Calculating Pressure and Volume for an Air Cannon Tank

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SUMMARY

The discussion focuses on calculating the necessary tank pressure and volume for an air cannon designed to project a 1.4 kg mass at a velocity of 83 m/s. The barrel dimensions are specified as 4 meters in length and 6 inches in diameter. Participants suggest starting with a tank size of one square foot at a pressure of 6.5 bar to effectively fill the barrel and achieve the desired projectile speed. The conversation emphasizes the importance of understanding flow restrictions and valve selection for optimal performance.

PREREQUISITES
  • Basic principles of fluid dynamics
  • Understanding of pressure-volume relationships (Ideal Gas Law)
  • Knowledge of pneumatic systems and components
  • Familiarity with valve types and their applications
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  • Research the Ideal Gas Law for pressure and volume calculations
  • Explore pneumatic valve types and their impact on flow rates
  • Investigate tank sizing for pneumatic applications
  • Learn about flow restriction effects in air cannon designs
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Engineers, hobbyists, and students involved in pneumatic systems, air cannon design, or fluid dynamics who seek to optimize performance and efficiency in their projects.

RyanDM
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Morning all,

I am working on a Air Cannon Project and have hit a stumbling block.

I am trying to work out what tank pressure and volume I would need to project a 1.4kg mass to 83m/s when it leaves the barrel.

The barrel the mass will travel down is 4 meters long and 6inch in diameter, would anyone be able to help?

Thanks in advance!
 
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Welcome to PF.

The flow will be limited by restriction.
How will you connect the air tank to the barrel?
What valve will you use?
 
Well that's six and a half square feet of barrel you need to fill just to get your missile to fall out of the end
So... Start with a one square foot tank six and a half bar and go up
That's the fun way
If this is not for fun then it's proly homework
 

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