flight stabilization by 3 gyro, is that possible?

[snow520lee]

Hi Freaks,

I have a question bother me from a while, and i hope here someone could give me some answers.... (i know you'll do!)...

I'm not a very good pilot yet, still making hovering and some simple manouvres, but i love build up my helis.

I was wondering if it might be possible and make any sense to install two additional Gyro on the heli for auto stabilize the airelon and elevator.

I think it will help to avoid drifting, and move in a specific direction only with stick input....

(if I've understood correctly, it will be pretty much as a flybarless system, isn't it?)

If yes, do you think it will work also if i remove the paddles and flybar?
This system will consume more power than a kit produced by some company for flight stabilization, but my question is just: "will it work??"

Thanks in advance for any reply....

Happy flights!!!!!

Marco

[Robban]

I would say that if you want a stabilization system, then get the Co-Pilot II and if you want to get rid of you flybar them get a flybarless system. If you want both then get the Skookom SK720 fbl system or Beastx with Co-Pilot II. The SK720 is a fbl system with built in stabilization.

Oh and my answer is, I don't know if it will work but I would not try it myself

[jperkosk]

Theoretically possible with 2 good HH gyros on a mCCM heli, but counter productive. A good HH gyro runs around $100 and you'd need two of them for cyclic. The gyro-based direction holding is short-lived, so I suspect the net effect would be more similar to fbl controller than a flight stabilization system, meaning your heli would start drifting after 10 second or so...

Impossible to implement on an eCCM heli, which excludes a grand majority of today's birds from this experiment.

[fastflyer20]

In flybarless units The Skookum SK720 and the Helicommand HC3-SX both have flight stabilization. The SK720 can get automatically disabled by high vibration so the HC3-SX is the best choice. There are other stabilization systems such as co-pilot II that people say work well. I have never tried them.

[pril250]

You cant just use three gyros, you need a stabilization controller too and that is what all the boxes on the market do, mainly take the swash mixing away from the tx into the system itself. There is a youtube vid out there of a guy who tried doing it just with the two gyros on ail and ele but it didn't work.

[fusionsx00]

From what I remember reading is gyros on the cyclic were used to replace the fly bar.

That started the flybarless craze,

I don't think that's what your looking for, but to me flybarless helis are so much easier to fly.

You should try flybarless, the other advantage is a lot less parts on the head, so its cheaper to fix and easier to maintain.

The other thing I want to say is the heli has to be running and setup correctly for any of the systems to work properly.

[Wesley888]

Originally Posted by fastflyer20

The SK720 can get automatically disabled by high vibration so the HC3-SX is the best choice.

With SK720 vibration logs, how can one's heli still have high vibes.

[fastflyer20]

Not everyone flies electrics....

[Ivor Hill]

Originally Posted by Wesley888

With SK720 vibration logs, how can one's heli still have high vibes.

With a mechanical falure during flight, the most likely time to have one.

It would seem that HC have opted for vibration damping and Skootum vibration analysis. Having both would be nice if you could switch of damping to analyse vibration. But if I had to choose I would choose damping and I would decide weather the amount of vibration is exeptable or not.
Vibration analysis is very nice if you have the money,time and knowhow to eliminate all vibrations and it can be very expencive. Just my opinion of course.

[snow520lee]

Thanks guys for your answers,

i didn't thought before the fact that on CCPM for airelon thera re two servo to control (and for elevator in fact are three). Maybe my idea could work on the old Trex450 I have with the 90' swashplate. But also, like someone suggested, it will not really stabilize the flight, drifting will not disappear.

Interesring another point I've read in your replies, this system will be more closer to the flybar less system. I never tried one, is it really more easy to fly? what the advantages to flybar less?

Thanks again for your precious answers.

Marco

[fusionsx00]

Try to find a local flyer that will let you try out there fbl heli, its really something you gotta fly first hand to really value how good it is.

Other option is to give one a try, beastx is one of the best ones, low cost , good performance and easy setup.

[snow520lee]

thanks Fusionsx00...

i'm starting the idea to buy one of those supercombo kits from Align with the 3gx FBL...

do you know if the 3gx is comparable to beastx (which would you chosse between those two and why....)

thanks!!

marco

[Skyjacker07]

I know it's off subject a little bit, but quadcopter control boards use 3 gyro's, it's a whole different animal compared to a heli, I'm not sure if the technology could be adapted for a heli or not.

[fastflyer20]

BeastX always works, 3GX USUALLY works, if choosing between the two, get a BeastX.

[pril250]

Originally Posted by Skyjacker07

I know it's off subject a little bit, but quadcopter control boards use 3 gyro's, it's a whole different animal compared to a heli, I'm not sure if the technology could be adapted for a heli or not.

Many systems incorporate three gyros but it is the accompanying electronics and firmware which decide how and what they control, whether FBL or stabilization.

[fusionsx00]

My vote goes to beast x