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Re: Most Powerful FIRST Team created T-Shirt Cannon
Yes they are. I had several in high-school, including a propane powered one. I feel the fuel-powered cannons are safer because the cannon is not sitting at full pressure with any small cracks continuously growing waiting for failure. Instead the pressure is applied rapidly, where the high strain rate tends to result in higher material strengths, and the pressure is prevented from building to critical levels because the projectile is already flying out and there are inevitably leaks around the ignition source and the threaded-on end cap.
I also found that one only needs a small combustion chamber, my best one was 1ft of 4" pipe, it could utilize the full length of a 10ftx2in barrel.
The only failure I've ever experienced with a pvc cannon was the pneumatic one.
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Theory is a nice place, I'd like to go there one day, I hear everything works there.
Maturity is knowing you were an idiot, common sense is trying to not be an idiot, wisdom is knowing that you will still be an idiot.
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