Originally Posted by
cattletruck
Interesting points covered such that it can be turned off in cruise, it can be quieter, etc. It could even be turned off with skids on ground, collective fully down and with mains turning for that extra safety. What I'd like to know is how authoritative is it over the original one, especially with a gusting wind abeam. Being fixed pitch I guess they can spin the motors in reverse if the anti-torque ain't enough. Being electric also makes it susceptible to the water ingress and will need extra environmental testing.
I guess you don't even a long tail anymore and just have a stubby tail with 2 of these things either side of the stabiliser. Computer controlled heading would also a doddle to install.
Having said all that I'm still not convinced.
More great points, the more you think about this I expect the more advantages will present. It's only a hop, skip and a jump to the Avatar type contra rotating fans. As long as the power source can replenish the batteries quicker than the fans can deplete them the only limit is imagination.