My three airplanes were constructed out of bolsa wood. To the underside of each craft I attached a small length of fishing line. At the end of the line was a small hook. I constructed a wind tunnel out of cut plexiglass. I positioned a motorized electric fan at one end of the tunnel. For testing,I would then place one of my models within the tunnel, and turn on the fan. I would then observe the ability of the wind force exerted to create lift, both with the plane by itself, and with small amounts of weight, in the form of metal bolts and washers, attached to the hooks.
TThe plane with medium camber and flat lower camber had the greatest lift.
My hypothesis was partially wrong. I had thought that a wing with a high upper camber and flat lower camber would have the greatest lift. The results of my project are important in that they can aid aeronautic engineers in designing airplane wings.
This project is about how wing design of an aircraft effects lift.
Science Fair Project done By Meaghan Yolles