Originally Posted by
FrequentSLF
must be a really noisy clutch to be heard in the cockpit all the way from the tail...and recorded on the CVR, unless there are microphones on the tail.
Well, it is probably more correct to say that the vibrations from the slipping clutch are transferred through the manual trim linkages to the cockpit where they do create a bit of a racket.
]the motor, according to the manual and info on the net is a DC servo motor, driven by a 3 phase AC/DC converter, with an unknown type of controller. A decent converter has the capability to limit torque and current in order not to exceed the theoretical thermal limits, there is no need of breakers or clutches, it can be easily software mananged, however i do not know if such will be within the aviation certification requirments.
Again, not my area of expertise, but it’s all pretty much a theoretical discussion since there were no signs of the trim motor not working when commanded to do so.