results are obtained for wedges of different semi-vertex angles and Mach numbers for a perfect gas.

Item Type: Conference or Workshop Item (Invited Papers)
Additional Information: 7395/51130
Uncontrolled Keywords: Mach Number, Angle of attack, hypersonic Flow, stability derivative
Subjects: T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL787 Astronautics
V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering > Department of Mechanical Engineering
Depositing User: Prof. Dr. Sher Afghan Khan
Date Deposited: 20 Jul 2016 08:55
Last Modified: 27 Dec 2016 19:09
URI: http://irep.iium.edu.my/id/eprint/51130

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