Quote:
Originally Posted by rumdog
Well geez... i figured the round edge and a little surface friction and increased frontal area may be better than a sharp edge and the huge trailing eddie.
Ok so then freebeards rounded additions should help in this situation... on trailer front. Not sure how much they would help in full frontal flow?
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Here is a pictorial drag table from Walter Lay's research illustrating what a softened leading edge can do.
This research was repeated for the 1955 VW bus by M'o'ller,who gor similar numbers
Here,softened edges get Carr's brick Cd 0.21
Here's a trailer,very similar to Carr's wind tunnel,and similar Cd
