a 7inch fan unit which I believe produced somewhere around 18 to 20lbs static thrust
What I find a little weird is that you disregard everything anyone says that is not in line with what you want to hear, but when one guy makes the above I think, I believe statement
even when the proof to the se high fallutin "theory" as you so like to bag, is right there
RIGHT WHERE?
I thought we were talking about ducted fans with near turbine performance. But I guess we were mislead.
BTW - There was a guy here in the States (Josh Harel) that developed a 7.5" Prop-fan that put out between 12.5# (3 blade) and 16.5# (4 blade). Top speeds were around 90 - 100 mph.