Vortices

Idea
A vortex always forms when something passes through a liquid or gas. There are three vortices concepts associated with flight: The goal is to show these using a fog machine and small hand thrown airplanes and/or wind tunnel.
 * The "starting vortex" that leaves the wing.
 * The "bound vortex" that sticks to the top of the wing.
 * One that comes off the wingWingtip_vortices tips.

Subsystems

 * Fog Machine
 * Wind Tunnel