Expert: Mark Janus - 11/13/2007

Question
I have to do an experiment on aerospace or aerodynamics??any ideas im in 10th grade and could really use some help.thanks a ton

Answer
You can study the relationship between the length and width of a flat plate (a card) to the rate at which it rotates when tossed forward....  

It's called an auto-rotating flat plate, and all you need is some thick paper (like construction paper) and a video camera to record for playback to determine the rotation rate (like rpm - revs per min)

Look up autorotating flat plate to read about the flow problem...

Hope this helps,
mj