Airplane & the conveyer belt

[Anomalocaris]

I guess another way to experiment this would be to get a rubber band airplane, wind its propeller and just let it go. But I remember that I always had to throw it, I think it would not fly without the throw.

The minimum forward speed at which airflow over an airplane’s can generate enough lift to keep the plane airborne is called stall speed. 

when you let go of a rubber band plane without giving it a throw, it starts to fall downwards under gravity while also accelerate forward under the power of rubber band.   the question is will the plane hit the ground before the rubber band accelerate the plane above stall speed.

i guess typical rubber band is not powerful enough to win the race if you drop the plane from man height.   you can give rubber band a better chance by dropping the rubber band plane from a high balcony,   or use a stronger rubber band.