Drag divergence Mach number for a given airfoil is explained. The increase in drag coefficient and the problems caused by this are explained. The skin friction drag, pressure drag and wave drag concepts are explained. The sound barrier is illustrated. Supercritical airfoils which have low drag divergence Mach numbers are mentioned.
#aerospaceengineering #gateaerospaceengineering
#aerodynamics
#fluidmechanics
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