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HomeScaleAircraftHelicopterScale Model RC Helicopters › How do these work?
06-07-2009 03:04 PM  9 years agoPost 1
Blackhawk6

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Trenton, Mi

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I don't know if I'm asking a dumb question or not but I always wondered how these heli's wrk. How do they run with out a tail rotor? I've seen these fly and noticed that the tail mechanism rotates back and forth during flight. Is it wind coming out of the tail? I was just wondering?

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06-07-2009 03:42 PM  9 years agoPost 2
Hoverup

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Golden Gulf Coast - USA

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NOTAR helicopters have a giant fan inside the fuselage that sucks in air just behind the cockpit and blows it out again through a side hole near the tail. This produces the same sideways force as a tail rotor, but is quieter and safer.

Cheers - Boyd
AMA 80393
IRCHA 3355
LSF 853
Major USAF
Retired

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06-07-2009 03:51 PM  9 years agoPost 3
Blackhawk6

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Trenton, Mi

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Thats what I thought it did. I knew it had something to do with forced air coming out of the tail cause I've seen the tail move in flight to turn. What an awesome machine! Thanks for the info.

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06-08-2009 07:36 PM  9 years agoPost 4
Copter Doctor

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Enterprise/ft.rucker ,al- home of army aviation

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there is also a slot on the right side of the boom where some of that forced air escapes downward. it is slotted in a way that causes the escaping air to stick to the boom as it comes down and curves towards the left of the heli. it also makes some of the downwash follow this curved route to actually help counteract the torque. this is known as the coander effect. pretty darn sneaky. the vario models however have no need to go thru all that coander mumbo jumbo to work
i have been fascinated by the notar since its introduction.

drive a rotary, fly a rotorcraft

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06-08-2009 11:51 PM  9 years agoPost 5
Blackhawk6

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Trenton, Mi

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Just like I said in the previous post "What an awesome machine!" Thank you guy's for upgrading my brain!

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