I've modified the 3D Printable Jet Engine made by CATIAV5FTW in order to rotate automatically using a 12V DC Motor and a Controller.

Besides the modified parts from the original one, there is a new part called "Connector" wich is practically an adaptor between the DC motor shaft and the main shaft of the JET ENGINE. If you're using other type of DC Motor, that part may not be compatible with your motor but can be easily modified for your needs.

The files that you won't have to print from the original files are next and are replaced by the files uploaded by me:
Nozzle_Cone.stl --> Nozzle_End.STL
Nozzle.stl --> nozzle_body.STL
Low_Pressure_Shaft_Aft_Rev_A.stl --> Low_Pressure_Spool_Aft.STL

What you Need:

• 12V DC motor : https://www.aliexpress.com/item/free-shipping-NEW-1PCS-25GA-25MM-12V-DC-motor-1PCS-DC-12v-24v-25MM-motor-bracket/32321242060.html?spm=a2g0s.9042311.0.0.27424c4dCFZV2N (the motor can have other dimensions, but somewhere in this range because the motor mount on the nozzle is made to be compatible with other dimensions)

• DC Motor Speed Controller: https://www.aliexpress.com/item/12V-24V-30V-120W-PWM-Adjustable-Volt-DC-Motor-Speed-Controller-CCM2/32798759346.html?spm=a2g0s.9042311.0.0.27424c4dCFZV2N (This DC Motor Controller Works like a charm and it's easy to understand)

• DC Motor Controller BOX : https://www.thingiverse.com/thing:3347516 (this is my design, an easy one made on the go)

• 2 M3x6 screws to mount the DC Motor

• 9 M3x6 or x10 (it doesn't matter for the Controller BOX)

• 1 Meter of wires to make the connections (black and red wires)

• 12V Power Supply. I recomment this one because you have included the Female connector to plug the wires and making easy to disconnect everything from the power source: https://www.aliexpress.com/item/1PCS-24W-EU-US-Plug-Driver-Adapter-AC110V-220V-to-DC-12V-2A-5-5-2/32812473368.html?spm=a2g0s.9042311.0.0.27424c4dJAaeaj

Happy Printing! I would love to know if anyone tries my remix!