3D Printable Jet Engine - V2 Turbofan Driver at 900 RPM
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- Опубліковано 18 жов 2024
- ** V3 released! Check the Thingiverse page and my UA-cam channel for new content! **
An operational video of the upgraded 3D Printable Jet Engine - V2 Turbofan Driver project on Thingiverse. This video shows the main fan running at speeds up to 920 RPM, less than half the limit!
Project information and directory can be found on Thingiverse:
www.thingivers...
Follow my UA-cam channel for more related videos and follow the Thingiverse and GitHub page for project updates!
how to make it work like that?? its amazing!! can i know what wirings, motors. Etc. did u use
Thanks! All the details how to make it with instructions, videos, and parts list are found on the main Thingiverse page: www.thingiverse.com/thing:4743929
@@adambjohnson thank you!
That's really cool!
could you show us how much force of wind it produces with a piece of paper or wind measuring tool?
I’ll add something on the next video to show the air being pushed!
How do we get this on the fan showdown
Hello sir, I have some alignment issues, probably because it is 3D printed. Is there a method i can apply to having the 2 shafts aligning properly on the 4 main bearings???
Hey there - yes this is also a problem for me. The shaft line needs a redesign and i haven't had the time to do this. I think having a bolt connect the shafts would be smarter than what I did.
Open to any help :)
@@adambjohnson Yes sir, i 3D printed both shafts with a 10x1.5 mm inside right hand thread
and used a 40mm (10 x 1.5 mm ) set screw to connect the two shafts. I am close to where i need to be but not quite there yet. I was also thinking of doing the same and have the two shafts machined out of aluminum.... LOL, maybe we can figure this out in time!!!
@@garylefebvre5407 Set screws push on the shaft and might be causing more misalignment than alignment - I was thinking a tapered end or something for each shaft with the axial fasteners could help keep things aligned. A solid shaft was always too long for a conventional printer. Main problem is the stackup of tolerances, not the materials, so you'll just put the problem somewhere else if you do all aluminum :)
@@adambjohnson Ok, I will look into axial fasteners!!!
@@garylefebvre5407 axial in the sense that the fastener gets inserted and threaded along the same axis that the shaft rotates on.
I used to have an M5 joining the two shafts in the middle, but I think I need an aligning/mating feature like a cone that forces the shafts to only align in one way. I think the aft shaft also needs a locating feature printed into the final blade stage to ensure alignment between those bodies. Since the herringbone gear set are on that stage, that should fix the majority of the alignment issues.
I think I should do a revision of the shaftline at some point...
may be it looks I could be wrong, but it seems to me that the fundamental structure of the engine is shown incorrectly.
Why are all compressors on the same shaft?
If look at the blueprints of jet engines, might be noticed that the turbine blades and the compressor blades are on the same axis but on different shafts and rotate in opposite directions to create the necessary pressure inside.
Like this ua-cam.com/video/AfvY2CTTjUE/v-deo.htmlsi=BnC9vDj8pP0TRmIm
The link you provided is for the exact same design where the compressor blades at the fore section of the engine are not on the same shaft, but on bearings that allow both sections to rotate freely. I’ve only designed in the electronics to support a motor, screen, and the ability to adjust speed. Adding a different speed stage would require a lot more thought and/or another motor.
Furthermore, I think there may be a couple different designs for a turbofan. My understanding is that they rotate in the same direction at a faster rate. I have only taken a few classes that discuss turbojets and turbofan but am certainly no expert. Wikipedia has a nice gif illustration en.m.wikipedia.org/wiki/Turbofan
but i also found a GIF of a counter-rotating compressor blade on a different design here (not a bypass engine though) www.hpcwire.com/2020/07/14/joliot-curie-supercomputer-used-to-build-first-full-high-fidelity-aircraft-engine-simulation/#foobox-1/0/aircraft-engine-gif.gif
looks like there could be a number of ways to do it. Learn something every day!
Check out my assembly videos to see how it goes together - you can see how the compressor blades are on their own shaft with bearings on the main shaft