white death

hello I'll built an A-7 corsair II made of polyester and I want to use it with turbine, but I have a ploblem. The turbine will be homemade I know how to built a tourbine but I don't know what material I must use. Can anyone tell me what I should use and how I can work whith it ?


thank's a lot whitedeath.

AERORICH73

Hi White: I believe you will find that the turbine blades are made of tungsten, with the rest of the assembly made out of stainless steel. Both of these materials are difficult to work with. Purchasing a factory made turbine within your budget would be a far better idea.

Richard Scherer BSIT
Retired Aircraft Mechanic
HORIZON AIRLINES
Portland, Oregon

Flying freak

I would think asking this in the jet forum would get you alot more replies umm turbions are complicated machines and myself dont trust my work for 20 ooo rpm let alone 160 000 rpm[X(]

MinnFlyer

My Feedback: (4)

If you have the capability to make a Turbine, and you succeed in doing so, PLEASE don't let anyone near it when you test it!

And one more thing... Polyester melts

Ed Smith

Minnflyer,

I truly wanted to say something in a similar vein. I decided to let somebody else get into trouble.

Ed S

TFF

I think turbine blades are made of titanium. The early turbine kits and home builds used turbocharger compressor and turbine wheels; now they make them to their own specs. the big thing is controling the fuel. there are kits out there to make your own

khodges

My Feedback: (1)

Well, two people said something about it, why not three. My thoughts were, if you KNOW how to build a turbine, then you'd also KNOW what kind of materials to use.

allanflowers

I was wondering if he actually meant "ducted fan"? Even then, it would be far better to buy one.

khodges

My Feedback: (1)

Got an interesting PM from our thread starter, saying as how I was rude, etc to say what I did in post #7 above. I stand by what I said. If a carpenter knows how to build a house, he knows he uses wood, and what kind works best for a given structure. Same goes for any engineer. As in my reply to his PM, I'd like to see whatever he comes up with, a video of it in operation would be great.

Square Nozzle

My Feedback: (1)

Search through some of the turbine manufacturer pages like Jet Cat, PST, Wren, SimJet etc. I think you'll find that the turbine blades are typically cast Inconel. Tough stuff and more heat resistant than lower grade steels, titanium and aluminum.

Ed Smith

khodges byline

What other trouble can you get into? Easy, just respond to a dubious Turbine builder.

Ed S

MinnFlyer

My Feedback: (4)

I got that PM too. If saving lives is being rude, I'll be rude.

khodges

My Feedback: (1)

undefined

Minn, What's this "undefined" that's showing up under quotes and smiley faces now? Please don't be rude, I'm sensitive.

nitrohog

Unless you're doing one of those "convert a turbo into a turbine" kits, which will be heavy, I don't see any reason to even attempt to build something like this. The cost in tooling, balancing, casting, and materials will BY FAR exceed the savings over buying a quality specific built engine. The safety factor is a big thing in my eyes, just think if a little kid rode by on his bike, or something like that when this thing decides to have a hot start and come apart. Shrapnel will literally fly everywhere injuring, or killing anyone or anything in the area. IMHO its just not worth it. Unless your working in a huge machine shop with millions of dollars worth of tooling and you have a engineering degree to back this thing up, PLEASE leave something like this to the pros. Let your conscious be you guide.

Ed Smith

Maybe, just maybe, he is trying for the 2007 Darwin trophy!

Ed S

DelRay

When this post first started, I myself thought "if one knows how to make a turbine, one should know the materials needed". I was going to reply with those very words, but I felt it might offend the person making the post, even though that's the bottom line. Possibly this post was started for a reaction rather than information. Either way, I feel that no-one here meant to offend or had rude attitudes in their responces.

Steve Collins

My Feedback: (8)

White Death,

Go here for the information you need:

http://www.gtba.co.uk/

white death

likely there are persons who answere in my questions without judge them

thank's to those people

j.duncker

My Feedback: (2)

This is a good book to start with.

Gas Turbine Engines for Model Aircraft
Kurt Schreckling, Keith Thomas
<--Amazon.com: 108 pages, Traplet Distribution USA Ltd. (December 6, 1994)
<--Amazon.co.uk: 108 pages (November 1994), Traplet Publications
A reader, UK, November 2, 2001
Great book if you want to build a small gas turbine
If you want to build a gas turbine then this book is for you. It gives you all the information on how to build and run the engine along with equations on working out the stresses etc. The engine can easily be built using a lathe, pillar drill and scrap metals.

But the way I beleive that at least one of the early engines had a wood based compressor fan.