ESDU 86002 provides methods for estimating the drag and pressure recovery of intakes partially or wholly immersed in the boundary layer. The methods, which are semi-empirical, apply to circular, semi-circular or rectangular scoop intakes, with or without boundary layer diverter, and flush rectangular intakes having a shallow entrance ramp of rectangular or NACA curved-divergent planform. The effect of throat just aft of the lip is derived from theoretical calculations taking account of the velocity profile. Empirical methods, based on a limited database, predicted spillage drag and, for scoop intakes, the contribution from profile drag.
| IHS ESDU | |
|---|---|
| Product Category | Standards and Technical Documents |
| Product Number | 86002 |
| Product Name | Drag and pressure recovery characteristics of auxiliary air inlets at subsonic speeds. |
