Tricopter Wing Rudder

by mxclouti | May 28, 2013 | (4) Posted in Projects

Tricopter Wing Rudder using HXT900 servo and some heli parts:

- ball ends
- adjustable linkage rod 
- blade

COMMENTS

gmyers2112 on May 29, 2013
simpler to just swivel the motor
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Klaus on June 1, 2013
I recall seeing a video, Russian if memory serves, of a setup that did work. They used a double rudder assembly like what you find on an airboat.
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MDOwn on June 13, 2013
Good idea, but for me you lose the main advantage of a tricopter over quads and hex's in that regularly, with the whole motor pivoting you get all of the thrust of this motor acting in a vector direction, this divides the thrust, in best case by 2 (which you will not be getting near without a ducted fan), meaning the yaw direction change is not as responsive. I may be proved wrong but I am not convinced. Perhaps a grid of rudders (like the A/C vents in a car) would work. but still the most effective way is to pivot the motor and just tune your settings properly
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RoyBro on May 29, 2013
It's an interesting concept, but I would imagine (in my non-engineer head) that the prop wash needs to be more concentrated. Maybe like from a ducted fan with the "rudder" inside the exhaust.

I too eagerly await your results.

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t.tsiplakis on May 29, 2013
is it working in the air?????
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mxclouti on May 29, 2013
I will try it tonight and let you know !
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x3mperformance on May 29, 2013
I highly doubt that.
Thinking logic, it has no chance getting near the rudder control made from the conventional yay from the tricopter.
And since the aerofoils is in the wrong orientation, that cant add any help to the performance.
I must say, the "thinking out of the box", is getting some credit.
But this will need some serious Work, to be good.
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mxclouti on May 29, 2013
Oh well, as it stands, it's not working at all !
The tricopter is spinning on itself.
And yes, everything is setup correctly on the KK2 board (receiver test, mixer, ...)
I'll come up with something else !
Thanks for your comments.
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RCMAD on June 20, 2013
I have to ask if your Tri is a Flying copter, did it fly using the conventional method, if so do not give up on this project, I have built many different Tri's and the idea u want to use, do work and works very well, although a little slower than the conventional but a lot more stable around its own axis ( pirriouette) Keep trying !!

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RCMAD on June 20, 2013
By the way ... the blade I use only covers halve the propwash and is a little taller than yours ... Currently using this principle on my reverse TriCopter.

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eagle4 on May 29, 2013
i think reversing the aerofoil will help, but it may actually work with just a flat piece, no need for the aerofoil.
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Cyberdactyl on May 30, 2013
Is the back prop spinning opposite, or they all the same?

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mxclouti on May 30, 2013
M1 -> CW
M2 -> CCW
M3 (back) -> CW
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Cyberdactyl on May 30, 2013
Reason I ask is I've seen video of thrust deflection vanes tri's work over at RCGroups several times.
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t.tsiplakis on May 29, 2013
ok ;)

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tsbanking on May 29, 2013
I'm guessing it will be a lot smoother than regular yaw mechanism, but harder to control...
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Cyberdactyl on May 29, 2013
I predict it will work "ok", but the foil may twist a bit under the airflow and may have some flutter.

The foil with the 'leading edge' pointed down makes no real difference in this situation as it appears symmetrical.

Good Luck!
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Tricopter Wing Rudder