Estimation of Drag divergence Mach number for General Transport wing

Singh, Manish K and Dhanalakshmi, K and Mathur, JS (2012) Estimation of Drag divergence Mach number for General Transport wing. In: 14th AeSI CFD Symposium, 10-11 August 2012, Aerospace Engineering Department, I.I.Sc. Bangalore.

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Abstract

Drag divergence Mach number plays a major role to decide the maximum operating speed without a severe drag penalty for high speed subsonic civilian aircraft. Initially drag coefficient (hence drag) increment with Mach number is not very significant but beyond a certain Mach number drag coefficient registers rapid increment. This Mach number is called ‘Drag divergence Mach number’. In order to operate efficiently in high subsonic regime, drag divergence Mach number should be sufficiently higher than operating Mach number for which aircraft is designed. In this context, the objective of the present work is to assess the drag divergence Mach number for a general transport wing using the Euler solver ‘JUEL3D’ for lift coefficient of 0.4, 0.5 and 0.6 and also to estimate movement of aerodynamic centre with Mach number.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Drag divergence Mach number, drag, high subsonic speed, wing, Aerodynamic centre
Subjects: AERONAUTICS > Aerodynamics
AERONAUTICS > Aircraft Design, Testing & Performance
Division/Department: Computational and Theoretical Fluid Dynamics Division, Computational and Theoretical Fluid Dynamics Division, Computational and Theoretical Fluid Dynamics Division
Depositing User: Mr Manish K Singh
Date Deposited: 14 Sep 2012 10:17
Last Modified: 25 Apr 2013 09:16
URI: http://nal-ir.nal.res.in/id/eprint/10939

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