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When is the critical Mach number of an airfoil attained ?

The critical Mach number of an airfoil is attained when

Kisan Kumar Asked on 1st October 2019 in Design.
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1 Vote
100% the Mach number some where on the airfoil is unity.
0% the freestream Mach number is sonic .
0% the free stream Mach number is supersonic.
0% the Mach number everywhere on the airfoil is supersonic.

    • 1 Comment

    • Kumar59 1st October 2019

      At some point on the airfoil surface the flow has Mach number 1 while having subsonic free stream flow condition.That subsonic free stream Mach number is called the critical Mach number.

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