Colin Heath
Junior Member
Joined: January 2020
Posts: 77
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Post by Colin Heath on Jan 12, 2020 16:11:41 GMT -5
Hi every one, so after a week of waiting for it to stop raining.....😟I got the engine test done, with the afterburn bolted on. The results are mixed.... all good, but some working out to do. Hope you enjoy What a build! Really enjoying the CAD work also as I use fusion 360 for my CNC mill but also quite new to it. Another UK builder here although I'm at the other end just getting started. I do have well set-up fabrication shop and decent machining setup so if you are ever stuck or need something doing at the cost of me picking your brains then feel free to ask. I had to chuckle at who I assume to be your good lady in the background waving encouragement at you  |
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Deleted
Joined: January 1970
Posts: 0
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Post by Deleted on Jan 12, 2020 17:38:30 GMT -5
Hi every one, so after a week of waiting for it to stop raining.....😟I got the engine test done, with the afterburn bolted on. The results are mixed.... all good, but some working out to do. Hope you enjoy What a build! Really enjoying the CAD work also as I use fusion 360 for my CNC mill but also quite new to it. Another UK builder here although I'm at the other end just getting started. I do have well set-up fabrication shop and decent machining setup so if you are ever stuck or need something doing at the cost of me picking your brains then feel free to ask. I had to chuckle at who I assume to be your good lady in the background waving encouragement at you Hi Thanks, if i can help you with any thing, just ask, you can contact me at the facebook page diy gasturbine, or my youtube page Yep... other half is a big help, but she is waving here arm in back ground because the window is worping from the heat :-) Take Care |
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Post by slittlewing on Jan 12, 2020 18:00:58 GMT -5
Looking good mate, don’t know how you resisted lighting up the mofo though!! 😈😈😈
Cheers
Scott
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Deleted
Joined: January 1970
Posts: 0
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Post by Deleted on Sept 2, 2020 14:40:24 GMT -5
Hi guys, been some time since i posted, hope every one is well and able to stay safe, just seen I would of apeared not to have posted last test video of the engine, there has been a few changes... but not for me to mention yet, also just a little video for fun, i do ask one thing please watch till end, youtube numbers and all that , thanks guys Take care every one |
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Deleted
Joined: January 1970
Posts: 0
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Post by Deleted on Sept 10, 2020 14:41:42 GMT -5
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merlin
Junior Member
Joined: November 2020
Posts: 54
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Post by merlin on Nov 9, 2020 13:23:48 GMT -5
How much thrust does it make? (without the after burner)
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Post by racket on Nov 9, 2020 15:23:49 GMT -5
Potential for ~200 lbs
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merlin
Junior Member
Joined: November 2020
Posts: 54
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Post by merlin on Nov 15, 2020 14:47:25 GMT -5
Very nice, can you share the cad file of the combustion chamber and stator vane, please?
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Post by racket on Nov 15, 2020 16:12:43 GMT -5
Every engine will need different combustion chamber and "stator vane" design , so unless you intend copying the engine exactly , they won't be of much value .
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Deleted
Joined: January 1970
Posts: 0
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Post by Deleted on Nov 15, 2020 18:52:11 GMT -5
Very nice, can you share the cad file of the combustion chamber and stator vane, please? Hi, sorry but like john said , each engine, flametube are designed for that engine, and until I, with Johns help, have finished the next stage of work with this engine, not over keen about sharing... but may be if things go well, and you would like to copy this engine, a few kits might be made ? |
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merlin
Junior Member
Joined: November 2020
Posts: 54
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Post by merlin on Nov 15, 2020 21:58:11 GMT -5
Very nice, can you share the cad file of the combustion chamber and stator vane, please? Hi, sorry but like john said , each engine, flametube are designed for that engine, and until I, with Johns help, have finished the next stage of work with this engine, not over keen about sharing... but may be if things go well, and you would like to copy this engine, a few kits might be made ? Not looking to copy the engine, just to get an idea of the combustion chamber and NGV allinement, i'm not familiar with the use of radial turbine, just curious. thanks.
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Post by racket on Nov 15, 2020 22:19:15 GMT -5
Hi Merlin
The radial inflow turbine wheel doesn't change the flametube compared to an axial wheeled engine other than the positioning of the outlet from the flametube , it being displaced to the outer edge for the radial whilst further inwards for the axial.
As for the stator , the NGV vanes will have "similar" throat areas whether radial or axial, though with some necessary vane "shape" differences to account for the different gas approach direction .
Theres enough pics in the Thread to allow you to workout how things go.
Cheers
John
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Post by wannabebuilderuk on Nov 16, 2020 7:45:03 GMT -5
Did andy just delete his account?
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merlin
Junior Member
Joined: November 2020
Posts: 54
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Post by merlin on Nov 16, 2020 12:42:46 GMT -5
Hi Merlin The radial inflow turbine wheel doesn't change the flametube compared to an axial wheeled engine other than the positioning of the outlet from the flametube , it being displaced to the outer edge for the radial whilst further inwards for the axial. As for the stator , the NGV vanes will have "similar" throat areas whether radial or axial, though with some necessary vane "shape" differences to account for the different gas approach direction . Theres enough pics in the Thread to allow you to workout how things go. Cheers John
Thank you, i think i figured it out. it occured to me that his exhaust temperature was low and SFC high, i understand that he doesn't want to push it too much because he made the NGV out of stainless steel. However i noticed that he has the opportunity to make his NGV hallow thus allowing higher temperature flow and a much better overall engine efficiency.
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Post by racket on Nov 16, 2020 15:12:29 GMT -5
Hi Merlin
A couple of corrections , the exhaust temps were in line with the design , not because of the NGV material , it'll easily cope with a temperature that the turbine wheel won't cope with .
As for SFC being "high" , how did you come to that conclusion ??
Cheers
John
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