Quote:
Originally Posted by ecomodded
I could use some tips and info on the finer aspects of aeromodding , Its easy to miss little details that matter.
I am curious of the cars side aerodynamics at the moment , I am assuming they should get the same attention as the roof , by adding a camber point like it does for the roof in the boat tail template ?
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Here is a plan-view of the 'template.'
It's based upon a symmetrical wing/strut section of minimum drag (approx.4:1 length/thickness).
Here is the 1957 MG EX 181 land speed record car,with Cd 0.12.It has a similar plan-view profile for the rear.
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Since the side flow is closer to road speed,it does not have as much kinetic energy to impart into the turbulent boundary layer,it cannot 'carry' as fast a curvature as over the roof.Many low-drag cars have used this more relaxed profile and I believe that,short of having a wind tunnel to experiment with,that this profile is a sure-thing.