identify this airfoil

[GeorgeC]

I have heard of flying the blue donut, but I'm not sure how to. Is this some kind of Flettner rotor?

 

[Zeldman]

Hmmmm.... looks like one of them donut things people sit on when they have a specific problem....

 

[coloradobluesky]

It's a toroid.

 

[roncachamp]

I have heard of flying the blue donut, but I'm not sure how to. Is this some kind of Flettner rotor?

Rock-A-Stack

 

[wilkersk]

I don't know about plotting the coordinates of this airfoil. But, if you put it in the freezer for awhile, it works great as a teething ring for the little one.

 

[GlennAB1]

NACA? Yeah, looks like a dog toy, let it fly!

 

[FlySince9]

nah... fisher-price for sure...