Gender
Male
About
Location
78120
About Me:
Http://vgrsystems.free.fr
Please tell us a bit about your UAV interest
UAV developper
Hometown:
Paris
Activity Feed
"Yes and consequently a better efficiency but there is still a lot of work on the contra-rotating motor!
inverted = not working, I stopped the tests after about 10 crashes:D
thks!"
inverted = not working, I stopped the tests after about 10 crashes:D
thks!"
"@John Arne Birkeland, thanks for the link, CR23L was amazing but with a weight of 300g, it's too big for me because I want to keep a "pocket" size. With these CR motors, your project was not a copter, it was a rocket!!!
@John, thks,
@Alex, the yaw…"
@John, thks,
@Alex, the yaw…"
"@Romushok, thanks for the link, not easy!! that's more or less what i try to do with the antigravity 4004 with two ball-bearings. I have to test it now... many thanks!"
"@Robert (and the others),
3D design is available on thingiverse with some advices for the mounting. Enjoy!
http://www.thingiverse.com/thing:1721441"
3D design is available on thingiverse with some advices for the mounting. Enjoy!
http://www.thingiverse.com/thing:1721441"
"@TheSun, yes but at least I will try to log the integral values in order to figure out why there are these violent counter reactions when in ACRO mode with a big Iterm. thks a lot!"
"thks all,
@Paul, you're right, the disk loading is still very high, even if the flight time is pretty good due to the the low weight of the frame (less than 30g). But it's the max i can get from this motor from Himax without firing it (I…"
@Paul, you're right, the disk loading is still very high, even if the flight time is pretty good due to the the low weight of the frame (less than 30g). But it's the max i can get from this motor from Himax without firing it (I…"
"Yes, of course. Even if i'm working on a second version possibly with a carbon frame, i can share the 3d printed parts maybe on thingiverse. I will try and post the link here. Thanks for your comment."
"Because i want to try cleanflight and take advantage of the floating point calculations of the stm32f3. I suspect an overshoot in the integer during fast forward when using integral-pid and gess that a float could avoid that... we will see:)"
Hi, Just a quick update for the thrust vectoring coaxial drone project,Config:Maxxprod Himax contra-rotating brushless motor CR2805,7x5 props replaced by T-Motor carbon fiber 9x3 resulting in more efficiency.Flight time is about 15 minutes with…
"@XinH, yes the upper prop is connected to the lower motor. The lower prop is directly screwed to the upper motor. But i didn't design this part. You can find this kind of motor here:
http://www.maxxprod.com/mpi/mpi-266.html
Regards,"
http://www.maxxprod.com/mpi/mpi-266.html
Regards,"
Tilted Contra-Rotating System.Next system will use folding prop to miniaturize the drone.
"Xin H, do you mean a video?
If yes you can see the mechanism working on this video below:
Regards,
VGR"
If yes you can see the mechanism working on this video below:
Regards,
VGR"
"Petr, thanks and you're right, i don't know but maybe the system is finally not so rigid or it accepts some torsion (minimal because i think that the additional distance is maybe less than one mm). below is the system working. and commands are…"
Here you can see the first "flying" prototype of TCRS UAV.PID tuning need to be refined to have a smoother flight and video.The frame is 3D printedLipo 3S 4400mAh ;Maxxprod CR2816 with 2 x 20 A controller ;2x Futaba S3155 digital servos ;Custom…
"Of course Paul, i'll do it! Thank you for your advices!;)"
