Blackbird Sims / Milviz Forum Archive

Just seeking confirmation that the current shown ITT after take-off and initial climb is correct for the KA350i. I'm asking as my experience from other aircraft with the same type of engine showed a different relationship on TQ and ITT at low altitudes. Also the provided TQ diagram suggests that it is feasible to use 95-98% TQ after TO, but with that the ITT is running at the limit if not above.
My experience is that initial climb can be flown with nearly full TQ and ITT is well below limit, but ITT gradually continues to climb with altitude and somewhere at 14-16000 ft ITT becomes the limiting factor for TQ, as also shown in the TQ diagram.
Comments welcomed!

Hi,

Engine parameters were updated and new values will be available for the SP.

As a reference, take a look at these pics (ISA conditions):


Top pic is 1700 RPM, climbing through 18,000 ft with max torque and ITT below 820 C limit.
Middle pic is 1600 RPM leveled at 19,000 ft. still max torque and ITT a bit cooler.
Bottom pic is 1500 RPM (max cruise table) at 19,000 , max torque and ITT below 800 C.



Tomas

Great to see this improvement. Thank you.