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The Combustion Of Isopropyl Alcohol

Published on Mar 17, 2016

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PRESENTATION OUTLINE

MINI CANNON

THE SAME SCIENCE USED FOR COMBUSTION POTATO GUNS!

MAJOR PARTS

  • 90 percent Isopropyl alcohol
  • Piezoelectric igniter
  • Alcohol is the fuel for the cannon
  • Piezoelectric igniter starts the combustion

PIEZOELECTRICITY

  • Discovered by Jacques and Pierre Curie in 1880
  • Some minerals generate electricity under stress
  • Example: Quartz
  • Igniter works by striking quartz
  • Inverse Piezoelectric effect

COMBUSTION

2(C3H8O) + 13(O2) ---> 6(CO2) + 16(H2O)

WHAT'S HAPPENING?

  • The alcohol in the air ignites
  • Creates a rapidly expanding mass of air
  • The air creates pressure inside the chamber
  • With nowhere to go the air forces the projectile out the barrel
  • The barrel leads the projectile towards a target