Reynald's number
bank to turn- fair enough -
Now then - here is an example of how a your good explanation of RN can go wrong.
Suppose FXD reads your reply and asks " why is a low number different than a high number " and whatthe blazes IS a "full size " wing.
You know and I know that low numbers mean that the LOW RN NUMBER means that the wing will not lift as much weight but the fact that the scale is not a straight line from 1-10 is not obvious to a newcomer.
As for" full scale " as a comparison.
This one is still a mystery to me that it is a common reference. .
The full scale chord of "what" comes to mind.
a 3 ft chord? a 12 ft chord?
The ability of model wings to work in the sizes commonly used -is the question I typically get -in a face to face situation.
Typical example - why does a model wing with a avg chord of 15" work well for aerobatics if it has a wing loading of 30 oz ft--yet a slightly smaller -yet absolutely perfectly scaled down model having an avg chord of 12" and the same wing loading -flys noticably differently
The question is -what is the scale effect curve like if these seemingly tiny differences are so easy to see in actual practice?
How would you answer that?