ESDU 74008 gives curves (for inviscid incompressible flow) of critical Mach number at a point on the aerofoil surface plotted against the local pressure coefficient and the surface slope at that point. The method is based on first-order calculations but is also equivalent to second-order. If an exact method is used to calculate the pressure coefficient, a method is suggested of using ESDU 74008 to provide a comparable accuracy for the predicted critical Mach number.
| IHS ESDU | |
|---|---|
| Product Category | Standards and Technical Documents |
| Product Number | 74008 |
| Product Name | Estimation of critical Mach number for an aerofoil from its low-speed pressure distribution. |
