On Tuesday, May 27, 2014 8:43:59 AM UTC-4, H*a*r*r*o*l*d wrote:
On 5/27/2014 8:14 AM, John H wrote:

Maybe you were seeing some 3D flying also: https://www.youtube.com/watch?v=ZVihCOt7jQw


I've seen this 3D flyer perform a few times. I can't imagine how the
models can do the same stunts she does.

I'm not sure exactly what you're trying to say. Model R/C airplanes are the only kinds of aircraft that can perform those extreme 3D maneuvers, in fact R/C invented 3D. A full-scale Pitts, Cap232, etc... just doesn't have the power-to-weight ratio to hang on the prop practically motionless in the air, then power up and shoot straight up. They aren't flying, but are using prop wash and large control surfaces to stabilize themselves. It takes considerable skill and practice.