Quote:
Originally Posted by Quasimoto
Actually it nothing to do with a ships bulbous bow. The extension is actually an airfoil; a reverse wing. If you look at some of the earlier pics you can see the shape. I made it upside down because it fit the contour of the car better. The effect is the same either way. Airfoils and Airflow [Ch. 3 of See How It Flies]
Section 3.8 on inverted flight. |
I know you made it...but I think the resemblance to a wing has no more relevance to it's effect than it's resemblance to a bulbous ship's bow.
Because the bulbous ships bow and the front of a wing are almost identical in cross-section?
My under-educated guess is that the mpg gain effect comes from having a large and smoothly contoured shape in the most high pressured position on the vehicle so that this high pressured air (resistance) is dealt with more effectively....routed back over the car...as undisturbed as possible.
AND...it looks like better mpg gains than for a partial Kammback? And EVERYBODY says that what's at back matters most??????
Hope your before and after testing is valid.....
note: don't let this opinion bum you out...you made it...you should call it what you want!
