Hi All,
An interesting thing in that article is that if they turned on the blowers on the top and bottom Coanda slots only, the drag went up. Not until all four slots (top, bottom, left and right) were turned on did the drag go down. So, the airflow has to be tripped symetrically all the way around the rear of the vehicle.
Another intersting thing is it only took 1/2 PSI to have a good effect.
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