The problem with a lot of these water bottle rocket projects is that they leak where the bottle meets the launcher. In most cases this is a good thing as it’s almost impossible to build up ...

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.

With the male coupling glued to the cap of a bottle acting as a nozzle and a quick, clean release, flights are pretty spectacular. There are many ways to launch an air-water rocket, from the ...