Originally Posted by
tartare
Plank driver here.
In picture above - assume power then travels to rotorhead by a right angle gear out of picture to the left?
So - does gas coming in actually flow around the lower section of the rotor mast to the face of the axial compressor?
That output shaft speed is labelled @ 6,000 rpm. Main rotor rpm is normally no more than 300 and they have to be mounted on a substantial shaft. It certainly needs more than a right angled gearbox.