[TexasGator]

“Yes that’s clear, but if you had watched this video that “WhoisAlanGreenspan?” linked to, you would have seen that this professor also showed the effect of air blowing against a static rotor just as “The CoFlow Jet cylinders developed by Zha...””

Nope. When he blew on the rotor evenly as a wind blows on a CoFlo there was NO effect, i.e., no pressure difference.

[higgmeister]

Wait a minute, when he blew air at the edges of the static rotor cylinder it gave the same effect as Professor Zha's design showing the pressure difference.

I bet you didn't watch the whole video did you?