Nonplanar doublet-point method for supersonic unsteady aerodynamics

Tewari, Ashish (1993) Nonplanar doublet-point method for supersonic unsteady aerodynamics. In: 34th AIAA/ASME Adaptive Structures Forum, 19-22 Apr 1993, La Jolla, USA.

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Abstract

New method is devised for the calculation of pressures and aerodynamic influence-coefficients on nonplanar lifting-surface configurations oscillating in a supersonic freestream. The method is an extension of the methodology introduced in the planar supersonic Doublet-Point scheme of Ueda and Dowell, which is based upon the concept of concentrated lift forces and uses the acceleration potential doublet as an elementary solution of the wave equation.These features make the method capable of being incorporated in a unified code for both subsonic and supersonic speeds,as well as amenable to rapid aeroelastic calculations. Results on various lifting-surface configurations are in agreement with other supersonic13; oscillatory methods, validating the Doublet-Point approximation for nonplanar supersonic case.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Aerodynamic coefficients;Airfoil oscillations;Free flow;Lift devices;Supersonic flow;Unsteady aerodynamics;Kernel functions;Leading edges;Lifting bodies;Rectangular wings;Surfaces;Swept wings
Subjects: AERONAUTICS > Aerodynamics
Division/Department: Aerodynamics
Depositing User: M/S ICAST NAL
Date Deposited: 13 Mar 2008
Last Modified: 24 May 2010 09:55
URI: http://nal-ir.nal.res.in/id/eprint/4387

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