This monster made my homemade jet engine 2.5x more powerful.

Today we're building the new centrifugal Supercharger that I designed for my homemade electric jet engine. The compressor worked really well and I hope you guys enjoyed the build!

My Parts List:

#homemade #jetengine #3dprinting

[devilsoffspring]

This is called a "motorjet" and I built one as a teenager about 30 years ago, I used it to successfully fly an RC airplane.
Good for you for doing it, but in order for it to work the compressor must be able to develop an appreciable pressure ratio. Your compressor is of the style used in car turbochargers and must run MUCH faster than a 3D printed one can withstand.
I made my compressor wheel out of model aircraft plywood and machined grooves in the outside diameter, then wrapped it with carbon fiber to keep it from blowing up at high RPM. I used a brushless DC motor to drive it directly at roughly 50, 000 RPM and it produced around 3 PSI pressure IIRC, which was just barely enough for the engine to produce roughly 1 pound of thrust and fly the ~3 lb. RC plane.
Fuel consumption was incredibly high, about 1 liter of fuel (diesel fuel/kerosene and gasoline mixed) for one minute of flight. It did work, though.
So yes, this CAN work! But, your compressor must be able to develop a few PSI of pressure otherwise you won't have a jet engine--just a blowtorch. About 5 PSI pressure is a good number to work with, restrict the outlet of the compressor by covering it with your hand and see if you can get it to produce a few PSI without blocking all the airflow.

[John-jjjc]

This is great! You probably already know this but if not, you should consider getting a very high KV brushless motor and driving the comrpessor directly instead of using pulleys and those DC motors. They are much more powerful and efficient, especially at really high RPMS, which are needed for this compressor.

[dinissantiago]

Nothing like the feeling of finding a cool new youtube channel

[tireballastserviceofflorid]

As a young man back in the late 80s my buddy and I were always playing with a go-cart or mini bike or whatever. We decided we needed a supercharged go-cart. My buddy made one to fit a 5hp Briggs. Didn't work well. So I took it and made some big changes and it worked. The impeller was a washing machine water pump. Turned it into a manageable shape for the 9in south bend lath were were using. Had a 9-1 over drive with a v belt. Had studs in the engine. Shaves head. Massive ports. I ran it on 25% nitro rc helicopter fuel. It was a screaming beast. Absolutely dangerous as could be. Now with 3d printing. Hard to believe what is possible. We joked about making something from nothing. Never dreamed of stuff like this back then.

[gamingboi_]

Turbocharged jet engine! Integza would be proud!

[marcysundew]

wow randomly found this video, nice bro

[Smokkedandslammed]

~Major Aerospace manufacturers hate this one WEIRD trick to add %30 more to your turbine engine!~

[Andrei-ptvo]

Channel seems underrated; hope it takes off 🤙

[ruination]

This quality of video vs subscriber count is grossly underrated. I thought i stumbled on a 500k+ channel lol

[theeddytor]

i am dumb i thought that's 902K subs how the heck you are so underrated man so much work and efforts. 9.02k?
SUBBED

[Nikoxion]

I have no idea how I ended up on this video, but this is an awesome project! Super interesting!

[alexsv]

Maybe you could add another compression stage? The pressure seems quite low, as even the first jet engines had around a ratio of 2. Either axial (to act as a axial inducer and stabilize the flow before entering the centrifugal stage) or centrifugal, and perhaps a thrust augmentation nozzle like those tested by NACA? Though it is probably the jet engine itself that is the weak link, but given that you are working on a follow-up it probably doesn't matter. You should perhaps look at the Jumo 004B's combustion chamber for some inspiration, those reached 95% efficiency and compared to more modern ones, are easier to find and get your hands on.

[meanman]

Actual turbos spin around 130, 000-150, 000+ rpm so yeah…. Gonna need a lot more electric motor to run that thing… I am impressed you got a PLA compressor wheel to 30, 000rpm though.

[nathanielmiskell]

Great video!
I would be interested in the files for the turbo if they are available.

[WolfmanDude]

Thumbs up for you having a lathe! All of the hip 3D printing people I know dont have one. They think its some obsolete grandpa tool. They then proceed to show up every week to use my lathe :D

[AlJay]

Nice, maybe a two stage compressor to get even more airflow and higher pressure? Maybe two first stage inputs feeding into one secondary stage?

[PixilFox]

This is so cool but im pretty sure with a propeller and those two dc motors you could generate even more thrust

[sickmusicamoguswhetfartonm]

nice video dude, your different to other engineering creators but in a good way, your stuff looks professional clean and well done. i will recommend your channel to my friends that like this stuff

[tomvandenbroecke]

lovely to see how you will blow up for sure keep up the good work

[illusion]

I demand the next video NOW great stuff