Quote:
Originally Posted by NovaEona
Boat-tailing the rear may or may not be possible, but I'll look into it.
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The rear of the vehicle is where your largest gains are to be made. The other details mentioned are worth investigating, but the back is where you should focus your attention.
bestmapman: great image! I can't tell if you're just having fun, but I can't resist pointing out that aerodynamically it's not quite right.
The best front shape for a large vehicle is something more hemispherical, like the NASA modified van images trebuchet posted.
Also, the rear angles as drawn (copy/pasted?
) are far too steep to be effective. Anything sharper than your Prius image is too much. Or, again look at the rear of the Nasa van tail and extend the lines out further. Of course with a giant cross-section like this, drawing the boat tail out to its pointy conclusion might make it 20+ feet long!