Quote:
Originally Posted by chuckm
I hope I'm not misunderstanding you... if I attached a short Kamm profile lip to the top of my rear windshield area, I might gain a little benefit?
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It's the only thing I would have great confidence in as to real drag reduction.Profile drag is the largest component of aero drag,and it is governed by the pressure differential between the stagnation pressure at the nose,and base pressure of the wake.------------- If flow is "clean" (without significant separated flow) up to the point of the vehicle's maximum cross-sectional area,then it's the aftbody which dictates where the flow will ultimately separate,and where the flow separates dictates the base pressure,which dictates profile drag.-------------- Anything you do to lengthen the body,while simultaneously reducing wake area,is,by defination,streamlining,and the only known path to lower drag.------------------- Any benefit can be calculated as a direct function of wake area reduction.------------- This is why I developed the aerodynamic streamlining template.If you follow it,you get guaranteed drag reduction as a function of your new wake area.Size matters!