DIY Jet engine [WIP]

Building a jet engine that can sustain combustion has been a dream of mine for a long time and these are the first steps.

The above render is the first mock-up and has many issues. Firstly the volume of air should diminish as it traverses the impellor yet in this design the cross-section increases as it leaves the impellor. The aft section should also be accelerating the airflow whereas in this example it simply impedes it.

The most difficult aspect of this project is creating an adequate impellor geometry without any appropriate experience. So for the next version the impellor was completely remodelled.

The new geometry features a much more aggressive angle of attack and appropriately adds a shorter layer to the base of the impellor. The volume of air at any given point of it's path is shrunk according the angle of attack of the blades at that point. The resulting is smoother and much more compressed air at the output.