View Poll Results: Which quadrocopters and/or tricopters do you fly?
Aeroquad 220 6.49%
Alien Jump Jet 49 1.45%
Alien Saucer 35 1.03%
Draganflyer DF-IV 35 1.03%
Draganflyer DF-V TI 24 0.71%
Draganflyer Experimental Brushless (Spectrolutions) 39 1.15%
Draganflyer X6 32 0.94%
Quadpowered 285 8.41%
Microdrone 59 1.74%
Mikrokopter V1.0-ME 104 3.07%
Mikrokopter V1.0-ME with NAVI 195 5.76%
Mini-Mixer quadrocopter 50 1.48%
Mini-Mixer tricopter 31 0.91%
Self-build quadrocopter flight board/firmware 1,636 48.29%
Self-build tricopter flight board/firmware 792 23.38%
UAVP 76 2.24%
UAVP-NG 26 0.77%
UAVX 76 2.24%
Walkera UFO #4 35 1.03%
Walkera UFO #5 47 1.39%
Walkera UFO #8 40 1.18%
X-BL 34 1.00%
X-BL FunPilot 25 0.74%
X-BL Autopilot, ReasearchPilot, Hornet, Hummingbird, Falcon 14 0.41%
X-UFO 69 2.04%
Y-UFO LA Heli 25 0.74%
Y-UAVP 18 0.53%
Y-UAVX 30 0.89%
Multiple Choice Poll. Voters: 3388. You may not vote on this poll

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Jan 21, 2010, 12:33 PM
Tri-Quad-Hexa-Octo-copters!!
Jürgen,
Vielen Dank für die Web-Seite. Der QC ist bereits in Teil 2 der Umfrage.
Cheers,
Jim
Quote:
Originally Posted by JUERGEN_ View Post
wurde etwa der QC-Copter vergessen ? ?
den gibt es auch schon seit ca. 2Jahre
- http://www.qc-copter.de -

die variante von "HCopter" - http://www.qc-copter.de/wiki/index.p...=TestFlug_X-19

jürgen
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Jan 21, 2010, 12:44 PM
xxxxxxxxxxxxx
JUERGEN_'s Avatar
Quote:
Originally Posted by reverendrichie View Post
Now that has got the be the coolest VTOL I have seen to date. Wow!!!

ist eine interessante seite.
- http://www.qc-copter.de/wiki/index.php?title=Usercopter -



jürgen
Feb 13, 2010, 07:36 PM
Night flier
wow majorly interesting stuff goin on here.
Feb 19, 2010, 10:42 PM
UFO addict
jk3n0bi's Avatar
Hey there JES!

Don't know if this one was posted, but it's one I found a few weeks ago in the mikrokopter forum. Its the nanocopter.

http://forum.mikrokopter.de/topic-13092-1.html
Feb 20, 2010, 09:18 AM
Tri-Quad-Hexa-Octo-copters!!
Thanks Jamie,
Added under quad projects along with Airbotix' Hexacopter too: https://www.rcgroups.com/forums/show....php?t=1054541

Micro Hexrotor UAV onboard Video - part 2 (6 min 46 sec)

Cheers,
Jim
Quote:
Originally Posted by jk3n0bi View Post
Hey there JES!

Don't know if this one was posted, but it's one I found a few weeks ago in the mikrokopter forum. Its the nanocopter.

http://forum.mikrokopter.de/topic-13092-1.html
Feb 20, 2010, 05:51 PM
Registered User
rimshotcopter's Avatar
Quote:
Originally Posted by jesolins View Post
Thanks Jamie,
Added under quad projects along with Airbotix' Hexacopter too: https://www.rcgroups.com/forums/show....php?t=1054541

Micro Hexrotor UAV onboard Video - part 2 (6 min 46 sec) Cheers,
Jim
You know, this is becoming just a little bit too spooky and Matrix for me. LOL
Feb 20, 2010, 11:09 PM
UFO addict
jk3n0bi's Avatar
lol
Mar 16, 2010, 02:25 PM
multi-rotor man
arrio's Avatar

quad controller with stabilisation for collective pitch rotors


Been looking, but have not seen any development or offerings for controllers for quads or tri's with collective pitch rotors. I can do convention mixing with seperats gyros and such. But looking for some developed product to incorperate most of the equipment. I am not programing literate.
Anybody happen accross any info in this area?

Many thanks,

Alfred
Mar 16, 2010, 03:17 PM
Tri-Quad-Hexa-Octo-copters!!
Hi Alfred,
In the first post in the Mega Index of info links under quad projects you will find Redfox74's variable pitch quad build: https://www.rcgroups.com/forums/show....php?t=1187308
and
https://www.rcgroups.com/forums/show....php?t=1211064
Gerorge's Quadpowered board might be able to do variable pitch too, so you might inquire there. No one there has built one that way to-date. Here: https://www.rcgroups.com/forums/show...ht=quadpowered
Cheers,
Jim
Quote:
Originally Posted by arrio View Post
Been looking, but have not seen any development or offerings for controllers for quads or tri's with collective pitch rotors. I can do convention mixing with seperats gyros and such. But looking for some developed product to incorperate most of the equipment. I am not programing literate.
Anybody happen accross any info in this area?

Many thanks,

Alfred
Mar 16, 2010, 09:04 PM
multi-rotor man
arrio's Avatar
jesolins. Thanks for the link pointers. The Quadpowered boards look promising. The others seem to have stalled with little success.
A friend and I are assembling a rather large airframe with approx 30" rotors, with collective pitch. Hope to post some pics and success stories soon.

Thanks again,

Alfred
Mar 16, 2010, 09:22 PM
Tri-Quad-Hexa-Octo-copters!!
Alfred,
Did you see the flight video he posted from yesterday in the second link above? I think Red first started posting his progress in February.
Looking forward to seeing your build!
Cheers,
Jim
Quote:
Originally Posted by arrio View Post
jesolins. Thanks for the link pointers. The Quadpowered boards look promising. The others seem to have stalled with little success.
A friend and I are assembling a rather large airframe with approx 30" rotors, with collective pitch. Hope to post some pics and success stories soon.
Thanks again,
Alfred
Mar 16, 2010, 09:38 PM
multi-rotor man
arrio's Avatar
That video did show good stability for the short hop it made. However the project seems to be a modification to another opensource(?) board, and a colaboration. It would require some amount of programing knowledge, of which I have none.

Thanks,

Alfred
Mar 17, 2010, 05:53 AM
Tri-Quad-Hexa-Octo-copters!!
Alfred,
The Quadpowered board would be a good choice for you then. George has been trying to find someone interested in using his board with variable pitch props/rotors. Go for it!
...
Cheers,
Jim
Quote:
Originally Posted by arrio View Post
That video did show good stability for the short hop it made. However the project seems to be a modification to another opensource(?) board, and a colaboration. It would require some amount of programing knowledge, of which I have none.

Thanks,

Alfred
Mar 17, 2010, 06:04 AM
Registered User
rimshotcopter's Avatar
Quote:
Originally Posted by jesolins View Post
Alfred,
The Quadpowered board would be a good choice for you then. George has been trying to find someone interested in using his board with variable pitch props/rotors. Go for it!
...
Cheers,
Jim
My brain is working overtime, I wonder if using a coaxial bladed system and varying the speed between blades would have the same effect as a variable pitch prop system? Hmmm?
Mar 19, 2010, 10:11 AM
Registered User
Quote:
Originally Posted by reverendrichie View Post
My brain is working overtime, I wonder if using a coaxial bladed system and varying the speed between blades would have the same effect as a variable pitch prop system? Hmmm?
reverendrichie,

I'm not sure exactly what you're getting at. There are a few multirotor vehicles out there that employ two co-axial rotors per arm (such as this one http://www.draganfly.com/uav-helicop...pecifications/).

Collective pitch results in a much quicker application of thrust than increasing the rotor speed. Due to the combination of the rotor inertia and the time it takes for the flow to accelerate, there is a significant delay in changing the thrust in a RPM-controlled system. Also, thrust vs collective pitch is a linear function, whereas thrust vs RPM is a quadratic function.

- Roy


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