Very nice! My kid built something like that about ten years ago for a science fair to test balsa wood wing designs. Straightening airflow is easily one of the hardest things to do. Pulling air out rather than pushing it in is a great way to do that!

This is definitely going on the "things I'll do if I ever get locked up in a room full of office supplies"-list which now carries one entry :D

nice project!

Would be great with a follow-up on paper airplane improvements discovered using the wind tunnel.

Weirdly enough that is actually an experiment recommended by the FAA for high school students. (https://www.faa.gov/education/educators/activities/highschoo...)

Great stuff, note that it was submitted in 2018 too just FYI for title.

There exists one of these at OMSI in Portland, OR.

Thanks pretty usable