Feasibility of wind tunnel testing at Re~10^4

zonexo

hi,

I know this is a bit off topic but I believe ppl here should 've the knowledge to help answer this question....

How difficult is it to get cl/cd of airfoils for Re~10^4 in wind tunnel. Currently, the objective is for static case. However, it may be extended to heaving/pitching cases.

I tried to do an approximate calculation using fluent to get the cd of an airfoil at Re~10^4. It's around 3.8e-2. For a wing of 15x3cm, the drag's around a few grams. Are load cells of this range popular? I've not used load cells before but a search on the net seems to give me the impression that they are on the expensive side. Am I right?

Hope someone can help. Thank you.