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Bilateral estimates of the critical Mach number for some classes of carrying wing profiles. (English) Zbl 1017.76039

Summary: We consider the estimation on critical Mach number \(M^*\) for a class of carrying wing profiles with fixed angle of attack. The Chaplying gas model is used to calculate the velocity of the flow. The original problem is reduced to a special minimax problem. A solution is constructed for an extended class of flows including multivalent ones, hence \(M^*\) is estimated from above. For a fixed interval \([0,\beta_0]\), \(\beta_0\cong 3\pi/8\), an estimate on \(M^*\) is given from below.

MSC:

76G25 General aerodynamics and subsonic flows
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References:

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