Jet Engine Model

This build is about a cutaway model of a 2-spool high bypass turbofan designed by catiav5ftw. It’s part of the hardware kit series of Bambu Labs, where you buy all hardware, like screws and motors, and print all other parts yourself. So, I directly started printing this model. It was easy, but I had no more white PLA and switched to transparent PETG, which I had been sitting on the shelf for some time.

Assembling took some time due to the large number of screws and nuts, but in general, it was not too hard. After finishing the build, I ended up with a nice-looking model with spinning blades to showcase the function of a jet engine. Here are the key stages:

Intake: Air is drawn into the engine through an intake. This air is then compressed to increase pressure before entering the combustion chamber.
Combustion: Fuel is injected into the compressed air and ignited. The resulting combustion generates high-temperature, high-pressure exhaust gas.
Expansion: The hot exhaust gases expand rapidly and flow through a series of turbine blades. This expansion causes the turbine to rotate.
Thrust: As the turbine spins, it drives the compressor at the front of the engine, drawing in more air. The rapidly moving exhaust gases exit the engine at high speed through a nozzle, creating thrust in the opposite direction according to Newton’s third law.