Doug, I have some questions after reading the Turbo Compounding report.
You say: "For ease of installing the unit near the front of the rotary it is
best that the input
shaft and output shaft both turn in the same direction."
Which end are you describing as the front of the rotary? Need a more definite
term here as the
engine is oriented differently in pusher vs tractor planes. Also, which shaft
do you mean by output
shaft? The engine output shaft or the turbine output shaft?
Also, it is not clear to whether you are using just the reduction drive from
the rotrex or the whole
unit including compressor as well.
Thanks,
Hans
Hans
Yes we do have tractor and pushers airplanes and that is why it is less
confusing to refer to engine part in the way Mazda designed it. Flywheel and
bell housing in the back, water pump on the front. Feel free to clarify it
by inserting (water pump side).
Next I was speaking about the traction drive.
It should read "For ease of installing the traction drive near the front of
the rotary ( water pump side) it is best that the traction drives' input
and output shaft both turn in the same direction as the engine e shaft. That
is clockwise when looking at the front of the engine.
Hans just for your understanding the ROTREX traction drive would not be used
with the compressor attached. Another complete unit #C30-94 model I
referred to might be used to boost the engine though.
This traction drive part of the unit can only be used 'as is' if it could be
connected to a custom designed turbine rotating counter clockwise as viewed
from the front of the engine. On the particular design I have in hand I
don't think it is safe to try and modify it.
Paul is trying to address this problem by making a completely new traction
drive taking the power off the planetary.
The design of the 'final' custom turbine is a ways off but I have noticed
Horace Ho at <http://jetbeetle.com/> in Taiwan has already been making and
selling some nice
" custom cast turbine wheels, NGVs for you, covering sizes from 55mm, 60mm,
66mm, 70mm, 90mm,130mm, and any sizes in between, you name it, we build it.
Here are what we have done for our customers :
* Two different turbine wheels, a 55mm size,† and a 60mm size, with
redesigns for improving the blade's mechanical strength and aerodynamic
performance, so that it is near optimization.
Thanks for catching the mistakes..
Doug F.
Doug, can that guy build them in Inconel?
Paul
Naturally.. They have their own vacumn furnaces.
Inconel 713 LC max temp just shy of 1700 degrees F. His company has quite
an operation. I have been following his work for about a year now
Go here
<http://jetbeetle.com/> and click on 'Products'
I mistakenly thought all their turbine rotate clockwise. Actually they
rotate counter clockwise which is fine for the ROTREX traction drive.
Paul just brainstorming here. Horace claims his wheel is a combination of
an axial, reactive. Probably more of an the axial.
If the two exhaust pipes are brought in with two nozzles where do the hot
gas escape from? Assuming the gases have to actually through and around
right?
Here is recent email from Horace.
Hi Doug,
Thanks for your email, it is very interesting to receive project supporters
from all over the world. Yes for me, even a encouraging email is very
supportive for me.
Most of your turbines rotate clockwise when looking at the front of them.
I need one to rotate counter clockwise. Can you make them both ways?
As for our 128mm wheel, the wheel is already counterclockwise as looking at
the front. Are you refering to a wheel rotates clockwise ? If so I am afraid
we won't be able to do that for you, as for the time being we are very busy
making bigger engines, one of which is a 200 lbs turbojet, and the other
350lbs turbofan.
By the way you
might be interested in this technology to replace the gears on your
planetary drive. Go here for their website. http://www.rotrex.com/
We can make the gears by ourselves, accompaying our upcoming twin spool
turbofan project there is a turboprop engine using the same core, we will
make the gears by then. I am very happy because our turbofan engine is still
in early stage of development but already have prospect buyers enquiring the
details.
Keep in touch,
Regards,
Horace.
Paul,
OOPS I was wrong again. For going into the front of the engine it looks like
the it won't work with the ROTREX either. Wrong input direction.
Doug in Japan
----------------------------------------
I think the melting temp of Inconel is 2600 F.
BTW for people reading this we will not need a turbine rotating
in the opposite direction if the traction drive I am building
works.
Paul Lamar ...No rotor no motor.
-------------------------------------------
Didn't Williams already tried to do that?
Clifton
-------------------------------------------
Nothing at all to do with it.
Paul Lamar
---------------------------
Huh? I, was refering to the 200 pound turbojet.
Clifton
----------------------------------------
Oh you mean what Doug is talking about.
That has nothing to do with rotaries. Doug is talking
about using one of their turbine wheels as a blow
down turbine I think.
Paul Lamar ...No rotor no motor.
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