I built a PULSED ROCKET ENGINE

Video idea: create a launchpad for 3d printed rockets and measure how high they will fly using different rocket nozzle designs+ And: Tomatoes are disgusting🍅🍅🤢

Never mind, don't ball mill ammonium perchlorate. Forgot how bad an idea that is. K nitrate will work much better if milled though.

Video idea: Mostly for visuals, use an old school kitchen scale with an analog interface. You could see the movement in real time. Most have a clock like interface.

Wow, your explanation of how a de Laval nozzle works was simple and effective. The visual aid was very helpful.

Video idea: make a rocket test stand that properly measures the thrust it produces! Beats a kitchen scale and it would be a fun project to watch. Tomatoes are disgusting!

Video Idea: 3D print some rocket powered toy cars and race them against each other (as a way of measuring the thrust of the rockets)

Integza, you could try spiraling the fuel grain instead of having it be a straight bore, that might help it burn less chaotically. I'm wondering if you could 3d print a multi-tool, it would be interesting to see what kind of an edge you could put on a ceramic 3d printed blade.

Cannot believe I'm finding this channel just now, this is by far my favorite engineering channel now.

after you've nitrated the cotton, dissolve it in a solvent and reconstitute it. The surface area will be lower, so the burn rate will be more manageable.

The progress on the rocket engines is increasing exponentially and always entertaining 👏😎 Looking forward to the next one! 😉

for the pulsing rocket I think you were achieving too high of a pressure, thus it spiked, turned into a detonation, pressure dropped and it repeated

You are a very inspiring person. I love how you never fail and only have learning opportunities to do something better which after watching you for some time, you are only getting better and better. Keep up the great work.

Testing until it explodes? - This gets a thumbs up from me!

Video Idea: Try to make APCP as a printable propeller, this would create much much higher thrust. Then insert the printed rocket motor in a 3d printed shuttle model like this you could create a semi accurate test flight of a miniature shuttle.

7:11 "This is a grotesque oversimplification." Thank you for saying this. 😂

your video editing and presentation has become a lot more polished and professional !

5:15 It's my understanding that the gas heats up in the chocking point, it can't gain speed so the energy goes into heating up the gas, when you expand the nozzle the gas is able to expand and the speed increses. ScottManly explains this very well on his Hypersonic wind tunnel video, go check his channel, I think you may like it

Hey Integza, I make rockets every year (Guy Fawkes) in the same way commercial ones are made. The sugar KNO3 works fine (a small addition of sulphur helps) in a card tube. The grain is also the combustion chamber. I use builder's plaster filler to make the nozzle by laying it over a former. A tube shaped whole works well. I use a metal rod as a former. Those oscillations in your burn were caused by two things, 1) the shape could be slightly inconsistent and 2) Up to a certain limit the rate of burn is proportional to the pressure in the chamber. So everything gets exaggerated. The boosters for the shuttle are much the same. They use rubber and aluminium powder as the fuel with perchlorate as the oxidiser. The core is a simple tube. P.S. Have you heard the story about the boosters and the size of a roman horse's butt? let me know...

I love your videos so much and Fantastic work on your projects

Great video again!!! Good job, dude😍😍😍