www.pulse-jets.com

That looks like a pretty well made motor.

Some more machinery followed me home. A little Lorch lathe missing a fair amount of parts, because obviously I needed another project.

Thanks, Mike. I was about to send you an email :)

Wow, that's super low profile. Shame I can't afford to upgrade :)

Tape scales - magnetic? I could live with some of that, mine are cheapo 5µm glass scales. The scale isn't really the issue, I can live with 0.01 repeatability (well within the bounds of it being measured in chicrons) but the scales themselves aren't exactly "low profile"

OK, brace yourself. It's as ugly as sin, and has a number of flaws.

Mounting plate was hacked from a piece of old compressor I had lying about, it's welded to a piece of scrounged cast iron water conduit, 145mm diameter. Welded inside those are the hub parts of 2 Fiat Panda brake disks turned to ...

Mill is now up and running properly, finished making my vertical head this week.

Interesting. Haven't looked into it too deeply, though.

To get a start on validation of the model, there's a certain amount of literature regarding specific designs, particularly the various SNECMA engines and the stuff out of JPL.

Nice. Good to see you're still at it.

Bloody hell. That's outrageous.

No, but not everyone is interested in turbojets, and a lot of people only really check in once or twice a month.

What really matters is thrust specific fuel consumption. But in any case, there's no one answer. A pulse jet we might build at home will probably do worse than a turbojet we might build at home.

Dunno, man. Probably.

https://www.mas.bg.ac.rs/_media/istrazi ... _29-34.pdf and https://www.ijser.org/paper/Design-of-T ... amber.html
came up on a quick google search for "combustion chamber dimensions for model jet engines"

Nice idea, but I'm not sure many people check in here much any more. Personally, turbines aren't my thing, I'm interested in pulsejets :)

As far as costs go, you probably want the Schreckling book (I guess it's still relevant), and you'll need to source the various parts plus the machinery to make ...

Hi. The forum is extremely quiet these days, not sure there are many turbine people about here any more.

As for your question, it seems very light on details to have any sort of answer. You might want to look at the excellent video here : https://www.youtube.com/watch?v=aNyYxVHBSWQ