Deleted
Joined: January 1970
Posts: 0
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Post by Deleted on Nov 30, 2017 5:55:58 GMT -5
Hi Guys So A few changes on the design.... can any one spot them, hope you dont mind me posting videos ? instead of pictures just feel it gives a better view. Have spoken to CNC company, they happy to work with me on this, it turns out they would like my help on there web site  so that mite be a bonus Been to pick up my stainless sheets from a friend that had been storing them, i got it out the skip at the laser cutters some time back... aprox 12 inch squares, dont no what grade stainless it is, but each square weighs 3.5kg at 5mm thick... to me it seem dense ? i know when i asked at the laser cutters they said it was high spec, perhaps 4000 or 4130 All The Best Andy |
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CH3NO2
Senior Member
Joined: March 2017
Posts: 455 
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Post by CH3NO2 on Nov 30, 2017 9:31:39 GMT -5
Hi Andy,
It looks like the turning vanes are now one continuous arc rather than a compound curve.
Tony
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Post by jetjeff on Dec 1, 2017 8:26:21 GMT -5
Hi Andy,
Just thinking out loud,,,would there be less of a CNC charge to mill the compressor diffusor without the secondary axial vanes? You could just continue the wedges to the outer case. Also, I've seen wedges that were curved instead of straight, it's supposed to improve efficiency.
But, looks great so far.
Regards
Jeff
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Post by Johansson on Dec 1, 2017 14:38:22 GMT -5
Hi Andy, Just thinking out loud,,,would there be less of a CNC charge to mill the compressor diffusor without the secondary axial vanes? You could just continue the wedges to the outer case. Also, I've seen wedges that were curved instead of straight, it's supposed to improve efficiency. But, looks great so far. Regards Jeff I agree with you Jeff, this radial/axial vanes design has always seemed awkward to me, the one with a continuous vane all the way just feels more right somehow. Much easier to manufacture as well. |
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Deleted
Joined: January 1970
Posts: 0
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Post by Deleted on Dec 2, 2017 9:17:12 GMT -5
Hi Andy, Just thinking out loud,,,would there be less of a CNC charge to mill the compressor diffusor without the secondary axial vanes? You could just continue the wedges to the outer case. Also, I've seen wedges that were curved instead of straight, it's supposed to improve efficiency. But, looks great so far. Regards Jeff I agree with you Jeff, this radial/axial vanes design has always seemed awkward to me, the one with a continuous vane all the way just feels more right somehow. Much easier to manufacture as well. Hi Guys... Valid point, not sure how much benefit the turning vanes are... ? I have been taking my inspiration from other engine designs... A Phil Heward engine i have seen, The Saphir engine i am working on for a friend. ? I guess there are reason why its done, conditioning of the air before it goes in the C/C People better than me have seen to think they are worth the work and effort involved..... The cost is not an issue as much, as it turns out the company doing the work, needs help from me in return, witch will reduce my costs All The Best Andy |
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Post by racket on Jan 16, 2018 22:11:09 GMT -5
Hi Guys Theres been a slight change of plans , the inducer has now grown to 110 mm following some inquiries by Andy to the UK KTS distributor , we've upgraded to the X858 wheel which only became available mid last year and which I wasn't aware of. I ordered a couple of wheels , one for Andy and a spare for me to design up from, they arrived this morning.  As this engine is for thrust usage , a more modest PR will suffice compared to the high PR X846 wheel that Anders is using. The X858 has a larger exducer tip height and is equiped with 45 degree swept back exducer blading , both of which will be just what we want for this design Closeup of inducer  Compared to the X846 wheel on the right  Tip height comparison  LOL..........now I'll have to get the pencil and paper out and start doing some "numbers"  Cheers John |
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Deleted
Joined: January 1970
Posts: 0
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Post by Deleted on Jan 17, 2018 5:50:01 GMT -5
Hi John thank you.... and thank you for your help with the project, I am sure i dont just say this for myself. A lot of us would not of gotten as far as we have without your help.... Thank you Looking forward to drawing up the plans once you have done your magic with the numbers.... As i have mentioned before a company here is helping with the CNC work on the project.... as payment i have done some work for him, Here is part of it, please let me know what you think guys First one Second one Hope to start on new drawings soon, and will up load them as soon as Thank Guys All The Best Andy |
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Post by jetjeff on Jan 17, 2018 7:57:06 GMT -5
Hi Andy,
Looks good,,,+1 on the kudos to John and others for their more than willing knowledge sharing and expertise.
Just noticed no air channels in the back of your diffusor,,,so this will be a bushing engine?
Regards
Jeff
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Chuks
Senior Member
Joined: August 2015
Posts: 498
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Post by Chuks on Jan 17, 2018 19:58:26 GMT -5
Thanks to John am gradually learning how to put numbers together.
Cheers
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Deleted
Joined: January 1970
Posts: 0
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Post by Deleted on Feb 2, 2018 17:03:40 GMT -5
Hi Guys Well things are coming together, it has taken few weeks, but got my head around the CAD and CAM software few pics of new drawings, and video of my first CAM sim     Hoping next week to get some ali on the machine All best Andy |
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Post by racket on Feb 2, 2018 18:42:10 GMT -5
Hi Andy
Nice :-)
Cheers
John
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Deleted
Joined: January 1970
Posts: 0
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Post by Deleted on Apr 4, 2018 9:10:13 GMT -5
Hi Guys.... have a big favour to ask of you all, as some of you may know. I have a youtube channel on which i share videos of mine and other projects in the UK
promote the DIY Gasturbines as much as i can
I do earn a little from the channel.... basically the more views and clicks i get..... etc
Could I ask if you guys could take a moment to look at the videos below, like, share, follow perhaps..... even comment if you feel like
Thanks Andy
Remember every click helps
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Deleted
Joined: January 1970
Posts: 0
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Post by Deleted on Apr 7, 2018 13:48:56 GMT -5
Hi Guys, thanks for the clicks last time, can i ask the same again :-)
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Deleted
Joined: January 1970
Posts: 0
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Post by Deleted on Apr 7, 2018 17:46:20 GMT -5
Hi Guys... could you please just let me know what you think of the videos, either on here or even youtube.... if any of you want any videos ever editing up if you can get the to me etc, i happy to help same with any drawing in cad, its all practice for me, and happy to help people in the group out
All The Best
Andy
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Deleted
Joined: January 1970
Posts: 0
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Post by Deleted on Apr 29, 2018 4:30:38 GMT -5
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