Recent content by Quaboble

Hmmm... well the ammunition is coca cola bottles and cans (both have a near perfect fit for 70 mm piping). The rounds are put directly against the valve which protrudes a bit into the actual barrel so the gas hits the projectile before it expands into the barrel. The pressure tank is made out of...

Alright thanks a bunch for the help man!

Thanks! So it should work like this: pressure: 140 Psi - 14.7 Psi = 125.3 Psi (converting to pascal = 863,913 Pa) cross sectional area of valve: .0125 ^2 x Pi = .00049 meters squared then: 0.00049 meters x 863,913 Pa = 423.317 Newtons Does that sound about right?

Cant really attempt it... I've only had 1 complete term of basic physics, and this isn't even a question assigned to me by school. How will muzzle velocity of the projectile help me?. I am just curious to know if it is possible to calculate the force expelled by the expanding air.

A student designs a gas powered launcher that consists of a pressure tank, a valve and a barrel. When the valve is turned the gas, in this case air, expands propelling whatever is in the barrel. The pressure tank and barrel have the same dimensions while the valve connecting the two has a...

Pressure drop? Not sure what that is :( Volume expansion is twice the original volume

Hello, is it possible to figure out how much force in Newtons is created when a compressed gas expands?