Search found 55 matches

by fastnova
Sat Feb 14, 2009 10:54 pm
Forum: Gas turbine forum
Topic: Tesla Compressor
Replies: 46
Views: 28250

Re: Tesla Compressor

I have come to the conclusion that hindsight is a wonderful thing! I just finished working out the yield strength of the disks at the (assumed) weakest point, turns out that at around 57,000RPM the centrifugal force will reach about 800Kg and the disks will deform beyond their elastic limit. Call it...
by fastnova
Sat Feb 14, 2009 8:38 pm
Forum: Gas turbine forum
Topic: Tesla Compressor
Replies: 46
Views: 28250

Re: Tesla Compressor

That thought had crossed my mind, then I found this motor. It is from an old industrial hover. I’m not sure what kind of speed it is designed to work at but it must be high as it performed a similar purpose in a past life. To disks are going to be driven via a toothed belt allowing me to gear the RP...
by fastnova
Sat Feb 14, 2009 7:15 pm
Forum: Gas turbine forum
Topic: Tesla Compressor
Replies: 46
Views: 28250

Re: Tesla Compressor

I have a few fail safes in mind, there is going to be a deliberate week point in the drive so should the disks start to rub on the outer casing it will simply break and disconnect the drive instantly, which is a lot quicker the I would be able to react, possibly saving many of the components. I also...
by fastnova
Sat Feb 14, 2009 4:14 pm
Forum: Gas turbine forum
Topic: Tesla Compressor
Replies: 46
Views: 28250

Re: Tesla Compressor

I have to be honest, I am no mathematician, I wouldn’t even know were to start on working out the temperature rise, local speed of sound or much else of it for that matter. Anyone here wana help? I have re-done my calculations on centrifugal force, I have worked it out based on the radius at the wea...
by fastnova
Sat Feb 14, 2009 2:43 pm
Forum: Gas turbine forum
Topic: Tesla Compressor
Replies: 46
Views: 28250

Re: Tesla Compressor

Funnily enough I worked it out just this morning, my calculations show that the centrifugal force will be almost 1ton on EACH disk. I am a little doubtful about these results, so will have to go over the math again. I was expecting it to be high, but not that high! I am working on a spreadsheet to d...
by fastnova
Fri Feb 13, 2009 9:55 pm
Forum: Gas turbine forum
Topic: Tesla Compressor
Replies: 46
Views: 28250

Re: Tesla Compressor

Well now, boundary layers and surface finishes, this is where things can get a little difficult I have been meaning to post some information about this as there is so VERY little info regarding this in relation to tesla turbines available, that I have been able to track down that is anyway. I suppos...
by fastnova
Thu Feb 12, 2009 10:08 pm
Forum: Gas turbine forum
Topic: Tesla Compressor
Replies: 46
Views: 28250

Re: Tesla Compressor

Ok, I think I have made enough progress in the last week to justify an update, so here it is. I finished all the tuning on the first of the casing ends and made a start on the second one. Most of the milling is done on the outer casing, still needs a PCD of tapped holes putting on each end, but that...
by fastnova
Mon Feb 09, 2009 10:46 pm
Forum: Gas turbine forum
Topic: 5 Axis Machining a Turbocharger Wheel.
Replies: 1
Views: 1862

5 Axis Machining a Turbocharger Wheel.

Tell me, who here wouldn’t like one of these in there garage!

http://www.youtube.com/watch?v=EdWWvnrFA9k
by fastnova
Mon Feb 09, 2009 10:03 pm
Forum: Off topic forum
Topic: UK Trip in April
Replies: 10
Views: 3611

Re: UK Trip in April

Heck, I would be interested in meting someone with experience in a field I am endeavouring to learn, well sort of a similar ball park, but hay, you know more than me and that’s a start. What part of the UK are you going to be visiting?

Jonathan
by fastnova
Mon Feb 02, 2009 9:31 pm
Forum: Gas turbine forum
Topic: Tesla Compressor
Replies: 46
Views: 28250

Re: Tesla Compressor

This is the latest edition to my little project for those of you who are interested…
Its not finished yet, but most of the work is done.
by fastnova
Thu Jan 15, 2009 10:42 pm
Forum: Gas turbine forum
Topic: Tesla Compressor
Replies: 46
Views: 28250

Re: Tesla Compressor

Just a quick drawing to show what the finished thing should look like, obviously there are quite a few details missing, like all of the milling on the outer casing, it’s getting late and I cant be bothered, but you get the idea. You might note I am slightly over engineering the housing; this is deli...
by fastnova
Tue Jan 13, 2009 9:23 pm
Forum: Gas turbine forum
Topic: Tesla Compressor
Replies: 46
Views: 28250

Re: Tesla Compressor

Its been a while since I posted any progress on my little project so decided it was about time, its been a bit busy at work trying to catch up with downtime over Christmas but have managed to get a few bits done. The disks are now finished, the hole for the shaft came out a little bigger than I had ...
by fastnova
Thu Dec 18, 2008 10:22 pm
Forum: Gas turbine forum
Topic: turbine blade source
Replies: 22
Views: 7893

Re: turbine blade source

Well the idea is there. If we could all get together and share our combined knowledge and abilities I’m quite sure we could come up with something quite spectacular. It’s just a matter of getting enough people together. Plus the more people that get involved the cheaper the project becomes! Ok, ther...
by fastnova
Tue Dec 16, 2008 9:56 pm
Forum: Gas turbine forum
Topic: turbine blade source
Replies: 22
Views: 7893

Re: turbine blade source

I can’t help with the math much as trig and a bit of transposition and that’s me done. But on the construction/production side of things I’m quite sure I can help. I have quite a range of manual and CNC machines available threw my job. If it can be designed around manual machines then that would be ...
by fastnova
Thu Dec 04, 2008 10:15 pm
Forum: Gas turbine forum
Topic: Tesla Compressor
Replies: 46
Views: 28250

Re: Tesla Compressor

Hummm, could be interesting, would also increase the surface area available, which could be handy. I did find some old chunks of 3” Titanium the other day so if it fails in a shower of shrapnel I do have something a little more exotic available, but for now am going to stick to ally. I am a little w...