- #1
Ghostfire 19
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Hey I am new here and I've got a small physics problem for you guys (and any gals out there).
I am making an air cannon for use in scenario paintball. The way its set up now is with a small expansion chamber that holds very high pressure air. I am wondering if i can use a much larger expansion chamber and use much lower pressures and still achieve a somewhat decent velocity out of the barrel. If this is possible, are there any equations that i can use to calculate pressure vs volume vs velocity? I know there are many other variables, but I am assuming no friction, the valve is 3/4in wide, and the projectile is about 70g. (im doing this so i can charge it with a tire pump rather than expensive compressed co2)
Thanks for the help in advance!
I am making an air cannon for use in scenario paintball. The way its set up now is with a small expansion chamber that holds very high pressure air. I am wondering if i can use a much larger expansion chamber and use much lower pressures and still achieve a somewhat decent velocity out of the barrel. If this is possible, are there any equations that i can use to calculate pressure vs volume vs velocity? I know there are many other variables, but I am assuming no friction, the valve is 3/4in wide, and the projectile is about 70g. (im doing this so i can charge it with a tire pump rather than expensive compressed co2)
Thanks for the help in advance!