Aircraft Zero-lift Drag Coefficient with One Engine Inoperative

The aircraft drag polar is expressed as:

..\Images\IMG00026_shg.gif

For parabolic drag polars:

..\Images\INFO0259_wmf.gif

where:

..\Images\INFO0260_wmf.gif

is the wing aspect ratio.

..\Images\INFO0261_wmf.gif

is the Oswald's efficiency factor.