MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
You cannot not take drag into account since drag is what makes this thing rotating. For determining the wind speed you need to solve equations of motion which come from analysis of drag forces on the cups: bigger when wind blows on the inside of the cup, smaller when on the outside. More detailed info is here: https://www.eas.ualberta.ca/jdwilson/EAS327/eas327wind.html (ctlr+f cup anemometer) yet it is only for simplified case with two-arm anemometer, however still shows the correct way of reasoning.