Rocket Launch Tau Beta Pi (TBP)

Contestants will construct a rocket made from a typical 2-liter soda bottle.  The rocket will be propelled with compressed air and water.  The bottle will be turned so that the opening is down and will expel water and air downward, thus pushing the bottle upward.  Aerodynamic modifications should be made to insure maximum flight distance given a set air pressure.

RULES:
 Students, in groups of four, will be provided one 2-liter bottle to make into a rocket.  No commercially finished or model products may be used. Students should place their school name, the rockets name and students names on the rocket.

1. The pressurized portion of the rocket must consist of one plastic 2-liter pop bottle. The manufactured structural integrity of the bottle cannot be altered. In other words, Don't poke a hole in the bottle!!! No metal parts will be allowed on the pressurized rocket body.
    
2. All energy imparted to the rocket must originate from the water/air pressure combination. No other potential or kinetic source of energy will be permitted.
    
3. All rockets will be launched at a pressure not to exceed 100 pounds per square inch.  The final pressure will be determined by the judges, but will be the same for all rockets.  Once the rocket is pressurized, no student can touch or approach the rocket.
    
4. Each rocket launched must pass a safety inspection.