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Old 05-30-2011, 12:21 AM   #13 (permalink)
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Join Date: May 2009
Location: Charlotte NC / York SC
Posts: 727

05 DMax - '05 Chevrolet 2500HD
90 day: 18.48 mpg (US)
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I seem to recall the navy was experimenting with stepped hull design for high speed craft.
They got the idea from some shark or snake, memory not working.......scales/sawtooth shape.
It worked but was impractical to build and keep clean.
Seems it had a side effect of pulling air in from the sides due to the low pressure in the channels. That reduced drag which was the design intent.

I can't understand why my MPG's are so low..........
21,000lb, 41' Toy Haulers are rough on FE!
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