Bicopter stability and control stuff - Page 3 - RC Groups
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Mar 05, 2013, 05:56 AM
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v22chap's Avatar
Just goes to show .. a brick could hover if you can program a controller ,, matter of fact hover charlie looks a little like a brick
Good job Aaron I finally have my Wii board out trying to make a head tracking unit out of it for my A&P bird ... This old man has a lot of respect for what you guys do on these boards ,,, I am so lost ... as there is a ton of material to go thru just to get ready to setup the board
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Mar 05, 2013, 07:12 AM
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rimshotcopter's Avatar
Ain't nothing like the real thing.

MiniMollie Training Day - Part II (3 min 35 sec)
Mar 05, 2013, 07:13 AM
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leadfeather's Avatar
Here is another (very cool) bicopter that flies great with out fan cant.

I might throw together a test rig to isolate cant/precession to see what happens with fan cant only, no tilt....kind of like the vinyl record experiment.

Falcon UH-144 HALO RC model bicopter (2 min 24 sec)
Mar 05, 2013, 07:18 AM
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rimshotcopter's Avatar
And the props can spin in the same direction, but it is of a different design and works under a different principle.

Twincpter [ Dualcopter ] Handicraft & KK2.0 V1.2 Vol.39 Test flight (6 min 52 sec)
Mar 05, 2013, 07:18 AM
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leadfeather's Avatar
Quote:
Originally Posted by rimshotcopter
Ain't nothing like the real thing.

http://youtu.be/GHoeGdqhdtU
Sweet! Very smooth flying; nice!!
Mar 05, 2013, 07:27 AM
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leadfeather's Avatar
Rimshot, how would you compare the flying qualities of your tilt only copter vs your tilt/cant design?
Mar 05, 2013, 07:35 AM
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rimshotcopter's Avatar
Quote:
Originally Posted by leadfeather
Rimshot, how would you compare the flying qualities of your tilt only copter vs your tilt/cant design?
IMO, the bottom line is, if all that is desired is to fly, as stated, one can fly a brick or build paper airplanes. It just a matter of personal likes and dislikes. Subjectivity.
Mar 05, 2013, 08:00 AM
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rimshotcopter's Avatar
Why would someone build something like what is shown in the attached picture if all they wants to do is Fly?
Last edited by rimshotcopter; Mar 05, 2013 at 11:53 AM. Reason: fixed error
Mar 05, 2013, 12:49 PM
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ilektron's Avatar
Found a great link. Talks about some interesting stuff, all of which are relevant to the OAT bicopter.

A FEASIBILITY STUDY ON THE CONTROL OF A GENERIC AIR VEHICLE USING CONTROL MOMENT GYROS
Mar 07, 2013, 09:27 PM
No you cant fly it.
kicekilla's Avatar
Quote:
Originally Posted by leadfeather
Here is another (very cool) bicopter that flies great with out fan cant.

I might throw together a test rig to isolate cant/precession to see what happens with fan cant only, no tilt....kind of like the vinyl record experiment.

http://m.youtube.com/watch?v=V-DZXIj4RPk
this is great!
Mar 08, 2013, 12:17 AM
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RCvertt's Avatar
Quote:
Originally Posted by ilektron
Found a great link. Talks about some interesting stuff, all of which are relevant to the OAT bicopter...
Very interesting read. Probably a good thing I don't understand a word of it or I most likely wouldn't even attempt the things I build

If you find something good in it and don't mind breaking it down, way down, into layman terms then I'm all ears.

Quote:
Originally Posted by v22chap
Just goes to show .. a brick could hover if you can program a controller ,, matter of fact hover charlie looks a little like a brick
As long as that brick is made of foam you are good to go. He's getting a nose cone and looks a little more like a torpedo to me now. We'll see what happens.

As for the Arduino learning curve. It's not too bad once you get past that first build. My suggestion is do the "load the blink sketch" tutorial first. That will tell you all about arduino and how to load up code. Then build a + config quadcopter since I think it's the easiest to keep orientation of. You can easily glue a vertical foam fin on it and such to help with orientation even more. Not as easy to do with an x config quad.
Last edited by RCvertt; Mar 08, 2013 at 12:31 AM.
Mar 08, 2013, 12:34 AM
Will fly for food
ilektron's Avatar
Quote:
Originally Posted by RCvertt
Very interesting read. Probably a good thing I don't understand a word of it or I most likely wouldn't even attempt the things I build
Haha,

They took a simulated model of an F16, trimmed it so that it is neutrally stable in flight, and threw four CMGs (Control Moment Gyros or large spinning masses) in it. Then, they tried to control the aircraft using those gyros. When I have some time I'll dig through it more in depth.
Mar 08, 2013, 07:24 AM
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leadfeather's Avatar
Speaking of flying bricks.

Flight Assembled Architecture (1 min 48 sec)
Mar 09, 2013, 10:12 PM
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RCvertt's Avatar
The beginning of quadcopter slave labor Not going to be fun when SkyNet takes over.

Charlie had some good tests in lots of wind today.
FoamyCharlie-InWind1 (0 min 59 sec)
Mar 10, 2013, 08:35 AM
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leadfeather's Avatar
Nice RCv!

Looks like the elevator has gyro input?


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