B of Drag Polar in Clean Configuration

The aircraft drag polar is expressed as:

..\Images\INFO0218_wmf.gif

For parabolic drag polars:

..\Images\INFO0219_wmf.gif

where:

..\Images\INFO0220_wmf.gif

is the wing aspect ratio.

..\Images\INFO0221_wmf.gif

is the Oswald's efficiency factor.