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 ...

The bottle must be made entirely of plastic, it must have ... Bear in mind that if you change the design, you also need to consider extra safety precautions. Rockets work by ejecting something ...

It’s an automatic parachute deployment system that you build into the nose-cone of your rocket. The main portion of the build is made out of plastic soda bottles (2 liter size) to end up with a ...

Doing what he does best, Bill Hammack, AKA The Engineer Guy, spends an enlightening 13 minutes explaining not only how two-liter plastic soda bottles are made, but also how their seemingly simple ...

Engineer Guy Bill Hammack explained the ingenious design behind a recyclable two liter PET plastic soda bottle.

Dr Yan Wong explains the theory behind rocket power, and the children use plastic bottles filled with water ... investigation into simple water rocket design and construction.