I am throwing this thought out as there are many people much wiser than myself on this forum. I was reading in another forum about wind tunnel testing and it was brought up that most air craft manufactures did wind tunnel testing on smaller models of the actual aircraft. I was thinking of making a minature wind tunnel out of some acrylic tubing I have and having my flow bench suck through it. Now let's say I have a square or rectangular block of wood mounted in the middle of the tube and flow air around it at a certain depression and get a CFM reading. Then I work on streamling that block of wood and flowing again at the same depression. If I get an increase in cfm at the same depression am I getting a better CD (coefficient of drag). Am I up in the night or can I make this work?
John