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Would small NACA ducts offerings of twin vortices with no protrusions do the job without the knife edges? The vortices would be counter-rotating and wound be on the inside of the skin/body for a very short time, inches.
Would the negative of a NACA duct, an air tab brand pointy end forward also do the job? Were a maximum size limit is not as big of a consideration, and no holes wanted .
Witch would be more productive for jumping the tire hole, Twin co-rotating or counter-rotating?
Co= all tabs +15° , counter= alternating + - 15°
In the race industry Ive seen them use single or co-rotating like in the pic in post#12 but seldom counter-rotating (as in pairs. At opposite angles +15°and -15° to flow.).
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1st gen cummins 91.5 dodge d250 ,HX35W/12/6 QSV
ehxsost manafulld wrap, Aero Tonto
best tank: distance 649gps mi 24.04 mpg 27.011usg
Best mpg : 31.32mpg 100mi 3.193 USG 5/2/20
Former
'83 GMC S-15 Jimmy 2door 2wd O/D auto 3.73R&P
'79 Chevy K20 4X4 350ci 400hp msd custom th400 /np205. 7.5-new 14mpg modded befor modding was a thing
87' Hyundai Excel
83 ranger w/87 2.9 L FI2wd auto 18mpg on the floor
04 Mitsubishi Gallant 2.4L auto 26mpg
06 Subaru Forrester XT(WRX PACKAGE) MT AWD Turbocharged 18 plying dirty best of 26mpg@70mph
95Chevy Blazer 4x4 auto 14-18mpg
04 Chevy Blazer 4x4 auto 16-22mpg
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