How To:

DIY Rocket Propellant! How to Cook Solid Rocket Fuels Using Common Household Ingredients

Cooking isn't something that interests me much, unless it results in a fast burning fuel and a successful rocket launch!

WARNING: Ignition of an incendiary or explosive material may not be legal in your area, so check local laws before attempting. Use of this video content is at your own risk.

Using some kitchen chemistry and a few common household items, I tested a few different methods for DIY rocket fuel.

The main components of this composition are a brand of stump remover, which is 100% potassium nitrate (KNO3), and plain white table sugar.

When mixed together in ratios of 60/40 by weight, and placed on medium heat, they melt into a creamy brown liquid. This is because the sugar caramelizes and absorbs the KNO3. The smell is similar to that of making candy, and that's why this is sometimes referred to as "Rocket Candy" or "R-Candy".

When it's runny enough, it can be poured into a casing to cool down and solidify. I'm using these Mega-Block LEGOs. Watch out, it's hot!

I tried some more batches with other ingredients added, like water, corn syrup and even a little home made rust powder.

All the fuels burned a little differently, but overall I was most impressed with the batches using the homemade rust.

I made another batch and packed it into a homemade rocket motor casing that had a nozzle made from kitty litter. I was impressed to see it actually worked! I think this rocket shot up a couple thousand feet.

If you missed the video at the beginning of the article, scroll up or watch it directly on YouTube! If you liked this project, perhaps you'll like some of my others. Check them out at thekingofrandom.com.

5 Comments

i love your videos you smart genius :D

Like your videos too. impressive .

Just wondering, what kind of output do you get out of this? As in, how much could this stuff lift.

I would also really like to know this. I want to build an aluminium rocket...

Thompson ur cool I like u I saw ur many vedios I got impressed and subscribed can u now only give me a idea of making a project for my science Edex iam in 7th grade can u pls do it 4 me

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