[lumberjim]

Procedure/Experimental Design: Using Grant's model airplane & Jaime's treadmill, they do a small scale test to see if the concept is feasible. Setting the treadmill to 11.3 mph (the take off speed of the model plane), the model plane went forward, but could not take off due to the short length of the treadmill. Next, using butchered paper dragged behind Adam's scooter, they put the plane on the paper to see if it can take off. The airplane does take off before the paper runs out. As Adam & Jaime explain, unlike a car, where forward motion is derived from spinning wheels, forward motion on an airplane is derived independent of the wheels through the propeller. Thus, forward motion can be achieved on a conveyor belt.