Quote:
Originally Posted by aerohead
I've only seen 'bucket' used in the context of lift/drag curves for a limited series of airfoils,based on their angle of attack.
Serious 'flow-turning' has been demonstrated since the 1920s but VGs won't get it done.Typically,blown,or suctioned slots are required.
Georgia Tech continues research in this field.As of last look,the effect still required more energy than it saved.
Based on Cornish's work/report,Alex Tremulis thought we'd have cars of Cd 0.10 by now,using this technology.  |
The bucket term was used casually by the NASA guy's, but only because they noticed the similarity of effect, probably not the right term though.
It was just after looking at their stuff and then chasing down some other leads I thought it warranted further investigation, more as a last ditch alternative for those difficult situations, I wouldn't expect it to be as effective as body taper, but if you can get 5% improvement by proper application, then it would be worth the effort.