Hydrogen peroxide turbine development questions.

[GrantB]

I finally have a little free time to do turbine stuff and I'd like to put my energy into a Hydrogen Peroxide turbine.

After doing alot of rough sketches and research (mainly on gears) I decided to just look at turbine engine starters to base everything off of(ie scale).

Does anyone have an opinion on using something like the Parker Air Turbine Starter 36E123-20? I found one on ebay for $400 that looks like a nice start. My first plan of action would be to protect the housing from the hot exhaust gasses as well as maybe a pressurized oil spray setup for the gearbox.

Any ideas for a better part i should track down?

Thank you,
Grant

p.s. I know you guys have been very generous with information in the past so i really appreciate the help.

[racket]

Hi Grant

It looks like a good place to start .

Its input airflow has pressure and temp limitations which may or may not be compatible with what you'll feed it though ....................what sort of delivery pressure are you thinking of using ?

Cheers
John

[pitciblackscotland]

Hi Grant,
Why don't you try one of these starters www.ebay.com/itm/152121845193?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
www.ebay.com/itm/VINTAGE-BRITISH-THOMSON-HOUSTON-TURBO-STARTER-TYPE-TBS-720-MK-2-AEROSPACE-/371614839864?

Using Hydrogen Peroxide will have very high temps.

Cheers,
Mark.

[racket]

Hi Mark

Yep , much better for very high pressures too ;-)

Cheers
John

[gidge348]

Yep I would be a little careful with H2O2 in a turbine not only lots of heat, but lots of free O2 going through the hot turbine.

Arnold from Swiss Rocket Man made one in the late 90's and it did not end well..... Although it sure looked like fun while it lasted ...

www.youtube.com/watch?v=Jm79PKoWY7M

www.youtube.com/watch?v=3e3CmzoMHRU

[GrantB]

Thanks for the links.

I honestly hadn't put a whole lot of research into the diffrent starters because I thought they were prohibitively expensive. Also I was not finding the info about their opperation as easily as I had hoped-for.


Looks like I need to hit up some of the manufacturers for some simple operational info.

I want to say seeing that video is what originally put the thought into my head. After being around everything from heavy equipment engines to rocket turbo pumps the construction of his driveline looks a little optimistic for the claimed power output.

The info I have about hydrogen peroxide kinda revolves around KY Michaelsons book. He mentions 450-625psi of propellant pressure although I assume this is due limitations of some component of his fuel system. I will experiment with diffrent pressures and nozzle sizes when I get to that point. Currently thinking an impingement nozzle will work best and the higher the pressure the better(don't they atomize better at higher pressures)? Won't a better atomization be more efficient? For turbine pressure I'm not sure what is best just yet. I would think the max pressure will be derived from what the bearings and turbine wheel can handle.

Lots of fun experimenting to do.