Make a pulse jet engine with a jam jar

3 Parts:

Steps

Video: Make a pulse jet engine with a jam jar

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Materials you will need:

• Drill and drill bit
• Rubbing Alcohol
• Jam jar
• Lighter

This Experiment Should Only be Performed Under the Supervision of a Professional

1. 1
   Drill a hole 1 cm in diameter through the lid of the jam jar

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2. 2
   Use a ruler to measure your hole

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   Make sure the hole isn't too small!

   

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3. 3
   It's important to note that this project should only be completed under adult supervision since we're dealing with flammable materials

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   Since there's a good change the glass jar could break during this experiment, I recommend making a small tray using cardboard and tinfoil.

   

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4. 4
   Unscrew the cap on the jar, take the rubbing alcohol and pour some into the bottom of the jar

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   You should pour until you have about 1 to 2 cm (approximately the width of your thumb) of isopropyl alcohol in the bottom of the jar.

   

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5. 5
   Carefully shake the jar covering the top hole, making sure you coat the inside of the jar with the rubbing alcohol

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6. 6
   Take your lighter and carefully light the top of the jar

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7. 7
   Between tries, you should blow some fresh air into the jar to prime the next pulse

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8. 8
   Remember to be safe, and enjoy

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If you have problems with any of the steps in this article, please ask a question for more help, or post in the comments section below.

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