dsbarno wrote:

What is optimal turbine inlet temp for a rotary?   How high would a
turbo with no intercooler at 5 psi or 10.15 inch boost be able to keep 
a rotary to 100% power?

Barny

With an Inconel wheel the max TIT should be less than 1750 to 1800 degrees F.
I don't know what you mean when you say optimal.
 
I am no expert when it comes to turbo chargers. That is a complicated
question depending on the turbo charger used to generate that 5 psi
boost. The waste gate will be open  all the time until you get
way up there.  With the right turbo you might be able to flat rate the
engine to 30,000 feet. Probably higher than you want to fly unpressurized.

Jeff might be able to answer this question and tell you what version of 
the TO4 Garrett or other turbo will get you how high. Perhaps you will, at 
some altitude, need and intercooler despite the modest boost of only 5 psi.

The down side is you will probably be hauling a larger turbo around
than you really need most of the time. The upside of this is the
turbo is likely to last longer.

I highly recommend getting Hugh MacInnnes HPBooks called Turbochargers.
Another good one is Corky Bell's book Maximum Boost.

Paul Lamar
 
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