I think that the obvious question to ask is:
If an electrically driven tail rotor could be made as reliable as a shaft driven one and it was around about the same price, same weight and had benefits such as lower maintenance costs, why isn't such a system in use already?
The simple answer is the advances in technology driven by the hybrid and electric vehicle markets over the past decade now make production of such a system feasible. The operational environment is changing which may make it attractive to the market place. Hence the new interest and why a system has been ground tested.
Originally Posted by
Pilot DAR
... I asked then why so much focus on yaw control failures. He said he'd asked the same question during instructor training, and why no training for stuck cyclic or collective (also apparently extremely rare. There was no good answer to the question...
I'm not sure how you'd train to cope with anything that causes a stuck main rotor actuator.
Originally Posted by
Lonewolf_50
...
There were some mechanical conditions I vaguely recall that would lead to flat pitch or stuck pitch ...
Control rod failure is one that immediately comes to mind.