Awesome video, can't beat that start up sound it's just beautiful. Quick question.... How does the turbine start on these without (im assuming) any bleed air from an APU or GPU etc? Is the battery alone powerful enough to start the turbine?
yes, starter starts to spin the compressor and when around 15% of ng is reached the throttle is pushed forward to lo idle and fuel injection and ignition starts. The compressor is quite small and doesnt need that much power to start up that would require bleed air to help it, electrical starter is enough
Because the PT6 is not a direct drive turbine, like the tpe331, it starts quite easy and does not require giant batteries. This is, partially, why it is so successful
