Every year or so, some research group posts a video of a "cyclocopter" flying. I'm not sure why (this article suggest they might be more efficient than traditional helicopters, and that people have been pursing them for a century). 

Anyway, here's the latest from a Korean university lab. I wish I could tell you more but their information link is dead. 

Views: 2957

Comment by Maxime Carrier on May 22, 2013 at 8:50pm
it remember me fan wing, I admit I have never seen this concept before.
Comment by Joshua Johnson on May 22, 2013 at 9:05pm

I've thought about the fact that a design like this would definitely work... But I am skeptical that its more efficient than a traditional hex or octocopter.  

Comment by Overwatch on May 22, 2013 at 10:37pm

Efficient or not, it definitely lacks the mechanical simplicity of a traditional brushless direct drive prop. Which means it's going to be heavier, less sturdy and more expensive.

Comment by Overwatch on May 22, 2013 at 10:38pm

How does it yaw?

Comment by Joshua Johnson on May 22, 2013 at 10:43pm

Probably the same way as a traditional hex or quad by increasing and decreasing motor speeds separately .

Comment by Darren Royle on May 23, 2013 at 12:52am

always good to see a different way of doing things . keep up the good work.

I am sure that this type of project helps inspire new ways to solve problems

Comment by Jack Crossfire on May 23, 2013 at 12:59am

It looks like a way for lot of grad students to combine their independent research into 1 vehicle.  1 guy studies bike chains.  Another guy studies airfoils.  Another guy studies paddle wheels.

Comment by Brian Boatright on May 23, 2013 at 4:10am

I watched the video and the hover was not that stable. As far as the design feature, it's massive and has more mechanical parts to fail during flight. Even if it's more efficient it will never been so much more efficient than the cost of maintenance on all of those moving parts. 

Comment by Project Nadar on May 23, 2013 at 7:14am

I do agree with all the above regarding efficiency loss towards multicopters but this might design might be able to move on the ground and maybe water as well with some more innovation involved. 


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Comment by Kevin Solar on May 23, 2013 at 8:25am

Interesting post. It got me reading more on the topic.

While I’m certainly not suggesting that the ‘cyclocopter concept’ has any particular advantage over more traditional designs… there still exists an intrinsic value to looking under and around as many ‘rocks’ as possible while in search of a good ‘stepping stone‘.

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