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Old Dec 01, 2009, 06:13 PM
Ken Jack is offline
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Turbine hybrid


Hi Rich,It is an idear i have had for about 7 years when i was informed that brushless motors are akin to alternators and if this is true it would work very well as they become more efficient at high rpm.Then i found out that full size by-pass turbo fan engines are going this way because it is more efficient than present gearbox use.If so then use of this in models looks very good on paper .Thanks for your interest ,Regards,Ken Jack
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Old Dec 02, 2009, 09:18 PM
LuvEvolution7 is offline
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Ken. I see no reason why that wouldn't work and sounds like a perfectly good solution to get better performance. actually, you would get better performance on less power than most modern systems and/or be able to run on significantly less battery than is currently available. hmmmmmmmmm. now I'm thinking too. LOL. could be dangerous.

Rich
Old Dec 02, 2009, 09:28 PM
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actually, a little off topic, but along the same lines........could you not also do this with an EDF combo too?.........have an EDF efflux driving a turbine driven motor/rotor that drives a bigger bypass fan? or would the efflux of the EDF not be powerful enough to make a power gain for the bypass fan? see, I told you thinking would be dangerous. not sure if that would work or not, but at least the idea in my head sounds like it could. LOL.
Old Mar 03, 2013, 09:48 AM
AirplaneFreak100 is offline
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as the name says!
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was this finished?
Old Jan 15, 2014, 08:28 AM
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would an aluminum alloy with better high temperature properties, higher stiffness and a lot lower expansion at temperature help make this engine better. I'm retired aerospace structures guy and now work for company that makes metal composites in precision shapes for specialty applications
Old Jan 16, 2014, 12:06 PM
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Quote:
Originally Posted by F15McAir View Post
would an aluminum alloy with better high temperature properties, higher stiffness and a lot lower expansion at temperature help make this engine better. I'm retired aerospace structures guy and now work for company that makes metal composites in precision shapes for specialty applications
not really.


regular aluminum alloy's are fine on the compressor, and diffuser. But... on the "Hot End"... you are looking at temps at 700 to 800 c. Aluminum, of any regular alloy will melt far below that. Inconel is the lest expensive metal that can still operate in those temps.
Old Jan 26, 2014, 02:36 PM
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excellent job !!!
Old Sep 24, 2015, 04:30 PM
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Taking Jet Engine Fabrication as college project


Hi,
I wonder if anyone is reading my post here. I'm new here. I and my friends have decided to build a gas turbine engine for our college project. This thread has a lot of information in this regard. I'll be posting my progress here. Hoping for your help and expertise.
Old Sep 24, 2015, 05:22 PM
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Bleriot's R Us
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hi post away most who have subscribed to the thread will still be getting notifications so look forward to watching your progress and any will help in anyway we can
Old Sep 26, 2015, 07:58 AM
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Quote:
Originally Posted by Manish9808 View Post
Hi,
I wonder if anyone is reading my post here. I'm new here. I and my friends have decided to build a gas turbine engine for our college project. This thread has a lot of information in this regard. I'll be posting my progress here. Hoping for your help and expertise.
Have a look at the GTBA site www.gtba.co.uk - you can get a CD with lots of usefule stuff if you join the gtba.
Old Sep 12, 2016, 06:54 AM
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I'm not sure if you're still watching this as this is a very old post. But I am currently building a KJ66 and have lots of pics. I am anxious to meet ppl in the US who are building turbines as most ppl who participate in this hobby live in the UK! I belong to GTBA as well.

John
Old Sep 12, 2016, 07:06 AM
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pics kj66


Quote:
Originally Posted by mcjustis View Post
Anybody else out there have a turbine they want to show?? Love to see it...
Martin
Here are a few pics of my KJ66. I'm still working on it. Have not gotten it running yet. The CC looks like it, but that was just me trying to run it on propane. I have taken it apart again to make some adjustments and it will be ready in about a week to try test #2.

John
Old Sep 12, 2016, 08:11 AM
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Bleriot's R Us
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Parts look good, keep posting I am sure there are many who still get the thread notifications.
Old Sep 12, 2016, 08:58 AM
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Thank you xairflyer, I appreciate it. Lots more work to do, these are not easy, been building since last December.

John
Old Sep 12, 2016, 09:21 AM
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How are you balancing ? by hand rocking method ?


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