IIRC the best results come from the closed Kamm tail. The open boattail has been done too with some success. You may want to repost this in the "Aerodynamics" section. Search this forum for "box cavity". That may be close to what you are describing.
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60 mpg hwy highest, 50+mpg lifetime
TDi=fast frugal fun
https://ecomodder.com/forum/showthre...tml#post621801
Quote:
Originally Posted by freebeard
The power needed to push an object through a fluid increases as the cube of the velocity. Mechanical friction increases as the square, so increasing speed requires progressively more power.
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Last edited by COcyclist; 01-13-2014 at 05:24 PM..
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