Do you realy need stators?
Joined: Jul 2009
Aviation Qualifications: ATP+Mil
Posts: 1,597
Likes: 192
From: Not far from a big Lake
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.
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.
Thread Starter
Joined: Mar 2011
Posts: 43
Likes: 0
From: Norway
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.
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.
Last edited by rpetersson; 12th February 2013 at 09:43.
Joined: Feb 2005
Posts: 4,581
Likes: 0
From: flyover country USA
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.
No reason in theory why it shouldn't work in the compressor, although the cure seems worse than the disease.
Joined: Jun 2009
Posts: 335
Likes: 57
From: Oxford, England
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
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
Last edited by syseng68k; 12th February 2013 at 15:50.
