High Bypass Jet Engine Fan

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High Bypass Jet Engine Fan

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Print Profile(1)

All
X1 Carbon
P1S
P1P
X1
X1E
A1

0.2mm layer, 2 walls, 15% infill
0.2mm layer, 2 walls, 15% infill
77.8 h
5 plates
4.5(8)

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Description

A high bypass fan inspired by Rolls-Royce's Trent series turbofans. The fan blades print separately from the disk and are designed to slide in, just like a real fan. The blades can stand up on their own, and the whole fan can also balance on the blade tips as shown in the first picture. This was a totally unintentional bonus feature and would've been difficult to design for. The white spiral stripe is printed flat and glued onto the black spinner cone. If the stripe is too rigid, I recommend printing it with fewer layers (so it's thinner), or softening it with a heat gun or hot water, or printing it with flexible filament.

 

The clearances and gaps between the parts are as optimized as I could get them, so that parts aren't too tight or too loose. Of course, results will vary depending on your printer and print settings. I uploaded 2 extra versions of the fan blades with more clearance.

 

Be careful about where the slicer assigns the layers start seam, especially for the fan blades - I recommend placing the seam at the fan blades' trailing edge. 19 fan blades and 19 annulus fillers need to be printed.

 

For source files, I uploaded this to GrabCad as well: https://grabcad.com/library/3d-printable-high-bypass-fan-1

 

Designed using pictures. Blueprints and drawings from engine manufacturers are never publicly available for obvious reasons.

Comment & Rating (16)

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Great build! I scaled it up 150% for an 18” diameter fan and designed my own wall mount with a bearing so it can spin. since the back is not visible I hid the seams on the back of the fan blades. Printed in: Hatcbox PLA in True Silver eSun PLA+ in Cold White Duramic PLA+ in Back
The designer has replied
4
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Absolutely stunning! Great job!
0
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Any chance you'd be willing to share your wall mount and bearing ideas? I'm trying to design it, and possibly incorporate a small DC motor, but didn't want to reinvent the wheel entirely.
0
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Print Profile
0.2mm layer, 2 walls, 15% infill
I had a little trouble with sizing on blades but not a big deal. great fun to print and assemble.
(Edited)
2
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Print Profile
0.2mm layer, 2 walls, 15% infill
Turned out great. Just be very careful removing supports around the very thin parts. Be prepared to reprint a few. I had to tap the rotors into the dovetail joints with a small hammer, which broke two of the rotors at the base. A 3D pen came in really handy to repair the breaks due to the very thin blades. Glue just doesn't do it but there's plenty of room below the covers to add some melted filament which works great to hold it together. I also didn't like how the spiral turned out for me so I remixed the model to have just a plane truncated cone.
1
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Print Profile
0.2mm layer, 2 walls, 15% infill
(Edited)
1
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Great model idea and amazing work. So thankful you allow projects like these to be printed by anyone!
The designer has replied
1
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I appreciate the feedback!
1
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stunning model
1
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love this variation, is there any way we can get these blades with the leading edge color different?
0
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I modified the single blade raw file to so it can be printed multi-color- just like your other model - https://makerworld.com/en/models/158422#profileId-173889 I can upload the data if the author of this model approves. cheers
0
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Print Profile
0.2mm layer, 2 walls, 15% infill
this print fit perfect with the original assembly
(Edited)
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Print Profile
0.2mm layer, 2 walls, 15% infill
some issues with the fan print
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Print Profile
0.2mm layer, 2 walls, 15% infill
0
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