Water rockets, also called Bottle rockets, are like their model rocket cousins, except that these are powered by a combination of water and air pressure instead of a chemical propellant. The pressure vessel, the engine of the rocket, is usually a used plastic soft drink bottle.
Water and air are used in combination, with the air providing a means to store potential energy, as it is easily compressed, and the water providing momentum when ejected from the rockets nozzle (Newton's third law).
More on [ Water rocket ]

Water Rocket Index - Many tips on safety, building water rockets, fins, recovery systems, aerial photographs, building a launcher, T-shirt design, and a computer model free download.
Water Rockets at the Ghent University - Hydroaeropropulsion Rocket Research Labs AKA The Most Unspeakable Project Of The Department. The water rocket craze hits again ...
Water-rockets - Group about homemade rockets powered by compressed air and water, and related topics.
Meta Description: [ water-rockets: Water Rockets ]
| Steam rocket | |
| Next Video | |