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Originally Posted by aerohead
you'd be looking at a 13% drag penalty. It would require around an 80mm radius to mitigate vortex formation, the entire length of the roof, however, complicate the build by about 1,000%,
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Thanks for all details. I guess 13% penalty in nothing and don't worth the extra fabricating effort.
Quote:
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You'd go from zero, up a 17.5-degree incline, top out at the new height, along an arc, then just descend down the same 17.5-degree incline, blending into the metal roof.
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1-Is it possible to see this?
2-What about the other axes. I guess it's better to be smaller to the rear, but how to know the best shape?
3-How about the final transition ''blending into the metal roof''? Is the best shape go down at the rear, is it go straight (let say down 17.5°) or is it better to go parallel to road a bit like the rear of a Tesla Model 3?
I have all those question because I have limited aerodynamic experiment.
I think I can do something with Solidworks flow express. I don't know how it work and I don't know if this flow express have enough features to calculate the best shape I'm looking for.