Turboshaft book by Shreckling
Moderator: Mike Everman
-
Bruno Ogorelec
- Posts: 3542
- Joined: Sat Oct 04, 2003 7:31 am
- Antipspambot question: 0
- Location: Zagreb, Croatia
Turboshaft book by Shreckling
I've heard that Shreckling has now published a book on building turboshaft/turboprop engines. Has anyone seen it? What it's like?
-
Bounce
- Posts: 39
- Joined: Tue Oct 10, 2006 7:31 pm
- Antipspambot question: 0
- Location: Southern Germany
- Contact:
Schreckling book
Hi Bruno,
It has been published some time ago and is quite like his book about normal engines (the one with plans for the KJ66 and TK50 in it). It also has kind of the same beginning (same maths ;) ) and then turns on to two shaft turbines with diagrams of prop size, best freepower rpm and so on. He then describes his way to a two shaft turboprop on the basis of the TK50 with two shafts running in each other beginning with a design where the second turbine is in the intake stream of the compressor and another one where the freepower wheel is in the exhaust stream. Also comes with a plan and partlist for the first one. But the inner shaft is very thin and also the hole in the compressor needs to be drilled wider, will need some quite precise machines to build this thing.
Greetings hoping to have helped, Dennis
PS: I can post/send you some plans/designs/diagrams out of the book if wanted (in German)
It has been published some time ago and is quite like his book about normal engines (the one with plans for the KJ66 and TK50 in it). It also has kind of the same beginning (same maths ;) ) and then turns on to two shaft turbines with diagrams of prop size, best freepower rpm and so on. He then describes his way to a two shaft turboprop on the basis of the TK50 with two shafts running in each other beginning with a design where the second turbine is in the intake stream of the compressor and another one where the freepower wheel is in the exhaust stream. Also comes with a plan and partlist for the first one. But the inner shaft is very thin and also the hole in the compressor needs to be drilled wider, will need some quite precise machines to build this thing.
Greetings hoping to have helped, Dennis
PS: I can post/send you some plans/designs/diagrams out of the book if wanted (in German)
-
Bruno Ogorelec
- Posts: 3542
- Joined: Sat Oct 04, 2003 7:31 am
- Antipspambot question: 0
- Location: Zagreb, Croatia
Re: Schreckling book
Dennis,Bounce wrote:Hi Bruno,
It has been published some time ago and is quite like his book about normal engines (the one with plans for the KJ66 and TK50 in it). It also has kind of the same beginning (same maths ;) ) and then turns on to two shaft turbines with diagrams of prop size, best freepower rpm and so on. He then describes his way to a two shaft turboprop on the basis of the TK50 with two shafts running in each other beginning with a design where the second turbine is in the intake stream of the compressor and another one where the freepower wheel is in the exhaust stream. Also comes with a plan and partlist for the first one. But the inner shaft is very thin and also the hole in the compressor needs to be drilled wider, will need some quite precise machines to build this thing.
Greetings hoping to have helped, Dennis
PS: I can post/send you some plans/designs/diagrams out of the book if wanted (in German)
Thank you very much! Yes, diagrams would be great! I don't mind German; it's a fine and poetic language, no matter what the Brits and the Americans may think. :D
-
Bruno Ogorelec
- Posts: 3542
- Joined: Sat Oct 04, 2003 7:31 am
- Antipspambot question: 0
- Location: Zagreb, Croatia
-
Bruno Ogorelec
- Posts: 3542
- Joined: Sat Oct 04, 2003 7:31 am
- Antipspambot question: 0
- Location: Zagreb, Croatia
Re: pics
Dennis,Bounce wrote:Hehe...
There you go, already translated them for easier use
Am I right in concluding that the second image from top shows an intake free power turbine -- one powered by the fresh air intake?
An interesting approach. One could use a plastic turbine wheel -- polycarbonate or acryllic or some such. Maybe even wood.
F.H. Reynst had the idea of using the air intake for his valveless combustor to drive a fresh air turbine.
-
Bounce
- Posts: 39
- Joined: Tue Oct 10, 2006 7:31 pm
- Antipspambot question: 0
- Location: Southern Germany
- Contact:
intake turbine
Hi Bruno
Yep, it's a freepower in the intake duct. Schreckling made it of plywood which makes it easier to build, but power output is lower than from a turbine on the hot side. Also it needs post guiding vanes to reduce turbulences in the air going into the compressor.
So long, Dennis
PS: maybe I'm going to post some additional info Schreckling wrote about it when I'm back home from school
Yep, it's a freepower in the intake duct. Schreckling made it of plywood which makes it easier to build, but power output is lower than from a turbine on the hot side. Also it needs post guiding vanes to reduce turbulences in the air going into the compressor.
So long, Dennis
PS: maybe I'm going to post some additional info Schreckling wrote about it when I'm back home from school