When the turboprop engine is active, the propeller shaft rotates and causes the propeller to rotate as well, which in turn generates thrust. The propeller shaft rotates because of the torque (or twisting moment) created by the turbines of the engine and then which is conveyed to the propeller shaft. My question is that if I am trying to conduct a FEA analysis for the mount at which this engine is attached, should I also apply this torque on it or not?
I was thinking that I shouldn't apply any kind of torque at this engine mount since I don't think that engine itself is rotating at all because of any twisting moment, but it is recommended that the torque should always be taken into account while conducting such analysis. Moreover, I believe that there exists some bearings somewhere inside the engine which makes the engine mount to not take any kind of torque generated by the engine.