How I Built a Rocket Motor That Actually Works! (Test Results)

[@AeroPropulsions]

If you have any feedback, please comment below!

[@陳謹揚-q7e]

Good hope someday we will find the total impulse of the SN3 and even the more powerful version

[@lawrenceweaver1906]

Really glad to see the that the black powder paint worked well for the startup issues you were having with the surfactant in the mix.

[@rafaelguida2317]

Great video as always! Look forward to see SN4!

[@AeroPropulsions]

Thank you!

[@maggieMakesMechs]

Great work man! No notes

[@sebastianarbelaez6787]

Outstanding work and excellent documentation. Hats off to you. I’m working on a similar project and watching your videos has saved me a lot of time and provided inspiration. I do have some suggestions if you wish to hear them.

[@AeroPropulsions]

Thank you so much! Good look with your project, would love to see it!

[@Astranamic]

GF: "He's probably out cheating with other girls" My dumbass: *testing literal rockets*

[@daytonpyro]

what propellent do you use?

[@AeroPropulsions]

@@daytonpyro I use a modified version of rocket candy!

[@qubalabHD]

How did you plan to make the nozzle (whole chamber) design. I wonder if you've used some already existing docs, or you've invented some way do calculate predicted function of pressure to time for set parameters. (how did you make the optimization equation for the chamber). It is really hard for me to find any viable resources that cover everything from the beginning, that cover the behavior of non-perfect mixture of gases.

[@tejasbirute4838]

How you measureing the thrust with?

[@AeroPropulsions]

I am using a load-cell on my test stand.

[@tejasbirute4838]

@@AeroPropulsions 👍 and data storing with serial or sd card or other way..

[@stalcpvp]

What cad software do you use? and how did you get land to make a static fire site

[@AeroPropulsions]

@@stalcpvp I learned Solidworks in school but now use Onshape because it’s free! The static fire site is in the woods behind my house.

[@stalcpvp]

@@AeroPropulsions Oooh, I use onshape. Im near the woods but its all fenced off unfortunately. Good luck on future launches/tests

[@AeroPropulsions]

@ Thank you!

[@callum22]

You should make your nozzles from graphite, which will reduce mass and erosion, and also switch to a snap ring design, then there's no external bolt heads to contend with when mounting in a rocket, unless you don't intend on flying it. But nice work though😊

[@RCreview-USA]

Love the video. Waiting for SN 4 👍 👍 motor. Are you going to add second O-ring to the nozzle?

[@AeroPropulsions]

Thank you so much! Currently working on the design to seal the nozzle. Two O-rings are definitely not out of the picture but I would rather not.

[@winstonsmith478]

What lathe are you machining the nozzles on?

[@AeroPropulsions]

Unfortunately I do not have a lathe. I am outsourcing these parts. Working on getting one though!

[@cannonroberts5129]

After you finish refining the nozzles will you be switching to Inconel?

[@elburropeligroso4689]

Might be a bit expensive for the hobbyist.

[@AeroPropulsions]

Spot on.

[@alexanderpatrus9588]

Just want to point out that the orings above the bolt holes arent doing anything here (if gas makes it past the first oring, itll leak out the bolt holes instead).

[@AeroPropulsions]

Yes you are correct! I used the second O-ring for alignment. Not needed in the future.

[@senpai9]

need bought nozzle from high percision machine. why not go path liquid fuel propalent

[@AeroPropulsions]

That’s the future!

[@unitazer]

Unemployed friend on fridays: