Originally Posted by
Pilot DAR
... which I opine does not include helicopters in the foreseeable future.
That depends on the advantages gained, I personally think that an ETR brings a lot to the table in terms of efficiency and noise.
Motors, generators and actuators are already used, so we know how to design for certification, nothing daunting there.
As has been pointed out previously the technology is already here. It's simply about the investment.