Quote:
Originally Posted by vskid3
Here's a link to the patent text. It says the vertical bulkhead only offers a slight increase vs the partial tonneau alone. It looks like that truck is a long bed, so I'll have to adjust some for my short bed. If my logic is correct, it's the size of the open area that's the money maker, so for my truck I would probably be best with a 30-40% cover to provide an optimal vortex size. Does that sound right, aerohead?
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I think it's a good guess,short of wind tunnel testing.
In a later article about pickup aero,it was mentioned that part of the performance criteria for the partial cover,was to have it open to the locked-vortex' low pressure core.
With the open cover,this low pressure was communicated under the cover to the inner face of the tailgate,where it increased the pressure differential across the gate.
It is this differential which is responsible for the drag reduction.
