Quote:
Originally Posted by freebeard
This is what I thought works before I started lurking on EcoModder. A chamfer, sort of a 'bullet-tail'.
https://ecomodder.com/forum/showthre...ail-33283.html
This is from Morelli. Instead of max camber at 30% of the length it has it at the rear putting the whole body in a favorable pressure gradient. Pending aerohead's agreement. |
I believe that the ability to generate the ring-vortex is predicated upon having the semi-elliptical body cross-section. I have no confidence that a rectangular section could support such annular vorticity.
Morelli's ring vortex borrows heavily from projectile jet-pumping action, seen only in axisymmetric flow of free flight, which would be constrained in ground proximity, as there would be zero active flow from the ground to participate in the phenomena. A perfect belly pan, inclination, and some threshold for ground clearance might be a necessary prerequisite for its operation.Need more data.