Quote:
Originally Posted by skyking
fixing the fender/tail light area is a bigger project and change than I want to try. Phil, do you think the small box cavity effect of those 4~5" sides will help out?
Am I right in reducing that side taper to get the flow attached?
I know at some point the flow down the sides is going to fill in across the back, it is what happens on all of the poor shapes we are dealing with.
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Yes,it should help.Kamm and Koenig-Fachsenfeld was doing this to pseudo-fastback cars at the FKFS.
Here is an example of a mid-thirties Adler which they actually aero-modded the K-form rear onto this bulbous body.The 'dot-dash-dot' line depicts both elevation and plan-view mods.
PS
Carl Breer also tried to blend the rear fenders of the 1934 Chrysler DeSoto Airflow experimental test mule.
As depicted,these mods reduced drag from Cd 0.51,to Cd 0.244.
Here is a schematic of the J-form wind tunnel model tested at the FKFS.The shorter truncations have remarkably higher drag than the K-form truncations (which follow the ideal flow pathway).
The last two (longest length) bodies have the same drag as the K-form.
