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Unread 25-03-2011, 03:00
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AKA: Rahil Mehta
FRC #0668 (The Apes of Wrath)
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Re: Using a Solenoid in a Pneumatic Cannon

Quote:
Originally Posted by wiiking123 View Post
Also, would the tubing that comes with the standard KoP be able to release the air from all the reservoir tanks fast enough?
Won't really come close (I know these calculations are for incompressible fluids generally, but for these purposes, they will work):

If we assume 120psi (827370.84 Pa)
pressure = (.5)(density)(velocity)^2
velocity = sqrt((pressure)/((0.5)(density)))
velocity = sqrt((827370.84)/((0.5)(1.225)))
velocity = 1162 m/s

With the tube being used, we only have a 1/8" diameter, which is 0.003175m
air flow = area * velocity
air flow = (diameter/2)^2 * velocity
air flow = 0.003 m^3/s

mass flow = 0.0036 kg/s

Basically, you're going to have 3.6g of air coming out every second, which is not even close to enough to move a t-shirt (and this is assuming 100% efficiency)

If you are working on a low budget, but have a robot chassis lying around, message me and I could put together a bill of materials on our t-shirt shooter. (Cost about $250 all parts from Home Depot)
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