Okay, for the benefit of all the SLF and Vulgar Curiosity Seekers watching this thread, I will ask the 'nice but dim' question.
I thought I knew a bit about aeroplanes, but M2Dude, CJ and now Clive are pushing my knowledge and understanding to their limits. I see them on Clive's two fabulous images and I've heard some of the pilots - Exwok and Bellerophon - talk of it, but up to now it was something I could take for granted and move on. Now I have to come clean and ask. Vortex lift for dummies please gentlemen?
The end on view is very dramatic and I can only surmise the rotor of air above the wing somehow accelerates it to reduce its density still further, thus generating lift. More lift indeed than the cord profile can provide without creating too much drag. Close? Or wooden spoon for Rog?
Roger.