Jet engine 1st shaft tunnel

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This is the shaft+compressor+shaft tunnel assembly of the R-15A microjet. The bearings are partial inserted on the shaft not to damage it with repeated forcing of the bearings until the final assembly is made and later on bearing change. Compressor: aluminum
Shaft: 316 steel
Shaft tunnel: 316 steel
Front and rear bearings spring loaded.

Category:

Science & Technology

Tags:

• microjet
• engine
• shaft
• tunnel
• compressor
• impeller
• mechanics

[AdiGeorgescu22]

Si cum ai facut prinderea pentru prelungirea axului? filetat? ai reusit sa-l faci centrat? si-apoi filetul ar trebui sa fie pe stanga, nu?

[thewebmaster93]

@AdiGeorgescu22 da, axul turbinei se fileteaza in extensie, cele 2 filete sunt ambele pe stanga.

[AdiGeorgescu22]

I can't seem to figure out the main idea... you used the original shaft from a turbocharger ('cause the turbine wheel is friction-welded on it) and you built the rest (combustion chamber etc) around it to make the jet engine?

[thewebmaster93]

@AdiGeorgescu22 e o varianta mai veche, in designul pe care il am acum am axul de la turbina scurtat si modificat care intra intr-o extensie de inox ce sustine compresorul.

[thewebmaster93]

@AdiGeorgescu22 Da. motorul e proiectat incepand cu alegerea (estimativa) compresorului si turbinei, apoi in functie de dimensiunile si suprafetele lor se proiecteaza statorul, camera de ardere NGV-ul galeria etc.

[Daistaar]

Hey Web, that's beyond sick! i can imagine the care you take in your measurments and precision. Definitely shows the painstaking detail man. Definitely shows! What do you plan to put the engine in?

[thewebmaster93]

the shaft and shaft tunnel are not GOOD for my engine :( but I will use them for educational models, soon a much stronger shaft will be made and better shaft tunnel + the diffuser in 2 weeks. Jet designing is very very very very very very very hard!!! Your working with 0,02 mm a a lot of the time and you have to take into account many things like shaft dilatation and axial play. The engine will be used for ultralight or bike.

[27mlc]

the compressor from a turbocharger?

[AdiGeorgescu22]

@thewebmaster93 Mersi mult de raspunsuri. Nu ma asteptam la raspunsuri in romana. :))

[FlyHighRC386]

what material are the bearings made of

[19wael96]

you will have to understand aerodinamics and design first and then make it axial flow thats why these model jet engines cost alot of money there if you wish see my jet videos enjoy!

[cuyperscharles]

wow thats cool