Build a Vacuum Cannon | Hacked Gadgets

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    Cannon Vacuum
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SUMMARY

The forum discussion centers on the construction and theoretical operation of a vacuum cannon, as detailed in the Hacked Gadgets article. Participants express confusion regarding the mechanics of the vacuum effect, particularly how air is introduced into the evacuated tube to propel the projectile. The design is likened to steam catapults used on aircraft carriers, highlighting the principles of pressure differentials in propulsion systems. Clear explanations of the vacuum dynamics and the specific mechanics involved would enhance understanding.

PREREQUISITES
  • Understanding of basic physics principles, particularly pressure differentials.
  • Familiarity with vacuum systems and their applications.
  • Knowledge of projectile motion and dynamics.
  • Experience with DIY project construction techniques.
NEXT STEPS
  • Research the physics of vacuum systems and their applications in propulsion.
  • Explore the mechanics of steam catapults and their operational principles.
  • Learn about safety measures when constructing high-pressure devices.
  • Investigate materials suitable for building a vacuum cannon, focusing on durability and pressure resistance.
USEFUL FOR

Hobbyists, DIY enthusiasts, educators in physics, and anyone interested in experimental propulsion systems will benefit from this discussion.

AfRoMaNn
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http://hackedgadgets.com/2006/06/03/vacuum-cannon/

I was wondering how this can possibly work. There's even instructions on how to make it but theoretically, i don't know how a vacuum can do this
 
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I can't see exactly where the vacuum end is or whether it's sucking or blowing, but it would be fairly easy to explain for many here if we had those details.
 
I think he's suddenly letting air into the end of the 'evacuated' tube, which sweeps the projectile along...

IIRC, this is like the steam catapults on aircraft carriers...
 

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