Quote:
Originally Posted by ennored
If the Dryden van and all the boattails out there were right, surely the the boattails shown there hurting or barely improving the drag couldn't be right. What was wrong?
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I'm not totally following that series of images either, but will say that when the top angle drops below 20 degrees (safe) to 24 degrees (one or two beyond the attached flow threshold, depending on who you ask) the drag goes up substantially. I think it's demonstrating the numbers game of rear-end angles...