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PPRuNe Forums (https://www.pprune.org/)
-   Rotorheads (https://www.pprune.org/rotorheads-23/)
-   -   Is Bell testing a multi-fenestron? (https://www.pprune.org/rotorheads/629874-bell-testing-multi-fenestron.html)

CTR 2nd Mar 2020 00:21
Originally Posted by SuperF (Post 10700142)
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 2nd Mar 2020 00:32
Originally Posted by MLH (Post 10700113)
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.


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