Recently, C block engineering, was given the assignment to create a potato cannon using PVC pipe. At the start of the project we used a computer aided design program to create a potato cannon with exact measurements and materials. After each group completed the design and made a presentation outlining safety and beneficial features of our cannon. After the presentations we as a class chose which cannon we wanted to build and proceed to do so.
My design included an 2 foot 4"diameter combustion chamber to allow for a larger explosion and more power. For a barrel I used a 5 foot 2" diameter section. The rest of the design was very similar to the others which just included barrel chamber reducer as well as screw on cap to allow access to the combustion chamber. For an ignition system I designed a handle and grill lighter assembly to allow an easy fire system. 
This project taught me how to use a CAD program as well as how controlled explosions work and how to create one. This project was defiantly my favorite project and I enjoyed the time i spent on it.
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