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Unread 27-05-2010, 15:43
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Re: Most Powerful FIRST Team created T-Shirt Cannon

I also seem to recall that in a particular experiment on Myth Busters (shooting a bird out of an air cannon?) they they were getting essentially the same results if they used around 100psi or around 20psi. I can't recall the exact details... Maybe a t-shirt cannon can operate at a much lower pressure, reducing the potential danger.

One could make the barrel wider to extract the same PV work from the lower-pressure air, but heaven forbid we actually do some engineering math

As an aside: I'd be amazed if any of the people on the show actually have a "pressure vessel" welding certification from ASME or AWS.
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