karla

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Re: My LibrePilot VTOL TiltRotor FixedWing
« Reply #135 on: July 30, 2017, 09:51:13 am »
Thank you Cliff, yes I do.

The good thing with 433 mHz is the penetration though, and as I am just now flying line of sight this is still such an overkill at 100mW I am sending. This is despite the fact that I not only mounted it horizontally but also I am using a 1/4 wave length antenna and not the recommended 1/2 wavelength. But its so much more convenient for me - a clumsy guy, to bring in my car without smacking the antenna around here and there :)
I feel really confident the control signal will not fail me - and believe me I have spend a lot of time on getting the OPlink to work :) Trust it with my heart now.

So, today (video is a little 'more of the same') I did find a new place to fly where I can stretch out in full forward. Its not ideal since there are some water to the left but I feel its enough of land to point to if things go bad. Good things are, there are no people, no dogs, no kids, no buildings, no cars :) Unbelievable in Beijing. However, its kinda far away so I have little time to fly there.



The purpose today was to try turn the nob of tilt rotors to at least 25 or 50% forward flight.
However, as I started out it was a lot more wind that last time and the pitch was going back and forth and it did not feel comfortable. Before doing smt out of comfort zone then at least need to have a safe retreat place, like a comfortable hover. So did fly some 4 rounds and two LiPos to get PIDs better in this wind. Not really happy with result though, will take more time. I do have a good feeling about it though.

BTW, I am using Attitude with INS13 now for stabilization. The external mag is beautifully aligned.

« Last Edit: July 30, 2017, 10:10:21 am by karla »

Re: My LibrePilot VTOL TiltRotor FixedWing
« Reply #136 on: July 30, 2017, 08:51:54 pm »
You might try AutoTune, but look at the new PIDs before flying them.

karla

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Re: My LibrePilot VTOL TiltRotor FixedWing
« Reply #137 on: July 31, 2017, 03:30:54 am »
Interesting idea.
However, when I set Autotune as a Flightmode I get the red Config error warning.
I assume this is because this is a Custom craft?

Re: My LibrePilot VTOL TiltRotor FixedWing
« Reply #138 on: July 31, 2017, 05:55:44 am »
That sounds like a good guess.

I haven't checked the code but I wonder if disabling sanity check would allow you to do it...

karla

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Re: My LibrePilot VTOL TiltRotor FixedWing
« Reply #139 on: July 31, 2017, 07:24:10 am »
 ;D yes it worked.
But will autotune work?
I don't know how it can figure out correct settings - its really magic :)
But if you think I can give a try, then can I also give it a try on my Heli's?
Too good to be true?
« Last Edit: July 31, 2017, 10:23:20 am by karla »

Re: My LibrePilot VTOL TiltRotor FixedWing
« Reply #140 on: July 31, 2017, 05:20:49 pm »
The main problem with AutoTune seems to be bad results afterward, not crashing while flying the AutoTune flight.

It does induce 75% of full control step outputs.  I would guess a typical heli would handle that OK, and I would try it on a smaller cheaper heli, but I wouldn't want to be the first one to try it on a Trex 700.

I would definitely try it on the tiltrotor but check the PIDs before flying them.  Especially check for PIDs that are zero.

If it doesn't break because of the large control inputs, then it should be safe to try it up fairly high with a finger on the FMS, ready to switch to Attitude mode.
« Last Edit: July 31, 2017, 06:06:08 pm by TheOtherCliff »

karla

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Re: My LibrePilot VTOL TiltRotor FixedWing
« Reply #141 on: August 04, 2017, 07:38:05 am »
Thanks again Cliff.
This is a bit odd, the next day when I tested and wanted to use Autotune I could get around the Red Config error on the flight mode page, but the Health gadget had a red Config Alarm. Will not arm. The only way to get it green again was to remove AutoTune as flight mode. After doing that, there was still an Orange warning on the ?-box. That did not go away until I put the sanity Checks back in operation. Maybe there is another workaround I don't know. Would be interesting.

Anyway I tuned the Pitch manually and got better hover stability.

Unfortunately I leave tomorrow on a long trip and can't bring the wing along.
I don't expect I can update this project until end of September
- Turning the nob for forward transition and forward flight seems a cliff-hanger ;) until then - sorry.

« Last Edit: August 04, 2017, 09:24:15 am by karla »

emjay

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Re: My LibrePilot VTOL TiltRotor FixedWing
« Reply #142 on: August 25, 2017, 03:32:35 pm »
Hey Karla (and many others)

It has been a little while since our last comms. You are making some serious progress! The Mako looks great.

I saw this machine advertised today.  Check out the GCS view in the video.   Looks familiar to me.




Video of it hovering.



But have not seen any transitioning yet.

MJ

« Last Edit: August 25, 2017, 11:54:14 pm by emjay »

karla

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Re: My LibrePilot VTOL TiltRotor FixedWing
« Reply #143 on: August 25, 2017, 04:49:33 pm »
Hey Emjay!

Thanks and good to hear from you mj.
Yes, thats really interesting, surely based on LP, encouraging :)
Hope they publish a video when they fly hover mode and also the transition to and from it.
K

karla

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Re: My LibrePilot VTOL TiltRotor FixedWing
« Reply #144 on: August 26, 2017, 04:47:58 pm »
Oh these guys seem serious about this, aiming for supersonic, manned flights!?

Anyway, it seems to me from the videos that for hover they are not using OAT (oblique angle tilt), nor FAT (forward aft tilt), but using the small rudder below the motors for stability and control.
Interesting.
Seems they got the hover okay and also the forward flight okay, but how about the transition?
... and using CC3D according to the videos...

f5soh

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Re: My LibrePilot VTOL TiltRotor FixedWing
« Reply #145 on: August 26, 2017, 05:12:08 pm »
They are using a revolution board and LibrePilot
CC3D do not support current sensor.