Just a suggestion
 

rpetersson
You are interested in creating a jet engine without stators ( to simplify the project) and thereby use your CNC skills.
Let me suggest a slightly different project if I may.

There are a number of different used/surplus free turbine helicopter engines on the market that have the potential of being converted to jet engines.
If you merely remove the free turbine, you end up with tremendous vorticity out the exhaust since the turbine nozzle for the free turbine is usually part of the prior turbine stage.

What these free turbines need is a properly designed nozzle that redirects the flow axially or redesign of the final turbine stage to create axial flow.

The question then becomes would the project be too big for your equipment.
Just a thought.

Thanks
 

So many good suggestions - I just want to thank everyone for taking an intrest in my project.

Machinbird: That would indeed be a intresting project - maybe something i will look into after i create my miniture engine!

At this point I have come to the conclusion i will try to build a centrifugal engine to start the project. When i get that engine going i will move on with the axial-flow engine.

Impeller will be taken from a turbo-charger and i will machine the housing on the CNC machine.

Sounds like a good idea to me - please keep us informed as to progress.

I have no idea if the following as ever been tried:-

Drive alternate fan stages by shaft and by edge/rim driven discs. Definitely doable, but a bit bulky.

Yes, alternate hub-driving & case-driving LP turbines on the GE UDF demonstrator engines of the 1980's. These were directly coupled to contra-rotating open fan blades.

No reason in theory why it shouldn't work in the compressor, although the cure seems worse than the disease.

Hi,

You might like to look up Ian Bennett, who probably has the largest collection of
turbine engines in the uk and has built engines from old turbochargers. There are
others in the uk who resore and run old engines at airshows. My restored Rover
apu from a Vulcan is now at the Gatwick Air Museum, though no idea if it's still
running.

Gas Turbine and Jet Engines

Let us know how many disk and blade failures you get from cocincident vibratory modes when you try this.

You will never get to takeoff power before it blows up.

lompaseo.

I don't think that he''s looking for takeoff power.

Although he might get it if standing in the wrong place!

Interesting project though.

If he doesn't blow up one or two and start from scratch all over again then he isn't trying hard enough. :E