Is Bell testing a multi-fenestron?

[CTR]

Originally Posted by SuperF

So for operations such as Fire fighting, Utility, construction, Agricultural, lifting, logging, SAR if lots of winching, etc a conventional TR would probably be better??

Correct. That is also why you don’t see helicopters with Fenstroms and Notars being used for these missions.

No solution fits every mission.

[CTR]

Originally Posted by MLH

I suspect that a flat pitched conventional TR in cruise does not pull much power.

It matters what you consider “much”. Adding in the open tail rotor additional drag, I wouldn’t be surprised at 30+ HP. A 407 tail rotor consumes about 70 HP in cruise.