(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)
Click on image to view larger version.


Figure 8


Fig. 8. Lift:drag polars for the Eppler 387 wing at Reynolds numbers ranging from approximately 1x104 to 6x104. Each CL (CD) curve is plotted twice, for increasing and decreasing {alpha} from –12°–19°. The two sets of curves cannot be distinguished. Blue horizontal line marks the preferred CL of the wing.