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Post by franciumlabs on Aug 2, 2021 22:02:14 GMT -5
Hi, I am new to turbine building and am currently working on building a small jet turbine for a school research project. My chosen compressor wheel was the KP31 (22.1mm inducer, 33mm exducer, 3.2mm tip height). However I am having troubles finding information on how to design a combustor for this small of a turbine. If anyone has any recommendations or patterns for a combustor this small it would be greatly appreciated. Thank you very much.
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Post by racket on Aug 2, 2021 22:28:00 GMT -5
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Post by franciumlabs on Aug 2, 2021 22:48:40 GMT -5
Hi, thank you however I am not building a turbine from a turbo charger but only using the compressor wheel much like a wren 54 or kj66.
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Post by racket on Aug 3, 2021 0:43:04 GMT -5
Hi OK Why not checkout the GTBA www.gtba.co.uk/ they'll have a lot more relevant info than on here . As a rough guide , the flametube cross sectional area needs to 3 inducer areas , and the length/width ratio of the flametube annulus needs to be at least 2:1 Cheers John |
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Post by franciumlabs on Aug 3, 2021 9:12:06 GMT -5
Okay, thank you very much for you your help.
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Post by smithy1 on Aug 10, 2021 22:18:22 GMT -5
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Post by wannabebuilderuk on Aug 11, 2021 7:10:42 GMT -5
Seems they made a prototype called the t10 which was 40mm which you can see below against other sizes imgur.com/TniZlO0"idle at 126000rpm and limited to 245000rpm by the ECU" and they estimated 1.5kg thrust with it. Someone made this though doesn't seem to self sustain youtu.be/CZyNbKB4G28 |
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dieselguy86
Veteran Member
Joined: September 2014
Posts: 186 
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Post by dieselguy86 on Aug 11, 2021 7:39:30 GMT -5
Looks close to an engine I purchased this year. Supposedly 1 of only 3 made, then whoever built it couldn't get the funding to produce them.   |
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Post by wannabebuilderuk on Aug 11, 2021 11:40:28 GMT -5
That reminds me of this homemade engine youtu.be/PFFa4WmaQ54But definitely looks like a prototype kolibri engine |
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