[aerohead]

Originally Posted by kach22i

I don't understand, do the numbers on the top line titled "CONFIGURATION" have something to do with length, or width?

Found this on the general topic.

Drag Coefficient Lookup for Fuselage Screen

*The dimensions remain constant
*Only the features of the fuselage vary,from 'bare',to fully festooned with canopy opening with pilot,windscreen,and engine.
*The Cds are a function of Reynolds number (read along the bottom ),as an aircraft fuselage is large enough the be affected by skin friction more so than pressure drag.
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It appears that your fuselage tool is for supersonic aircraft,based on the nose architecture.
We'd want the blunt nose for 'normal' driving velocities.