Although there is room for improvement, it's only 10 counts. Lengthwise it's at ~80% of the full template (0.083). I'd guess that a flat chop vs the diffuser would help a bit. Fences can help. Shark scales are basically mini fences to prevent vortices. I'm also impressed with how little lift the shape has.
Im in the process of analysing the template as a prism. Cd was 0.247 at 200 iterations, and is now hovering at 0.192 at 262 iterations. It's been 7 hours. I need a 6 cpu xeon
. Btw I had an car shape long ago which I called the aerowog. This reminds me of a gobi or pollywog. Peak air speed is 42 m/s. i intend to lower this by beveling the front end.