Anfi - what do you fly?
Have you experienced flight with reduced TR speed?
I'm struggling with this scenario (hi spd shaft failure):
If I am to believe what is being described in general with the AS350, if you are flying along in cruise flt and the hi spd shaft fails, you fully lower the lever because the ECU falls to flt idle. At the same time, because the TR slows, the a/c yaws uncontrollably in the direction of MR rotation to an offset position, left or right of the nose dependent on the type of helo.
So now we have a scenario where the a/c is in an auto with no TRE, yawed off. At the flare stage you increase Nr. Because you have no control over yaw, the a/c then yaws further in the direction of MR rotation - no???
Does one then chop the throttle prior to shut down to bleed the Nr down cancelling any further yaw offset?
Why didnt OEM's like Aerospatialle drive the TRGB from the main GB? Much much less complicated and no worries with a hi spd shaft failure. I don't understand why they have gone down this route??
