Quote:
Originally Posted by euromodder
They don't need that if they can make it quite literally out of thin air with energised air.
Keeping the tailgate closed also helped as it created a bubble of air in the bed - where physically there's nothing there (but air).
Rear spoilers on a trunk that end up on the template also reduce FC, despite the sharp drop on the rear window.
Simple, flat end-plates on sticks reduce FC when the plates are sized to what a full boattail would be like at that distance.
So apparently, you don't necessarily need full-featured, physical hardware right up to the tail to better streamline a vehicle.
You likely won't get the maximum benefit out of them, but you also don't get the various inconveniences of a physical boattail.
If these vortices can enclose a boattail-bubble of air, you've boattailed the truck with ... nothing but air.
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I have no data from empirical research which demonstrates that the 'bubble' can exist until you've run the boat tail out to 80% of total length.
*Prandtl couldn't do it
*Rumpler couldn't do it
*Jaray couldn't do it
*Dornier couldn't do it
*Klemperer couldn't do it
*Lay couldn't do it
*Heald couldn't do it
*Elliot couldn't do it
*Kamm couldn't do it
*Fachsenfeld couldn't do it
*Arado couldn't do it
*Messerschmitt couldn't do it
*Hoerner couldn't do it
*Morelli/Pininfarina couldn't do it
*NASA couldn't do it
*Volkswagen couldn't do it
*Continuum Dynamics couldn't do it
*AeroVironment couldn't do it
*Renault couldn't do it
*March couldn't do it
*Oldsmobile couldn't do it
*Aerosmith couldn't do it
*Rutan Brothers couldn't do it
*General Dynamics Electric Boat Division couldn't do it
*Lockheed 'Skunkworks' couldn't do it
*W.A.Mair couldn't do it
*---------------------------------------------------------------- ad infinitum!