How to Make a very simple air rocket
This tutorial shows how to construct a mouth-launched air rocket. He begins with an ordinary strip of chewing gum. After removing the gun, he flattens out the wrapper. He then carefully wraps the long end of the wrapper around his index finger, leaving about half the wrapper protruding off the end of his finger. This creates a cylinder. Then he twists off the protruding end tightly and pulls it off his finger. To launch the projectile, he puts the rocket between his lips and blows. This design and method works much like an air gun pellet. The round captures the air to create pressure and releases it in the direction the user wants the round to go.