Force = mass x acceleration

Acceleration = Force/mass

Pressure = Force/Area

Force = Pressure x Area

Given these 2 fundamental laws of Physics what would make a powerful cannon?

A LARGE bore barrel.

A Pepsi can is about 2.6" in diameter and has an area of 5.3 square inches.

3/4" L copper ID is 0.785" and has an area of 0.438 square inches.

The ratio of areas is 5.3/.438 is 12.1:1

If your chamber is pressurized to 100 psi the projectile in a 3/4" barrel will have 43.8 pounds of force pushing on it when you pull the trigger.

If your barrel was 2.6" in diameter, the soda can will have 530 pounds of force pushing on it when you pull the trigger with the same 100 psi..

The question of practicality comes when it comes to size, weight, volume of the chamber, the time it takes to pressurize it, etc.

Boiling it down to a few simple numbers, a 3/4" barrel requires 200 psi to generate 100 pounds of force.

The same 100 psi will impart 1,060 pounds of force to a Pepsi can.

Just thinking out loud.

Registered users: Bing [Bot], Exabot [Bot], Sear, Yahoo [Bot]