Paul,
Yes this picture of axial impulse turbine picture is what got me jazzed
about T.C. in the first place. How to isolate the heat from the end housing
and gearbox would be a challenge. We are talking over 1650 degrees here
right? Put on the other end, isolated, with double walled housing and water
cooled shaft it might be doable. Space might then be the problem.
Hence we start testing with a less efficient but more compact centrifugal
turbine. Perhaps as Matt suggested once we have some data we can order up a
smaller axial turbine.
Reeves,
I did save your 10/2004 note but missed the significance of it. Thanks for
re-sending it. I am curious as to your thoughts if the same increase in
efficiency would happen at high altitude by engaging an Rotrex traction
driven supercharger (running off of the front engine belt) and devoting the
exhaust driven turbine solely to the function of turbo compounding?
You mention the T0-4 Garret group of turbines is good but for 300hp turbo
normalizing I believe Tom Parks is using a T0-6. Better?? In addition my
brother and other A & Ps have recommending RaJay units as a bullet proof
devices. I understand RaJay have been owned by everyone including Garrett
at one time or other. I completely agree with you on using
made-for-aviation-turbos however. In the bench test phase cheap auto turbos
can provide some serious data in the preliminary tests.
Doug Fir
-----------------------------
Paul,
It looked interesting before, it still looks interesting maybe even more
so.
It appears it would work, how well would it work? your best guess will do.
What is the cost guesstimate of doing this ? It does appear to have
advantages
at least in terms of simplicity. May be some sort of air flow through fins
between the engine and the turbine unit would solve the possible heat issue
just to try and keep it simple. Only a thought. otherwise maybe a water
barrier
of some sort connected to the cooling system via the water heater ports,
yes there
is a heat impact but it should not be OTT.
Regards David
One of your countrymen Paul Carey obtained
a air cooled blade turbine from an R3350 tubo compound
radial engine. This turbine generated 300 HP when
fed from six cylinders of the 18 of the R3350. He lived in
Perth but he gave up on the project.
Paul Lamar ...No rotor no motor.
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