Post by sundaypilot97 on Jul 11, 2024 14:16:20 GMT -5
Greetings everyone!
After many years, since junior high actually, of thinking about embarking on a project to build my own working turbojet engine, I may finally be able to give it a try.
My early interest were model planes, I was fascinated by jet powered models back in the early 2010s, and there were basically none in my country. And with our buying power, almost impossible to acquire.
Fast forward to today, my hobby is flying sailplanes/motorgliders, so I actually never steered away from aviation related stuff, just decided to put myself into the cockpit
.
Anyway, to the topic. I am mainly interested in building a standard turbojet, using a complete rotor assembly out of a turbocharger. Hence, the radial turbine wheel. I figure, those turbines are probably made out of Inconel, and likely better than anything I could make following Schreckling's and Kamps instructions out of stainless.
Reverse combustor would be imho preferable, as it would allow the use of existing short shaft out of turbocharger unit, and that short of a shaft should allow higher rpm, also the resonant frequency would be lower than that of a longer shaft.
Now onto the fuel. I am really interested in trying to make this run on cooking oil. Properly filtered, of course, preheated if necessary. The engine could be a gas start, i am not shying away from propane. I have experience using cooking oil in furnaces, and always wondered hey why not try to run a turbjne on it, after all, the energy density isnt that far off from diesel, and if preheated a bit, it flows extremely well.
All this means I will probably have to do some engineering myself, but I am still wondering, are there any plans out there, at least for an engine with a reverse combustor and radial turbine wheel?
Old Phoenix comes to mind, but i dont think it uses a reverse combustor.
Tools I have available for the build are: 10x20 toolmakers lathe, diy 1600w spot welder, diy sheet metal roller, pillar drill, fluxcore welder, various hand and measuring tools
I would like to keep any milling to a minimum, if not completely out, hence the Kamps style diffuser, instead of a kj66 radial-axial type, is my preferred.
Lots of talking, so I bolded my main question,so that you dont have to go through a lengthy post.
Talk to you next time,
Adrian
After many years, since junior high actually, of thinking about embarking on a project to build my own working turbojet engine, I may finally be able to give it a try.
My early interest were model planes, I was fascinated by jet powered models back in the early 2010s, and there were basically none in my country. And with our buying power, almost impossible to acquire.
Fast forward to today, my hobby is flying sailplanes/motorgliders, so I actually never steered away from aviation related stuff, just decided to put myself into the cockpit
![:D](http://storage.proboards.com/forum/images/smiley/grin.png)
Anyway, to the topic. I am mainly interested in building a standard turbojet, using a complete rotor assembly out of a turbocharger. Hence, the radial turbine wheel. I figure, those turbines are probably made out of Inconel, and likely better than anything I could make following Schreckling's and Kamps instructions out of stainless.
Reverse combustor would be imho preferable, as it would allow the use of existing short shaft out of turbocharger unit, and that short of a shaft should allow higher rpm, also the resonant frequency would be lower than that of a longer shaft.
Now onto the fuel. I am really interested in trying to make this run on cooking oil. Properly filtered, of course, preheated if necessary. The engine could be a gas start, i am not shying away from propane. I have experience using cooking oil in furnaces, and always wondered hey why not try to run a turbjne on it, after all, the energy density isnt that far off from diesel, and if preheated a bit, it flows extremely well.
All this means I will probably have to do some engineering myself, but I am still wondering, are there any plans out there, at least for an engine with a reverse combustor and radial turbine wheel?
Old Phoenix comes to mind, but i dont think it uses a reverse combustor.
Tools I have available for the build are: 10x20 toolmakers lathe, diy 1600w spot welder, diy sheet metal roller, pillar drill, fluxcore welder, various hand and measuring tools
I would like to keep any milling to a minimum, if not completely out, hence the Kamps style diffuser, instead of a kj66 radial-axial type, is my preferred.
Lots of talking, so I bolded my main question,so that you dont have to go through a lengthy post.
Talk to you next time,
Adrian