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Re: pic: T-Shirt Launcher, still needs a chasis
Quote:
Originally Posted by squirrel
A compressed gas has far more energy stored in it than a liquid compressed to the same pressure. It took a lot more work to compress the gas, and it's volume changed considerably. Liquids are "incompressible", meaning the volume will change very little while the pressure increases greatly. It's this energy that causes problems with pressurized air in PVC, the plastic can shatter and sharp pieces of it will fly at high speed all over the place.
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Do you have a reference for this by any chance. I agree that compressed gas has more stored energy than a liquid under pressure, but it doesn't make sense that this would cause the PVC to fail, as long as the force exerted on the PVC remains the same in both cases.
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I would say that you are not an engineer until you've both obtained the aforementioned peice of paper AND done something with your tumescent engineers forebrain. - phrontist [more] 
05-04-2009, 03:14
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