Practise and challenge your friends! Download the Water bottle Rockets PDF(378 Kb). Adobe Acrobat is required. SAFETY: This rocket uses air pressure to fling a bottle at high speed 20–50 metres.

A team of six area students ranging in age have shot for the stars and qualified for the national American Rocketry Challenge ... has developed an autonomous air brake and parachute system ...

When the rocket is released from the launcher, the high pressure inside the bottle equalizes with the air outside ... as part of an the NPL Water Rocket Challenge, an annual event to encourage ...