Let's just hope it stays "interesting!" It looks like we've obtained most of what we need to begin design as far as where components should be placed, but shapes and sizes are still a bit unclear. With the book recommendations I've recieved, I'll be checking out the library (we don't have the best one around, but it might have SOMEthing), ebay, and amazon.com. I plan to have a pitot of some sort, and it looks like there are a few smoke generators out there for visualization. And, of course, tests will be photographed for the most part! Thanks for your help.. -Tony << Hi Tony, That's one interesting project you have got there! Here is web site: http://www.aerolab.com. It is a company that manufactures/builds wind tunnels. They have some nice pictures in their website. And check this out(NASA's): http://www.grc.nasa.gov/WWW/K-12/BGA/Dan/wind_tunnel_int.htm you may find it useful! They have beginers guide to aeronautics etc. They talk about Bernoulli's Equation etc. Remember the pitot tube when you build the wind tunnel. (I forgot the chemicals someone once suggested for visualizing flow patterns :-( ). ...and use a webcam to catch the flow patterns...! How beautiful Physics is! Goodluck! Vetri UCSF San Francisco >> -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads