think
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Joined: April 2020
Posts: 6
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Post by think on Apr 17, 2020 23:30:30 GMT -5
Is an Axial-Flow model jet engine (for RC planes) possible? Is it hard to make?
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Post by racket on Apr 18, 2020 0:59:21 GMT -5
If it uses a turbocharger compressor wheel and "off the shelf" axial turbine wheel and NGV , its not a huge job , but still not "easy" . A few more specifics on what you intend to build would make it easier to give you a more indepth answer. This Site www.gtba.co.uk/ is more appropriate for RC plane engine builds Cheers John
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Post by jetjeff on Apr 18, 2020 9:10:58 GMT -5
Hello,
When you say Axial-Flow, are you referring to the compressor or turbine? Most R/C turbines use turbocharger wheels for the compressor and an axial turbine wheel, although some folks have used radial turbines for the hot end.
Yes, it is difficult to make without knowing your machining ability and machines you have access to. Although there aren't a lot of parts to a R/C turbine, they have to be made very accurately.
Regards
Jeff
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think
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Joined: April 2020
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Post by think on Apr 18, 2020 17:11:20 GMT -5
Hello, When you say Axial-Flow, are you referring to the compressor or turbine? Most R/C turbines use turbocharger wheels for the compressor and an axial turbine wheel, although some folks have used radial turbines for the hot end. Yes, it is difficult to make without knowing your machining ability and machines you have access to. Although there aren't a lot of parts to a R/C turbine, they have to be made very accurately. Regards Jeff I'm referring to the compressor, I want to build one but I don't know if it's too complicated for me
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think
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Joined: April 2020
Posts: 6
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Post by think on Apr 18, 2020 17:15:09 GMT -5
If it uses a turbocharger compressor wheel and "off the shelf" axial turbine wheel and NGV , its not a huge job , but still not "easy" . A few more specifics on what you intend to build would make it easier to give you a more indepth answer. This Site www.gtba.co.uk/ is more appropriate for RC plane engine builds Cheers John I want to build a RC Jet engine with an Axial Flow compressor. I know that it's not easy but I'm ready to try.
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Post by racket on Apr 18, 2020 18:00:59 GMT -5
DO NOT ATTEMPT TO BUILD AN AXIAL COMPRESSOR AT MICRO TURBINE SCALE .............YOU WILL FAIL !! You'll notice on the Link I provided www.gtba.co.uk/ that there are some axial compressored engines , but they were made by very experienced constructors with huge amounts of work involved, so unless you are a very experienced machinist capable of making the large number of small components to very exacting specifications , and have the necessary theoretical skills to calculate those exacting specs , take my advice and don't attempt it . Try building an engine with a radial comp wheel of your own design and manufacture , then multiply that effort by 10 times and thats what you'll be faced with for an axial build Cheers John
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think
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Joined: April 2020
Posts: 6
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Post by think on Apr 18, 2020 20:16:45 GMT -5
DO NOT ATTEMPT TO BUILD AN AXIAL COMPRESSOR AT MICRO TURBINE SCALE .............YOU WILL FAIL !! You'll notice on the Link I provided www.gtba.co.uk/ that there are some axial compressored engines , but they were made by very experienced constructors with huge amounts of work involved, so unless you are a very experienced machinist capable of making the large number of small components to very exacting specifications , and have the necessary theoretical skills to calculate those exacting specs , take my advice and don't attempt it . Try building an engine with a radial comp wheel of your own design and manufacture , then multiply that effort by 10 times and thats what you'll be faced with for an axial build Cheers John I don't really care if I fail... At least I would've tried so... Do you have any good info that can help me?
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Post by racket on Apr 18, 2020 21:28:06 GMT -5
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miuge
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Joined: March 2014
Posts: 199
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Post by miuge on Apr 19, 2020 6:44:25 GMT -5
I guess many people are mislead by these YouTube videos of an axial DIY turbines. Some people consider it "working" if it spins by it's own power and well that's pretty much it. You can make a "turbine" like that bending some metal plates, stacking it up and put it in a can. YouTube will provide you all information to make such thing.
If you're about to build a real working turbine that would actually self sustain and produce thrust, take notes what John has pointed out, there's no easy way to do it.
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think
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Joined: April 2020
Posts: 6
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Post by think on Apr 19, 2020 16:25:25 GMT -5
I guess many people are mislead by these YouTube videos of an axial DIY turbines. Some people consider it "working" if it spins by it's own power and well that's pretty much it. You can make a "turbine" like that bending some metal plates, stacking it up and put it in a can. YouTube will provide you all information to make such thing. If you're about to build a real working turbine that would actually self sustain and produce thrust, take notes what John has pointed out, there's no easy way to do it. I know don't worry.
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