Wing Sweep Critical Mach Calculator
Transonic Aerodynamics: Calculate normal Mach ($M_\perp$), swept critical Mach ($M_{cr}$), and drag divergence Mach ($M_{DD}$) using the Korn equation.
Flight Mach & Wing Sweep
Airfoil Section Geometry & Lift
Transonic Compressibility Limits
Drag Divergence ($M_{DD}$)
--
Mach Margin: --
Normal Mach ($M_\perp$)
--
cos(Λ) Factor: --
Transonic Flow Regime
--
Shock wave severity
Critical Mach Delay
+-- %
Straight Wing MDD: --
Korn Equation Formulation:
• $M_{DD} = \frac{\kappa_A}{\cos\Lambda} - \frac{t/c}{\cos^2\Lambda} - \frac{C_L}{10 \cos^3\Lambda}$.
• Sweeping the wing reduces effective normal Mach to $M_\perp = M_\infty \cos\Lambda$, delaying shock stall and wave drag divergence.
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