Quote:
Originally Posted by AEOLUS
Nice work! 
What was orignal Cd of car and how you meassure 0.176?
How looks cofiguration #4?
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1) CarsDirect.com published a Cd 0.29 for Subaru's Impreza Wagon.
2) To estimate a Cd capable of explaining how the Impreza's fuel economy could change from it's baseline mpg, to any different mpg, as the ONLY variable in the calculus, I used a thermodynamic energy balance protocol published by Chrysler Corporation in December, 1941, referencing the SAE Paper, aerodynamic engineering evaluation of Chrysler's Cd 0.244, 1934, DeSoto Airflow, aerodynamic test mule, by Carl Breer et al..
3) The 'conditions' for the calculus I used can be found at the 'Think Flight' thread at the other Forum here at EcoModder.com.