This windtunnel was designed for the Innovation Institute, an afterschool program for kids based in Newton. The Innovation Institute wanted a way to teach kids about aerodynamics for a class on rocketry.
The windtunnel is made from a large acrylic tube. At one end I attached a brushless electric motor and propeller which would typically be used on an RC aeroplane. At the other end, I built a flow laminarizer out of drinking straws. The purpose of the flow laminarizer is to ensure that air entering the windtunnel is travelling in a straight line with no rotation.
To power the motor I converted an ATX power supply (Designed to power a PC) to a bench supply.