http://www.apogeerockets.com Prototype of a 1-liter water bottle rocket that my daughter designed using the RockSim software. The goal is to keep the 1-liter bottle in the air as long as possible without using a parachute or changing the configuration of the rocket in flight. It is not as easy as it looks. Launch was conducted in the field behind Apogee Components model rocket shop. It was a cold January day, but the skies were brilliant blue, so it made tracking the rocket easy.